llIIlIlllIlIlIllIlIllIllIllIIlllIIlIllIlllIIlIlllIllIIlIllIlIIlllIlllIllIIlIIIIIIIIIIIIIII
`US 20080108310A1
`
`119) United States
`112) Patent Application Publication
`Tong et al.
`
`110) Pub. No. : US 2008/0108310 A1
`May 8, 2008
`143) Pub. Date:
`
`154) CLOSED LOOP MIMO SYSTEMS AND
`METHODS
`
`176)
`)
`1
`
`Inventors: Wen Tong, Ottawa 1CA); Ming Jia,
`Ottawa 1CA); Jianglei Ma, Kanata 1CA);
`Peiying Zhu, Kanata 1CA); Hua Xu,
`Nepean 1CA); Dong-Sheng Yu, Ottawa
`1CA); Hang Zhang, Nepean 1CA);
`Mo-Han Pong, L'Original 1CA)
`
`Correspondence Address:
`SMART 4 BIGGAR
`P. O. BOX 2999, STATION D
`900-55 METCALEE STREET
`OTTAWA, ON K1P5Y6 (CA)
`
`121) Appl. No. :
`
`11/630, 391
`
`122) PCT Filed:
`
`Jun. 22, 2005
`
`186) PCT No. :
`
`PCT/CA05/00958
`
`) 3711c)11),
`12), 14) Date: Dec. 22, 2006
`
`Per
`Stream
`AMC
`200
`
`204
`
`Beal
`Former
`Vr
`/02
`
`SVD
`H=lJDV
`218
`
`Related U. S. Application Data
`
`160) Provisional application No. 60/581, 356, filed on Jun.
`22, 2004. Provisional
`application No. 60/582, 298,
`filed on Jun. 24, 2004. Provisional application No.
`60/601, 178, filed on Aug. 13, 2004. Provisional appli-
`cation No. 60/614, 621, filed on Sep. 30, 2004. Provi-
`sional application No. 60/619, 461, filed on Oct. 15,
`2004. Provisional application No. 60/642, 697, filed on
`Jan. 10, 2005.
`
`Publication Classification
`
`151) Int. Cl.
`HOT
`1/00
`152) U. S. Cl.
`
`12006. 01)
`
`. 455/69
`
`ABSTRACT
`157)
`Systems and methods for closed loop MIMO 1multiple
`input
`are provided.
`and multiple output) wireless communication
`formats
`Various transmit
`including
`and
`spatial multiplexing
`STTD are defined
`in which vector or matrix weighting
`is
`fed back from receivers. The
`information
`employed using
`feedback information may include channel matrix or SVD-
`based feedback.
`
`Measure MIMO
`Channel H
`208
`
`Measure MIMO
`Channel H
`210
`
`208
`
`SVD
`H=VDV
`212
`
`Reconstr0ct H
`2tH
`
`MIMO Feedback
`Channel
`214
`
`CQI Feedback
`Channel
`222
`
`AMCIFlgen
`Assignment
`, 220.
`
`ZTE, Exhibit 1007-0001
`
`

`

`Patent Application Publication May 8, 2008 Sheet 1 of 42
`
`US 2008/0108310 A1
`
`BS
`14
`
`BS
`14
`
`16
`
`BSC
`La
`
`ZTE, Exhibit 1007-0002
`
`

`

`Patent Application Publication May 8, 2008 Sheet 2 of 42
`
`US 2008/0108310 A1
`
`Network Interface
`(I. E. MSC)
`30
`
`Basebaod
`Processor
`22
`
`Transmit Circuitry
`N
`
`Control System
`za
`
`Receive Circuitry
`26
`
`FIG. 2
`
`40
`
`40
`
`Receive Circuitry
`38
`
`Baseband
`Processor
`34
`
`Cnntrnl System
`32
`
`Tr ansrnit Circuitry
`36
`
`Interface Circuitry
`42
`
`ZTE, Exhibit 1007-0003
`
`

`

`Patent Application Publication May 8, 2008 Sheet 3 of 42
`
`US 2008/0108310 A1
`
`E5
`
`ZTE, Exhibit 1007-0004
`
`

`

`Patent Application Publication May 8, 2008 Sheet 4 of 42
`
`US 2008/0108310 A1
`
`CD cD'
`
`~ IJJ
`CD
`
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`CD
`
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`
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`~ 5 CL
`
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`
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`
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`
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`
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`CD C
`
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`
`C- E
`CD ~
`so~
`
`I n
`
`8 CD ~
`
`ZTE, Exhibit 1007-0005
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 5 of 42
`
`US 2008/0108310 A1
`
`120
`
`118
`
`160
`
`152
`
`158
`
`160
`
`V)
`
`113
`
`115
`
`114
`
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`
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`
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`
`User g2
`
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`
`User 41
`
`134
`
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`
`X„X2 x, X„
`
`User g1
`
`Y~
`
`Yz
`
`User 41
`
`User 42
`
`ZTE, Exhibit 1007-0006
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 6 of 42
`
`US 2008/0108310 A1
`
`jJ
`
`il
`
`190
`
`AnteAAa GfatlPing
`
`lO OFDM Symlla|
`
`— D-Srro — O-STTl3 with AB
`
`— 20
`CL ia
`~15
`
`0
`
`0
`
`200
`
`400
`SUb-f'lfiar Inde
`
`800
`
`ZTE, Exhibit 1007-0007
`
`

