U.S. Patent No. 5,915,210
`
`
`In re Patent of:
`U.S. Patent No.:
`Issue Date:
`Appl. Serial No.:
`Filing Date:
`Title:
`
`
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`Cameron et al.
`5,915,210
`Jun. 22, 1999
`08/899,476
`Jul. 24, 1997
`METHOD AND SYSTEM FOR PROVIDING MULTICARRIER
`SIMULCAST TRANSMISSION
`
`DECLARATION OF DR. APOSTOLOS K. KAKAES
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`1.
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`My name is Apostolos K. Kakaes of Vienna, Virginia. I understand that I am
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`submitting a declaration offering technical opinions in connection with the above-referenced
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`Inter Partes Review proceeding pending in the United States Patent and Trademark Office for
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`U.S. Patent No. 5,915,210 (the “’210 patent”), and prior art references relating to its subject
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`matter. My current curriculum vitae is attached and some highlights follow.
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`2.
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`I have over thirty (30) years of experience in electrical engineering and computer
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`science and in fixed and mobile communications networks. I attended the University of
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`Colorado from 1974 to 1980, during which, I earned a Bachelor of Science (B.S.) and a Master
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`of Science (M.S.) in applied mathematics with a minor in electrical engineering. I attended the
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`Polytechnic Institute of New York between 1982 and 1988, during which, I earned a Doctor of
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`Philosophy (Ph.D.) in electrical engineering, with a thesis titled "Topological Properties and
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`Design of Multihop Packet Radio Networks." While pursuing the Ph.D. degree, I held a joint
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`appointment as Special Research Fellow and Adjunct Instructor at the Polytechnic Institute of
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`New York between 1985 and 1986.
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`3.
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`Between 1982 and 1987, I worked at AT&T Bell Laboratories in Holmdel, New
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`Jersey. While at AT&T Bell Laboratories, I worked on modeling, analysis, design, and
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`performance evaluation of voice and data networks. I developed algorithms for DNHR
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`(Dynamic, Non-Hierarchical Routing) used in the telephone network. I also worked on analysis
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`U.S. Patent No. 5,915,210
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`of advanced data services and formulation of long term plans for development of enhanced data
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`services and network design tools to support such services.
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`4.
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`I was an Assistant Professor of Electrical Engineering and Computer Science at
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`The George Washington University (GWU), Washington, D.C., between 1987 and 1994. During
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`my association with GWU, I taught graduate courses in the area of communication engineering,
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`including communication theory, coding theory, voice and data networking, and mobile
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`communications. I also received several research awards/grants, including the prestigious NSF
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`Research Initiation Award.
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`5.
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`In 1988, I founded Cosmos Communications Consulting Corporation ("Cosmos"),
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`which is a private communications engineering consulting firm specializing in mobile
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`communications, and I have been the President of the company since the founding. Since 1994, I
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`have worked full-time at Cosmos. At Cosmos, among various activities, I have consulted on high
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`level technology-related issues and trends to corporate entities, governmental agencies, and
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`international organizations, such as the United Nations. I have provided technical consultancy to
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`engineering firms, operators, and equipment vendors on issues related to existing or evolving
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`technologies for mobile communications, and to the investment community on issues related to
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`both fixed and wireless communications technologies. I have served as consultant on both civil
`
`and criminal legal cases, including several patent infringement cases both at the ITC and in
`
`district court. I also participated as a technical consultant in the analysis of large patent portfolios
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`for the purposes of due diligence, sales, and merger and acquisition activities for some of the
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`largest companies in the mobile communications space. These projects spanned a
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`multidimensional spectrum of technologies in both fixed and mobile communications as they
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`have evolved over the past thirty (30) years.
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`U.S. Patent No. 5,915,210
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`6.
