January 2006 doc.: IEEE 802.11-05/1102r4
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`Author(s):
`Name
`Sean Coffey
`Assaf
`Kasher
`Adrian
`Stephens
`
` IEEE P802.11
`Wireless LANs
`
`Joint Proposal: High throughput extension to the 802.11
`Standard: PHY
`
`Date: 2006-01-13
`
`Address
`Company
`16269 Laguna Canyon Rd, Suite 100
`Realtek
`Irvine, CA 92121 USA
`Semiconductor
`Intel Corporation Matam Industrial Park, POB 1659
`Haifa, 31015, Israel
`15 JJ Thompson Avenue,
`Cambridge, CB3 0FD,
`United Kingdom
`
`
`Intel Corporation
`
`Phone
`+1 415 572 6221
`
`+972-4-8651547
`
`+44 1223 763457
`
`email
`coffey@realtek-
`us.com
`assaf.kasher@intel
`.com
`adrian.p.stephens
`@intel.com
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`
`Abstract
`This document contains the PHY layer parts of the 802.11 TGn Joint Proposal Technical
`Specification.
`
`
`Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not
`binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form
`and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained
`herein.
`
`Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this
`contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the
`IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the
`IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The
`contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11.
`
`Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and
`Procedures <Error! Hyperlink reference not valid.>, including the statement "IEEE standards
`may include the known use of patent(s), including patent applications, provided the IEEE
`receives assurance from the patent holder or applicant with respect to patents essential for
`compliance with both mandatory and optional portions of the standard." Early disclosure to
`the Working Group of patent information that might be relevant to the standard is essential to
`reduce the possibility for delays in the development process and increase the likelihood that
`the draft publication will be approved
`for publication.
` Please notify
`the Chair
`<stuart.kerry@philips.com> as early as possible, in written or electronic form, if patented
`technology (or technology under patent application) might be incorporated into a draft
`standard being developed within the IEEE 802.11 Working Group. If you have questions, contact
`the IEEE Patent Committee Administrator at <patcom@ieee.org>
`
`
`
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 1 of 82
`
`

`

`January 2006 doc.: IEEE 802.11-05/1102r4
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`1
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`pre 11n product specification page 2
`
`
`Ass
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 2 of 82
`
`

`

`January 2006 doc.: IEEE 802.11-05/1102r4
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`
`Additional Author(s):
`Name
`Bill Abbott
`Santosh Abraham
`Tomoko Adachi
`Dmitry Akhmetov
`Tsuguhide Aoki
`Yusuke Asai
`Geert Awater
`David Bagby
`Gal Basson
`Anuj Batra
`
`John Benko
`Bjorn Bjerke
`Jerry Chang
`Jerry Chang
`John Chang
`Jeng-Hong Chen
`Stephen Chen
`Yi-Ming Chen
`Pei-ju Chiang