`

`Patent Application Publication May 8, 2008 Sheet 7 of 42
`
`US 2008/0108310 A1
`
`184~
`Receiver-2
`Sub-channel
`
`182+
`Receiver-1
`Sub-channel
`
`'170
`
`174
`
`176
`
`2x2 SM
`
`Receiver-1
`
`Receiver-2
`
`0 ~0
`
`ZTE, Exhibit 1007-0008
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 8 of 42
`
`US 2008/0108310 A1
`
`Si -S, S, — 5„
`S„S, '
`0
`0
`0 S„S,
`'
`
`0
`
`8, — S,
`S, -S, '
`S3 S)
`
`S — S
`
`Ss -S~ S„S,
`
`'
`
`Antenna Grouping
`
`S, — S
`'
`S, S,
`0
`0
`
`S, -S,
`S, -S, '
`S, S,
`
`S„—
`S,
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`S, S,
`
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`
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`
`P
`
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`
`84
`
`S~
`
`8, — S, S„S,
`S„- S,
`
`'
`'
`
`S, S
`S, -5, '
`
`Antenna Selection
`
`3'treafAs, k
`
`0~&10000
`
`I:QJCH
`Qi3]10001
`
`Ob'l10010
`
`Pomrer
`Boosting
`
`Cj — — c
`
`C, =c
`
`C, =c
`
`S)
`0
`
`ZTE, Exhibit 1007-0009
`
`

`

`Patent Application Publication May 8, 2008 Sheet 9 of 42
`
`US 2008/0108310 A1
`
`0
`
`0
`S, S,
`0
`-S, I
`0
`S,
`0
`0 S„
`S,
`0
`
`S, -S, S, -S,
`S„S, '
`S, S,
`S, -S, '
`S, -S, "
`S, S; S, S;
`S, — S„S, — S,
`'
`'
`S, S,
`S, S,
`S,
`S,
`S)
`'
`S, -S„" Ss — S,
`
`8~ =
`
`Antenna Grouping
`S, -S, '
`0
`0
`S,
`0
`
`S,
`0
`
`0
`S,
`0
`S,
`
`— S Q
`0
`S,
`
`S, — S,
`0
`0
`0
`0
`'
`S,
`S,
`
`0
`S,
`S,
`0
`
`— S
`S,
`0
`
`S, — S,
`S)"
`S2
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`S, S,
`S, — S,
`
`S, — S'
`S, -S4
`5, S,
`S,
`
`S, -S,
`"
`S, S,
`'
`S, S,
`S, -S,
`S, -S„
`S, -S,
`S„ S6
`"
`S, S,
`
`B
`
`S, — S„" 5', — S,
`—. S„
`S, — S, ,
`S6
`'
`S, S,
`S,
`S,
`S, S, S„S,
`'
`Ss -S
`S, -S,
`SR S, '.
`S,
`g~
`S, -S„
`S6 -S
`S, S,
`
`S,
`
`S~
`
`ZTE, Exhibit 1007-0010
`
`

`

`Patent Application Publication May 8, 2008 Sheet 10 of 42
`
`US 2008/0108310 A1
`
`CQ . ~
`CD n
`a
`
`CD
`
`CD
`
`CD
`
`CD
`CD
`
`CD
`
`O z O
`
`ltl
`
`r1
`
`O O
`
`O O
`
`N
`
`rh
`
`ZTE, Exhibit 1007-0011
`
`

`

`Patent Application Publication May 8, 2008 Sheet 11 of 42
`
`US 2008/0108310 A1
`
`ZTE, Exhibit 1007-0012
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 12 of 42
`
`US 2008/0108310 A1
`
`O O ~ O
`
`C3
`
`O O O
`
`O
`
`CD
`CD
`CO
`CU
`
`CD
`
`CD C)
`
`O
`CI ~ O O
`
`O O O
`O O ~ O
`O
`
`O ~ O
`
`O
`O O O
`
`O O O
`r O
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`
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`O O O
`
`O O
`
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`O O O
`
`O O
`
`O
`Q O 0
`
`O
`O ~ O O
`O O
`
`ZTE, Exhibit 1007-0013
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 13 of 42
`
`US 2008/0108310 A1
`
`409
`
`TINB
`
`Q Pilot for Ant-0
`
`402 ~ Pilot' for AKt-2
`
`406
`
`Q Puooture Pilot for Ant-1
`408 Q Puooture Pilot for Aot-3
`
`ZTE, Exhibit 1007-0014
`
`

`

`Patent Application Publication May 8, 2008 Sheet 14 of 42
`
`US 2008/0108310 A1
`
`~Otion 1
`
`Frequency
`
`Tlm8
`
`FIG. 18
`
`ZTE, Exhibit 1007-0015
`
`