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`During my work at Cosmos, I have provided expert advice and conducted
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`extensive training for practicing engineers in the field in diverse networking technology areas,
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`including Wireless Local Area Networks (LAN), Metropolitan Area Networks (MAN), and
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`Personal Area Networks (PAN) technologies, paging networks, ad hoc networks, including IEEE
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`802.11 (Wi-Fi), IEEE 802.16 (WiMAX), HIPERLAN, Bluetooth, Near Field Communications,
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`IrDA (Infrared Data Association). My experience includes detailed in depth analysis of cellular
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`networks operating with any of the available access technologies as standardized in various
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`standards, broadly known as AMPS, GSM, GPRS, EDGE (EGPRS); North American TDMA
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`and IS-136, iDEN, IS-95, UMTS, HSPA, and LTE. I have experience in the design and
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`implementation of voice and data networking (circuit switching as well as all the evolving all IP-
`
`based technologies), traffic engineering, RF design, Quality of Service (QoS) and resource
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`allocation, MAC protocols, as well as in the design of core networks, both user plane and control
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`plane.
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`7.
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`Over the course of my career, I have authored and co-authored some thirty (30)
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`publications on various aspects of fixed and mobile communications, as noted in my curriculum
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`vita. I am a member of the Institute of Electrical and Electronics Engineers (IEEE) and actively
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`involved in the Communications Society and the Information Theory Society of IEEE. Between
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`1991 and 1992, I served as the Secretary of IEEE Communications Society National Capital
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`Area Chapter. Between 1992 and 1993, I was the Vice-Chair of IEEE Communications Society
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`National Capital Area Chapter. I was the Vice-Chair of the Communication Theory Technical
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`Committee of the Communications Society of the IEEE for the 1993-1996 term, and Treasurer of
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`the Communication Theory Technical Committee of the Communications Society of the IEEE
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`for the 1996-1999 term.
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`8.
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`I have served as a reviewer for the IEEE, book editors, other technical
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`publications, and various National Science Foundation (NSF) Panels. I have organized technical
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`sessions in technical conferences, including the IEEE International Conference on
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`Communications (ICC) and IEEE Global Communications Conference (Globecom). I served as
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`the Technical Program Chair for the Communication Theory Mini-Conference in 1992.
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`9.
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`I am familiar with the content of U.S. Patent No. 5,915,210 (the “’210 patent”). In
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`addition, I have considered the various documents referenced in my declaration as well as
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`additional background materials. For example, I have considered: (1) U.S. Patent No. 5,365,569
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`to Witsaman et al. (“Witsaman”); (2) John A. C. Bingham, Multicarrier Modulation for Data
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`Transmission: An Idea Whose Time Has Come, 28 IEEE Communications Magazine 5 (May
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`1990) (“Bingham”); and (3) Bernard Le Floch et al., Digital Sound Broadcasting to Mobile
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`Receivers, 35 IEEE Transactions on Consumer Electronics 493 (Aug. 1989) (“Le Floch”). I have
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`also reviewed the prosecution history of the ’210 patent and the claim construction orders from
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`Mobile Telecommunications Technologies, LLC v. T-Mobile USA, Inc., et al., Case No. 2:13-cv-
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`00886-JRG-RSP (E.D. Tex.); Mobile Telecommunications Technologies, LLC v. Sprint Nextel
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`Corp., et al., Case No. 2:12-cv-00832-JRG-RSP (E.D. Tex.); Mobile Telecommunications
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`Technologies, LLC v. Leap Wireless International, Inc., et al., Case No. 2:13-cv-00885-JRG-
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`RSP (E.D. Tex.); and Mobile Telecommunications Technologies, LLC v. Clearwire Corp., et al.,
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`Case No. 2:12-cv-00308-JRG-RSP (E.D. Tex.). I have also reviewed the January 22, 2015
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`Decision on Institution of Inter Partes Review of the Patent Trial and Appeal Board in Case
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`IPR2014-01036.
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`10.