`Emily Chou
`Keith Chugg
`Brian Classon
`Sean Coffey
`Gabriella Convertino
`Marc de Courville
`Rolf De Vegt
`Franz Dielacher
`Yoshiharu Doi
`Takagi Eiji
`Leonid Epstein
`Mustafa Eroz
`Stefan Fechtel
`Paul Feinberg
`Guido Frederiks
`Takashi Fukagawa
`Edoardo Gallizio
`James Gardner
`Monisha Ghosh
`Jeremy Gosteau
`Sudheer Grandhi
`Paul Gray
`Daqing Gu
`Emre Gunduzhan
`Jin-Meng Ho
`Dale Hocevar
`Muhammad Ikram
`
`Company
`TI
`Qualcomm
`Toshiba
`Intel
`Toshiba
`NTT
`Airgo
`Sanyo
`Intel
`TI
`France
`Telecom
`Qualcomm
`Ralink
`Realtek
`Ralink
`Winbond
`Zydas
`Winbond
`Realtek
`Realtek
`Trellisware
`Motorola
`Realtek
`ST
`Motorola
`Airgo
`Infineon
`Sanyo
`Airgo
`Metalink
`HNS
`Infineon
`Sony
`Airgo
`Panasonic
`ST
`Airgo
`Philips
`Motorola
`InterDigital
`Trellisware
`Mitsubishi
`Nortel
`TI
`TI
`TI
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`Address
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`Phone
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`email
`w-abbott@ti.com
`sabraham@qualcomm.com
`tomo.adachi@toshiba.co.jp
`Dmitry.Akhmetov@intel.com
`tsuguhide.aoki@toshiba.co.jp
`asai.yusuke@lab.ntt.co.jp
`awater@airgonetworks.com
`david.bagby@ieee.org
`gal.basson@intel.com
`batra@ti.com
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`john.benko@francetelecom.com
`bbjerke@qualcomm.com
`jerry_chang@ralinktech.com.tw
`jerrychang@realtek.com.tw
`john_chang@ralinktech.com.tw
`jhchen2@winbond.com
`stephen@zydas.com.tw
`ymchen0@winbond.com
`pjchiang@realtek.com.tw
`sychou@realtek.com.tw
`kchugg@trellisware.com
`Brian.Classon@motorola.com
`coffey@realtek-us.com
`Gabriella.Convertino@st.com
`marc.de.courville@motorola.com
`rolf@airgonetworks.com
`franz.dielacher@infineon.com
`doi@gf.hm.rd.sanyo.co.jp
`eijitakagi@airgonetworks.com
`leonide@metalinkbb.com
`meroz@hns.com
`stefan.fechtel@infineon.com
`Paul.Feinberg@am.sony.com
`guido@airgonetworks.com
`fukagawa.takashi@jp.panasonic.com
`edoardo.gallizio@st.com
`jamesgardner@airgonetworks.com
`monisha.ghosh@philips.com
`jeremy.gosteau@motorola.com
`sudheer.grandhi@interdigital.com
`pgray@trellisware.com
`dgu@merl.com
`egunduzh@nortel.com
`jinmengho@ti.com
`hocevar@ti.com
`mzi@ti.com
`
`pre 11n product specification page 3
`
`
`Ass
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 3 of 82
`
`

`

`January 2006 doc.: IEEE 802.11-05/1102r4
`
`
`Additional Author(s):
`Name
`Yasuhiko Inoue
`Kaz Ishida
`Takashi Ishidoshiro
`Lakshmi Iyer
`Eric Jacobson
`Yuh-Ren Jauh
`Taehyun Jeon
`VK Jones
`Naveen Kakani
`Srinivas Kandala
`Assaf Kasher
`Masato Kato
`John Ketchum
`Pansop Kim
`Youngsoo Kim
`Guenter Kleindl
`Kiyotaka Kobayashi
`Cenk Kose
`Takushi Kunihiro
`Edwin Kwon
`Patrick Labbe
`Dongjun (DJ) Lee
`Lin-Nan Lee
`Sheng Lee
`Sok-kyu Lee
`Pen Li
`Yuan Li
`Kevin Liao
`Isaac Lim
`Alfred Lin
`Albert Liu
`Der-Zheng Liu
`Michael Livshitz
`Peter Loc
`Peter Lojko
`Hui-Ling Lou
`Siti Massimiliano
`Adina Matache
`Laurent Mazet
`Darren McNamara
`Irina Medvedev
`Arnaud Meylan
`Morgan Miki
`Seungwook Min
`Andy Molisch
`Mike Moreton
`Yuichi Morioka
`
`Company
`NTT
`Qualcomm
`Buffalo Inc.
`HNS
`Intel
`Zydas
`ETRI
`Airgo
`Nokia
`Airgo
`Intel
`Buffalo Inc.