`

`Patent Application Publication May 8, 2008 Sheet 15 of 42
`
`US 2008/0108310 A1
`
`Freqoency
`
`taboo 2
`
`gO
`
`420
`
`TIIM
`
`Q Pilot for Ant-0
`Q Pilot for Aot-2
`
`Q Pilot for Aot-'I
`
`Q} Pilot for Aot-3
`
`ZTE, Exhibit 1007-0016
`
`

`

`Patent Application Publication May 8, 2008 Sheet 16 of 42
`
`US 2008/0108310 A1
`
`~0tl0
`
`'I
`
`Frequency
`
`Time
`
`Q Pilot for Ant-0 Q Pilot for ArIt-1 Q Pilot for Ant-2 {Q Pilot for ArIt-3
`
` Pilot for Ant-4 Pilot for Ant-5 Q Pilot for Ant-6 Pilot for Ant-7
`
`ZTE, Exhibit 1007-0017
`
`

`

`Patent Application Publication May 8, 2008 Sheet 17 of 42
`
`US 2008/0108310 A1
`
`Frequericy
`
`~0tion 2
`
`440
`
`TIAle
`
`Q Pilot for Ant-ff Q Pilot for Ant-1 Q Pilotfor Ant-2 6 Pnot for Ant-3
`6 Pilot for Ant-4 Q Pilot for Ant-5 Q Pilot for Ant-6 Pilot for Ant-7
`
`ZTE, Exhibit 1007-0018
`
`

`

`Patent Application Publication May 8, 2008 Sheet 18 of 42
`
`US 2008/0108310 A1
`
`~olios 1
`
`Frequsney
`
`Time
`
`Q Pilot for Ant-0 Q Piiatfor Ant-i Q Pilot for Ant-2 () Pilot for Ant-3
`Q Pilot for Ant-4 6I Pilot for Ant-5 Q Pilot for Ant-8 Pilot for Ant-7
`Q Pilot for Ant-8 9 Pilot for Ant-9 O Pilot for Ant-10 Q Pilot for Ant-11
`
`ZTE, Exhibit 1007-0019
`
`

`

`Patent Application Publication May 8, 2008 Sheet 19 of 42
`
`US 2008/0108310 A1
`
`Option 2
`
`Frequency
`
`458
`
`Q PilotforAnt-0 Q Pilotfor Ant-i Q PilotforAok-2 9 Pilotfor Ant-3
`O Pilot far Ant-0 Pilot far Ant-5 Q Pilot for Ant-6 Pilot for Ant-7
`Q Piiot for Ank-8 9 Pilokfar Ant-9 I Pilotfor Ant-10 Q Pilotfor Ant-ll
`
`ZTE, Exhibit 1007-0020
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 20 of 42
`
`US 2008/0108310 A1
`
`Non Pre-coded Channel H for:
`
`1, Current H Analysis and Future
`Feedback
`2. Other Users (Including Non-lVlIMOI
`to Assist Channel Interpolation
`
`Pre-Coded Data
`453
`
`Re-Encode the Non Pre-Coded
`Channel H for:
`
`'I, Coherent Demodulation
`
`of current Llser
`
`ZTE, Exhibit 1007-0021
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 21 of 42
`
`US 2008/0108310 A1
`
`485
`
`461
`
`461
`
`462
`
`462
`
`48)
`
`ZTE, Exhibit 1007-0022
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 22 of 42
`
`US 2008/0108310 A1
`
`Frequency
`
`Sub chair(el
`for MSS1
`i500
`0 Oata carrier for MS81
`Q) Pilot carrier' fer Msst (Ant 0) Q Pilot carrier for Mss2 (Ant c)
`510
`
`504
`
`606
`
`45 Pilot Carrier for MSSl (Ant t)
`
`St(b. channal
`for MSS2
`&50&
`
`(mY Data carrier for M882
`
` pilot Carrier for MSS2 (Ant t)
`
`FIG. 26
`
`ZTE, Exhibit 1007-0023
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 23 of 42
`
`US 2008/0108310 A1
`
`CQ
`
`CQ
`
`I
`
`CD m~g
`
`R ~~
`
`P.
`
`cU
`
`C/J
`
`ZTE, Exhibit 1007-0024
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 24 of 42
`
`US 2008/0108310 A1
`
`Freqljency
`
`Tice
`
`Sub-channel
`for MSS1
`
`SUb-f:hennel
`for IUISS2
`
` Data carrier for MSS2
`Q Data carrier for MSS1
`i/i Pilot Carrier for MSSl {Ant 0} Q Piiot Carrier for M882 (Ant 0)
`~ PuncturedPilot Car'rier for
`~ Ponctured Pilot Carrier for
`~ MSsl IAnt 1)
`~ Mss2(Ant 1I
`Q Pilot Carrier for MS81 (Ant 2) Pilot Carrier for M882 (Ant 2)
`
`ZTE, Exhibit 1007-0025
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 25 of 42
`
`US 2008/0108310 A1
`
`Frequericy
`
`TIIH
`
`SL)b-channel
`for MS81
`
`/
`
`Sub-channel
`for MSS2
`
` Oata carrier for MSS2
`Q Oata carrier for IVISS1
`9 Pilot Carrier for MSS] (Ant 0} O Pilot Carrier for IVISS2 (Ant O}
`~ Punctured Pilot Carrier for
`~ VSS2 (ant1j
` Pilot Carrier for MBS2 (Ant 2)
`9 Pilot Carrier for MSS2 (Ant 3)
`
`Punctured Pilot Carrier for
`MSS1 IAnt 1j
`Q Pilot Carrier for IVIBSI (Ant 2)
`Q Pilot Carrier for MBBI (Ant 3)
`
`1
`
`FIt". 29
`
`ZTE, Exhibit 1007-0026
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 26 of 42
`
`US 2008/0108310 A1
`
`Frequency
`
`Sob. channel for MSS1
`
`Sub-channel
`
`for MSS2
`
`Time
`
`Q Data carrier for MSS1
`
`I Pilot Carrier for Il/I881 {Ant 0)
`
`Q pilot Carrier for M881 {Ant 1)
`
` Data carrier far MSS2
`Q Pilot Carrier for M882 {Ant 0)
`Q pilot Carrier fnr II/I882 {Ant 1)
`
`ZTE, Exhibit 1007-0027
`
`