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`Counsel has informed me that I should consider these materials through the lens
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`of one of ordinary skill in the art related to the ’210 patent at the time of the invention, and I
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`havedone so during my review of these materials. I believe one of ordinary skill as of November
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`12, 1992 (the priority date of the ’210 patent) would have at least a B.S. degree in electrical
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`engineering, computer science, computer engineering, or equivalent education. This person
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`would also need to have at least two years of experience in the design and configuration of
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`wireless paging systems, or other two-way wireless communications systems and be familiar
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`with the operation and functionality of multicarrier transmissions. I base this on my own
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`personal experience, extensive training that I provided for those in the industry as well as my
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`knowledge of colleagues and other professionals at the time. With this in mind, for purposes of
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`this analysis, references that I make to the views of a person of ordinary skill are intended to
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`relate the views of that person as of November 12, 1992 or earlier, whether stated with respect to
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`the present or past tense.
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`11.
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`Counsel has advised me that, during Inter Partes Review, claims of an expired
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`patent are generally given their ordinary and customary meaning as understood by a person of
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`ordinary skill in the art in question at the effective filing date of the patent. Counsel has also
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`informed me that this may yield interpretations that are broader than, or different from, the
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`interpretation applied during a District Court proceeding, such as the pending MTel litigation.
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`12.
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`I have no financial interest in either party or in the outcome of this proceeding. I
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`am being compensated for my work as an expert on an hourly basis. My compensation is not
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`dependent on the outcome of these proceedings or the content of my opinions.
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`13. My findings, as explained below, are based on my study, experience, and
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`background in the fields discussed above, informed by my education in applied mathematics and
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`electrical engineering, and my experience in the design and analysis of fixed and mobile
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`communications systems.
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`14.
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`This declaration is organized as follows:
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`I.
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`II.
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`Brief Overview of the ’210 Patent (Page 6)
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`Combination of Witsaman and Bingham (Page 7)
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`Conclusion (Page 13)
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`III.
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`Brief Overview of the ’210 Patent
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`The ’210 patent is generally directed to a “method and system for providing
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`I.
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`15.
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`multicarrier simulcast transmission.” Ex. SAM1001, Title. The ’210 patent includes 19 claims,
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`of which claims 1, 10, and 19 are independent.
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`16.
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`The ’210 patent acknowledges that simulcast technology existed in the prior art.
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`See generally Ex. SAM1001, 1:19 to 4:40. The ’210 patent describes that “[s]imulcast
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`technology in communication systems was originally developed to extend transmitter coverage
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`beyond that which could be obtained from a single transmitter.” Ex. SAM1001, 1:47-49. The
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`’210 patent goes on to note that “simulcasting has evolved into a technique capable of providing
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`continuous coverage to a large area.” Ex. SAM1001, 1:49-51. In simulcast systems, multiple
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`transmitters operate on substantially the same frequencies and transmit the same information and
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`are positioned to cover extended areas. See Ex. SAM1001, 1:52-55. In order to extend coverage
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`areas, a person having ordinary skill in the art would have understood that these multiple
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`simulcast transmitters, each of which defines a transmission zone, are necessarily and always
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`geographically separated.
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`17.
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`Independent claims 1, 10, and 19 add to the ’210 patent’s description of these
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`prior art simulcast systems by reciting the use of multicarrier modulated signals. See Ex.
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`SAM1001, 33:47-62, 34:45-64, 36:7-23.
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`18.
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`In particular, claims 1, 10, and 19 recite a first plurality of carrier signals within
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`the desired frequency band and a second plurality of carrier signals transmit in simulcast with the
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`first plurality of carrier signals. See id. According to claims 1, 10, and 19, each of the first
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`plurality of carrier signals represents a portion of an information signal substantially not
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`represented by others of the first plurality of carrier signals, and the second plurality of carrier
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`signals correspond to and represent substantially the same information as a respective carrier
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`signal of the first plurality of carrier signals.. See id.
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`19.
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`As will be described in the following sections, however, simulcast transmission of
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`multicarrier modulated signals was well known in the art well before November 12, 1992.
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`II.