`Qualcomm
`Winbond
`Samsung
`Siemens AG
`Panasonic
`Conexant
`Sony
`Samsung
`Motorola
`Samsung
`HNS
`Ralink
`ETRI
`Philips
`Infocomm
`Ralink
`Panasonic
`Winbond
`Infineon
`Realtek
`Nortel
`Marvell
`Qualcomm
`Marvell
`ST
`Marvell
`Motorola
`Toshiba
`Qualcomm
`Qualcomm
`Sharp
`ETRI
`Mitsubishi
`ST
`Sony
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`email
`yinoue@ansl.ntt.co.jp
`kishida@qualcomm.com
`doshir@melcoinc.co.jp
`liyer@hns.com
`eric.a.jacobsen@intel.com
`yrjauh@zydas.com.tw
`thjeon@etri.re.kr
`vkjones@airgonetworks.com
`naveen.kakani@nokia.com
`srini@airgonetworks.com
`assaf.kasher@intel.com
`mkato@melcoinc.co.jp
`johnk@qualcomm.com
`pkim@winbond.com
`kimyoungsoo@samsung.com
`guenter.kleindl@siemens.com
`kobayashi.kiyotaka@jp.panasonic.com
`cenk_kose@conexant.com
`kuni@wcs.sony.co.jp
`cy.kwon@samsung.com
`patrick.labbe@motorola.com
`djthekid.lee@samsung.com
`llee@hns.com
`shenghlee@ralinktech.com
`sk-lee@etri.re.kr
`pen.li@philips.com
`liyuan@i2r.a-star.edu.sg
`kevin_liao@ralink.com.tw
`isaac.limwl@sg.panasonic.com
`halin@winbond.com
`Albert.Liu@infineon.com
`dzliu@realtek.com.tw
`livshitz@nortel.com
`ploc@marvell.com
`c_plojko@qualcomm.com
`hlou@marvell.com
`massimiliano.siti@st.com
`amatache@marvell.com
`laurent.mazet@crm.mot.com
`Darren.McNamara@toshiba-trel.com
`irinam@qualcomm.com
`ameylan@qualcomm.com
`miki@slab.tnr.sharp.co.jp
`swmin@etri.re.kr
`molisch@merl.com
`mike.moreton@st.com
`morioka@wcs.sony.co.jp
`
`pre 11n product specification page 4
`
`
`Ass
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 4 of 82
`
`

`

`January 2006 doc.: IEEE 802.11-05/1102r4
`
`
`Company
`Motorola
`Agere
`Mitsubishi
`Sanyo
`Qualcomm
`Samsung
`Samsung
`ST
`Sharp
`NTT
`Philips
`ST
`ST
`Ralink
`Motorola
`Winbond
`Intel
`Conexant
`TI
`TI
`Airgo
`
`TI
`TI
`Samsung
`
`Address
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`email
`markus.muck@motorola.com
`mujtaba@agere.com
`yuki-n@isl.melco.co.jp
`snakao@gf.hm.rd.sanyo.co.jp
`snanda@qualcomm.com
`cngo@sisa.samsung.com
`huaning.niu@samsung.com
`ivan.oakes@st.com
`ohtani@slab.tnr.sharp.co.jp
`onizawa@ansl.ntt.co.jp
`job.oostveen@philips.com
`fabio.osnato@st.com
`Pratima.Pai@st.com
`tpare@ralinktech.com
`jean-noel.patillon@motorola.com
`WCPeng0@winbond.com
`eldad.perahia@intel.com
`jim.petranovich@conexant.com
`npoojary@ti.com
`apurkovic@ti.com
`AliRaissinia@AirgoNetworks.com
`
`Additional Author(s):
`Name
`Markus Muck
`Aon Mujtaba
`Yukimasa Nagai
`Seigo Nakao
`Sanjiv Nanda
`Chiu Ngo
`Huaning Niu
`Ivan Oakes
`Yoshihiro Ohtani
`Takeshi Onizawa
`Job Oostveen
`Fabio Osnato
`Pratima Pai
`Thomas Pare
`Jean-Noel Patillon
`Wei-Chung Peng
`Eldad Perahia
`Jim Petranovich
`Neeraj Poojary
`Aleksandar Purkovic
`Ali Raissinia
`Sthanunathan
`Ramakrishnan
`Sridhar Ramesh
`Jon Rosdahl
`Stephanie Rouquette-
`stephanie.rouquette@motorola.com
`
`
`Motorola
`Leveil
`mike@metalinkbb.com
`
`
`Metalink
`Mike Rude
`Vincenzo.Scarpa@st.com
`
`
`ST
`Vincenzo Scarpa
`erik.schylander@philips.com
`
`
`Philips
`Erik Schylander
`michael.seals@conexant.com
`
`
`Conexant
`Michael Seals
`hr.shao@samsung.com
`
`
`Samsung
`Huai-Rong Shao
`sshellha@qualcomm.com
`
`
`Qualcomm
`Steve Shellhammer
`shida@crl.hitachi.co.jp
`
`
`Hitachi
`Masaaki Shida
`takashi.shono@intel.com
`
`
`Intel
`Takashi Shono
`simoens@motorola.com
`
`
`Motorola
`Sebastien Simoens
`msmith@atheros.com
`
`
`Atheros
`Matt Smith
`robert.j.stacey@intel.com
`
`
`Intel
`Robert Stacey
`adrian.p.stephens@intel.com
`
`
`Intel
`Adrian Stephens
`victor.stolpman@nokia.com
`
`
`Nokia
`Victor Stolpman
`sunsm@i2r.a-star.edu.sg
`
`
`Infocomm
`Sumei Sun
`shravans@qualcomm.com
`
`
`Qualcomm
`Shravan Surineni
`masahiro3.takagi@toshiba.co.jp
`
`
`Toshiba
`Masahiro Takagi
`stakahashi@stec.sanyo.com
`
`
`Sanyo
`Seiichiro Takahashi
`daisuke.takeda@toshiba.co.jp
`
`
`Toshiba
`Daisuke Takeda
`teik-kheong.tan@philips.com
`
`
`Philips
`Teik-Kheong Tan
`y_tanaka@gf.hm.rd.sanyo.co.jp
`
`
`Sanyo
`Yasuhiro Tanaka
`Stephan ten Brink
`Realtek
`
`
`stenbrink@realtek-us.com
`pre 11n product specification page 5