`

`Patent Application Publication May 8, 2008 Sheet 27 of 42
`
`US 2008/0108310 A1
`
`Frequency
`
`Tlrrle
`
`Sub-channel
`
`for MSS1
`
`Sub-vhsonel
`
`for MSS2
`
`Q Data carrier for MSS1
`9 Pilot Carrier for MSSt (Ant 0)
` Pilot Carrier for MSS'I (Ant t)
`~ MSS& {Ant2I
`M2~ PuncturedPilot Carrier for
`~ MSS& {inta)
`563~ Punctured Pitot Carrier for
`
`I) Data carrier for MSS2
` Pilot Carrier for MSS2 (Ant 0)
`
`O Pilot Carrier for M882 (Ant t)
`~ MSS2{Ant2}
`558~ PuncturedPilot Carrier for
`559~ Punctured Pilot Carrier for
`~ MSS2{Ant3I
`
`FIG. 31
`
`ZTE, Exhibit 1007-0028
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 28 of 42
`
`US 2008/0108310 A1
`
`600
`
`MIMO/STC
`Set UCi
`
`Beam-Former
`
`Feedback
`
`INIMOIBTI:
`
`Beam-Former
`
`Feedback
`
`Feedback
`
`808
`
`MIMDjSTC
`
`Beam-Former
`
`MIMO/STC
`
`Unitary
`Beam-Former
`Selection
`
`ZTE, Exhibit 1007-0029
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 29 of 42
`
`US 2008/0108310 A1
`
`Use Power to
`Transmit on Strong
`Eigen Modes
`
`Discard Weak
`Eigen INodes
`
`SVI3 with
`Bearnformer
`
`FIG. 33
`
`OFDM
`Domain
`
`Select Best Group
`Antenna with
`power Boosting
`
`TUrn Off a Group
`Antennas
`
`ZTE, Exhibit 1007-0030
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 30 of 42
`
`US 2008/0108310 A1
`
`+ AS-1 — SVD SB-I
`
`SN P8ffdfiTJBN'8
`
`lg
`~ ~
`sZ 41
`F1
`~ ~ ~ CQ
`
`gg W
`m
`Ctl
`
`CCI
`
`6
`
`12
`10
`8
`6
`4
`2 '0
`
`200
`
`400
`
`600
`
`800
`
`1000
`
`sub-t:arrier
`
`Index
`
`FIG. 35
`
`ZTE, Exhibit 1007-0031
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 31 of 42
`
`US 2008/0108310 A1
`
`VB L'i +SVD L1 eVB LZ &SVD LZ xVB L3 SVD L3 + AS-1 - SVD SB-1
`
`SVD Perfermanee
`
`'i 8
`
`g
`
`g~ Io
`
`200
`
`400
`
`800
`
`800
`
`t000
`
`Sub-Carrier
`
`Index
`
`ZTE, Exhibit 1007-0032
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 32 of 42
`
`US 2008/0108310 A1
`
`Per
`Stream
`AMC
`200
`
`Beam
`FOIAlel
`gT
`202
`
`Measure MIMO
`Channel H
`208
`
`Measure MIIVIO
`Channel H
`2'l 0
`
`208
`
`SV9
`H=VDV
`212
`
`SVD
`8=VDV
`218
`
`Reconstruct H
`Z1R
`
`MIMO Feedback
`Channel
`214
`
`GQI Feedback
`Channel
`222
`
`AMCIElgen
`Assignment
`, 220
`
`ZTE, Exhibit 1007-0033
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 33 of 42
`
`US 2008/0108310 A1
`
`SVO
`H=DDV
`2M
`
`iVieasore
`iVit VO
`Channel H
`246
`
`Differential
`Encoding of H
`248
`
`Per Str'earn AIVlC
`R
`BBBrn Fogger VT
`240
`
`SVD
`H=LIDV
`258
`
`Reconstruct H
`254
`
`M|MO Feedback
`Channel
`262
`
`ZTE, Exhibit 1007-0034
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 34 of 42
`
`US 2008/0108310 A1
`
`260
`
`Input
`
`270
`
`268
`
`Feedback
`Channel
`284
`
`Scalar
`Quarrtizer
`282
`
`+1
`1
`Quantizer
`286
`
`Z-r
`274
`
`Accumulator
`272
`
`I'IG. 39
`
`280
`
`Irlput
`
`286
`
`Limiter
`(ns, -ea)
`
`Dither Signal
`(5/8, -2/8, . . . )
`289
`
`288
`
`287
`
`Offset
`
`1-++6
`0~-0
`
`(+1 -1}
`
`1-bit
`Qualrtizer
`
`ZTE, Exhibit 1007-0035
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 35 of 42
`
`US 2008/0108310 A1
`
`Per Stream AMG
`
`Beam Former V'
`3'1 4
`
`IM&asure Mfllo
`Channel H
`
`r'
`300
`
`e
`
`Differential
`Encoding of H
`308
`
`Limited
`G audacity
`
`MeasUre
`iMIMO
`Ghanllel H
`3U6
`
`Differential
`Encoding of H
`310
`
`FIG. 41
`
`ZTE, Exhibit 1007-0036
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 36 of 42
`
`US 2008/0108310 A1
`
`Feedback Requiraeent
`
`INxN MIMO)
`
`8 of Tx
`
`Unitary Matrix
`
`Oirect H Matrix
`
`60
`
`112
`
`Complexity
`150. 00~/i)
`133 33%
`125. 00%
`I 20. 00'lo
`116. 67%
`
`112 60%
`
`ZTE, Exhibit 1007-0037
`
`