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`Combination of Witsaman and Bingham
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`20. Witsaman describes “a simulcast broadcast system 20,” which “broadcasts pages
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`that are generated by a set of paging terminals 22 and 24 connected to a publicly switched
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`telephone network (PSTN) 26.” Ex. SAM1012, 7:5-9. The system 20 described using FIG. 2 of
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`Witsaman “is capable of forwarding pages for simulcast to the stations 30 located in one or more
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`wide area groups (WAGs) 37 of stations, one of which is illustrated in block form by FIG. 2.”
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`Ex. SAM1012, 7:40-43. “The individual stations 30 will all broadcast the same paging signal at
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`the same time.” Ex. SAM1012, 7:33-35. Accordingly, pagers “located in areas where paging
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`signals from two or more stations 30 can be received . . . will receive signals that are in phase
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`and that can be processed as a single, coherent signal.” Ex. SAM1012, 7:35-39.
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`21.
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`The following annotation of FIG. 2 provides an example of the simulcast
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`operation described above.
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`As shown in this Annotation, transmitter A and transmitter B are each in Local Area Group
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`1. Because they are located in the same local area group, each of transmitters A and B will
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`“broadcast the same paging signal at the same time” to pager X. See Ex. SAM1012, 7:33-
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`39.
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`22. Witsaman describes that “[e]ach station 30 is provided with at least one
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`transmitter 34.” Ex. SAM1012, 7:54-55. Each “[t]ransmitter 34 is capable of broadcasting
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`signals in any format in which they can be processed by the complementary pagers 29.” Ex.
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`SAM1012, 7:60-62. In other words, Witsaman did not intend for its simulcast broadcast system
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`20 to be limited to any particular type of coding or modulation. All of the “control information”
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`(see, e.g., Ex. SAM1012, 7:18-21) and “status information” (see, e.g., Ex. SAM1012, 8:11-14)
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`required to operate the system 20 in simulcast is integral to the information being transmitted,
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`not the “format” in which the signal is broadcast by the individual transmitters 34.
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`23.
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`Accordingly, though Witsaman describes the transmitters 34 using one of several
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`modulation schemes to modulate a single carrier (see Ex. SAM1012, 7:55-60), it would have
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`been obvious to one of ordinary skill in the art at the time of the ’210 patent to employ a
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`multicarrier modulation (MCM) method of transmission, such as the one described by Bingham.
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`In particular, Bingham describes the benefits of replacing older General Switched Telephone
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`Networks, such as the PSTN system upon which Witsaman relies, with an MCM transmission
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`method. See Ex. SAM1015, p. 5. Bingham promotes integration of its MCM transmission
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`method into Witsaman through disclosure of several applicable benefits that follow from
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`employing its MCM transmission method, including two that follow: “first, that an MCM signal
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`can be processed in a receiver without the enhancement (by as much as 8 dB in some media) of
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`noise or interference that is caused by linear equalization of a single-carrier signal, and second,
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`that the long symbol time used in MCM produces a much greater immunity to impulse noise and
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`fast fades.” Ex. SAM1015, p. 5.
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`24.
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`In greater detail, Bingham outlines a procedure for implementing MCM
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`transmissions on General Switched Telephone Network (e.g., the PSTN described by Witsaman).
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`See Ex. SAM1015, p. 13-14. Bingham provides the design requirements for both MCM
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`transmitters and receivers. See Ex. SAM1015, p. 13. Bingham also provides the parameters for
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`these modems that can then be implemented on a General Switched Telephone Network. See Ex.
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`SAM1015, p. 13 (“The constants of proportionality are each between 6 and 8, Ne is typically 30,
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`and in one widely used implementation of MCM for use on the GSTN, Ntot = 512.”).