`
`
`sthanu@ti.com
`rsridhar@india.ti.com
`jon.rosdahl@partner.samsung.com
`
`Ass
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 5 of 82
`
`

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`January 2006 doc.: IEEE 802.11-05/1102r4
`
`
`Additional Author(s):
`Name
`Ganesan Thiagarajan
`Eric Tokubo
`Solomon Trainin
`David Tung
`Stefano Valle
`Richard Van Nee
`Nico van Waes
`Allert van Zelst
`George Vlantis
`Timothy Wakeley
`Rod Walton
`Xiaowen Wang
`Mark Webster
`Menzo Wentink
`Mike Wilhoyte
`Ariton Xhafa
`Tomoya Yamaura
`Eric Yang
`Wen-Chang Yeh
`Heejung Yu
`Eldad Zeira
`Jin Zhang
`Ning Zhang
`
`1
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`Company
`TI
`Symbol
`Intel
`Ralink
`ST
`Airgo
`Nokia
`Airgo
`ST
`HP
`Qualcomm
`Agere
`Conexant
`Conexant
`TI
`TI
`Sony
`InterDigital
`Zydas
`ETRI
`InterDigital
`Mitsubishi
`Atheros
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`gana@ti.com
`eric.tokubo@symbol.com
`solomon.trainin@intel.com
`dtung@ralinktech.com
`stefano.valle@st.com
`vannee@airgonetworks.com
`nico.vanwaes@nokia.com
`allertvanzelst@airgonetworks.com
`george.vlantis@st.com
`tim.wakeley@hp.com
`rwalton@qualcomm.com
`xiaowenw@agere.com
`mark.webster@conexant.com
`menzo.wentink@conexant.com
`wilhoyte@ti.com
`axhafa@ti.com
`yamaura@wcs.sony.co.jp
`eric.yang@interdigital.com
`wcyeh@zydas.com.tw
`heejung@etri.re.kr
`eldad.zeira@interdigital.com
`jzhang@merl.com
`ning@atheros.com
`
`pre 11n product specification page 6
`
`
`Ass
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 6 of 82
`
`

`

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`January 2006 doc.: IEEE 802.11-05/1102r4
`
`
`
`Contents
`1
`Introduction ............................................................................................................... 10
`2
`PHY Interface ........................................................................................................... 10
`3
`PLCP packet format .................................................................................................. 10
`3.1
`Operating Mode ................................................................................................ 11
`3.2 Modulation and Coding Scheme (MCS)........................................................... 12
`3.3
`Transmitter Block Diagram (this section is informative) ................................. 13
`3.4 Mathematical description of signals ................................................................. 15
`3.4.1
`Transmission in the upper/lower 20MHz of a 40MHz channel ................ 21
`3.5
`Legacy Field Transmission ............................................................................... 21
`3.5.1
`Cyclic shift definition for the legacy fields. .............................................. 21
`3.5.2
`Legacy Short Training Field ..................................................................... 22
`3.5.3
`Legacy Long Training Field ..................................................................... 23
`3.5.4
`The Legacy Signal Field ........................................................................... 24
`3.6
`The High Throughput Preamble ....................................................................... 26
`3.6.1
`Cyclic shift for the High Throughput preamble ........................................ 26
`3.6.2
`The High Throughput Signal Field ........................................................... 26
`3.6.3
`CRC calculation ........................................................................................ 31
`3.6.4
`The HT STF training symbol .................................................................... 32
`3.6.5
`The HT-LTF long training Field ............................................................... 33
`The Data Field........................................................................................................... 37
`4.1
`The service field ................................................................................................ 38
`4.2