`

`Patent Application Publication May 8, 2008 Sheet 37 of 42
`
`US 2008/0108310 A1
`
`322
`
`Per
`stream
`AMC
`344
`
`Beam
`Forayer
`V
`320
`
`iVieasure MIMl0
`Channei H
`326
`
`SVD
`H=EIDV
`328
`
`324
`
`Reconstruct
`Beam
`Former
`Y=8iGZ
`340
`
`Reconstruct
`Parameter
`(0, c)
`338
`
`MIMO
`Feedback
`Channel
`336
`
`0uantize
`Parameter
`&e, cl
`334
`
`Givens
`Transform
`Y=81GZ
`330
`
`CQI Feedback
`Channel
`342
`
`AMC/Eigen
`Assignment
`343
`
`ZTE, Exhibit 1007-0038
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 38 of 42
`
`US 2008/0108310 A1
`
`350
`Input x
`
`II
`
`II
`
`II
`
`II
`
`360
`
`Shape
`guantizer
`
`Gain
`Ouantizer
`
`ZTE, Exhibit 1007-0039
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 39 of 42
`
`US 2008/0108310 A1
`
`per
`stream
`AMC
`344
`
`Beam
`Former
`'IJT
`320
`
`Measure MIMO
`Ghannel H
`326
`
`Construct
`Givens
`G=G1G2
`328
`
`Hyijothesls
`
`Test Set (0, 6
`362
`
`Reconstruct
`Beam
`Former
`V-8782
`340
`
`Reconstruct
`Parameter
`(0, c]
`338
`
`MIMO
`Feedback
`Channel
`336
`
`Select
`Parameter
`(0, c]
`366
`
`Search
`Mi imum
`3'64
`
`Grlteria
`360
`
`COI Feedback
`Channel
`342
`
`AIVIC/Eigen
`Assignment
`343
`
`ZTE, Exhibit 1007-0040
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 40 of 42
`
`US 2008/0108310 A1
`
`Pilot M„, n„o M„, 8„1 Pilot
`
`Symbol-0
`
`Mn, Gm. z Mn, om. a Mn, am+4 lk. sm. s
`
`Symbol-1
`
`saba
`
`Pilot
`
`Mn, nm~g Mn, nm ~7
`
`Piiat
`
`Symbol-2
`
`VeetOr IlideX
`
`Mn, 8m
`
`Mo, 8m+1
`
`Mn, 8m+7
`
`PO, P1, P2, P3, PO, Pl, P2, P3
`PO, P3, P2, P1, PO, P3, P2, P1
`PO, PO, P1, P1, P2, P2, P3, P3
`PO, PO, P3, P3, P2, P2, P1, P1
`PO, PO, PO, PO, PO, Po, PO, Po
`PD, P2, PO, P2, PO, P2, PO, P2
`PO, P2, PO, P2, P2, PO, P2, PO
`PO, P2, P2, PO, P2, PO, Pl3, P2
`
`PO=exp jx—
`
`pl =exp jx—
`
`I'2= exp — jx—
`
`3Ã
`
`P3= exp — jx—
`4
`
`ZTE, Exhibit 1007-0041
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 41 of 42
`
`US 2008/0108310 A1
`
`Antenna 0
`
`Antenna 1
`
`Mn, 8m+0 Mn, 8m 1
`
`PilOt
`
`lVin, 8m+0 Mn, Sm. i
`
`Symbol-0
`
`)Van, nm 2 Mn, sm. 3 Mn, 8m 4 Mn, sm. s
`
`&n, sm. e
`
`iVin, sm. 7
`
`lVI„„„M„„„,
`M„, . „M„„„symbo(-1
`M„Sm. , 8 M, S, . &
`
`Symbol-2
`
`Pilot
`
`-Mull Pilot
`
`FIG. 47
`
`Pattern
`
`Il
`
`~382
`
`Pattern
`
`t
`
`iVin, Sm. O Mn, 8r
`
`i
`
`PilOt
`
`Pilot
`
`lVin, sm a Mn, sm ~
`
`Symbol-0
`
`Mn, Sm. 2 Mn, em. 3 Mn, am+4
`
`iVin, sm. ~s
`
`lVin, am+2 Mn, 8m+3 Mn, 8m+4
`
`iVin, 8m+8
`
`Symbal-1
`
`iVin, sm. s Mn, am. ~
`
`iVin, 8m+8 Mn, am+7
`
`Pilot
`
`Symbol-2
`
`=Null Pilot
`
`ZTE, Exhibit 1007-0042
`
`