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`25. Moreover, one of ordinary skill in the art at the time of the ’210 patent’s filing
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`would have the knowledge necessary to integrate the MCM transmitters and receivers described
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`by Bingham into Witsaman’s simulcast transmission system. Indeed, the transmission of MCM
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`signals in simulcast from multiple, geographically dispersed transmitters had already been
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`accomplished in other contexts well before the filing of the ’210 patent. For example, Le Floch
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`describes a broadcasting service in which a plurality of transmitters “would be temporally
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`synchronized and would all transmit the same signal.” Ex. SAM1016, p. 9, § 7. The transmitters
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`described by Le Floch utilized the COFDM technique, a type of MCM. See id.
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`26.
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`In modifying the transmitters and receivers of Witsaman to implement an MCM
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`transmission method (as opposed to the single carrier modulation method described by
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`Witsaman), one of ordinary skill in the art would have replaced the transmitters 34 and pagers 29
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`with the MCM modems described by Bingham. Modified in this way, the MCM-enabled
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`transmitters in a geographic area would “all broadcast the same paging signal at the same time,”
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`as described by Witsaman, but would do so using multiple carrier modulated signals Witsaman.
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`See Ex. SAM1015, 7:33-35.
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`27.
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`To transmit these pager signals using MCM, Bingham describes that “[i]nput data
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`at Mfs b/s are grouped into blocks of M bits at a block (‘symbol’) rate of fs. The M bits are used,
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`mn bits for the carrier at fc,n to modulate Nc carriers, which are spaced Δf apart across any usable
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`frequency band.” Ex. SAM1015, p. 5. In other words, Bingham describes that each of the
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`MCM- enabled transmitters are configured to transmit a plurality (Nc) of carrier signals within
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`the desired/usable frequency band. When Bingham describes that “[i]nput data at Mfs b/s are
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`grouped into blocks of M bits” and “M bits are used . . . to modulate Nc carriers,” Bingham
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`discloses that each of the Nc carrier signals represent a portion of the information signal
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`substantially not represented by others of the carrier signals. Again, in use in the simulcast
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`broadcast system 20 of Witsaman, a plurality of these MCM-enabled transmitters would all
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`broadcast a plurality of carrier signals corresponding to and representing substantially the same
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`information as the other transmitters in a given region. See Ex. SAM1015, 7:33-35.
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`28.
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`The following annotated version of FIG. 2 of Bingham illustrates a simple MCM
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`signal output by one of Bingham’s transmitters, where the number of carriers (Nc) is three.
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`transmitter shown in FIG. 13 of the ’210 patent. The following annotation of FIG. 1 of Bingham
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`highlights the relevant elements of the transmitter:
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`29.
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`The structure of the transmitters described by Bingham is the same as the
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`transmitter shown in FIG. 13 of the ’210 patent. The following annotation of FIG. 1 of Bingham
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`highlights the relevant elements of the transmitter.
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`30.
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`Though FIG. 1 of Bingham does not illustrate control logic, a power amplifier, or
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`an antenna, one of ordinary skill in the art would have readily appreciated the existence of each
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`within a Bingham’s transmitter based upon the narrative accompanying the figure. In particular,
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`Bingham states that “modem data communication systems . . . use any combination of
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`compression, error correction, and flow control.” See Ex. SAM1015, p. 2. These features would
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`require Bingham’s MCM transmitter to include control logic. Additionally, wireless
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`transmissions over the large geographic areas described by Witsaman require both a power
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`amplifier and an antenna. See Ex. SAM1012, 7:40-53; see also Ex. SAM1017, FIG. 5A, 1:43-45.
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`Specifically, one of ordinary skill would have readily appreciated the need for a power amplifier
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`in Witsaman’s transmitter to amplify the combined signal before it is emitted by the antenna and
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`understood that the antenna transmits signals wirelessly. Id. Moreover, to the extent that
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`Witsaman and Bingham were found not to disclose control logic, a power amplifier, or an
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`antenna, it would have been obvious to one of ordinary skill in the art to include these elements
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`as they were commonly found in similar transmitters.
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`III. Conclusion
`3 I .