`Scrambler .......................................................................................................... 38
`4.3
`Coding ............................................................................................................... 38
`4.3.1
`Encoder Parsing operation ........................................................................ 38
`4.3.2
`Coding and puncturing .............................................................................. 39
`4.3.3
`Low density parity check codes (optional ECC) ...................................... 39
`4.4
`Data Interleaver ................................................................................................. 44
`4.4.1
`Stream Parser ............................................................................................ 45
`4.4.2
`Frequency interleaver................................................................................ 45
`4.5
`QAM Mapping .................................................................................................. 47
`pre 11n product specification page 7
`Ass
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`
`4
`
`Exhibit 1008
`Panasonic v. UNM
`IPR2024-00364
`Page 7 of 82
`
`

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`January 2006 doc.: IEEE 802.11-05/1102r4
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`
`6
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`Space-Time-Block-Coding (STBC).......................................................... 47
`4.5.1
`4.6
`Pilot Subcarriers ................................................................................................ 49
`4.7
`OFDM Modulation ........................................................................................... 50
`4.7.1
`Spatial Mapping ........................................................................................ 51
`4.7.2
`20MHz HT transmission ........................................................................... 53
`4.7.3
`Transmission in 40MHz HT mode ........................................................... 54
`4.7.4
`Transmission in HT duplicate mode. ........................................................ 55
`4.7.5
`Transmission with a short guard interval .................................................. 56
`4.8
`Legacy duplicate transmission .......................................................................... 56
`5 Channel Numbering and Channelization .................................................................. 56
`5.1
`Channel Allocation in the 5 GHz Band ............................................................ 57
`5.2
`Channel Allocation in the 2.4 GHz Band ......................................................... 57
`Transmit Spectrum Mask .......................................................................................... 58
`6.1
`Spectral Flatness ............................................................................................... 59
`6.2
`Transmit Power ................................................................................................. 60
`6.3
`Transmit center frequency tolerance ................................................................. 60
`Packet alignment ....................................................................................................... 60
`7.1
`Packet alignment ............................................................................................... 60
`7.2
`Reduced Interframe Space (RIFS) .................................................................... 61
`8 Beamforming ............................................................................................................ 61
`8.1
`CSI Matrices Feedback ..................................................................................... 62
`8.2
`Non Compressed Steering Matrix Feedback .................................................... 63
`8.3
`Compressed Steering Matrix Feedback ............................................................ 63