`

`PatentApplication
`
`Publication May 8, 2008 Sheet 42 of 42
`
`US 2008/0108310 A1
`
`Space Time Coding Matrix Set
`STC lVlatrix
`0 MIMQ output
`
`A2
`82
`C2
`
`82
`
`A A1
`8 81
`
`A A1
`8 81
`C C1
`
`A3
`
`A3
`B3 84 85 86
`C3 C4 C5 CB
`
`FIG. 49
`
`Space Time Gotling Matrix Set
`T%0
`Unitary
`Unitary
`Beam-Forming
`Stream
`Beam-Forming
`Vector
`Index
`Vector
`
`Single
`StfeaN
`Index
`
`V2
`
`V4
`
`V7
`
`FIG. 50
`
`ZTE, Exhibit 1007-0043
`
`

`

`US 2008/0108310 A1
`
`May 8, 2008
`
`CLOSED LOOP MIMO SYSTEMS AND METHODS
`
`RELATED APPLICATIONS
`[0001] This application claims the benefit of U. S. Provi-
`sional Patent Application No. 60/581, 356 filed on Jun. 22,
`2004, U. S. Provisional patent Application No. 60/582, 298
`filed on Jun. 24, 2004, U. S. Provisional Patent Application
`No. 60/601, 178 filed on Aug. 13, 2004, Provisional Patent
`Application No. 60/514, 621 filed on Sep. 30, 2004, Provi-
`sional Patent Application No. 60/619, 461 filed on Oct. 15,
`2004 and Provisional Patent Application No. 60/642, 697 filed
`on Jan. 10, 2005, all of which are hereby
`incorporated by
`reference in their entirety.
`
`FIELD OF THE INVENTION
`[0002] The invention
`to MIMO (multiple
`relates
`multiple output) systems and methods.
`
`input,
`
`BACKGROUND OF THE INVENTION
`[0003] In MIMO (multiple
`input multiple output) OFDM
`there
`frequency division multiplexing)
`(orthogonal
`systems,
`transmit antennas and multiple receive antennas
`are multiple
`and a plurality of sub-carriers
`that are available for transmis-
`sion between the transmit antennas and the receive antennas
`for either one or multiple users. New advances
`in MIMO
`OFDM systems are taught
`in Applicant's co-pending appli-
`cation &attorney docket 71493-1320& entitled "Pilot Design
`For OFDM Systems With Four transmit Antennas" filed Mar.
`15, 2005, and in Applicant's co-pending application &attor-
`ney docket 71493-1330) entitled "Wireless Communication
`Methods, Systems, And Signal Structures" filed Apr. 4, 2005,
`both hereby incorporated by reference in their entirety. With
`transmits on the
`the transmitter
`open loop implementations,
`and sub-carriers without
`the
`transmitter
`antennas
`multiple
`benefit of channel
`fed back from the receivers.
`information
`[0004] Efforts have been made to facilitate wireless closed-
`including broadband closed-
`loop MIMO communications
`loop MIMO, which might for example be based on OFDM
`closed-loop MIMO.
`schemes, and narrowband
`modulation
`Broadband closed-loop MIMO includes many sub-bands.
`Each of these sub-bands
`requires MTMO channel feedback
`for a closed-loop
`implementation. As a result the feedback
`for broadband
`closed-loop MIMO can
`resources
`required
`become quite
`closed-loop MIMO, by
`large. Narrowband
`includes one or a few sub-bands and requires a
`comparison,
`relatively smaller amount of feedback resources. Broadband
`and narrowband MIMO, therefore, have different applica-
`tions.
`
`SUMMARY OF THE INVENTION
`
`[0005] According
`to one broad aspect, the invention pro-
`vides a MIMO system comprising: a transmitter having mul-
`tiple transmit antennas; at least one receiver, each receiver
`having at least one receive antenna; each receiver being
`adapted to transmit at least one type of feedback information
`selected from a group consisting of: information
`for use in
`infor-
`performing beam-forming; antenna selection/grouping
`mation.
`
`[0006]
`to
`In some embodiments,
`a transmission
`format
`each receiver is selected from a group of transmission
`formats