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`I hereby declare that all statements made herein of my own knowledge are true
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`and that all statements made on information and beliefare believed to be true: and further that
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`these statements were made with the knorvledge that willful lalse statements and the like so
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`made are punishable by fine or imprisonment, or both, under Section l00l ofTitle l8 ofthe
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`United States Code.
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`Signature:
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`los K. Kakaes. Ph.D.
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`APOSTOLOS K. KAKAES
`Cosmos Communications Consulting Corporation, President
`908 Park St. SE, Suite 201
`Vienna, Virginia 22180
`703-310-6076 (Office); 703-981-0999 (Mobile);
`e-mail: akakaes@gmail.com
`
`AREAS OF EXPERTISE
`
`All aspects of fixed and mobile communications. Over the years, my emphasis has been both in
`breadth and in depth, originally in fixed communications networks and then in mobile
`communications. Specific areas of in-depth expertise include:
` LTE/LTE-Advanced and evolution issues of 3G to 4G and beyond
` UMTS, including FDD, TDD, HSDPA/HSUPA, HSPA+, both air interface (UTRA) and
`core networking issues
` cdma2000 family from IS-95, through its evolution to 1x, 3x, 1xEV-DO (HDR), 1xED-
`DV (all aspects of the evolution to “3G” and beyond)
` Wireless Local Area Networks (LAN), Metropolitan Area Networks (MAN), and
`Personal Area Networks (PAN) technologies, Paging networks, Ad hoc networks,
`including IEEE 802.11 (WiFi), IEEE 802.16 (WiMAX), HIPERLAN, Bluetooth, Near
`Field Communications, IrDA (Infrared Data Association) operating with any of the
`available access technologies
` GSM, GPRS, EDGE (EGPRS) and related evolutionary issues
` North American TDMA and IS-136
` TETRA
`iDENTM
`
` Core Network technologies, IS-41, SS7, ATM, MAP, etc.
` Voice over IP (VoIP)
` Design and implementation of voice and data networking (circuit switching as well as all
`the evolving all IP-based technologies)
` Traffic engineering and network design; both air interface aspects (including resource
`allocation, QoS, MAC protocol, etc.) and design of core network, both user plane and
`control plane
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`EMPLOYMENT HISTORY
`
`9/88 – Present
`Cosmos Communications Consulting Corporation. Founder and president of private
`communications engineering consulting firm specializing in mobile communications. Initially
`part time; full time since 1994.
` Developed and presented courses, seminars, and lectures on fixed and mobile
`communications to both corporate and government entities, such as the FCC and the US
`Marshal’s Office.
` Consulted on high level technology-related issues and trends, pros and cons of each, etc.
`to corporate entities, governmental agencies, and international organizations, such as the
`UN.
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` Consulted at the detailed technical level to engineering firms, operators, and equipment
`vendors on technical issues related to existing or evolving technologies for mobile
`communications.
` Served as technology consultant to the investment community both fixed and wireless
`communications technologies.
` Served as consultant and expert witness on both civil and criminal legal cases, including
`a class action lawsuit brought in California, a murder case in Illinois, and several patent
`infringement cases both at the ITC and in district court.
` Participated as a technical consultant in the analysis of large patent portfolios for the
`purposes of due diligence, sales, and/or M/A activities for some of the largest companies
`in the mobile communications space.
`
`These projects spanned a multidimensional spectrum of
` Technologies: both fixed and mobile communications as they have evolved over the past
`30+ years;
` Audiences: non-technical support personnel, highly specialized engineers, Wall Street
`analysts, hedge fund managers, litigation teams, as well as decision making executives at
`the CEO/CFO/CTO level;
` Geographic and cultural backgrounds that span all continents and over 40 countries.
`
`9/87 - 5/94
`The George Washington University, Washington, D.C. Department of Electrical Engineering and
`Computer Science.
` Taught mostly graduate courses in the area of communication engineering, including
`communication theory, coding theory, voice and data networking, and mobile
`communications.
` Proposed, developed and taught new graduate courses in the area of mobile
`communications.