`9 High Throughput Preamble Format for Sounding PPDUs ....................................... 65
`9.1
`Sounding with a zero length packet .................................................................. 66
`9.2
`Sounding PPDU for calibration ........................................................................ 66
`9.3
`Sounding PPDU for channel quality assessment (informative) ........................ 67
`10
`Optional Features .................................................................................................. 67
`11
`References ............................................................................................................. 68
`Appendix A: Rate Dependent Parameters for High Throughput Modulation and
`Coding Schemes (MCS) ............................................................................................... 69
`Appendix B – LDPC Matrix Definitions .......................................................................... 78
`
`7
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`Appendix C – Acronyms .................................................................................................. 82
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`1 Introduction
`This document specifies those features of a device that are necessary to achieve
`interoperability. It specifies the signals that may be transmitted by the device and
`received by the device's receivers. This device is referred to as an HT (High
`Throughput) device.
`The HT device is assumed to be compliant with 802.11a/b/g/j standards. This
`document describes the extensions needed in the physical layer for high
`throughput transmission.
`
`2 PHY Interface
`The PHY interfaces to the MAC through the TX vector and the RX vector. The
`TX vector supplies the PHY with per-packet 1 TX parameters. Using the RX
`vector, the PHY informs the MAC of the received packet parameters. The
`specification of this interface is outside the scope of this document.
`
`
`3 PLCP packet format
`Two new formats are defined for the PLCP (PHY Layer Convergence Protocol):
`Mixed mode and Green Field. These two formats are called HT formats. Figure
`1 shows the legacy format and the HT formats. In addition to the HT formats,
`there is a legacy duplicate format (specified in section 4.8) that duplicates the
`20MHz legacy packet in two 20MHz halves of a 40MHz channel.
`
`Ass
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` Packet is equivalent to PPDU in this document.
`pre 11n product specification page 10
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`
` Green Field – in this mode high throughput packets are transmitted
`without a legacy compatible part. This mode is optional. In this mode the
`receiver shall be able to decode both Green Field mode packets, Mixed
`Mode packets and legacy format packets. An HT device which does not
`support the reception of a GF packet shall be able to detect that GF
`transmissions are HT transmissions (as opposed to legacy transmissions)
`and treat them as HT packets with a failing HT-SIG CRC.
`The operation of PHY in the frequency domain is divided to the following modes:
` LM – Legacy Mode – equivalent to 802.11a/g
` HT-Mode – In HT mode the device operates in either 40MHz bandwidth or
`20MHz bandwidth and with one to four spatial streams. This mode
`includes the HT-duplicate mode.
` Duplicate Legacy Mode – in this mode the device operates in a 40MHz
`channel composed of two adjacent 20MHz channel. The packets to be
`sent are in the legacy 11a format in each of the 20MHz channels. To
`reduce the PAPR the upper channel (higher frequency) is rotated by 90º
`relative to the lower channel.
` 40 MHz Upper Mode – used to transmit a legacy or HT packet in the
`upper 20MHz channel of a 40MHz channel.
`40 MHz Lower Mode – used to transmit a legacy or HT packet in the lower
`20MHz channel of a 40MHz channel
`LM is mandatory and HT-Mode for 1 and 2 spatial streams at 20MHz are
`mandatory at the AP. LM is mandatory and HT-Mode for 1 spatial stream at
`20MHz is mandatory for non-AP STAs.