`consisting of: spatial multiplexing; vector weighted
`spatial
`matrix weighted
`multiplexing;
`spatial multiplexing;
`
`employing more than K trans-
`K-stream spatial multiplexing
`mit antennas; single stream STTD; single stream STTD with
`proportional weighting and antenna selection; multi-stream
`STTD; multi-stream
`STUD with
`layer weighting; multi-
`stream STTD with a combination of layer weighting
`and
`proportional weighting; and hybrid beam-forming and spatial
`multiplexing.
`In some embodiments, a defined sub-set of available
`[0007]
`formats is made available for a given receiver, and wherein
`the given receiver feeds back a selection of one of the defined
`sub-set of available formats.
`[0008]
`In some embodiments,
`each receiver performs
`and feeds back information
`respective channel measurements
`for use in performing beam-forming based on the respective
`channel measurements.
`
`[0009] In some embodiments,
`for use in
`the information
`is selected from a group consisting
`performing beam-forming
`of: a) elements of a measured channel matrix; b) elements of
`a V matrix of a SVD decomposed channel matrix; c) param-
`eters of a Givens decomposition of a V matrix of a SVD
`decomposed channel matrix; d) parameters of a truncated
`Givens decomposition of a V matrix of a SVD decomposed
`are dis-
`channel matrix, where one or more eigen-vectors
`encoded elements of a measured
`carded; e) differentially
`encoded elements of a V
`channel matrix; fJ differentially
`matrix of a SVD decomposed channel matrix; g) differen-
`tially encoded parameters of a Givens decomposition or trun-
`cated Givens decomposition of a V matrix of a SVD decom-
`posed channel matrix; h) Householder decomposition;
`I) full
`scalar quantization of any of the information
`types of a)
`through h); j) partial scalar quantization of any of the infor-
`mation types a) through g); k) scalar quantization of any one
`of the information
`types a) through h) where varying resolu-
`I) vector quantization of
`tion is used to quantize parameters;
`any of the information
`types of a) through h); m) a combina-
`tion of scalar quantization
`for
`and differential quantization
`any of the information
`types a) through h); n) using a Delta
`Sigma quantizer for any of the information
`types a) through
`h); o) binary beam-forming weights; p) a differential
`index
`into a set of vector quantizations;
`and q) pre-defined code-
`book.
`[0010] In some embodiments
`feedback
`is
`beam-forming
`performed by each receiver as a function of receiver specific
`criteria.
`[0011] In some embodiments,
`the receiver specific criteria
`is selected from a group consisting of: Max SNR; b) Max
`Shannon capacity; and c) True receiver operational process.
`[0012] In some embodiments,
`antenna selection/grouping
`type selected from a
`is at least one information
`information
`group consisting of: a) selection between SM (spatial multi-
`plexing) and STTD (space time transmit diversity)
`transmis-
`sion format; b) selection of particular antennas for SM trans-
`mission; c) selection and grouping of particular antennas for
`STTD transmission;
`selection informa-
`and d) eigen-mode
`tion.
`
`[0013] In some embodiments,
`the system further comprises
`the receiver determining
`the antenna
`selection/grouping
`information by performing a step selected from a group of
`steps consisting of: performing SVD decomposition and dis-
`selecting antennas using deter-
`carding weak eigen-modes;
`minants of sub-MIMO channel matrices.
`
`ZTE, Exhibit 1007-0044
`
`