` Received several research awards/grants, including the prestigious NSF Research
`Initiation Award.
` Participated in several committees, including the departmental Graduate Curriculum
`Committee as well as various University-wide committees.
`
`7/85 - 12/86
`Polytechnic Institute of New York, Brooklyn, New York. Joint appointment as Special Research
`Fellow and Adjunct Instructor (while pursuing the Ph.D. degree)
`
`1/82 - 7/87
`AT&T Bell Laboratories, Holmdel, New Jersey. Worked on modeling, analysis, design, and
`performance evaluation of voice and data networks. Developed algorithms for DNHR
`(Dynamic, Non-Hierarchical Routing) used in the telephone network. Analysis of advanced data
`services and formulation of long term plans for development of enhanced data services and
`network design tools to support such services.
`
`7/76 - 12/81
`University of Colorado, Boulder, Colorado and Michigan State University, East Lansing,
`Michigan. Undergraduate and then graduate teaching assistant.
`
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`EDUCATION
`
`09/82 - 01/88
`Polytechnic Institute of New York. Ph.D. in Electrical Engineering.
`Thesis Title: Topological Properties and Design of Multihop Packet Radio Networks.
`Thesis Advisor: Professor Robert R. Boorstyn.
`
`09/74 - 06/80
`University of Colorado.
`in Electrical Engineering.
`a minor
`M.S.
`in Applied Mathematics with
`B.S. in Applied Mathematics with a minor in Electrical Engineering.
`
`PROFESSIONAL ASSOCIATIONS AND ACTIVITIES
`
` Member of the IEEE (Active in the Communications Society and the Information Theory
`Society).
` Secretary, IEEE Communications Society National Capital Area Chapter, 91/92.
` Vice-Chair, IEEE Communications Society National Capital Area Chapter, 92/93.
` Vice-Chair of the Communication Theory Technical Committee of the Communications
`Society of the IEEE; Elected for the 1993-1996 term.
` Treasurer of the Communication Theory Technical Committee of the Communications
`Society of the IEEE, Elected for the 1996-1999 term.
` Reviewer for the IEEE, book editors, and other technical publications.
` Reviewer for various NSF Panels.
` Active Participant and Organizer of Technical Sessions in Technical Conferences,
`including the IEEE International Conference on Communications (ICC) and IEEE Global
`Communications Conference (Globecom).
` Technical Program Chair for the Communication Theory Mini-Conference, Dec. 1992.
`
`PUBLICATIONS AND PRESENTATIONS
`
`1.
`
`2.
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`3.
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`4.
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`5.
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`6.
`
`“Topological Properties and Design of Multi-Hop Packet Radio Networks”; Presented
`at the IEEE Information Theory Society Meeting; Arlington, Virginia; February 1988.
`“Topology and Capacity of Multi-Hop Packet Radio Networks” (Joint with R.R.
`Boorstyn); 1988 International Symposium on Information Theory; Kobe, Japan; June
`1988.
`“Placing Repeaters in Multi-Hop Packet Radio Networks” (Joint with R.R. Boorstyn);
`Proceeding of Globecom ‘89, Dallas, Texas; November 1989.
`“Topological Properties and Design of Packet Radio Networks”; Invited Presentation
`at the National Technical University of Athens; Athens, Greece; January 10, 1990.
`“Channel Allocation Strategies in Dual Mode Digital Cellular Networks”; Proceedings
`of Globecom ‘90, San Diego, California; December 1990.
`“Bandwidth Allocation Techniques in Dual Mode Cellular Systems”; Invited
`Presentation at the Rutgers University Wireless Information Networks Laboratory
`(WINLAB); January 25, 1991.
`
`Page 16 of 18
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`7.
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`8.
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`9.
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`10.
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`11.
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`12.
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`13.
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`14.
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`15.
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`16.
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`17.
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`18.
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`19.
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`20.
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`21.
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`22.
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`23.
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`24.
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`25.