`3.2 Modulation and Coding Scheme (MCS)
`The Modulation and Coding Scheme (MCS) is a value that determines the
`modulation, coding and number of spatial channels. It is a compact
`representation that is carried in the high throughput signal field.
`Rate dependent parameters for the full set of modulation and coding schemes
`(MCS) are shown in Appendix A in Tables A-1 through A-15. These tables give
`rate dependent parameters for MCSs with indices 0 through 76. MCS indices
`77-127 are reserved.
`
`MCS Tables A-1 through A-4 show rate-dependent parameters for equal-
`modulation MCSs in one, two, three, and four streams for 20 MHz operation.
`Tables A-5 through A-8 show rate-dependent parameters for equal-modulation
`MCSs in one, two, three, and four streams for 40 MHz operation. The same
`equal modulation MCSs are used for 20 MHz and 40 MHz operation. Table A-9
`shows rate-dependent parameters for the 40 MHz, 6 Mbps HT duplicate mode.
`
`pre 11n product specification page 12
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`The remaining Tables, 10 through 15, show rate-dependent parameters for the
`MCSs with unequal modulation for use with TxBF and unbalanced STBC modes
`including the N_SS=2, N_STS=3 case, and N_SS=3, N_STS=4 case as
`specified in Table 15. Tables A-10 through A-12 are for 20 MHz operation.
`Tables A-13 through A-15 are for 40 MHz operation. The same unequal
`modulation MCSs are used in 20 MHz and 40 MHz operation.
`
`MCS 0 through 15 are mandatory in 20 MHz with 800 nsec guard interval at an
`AP STA. MCS 0 through 7 are mandatory in 20MHz with 800ns guard interval at
`all STAs. All other MCSs and modes are optional, specifically including Tx and
`Rx support of 400 nsec guard interval, operation in 40 MHz, and support of
`MCSs with indices 16 through 76. The parameters in the table are:
` Rate: Coding Rate
` NSS: Number of Spatial Streams
` NSD: Number of Data Subcarriers
` NSP: Number of pilot subcarriers
` NBPSC: Number of coded bits per subcarrier per spatial stream
` NCBPS: Number of Code Bits Per OFDM Symbol (total of all spatial
`streams)
` NDBPS: Number of data bits per MIMO-OFDM symbol
` NTBPS: Total number of coded bits per subcarrier
`3.3 Transmitter Block Diagram (this section is informative)
`The transmitter is composed of the following blocks:
` Scrambler – scrambles the data to prevent long sequences of zeros or
`ones – see section 4.2.
` Encoder Parser – de-multiplexes the scrambled bits among NES FEC
`encoders, in a round robin manner.
` FEC encoders – encodes the data to enable error correction – an FEC
`encoder may include a binary convolutional encoder followed by a
`puncturing device, or an LDPC encoder
` Stream Parser – divides the output of the encoders into blocks that will be
`sent to different interleaver and mapping devices. The sequences of the
`bits sent to the interleaver are called spatial streams.
`Interleaver – interleaves the bits of each spatial stream (changes order of
`bits) to prevent long sequences of noisy bits from entering the FEC
`decoder.
`
`
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` QAM mapping – maps the sequence of bit in each spatial stream to
`constellation points (complex numbers).
` Spatial Mapping – maps spatial streams to different transmit chains. This
`may include one of the following:
`o Direct mapping – each sequence of constellation points is sent to
`a different transmit chain.
`o Spatial expansion – each vector of constellation points from all the
`sequences is multiplied by a matrix to produce the input to the
`transmit chains.
`o Space Time Block coding – constellation points from one spatial
`stream are spread into two spatial streams using a space time
`block code.
`o Beam Forming - similar to spatial expansion: each vector of
`constellation points from all the sequences is multiplied by a matrix
`of steering vectors to produce the input to the transmit chains.
`Inverse Fast Fourier Transform – converts a block of constellation
`points to a time domain block.
` Cyclic shift insertion – inserts the cyclic shift into the time domain block.
`In the case that spatial expansion is applied that increases the number of
`transmit chains, the cyclic shift may be applied in the frequency domain as
`part of spatial expansion.
` Guard interval insertion – inserts the guard interval.
` Optional windowing – smoothing the edges of each symbol to increase
`spectral decay
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`
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`Parameter
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`Table 1 - Timing related constants
`Value in legacy
`Value in
`20MHz channel
`20MHz HT
`channel
`
`
`
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`8µsec=2×
`TFFT+TGI2
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`8µsec
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`8µsec
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`4µsec= TFFT+TGI
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`4µsec
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`4µsec
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`Ass
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` This value used for HT duplicate mode
`pre 11n product specification page 16
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`Value in 40MHz
`channel
`
`HT
`format
`108
`
`Legacy
`Duplicate
`482
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`41
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`6
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`114
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`58
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`312.5kHz
`(40MHz/128)
`
`3.2µsec
`
`0.8µsec
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`1.6µsec
`0.4µsec
`
`8µsec
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`48
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`4
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`52
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`26
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`52
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`4
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`56
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`28
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`312.5kHz
`(20MHz/64)
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`3.2µsec
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`312.5kHz
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`3.2µsec
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`0.8µsec= TFFT/4
`
`0.8µsec
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`1.6µsec
`0.4µsec= TFFT/8
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`1.6µsec
`0.4µsec
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`8µsec=10× TFFT/4 8µsec
`
`NSD: Number of
`data subcarriers
`NSP: Number of
`pilot subcarriers
`NST: Total Number
`of subcarriers
`NSR: Number of
`subcarriers
`occupying half of
`the overall BW
`F : subcarrier
`frequency spacing
`TFFT: IFFT/FFT
`period
`TGI: Guard Interval
`length
`TGI2: Double GI
`TGIS: Short Guard
`Interval length
`TL-STF: Legacy
`Short training
`sequence length
`TL-LTF: Legacy Long
`training sequence
`length
`TSYM: Symbol
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`Parameter
`
`Value in legacy
`20MHz channel
`
`
`
`
`
`Value in
`20MHz HT
`channel
`
`
`Value in 40MHz
`channel
`
`HT
`format
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`Legacy
`Duplicate
`
`Interval
`TSYMS: Short GI
`Symbol Interval
`TL-SIG
`THT-SIG
`THT-STF: HT STF
`time
`THT-LTF1: HT first
`long training field
`length
`THT-LTFs: HT second,
`and subsequent,
`long training fields
`length
`
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`3.6µsec=
`TFFT+TGIS
`4µsec= TSYM
`NA
`NA
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`3.6µsec
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`3.6µsec
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`4µsec
`8µsec= 2TSYM
`4µsec
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`4µsec
`8µsec
`4µsec
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`NA
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`NA
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`4µsec in mixed
`mode, 8usec in
`green field
`4µsec
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`4µsec in mixed
`mode, 8usec in
`green field
`4µsec
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`Symbol
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`CBPSN
`N
`CBPSS
`DBPSN
`BPSCN
`STSN
`SSN
`ESSN
`TXN
`ESN
`LTFN
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`Table 2 - frequently used parameters
`Explanation
`Number of coded bits per symbol
`
`Number of coded bits per symbol per spatial stream
`
`Number of data bits per symbol
`
`Number of coded bits per single carrier
`
`Number of space time streams
`
`Number of spatial streams
`
`Number of extension spatial streams
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`Number of transmit chains.
`
`Number of FEC encoders
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`Number of HT long training fields
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`pre 11n product specification page 17
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`The transmitted signal is described in a complex base-band signal notation. The
`actual transmitted signal is related to the c