`
`“Some Topological Properties of Different Classes of Random Applications to
`Communication Networks”, Proceedings of the IEEE Information Theory Symposium,
`Budapest, Hungary; June 1991.
`“The Effects of Residual Bandwidth in TDMA Cellular Networks”, IEEE
`Communication Theory Workshop, Rhodes, Greece, July 1991.
`“Concentrators and Concentrator Design”, Encyclopedia of Telecommunications, Fritz
`E. Froehlich, Editor-in-chief; Marcel Dekker, Inc, 1992.
`“Comparison of TDMA and CDMA for Cellular Networks,” Ecole Nationale
`Superieure des Telecommunications, Paris, France, March 5, 1992.
`“Dual Mode Digital Cellular Networks: The Effects of Bandwidth Segmentation on
`Digital and Analog Users,” Presented at the IEEE Communications Society Meeting,
`April 16, 1992.
`“Dynamic Channel Allocation and Reallocation for Dual-System Cellular Networks,
`Workshop Record, (with Sirin Tekinay and Bijan Jabbari), Third Winlab Workshop on
`Third Generation Wireless Information Networks, Piscataway, NJ, April 28-29, 1992.
`“Spread Spectrum Technology Applications in Telecommunications,” Tutorial
`presented at the 1992 IEEE Mohawk Valley Section Conference, June 1992.
`“Spread Spectrum Fundamentals: Techniques and Applications”, Tutorial (in
`cooperation with Giovanni Vannucci) presented at ICC’92, June 1992.
`“Global System for Mobile Communications (GSM)”, Presented at ICC’93, Geneva,
`Switzerland, May 25, 1993.
`“Data Communications Basics”, Encyclopedia of Software Engineering”, John Wiley
`& Sons, Inc., 1993.
`“Modelling of Cellular Communication Networks with Heterogeneous Traffic
`Sources” (with Sirin Tekinay and Bijan Jabbari), Proceedings of the International
`Conference on Universal Personal Communications, 1993, October 1993.
`“Global System for Mobile Communications (GSM)”, Presented at the Francusko-
`Polska Wysza Szkowa, Poznan, Poland, March 1994.
`“Traffic Engineering for Cellular Network Design”, Presented at the Francusko-Polska
`Wysza Szkowa, Poznan, Poland, March 1994.
`“Principles of Traffic Engineering and Network Design”, Presented at the Regional
`Seminar on Mobile Cellular Radio Telephone Systems, by invitation of the ITU, April
`19, 1994.
`“Principles of Spread Spectrum Systems for Mobile Communications”, Presented at
`the Regional Seminar on Mobile Cellular Radio Telephone Systems, by invitation of
`the ITU, April 20, 1994.
`“Global System for Mobile Communications (GSM)”, Presented at the Regional
`Seminar on Mobile Cellular Radio Telephone Systems, by invitation of the ITU, April
`21, 1994.
`“Global System for Mobile Communications (GSM)”, Presented at ICC’94, New
`Orleans, LA.; May 1, 1994.
`“GSM and DCS1900: Evolution to PCS”, ICC/Supercom 1996, Dallas, Texas; June
`23-27, 1996.
`“Traffic Engineering Models for Mobile Communications”, ICUPC96, Cambridge,
`Massachusetts; Sept. 29 - October 2, 1996.
`
`Page 17 of 18
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`26.
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`27.
`28.
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`29.
`30.
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`“GSM-Recent Advances and Future Developments”, Globecom ‘96, London, UK;
`November 1996.
`“Advances in GSM and DCS1800/1900”, ICC ‘97, Montreal, Canada; June 1997.
`“The Global System for Mobile Communications (GSM) and i (DCS1800, PCS1900)”,
`ICC/Supercom ‘98, Atlanta, GA; June 1998.
`“Teletraffic Engineering”, Globecom ‘98, Sydney, Australia; November 1998.
`“Traffic Engineering” in Encyclopedia of Telecommunications, Edited by John
`Proakis, John Wiley, 2002.
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`Page 18 of 18
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