`

`US 2008/0108310 A1
`
`May 8, 2008
`
`[0014] In some embodiments,
`feed back and beam-forming
`is performed for sub-car-
`and/or antenna selection/grouping
`riers of a multi-carrier
`system to a resolution selected from a
`group consisting of: a) for every sub-carrier
`individually; b)
`for groups of consecutive sub-carriers; c) for an entire set of
`sub-carriers; d) for sets of groups of sub-carriers.
`[0015] In some embodiments,
`transmission matrices and
`feedback are in accordance with one of FIGS. 11 to 14.
`[0016] In some embodiments,
`the transmitter
`transmits
`pilots on each transmit antenna for use in performing channel
`estimation.
`[0017] In some embodiments, at least some of the pilots are
`punctured pilots.
`
`at least some of the pilots
`[0018] In some embodiments,
`comprise un-coded pilots for use by multiple receivers.
`[0019] In some embodiments,
`the pilots comprise user spe-
`cific pre-coded pilots for use by particular receivers receivers.
`[0020]
`In some embodiments,
`the pilots comprise user spe-
`cific pre-coded pilots for use by particular receivers receivers
`and un-coded pilots for use by multiple receivers.
`[0021] In some embodiments,
`are as
`the pilot patterns
`in any one of FIGS. 17-23 with generalizations
`as
`shown
`described.
`
`[0022]
`In some embodiments,
`are as
`the pilot patterns
`in one of FIGS. 26-31 with generalizations
`as
`shown
`described.
`
`[0023]
`feedback
`In some embodiments,
`is
`information
`transmitted using a feedback channel having the structure of
`one of FIGS. 46 to 4S with generalizations
`as described.
`
`[0024]
`In some embodiments,
`plurality of receive antennas.
`
`[0025]
`In some embodiments,
`prises a plurality of receivers.
`
`at least one receiver has a
`
`the at least one receiver com-
`
`[0026]
`In some embodiments,
`sub-channels
`are defined
`using at least one of; AMC sub-channels, where respective
`is defined for each AMC
`adaptive modulation
`and coding
`sub-channel; PUSC sub-channels.
`
`[0027]
`In another embodiment, a receiver is provided that is
`receiver functionality
`adapted to implement
`as summarized
`above.
`
`[0028]
`In another embodiment,
`a transmitter
`is provided
`that is adapted to implement
`functionality as sum-
`transmitter
`marized above.
`[0029] Other aspects and features of the present
`invention
`to those ordinarily
`will become apparent
`skilled in the art
`upon review of the following description of specific embodi-
`ments of the invention
`in conjunction with the accompanying
`figures.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0030] Preferred embodiments of the invention will now be
`described with reference to the attached drawings
`in which:
`[0031] FIG. 1 is a schematic diagram representation of a
`to one embodi-
`system according
`cellular communication
`ment of the present invention;
`
`[0032] FIG. 2 is a block diagram representation of a base
`station according to one embodiment of the present invention;
`[0033] FIG. 3 is a block diagram representation of a mobile
`terminal according to one embodiment of the present inven-
`tion;
`[0034] FIG. 4 is a logical breakdown of an OFDM trans-
`to one embodiment of the
`according
`mitter architecture
`present invention;
`[0035] FIG. 5 is a logical breakdown of an OFDM receiver
`to one embodiment of the present
`according
`architecture
`invention;
`
`[0036] FIG. 6 is a first example schematic diagram
`for
`beam-forming
`(SM) transmission using
`spatial multiplexing
`matrix or vector weighting according to an embodiment of the
`invention;
`
`[0037] FIG. 7 is a second example schematic diagram for
`SM transmission with matrix weighting
`beam-forming
`according to an embodiment of the invention;
`[0038] FIG. S is a schematic diagram for use in describing
`selection criteria;
`antenna/sub-channel
`[0039] FIG. 9 is a graphical comparison of fixed D-STTD
`(double-space-time
`time division)
`and antenna
`grouping
`D-STTD;
`[0040] FIG. 10 is a schematic diagram of sub-channel allo-
`cation for a 4-antenna transmitter and two 2-antenna receivers
`according to an embodiment of the invention;
`[0041] FIG. 11 is a closed loop STC/MIMO 3-transmit
`in accordance with
`arrangement
`antenna
`an
`grouping
`embodiment of the invention;
`
`[0042] FIG. 12 is a closed loop STC/MIMO 3-transmit
`in accordance with
`selection
`arrangement
`antenna
`an
`embodiment of the invention;
`
`[0043] FIG. 13 is a closed loop STC/MIMO 4-transmit
`in accordance with an embodiment of
`antenna arrangement
`the invention;
`
`[0044] FIG. 14 is a closed loop STC/MIMO 4-transmit
`in accordance with an embodiment of
`antenna arrangement
`the invention;
`
`[0045] FIGS. 15 and 16 show binary unitary beam-forming
`matrices in accordance with embodiments of the invention;
`[0046] FIG. 17 is pilot mapping
`for a pilot allocation for
`4-antenna BS (base station) for the optional FUSC (full uti-
`lization sub-channel) and Optional AMC (adaptive modula-
`tion and coding) zones in 802. 16d in accordance with an
`embodiment of the invention;
`
`[0047] FIGS. 1S and 19 are pilot mappings
`for a pilot allo-
`cation for four transmit antennas
`in which there is no punc-
`in accordance with an embodiment of the
`turing required
`invention;
`
`[0048] FIGS. 20 and 21 are pilot mappings
`for a pilot allo-
`cation for eight
`in accordance with an
`transmit antennas
`embodiments of the invention;
`
`[0049] FIGS. 22 and 23 are pilot mappings
`for a pilot allo-
`cation for twelve
`in accordance-with
`transmit antennas
`an
`embodiments of the invention;
`
`ZTE, Exhibit 1007-0045
`
`

`

`US 2008/0108310 A1
`
`May 8, 2008
`
`3
`
`[0050] FIG. 24 is a schematic diagram showing an example
`of pre-coding of MIMO pilots in accordance with an embodi-
`ment of the invention;
`[0051] FIG. 25 is a schematic diagram showing an example
`of pre-coding of MIMO pilots in accordance with an embodi-
`ment of the invention suitable for larger antenna arrays;
`[0052] FIG. 26 is a pilot mapping showing a pre-coded pilot
`design for a 2-antenna basestation (BS) for optional AMC in
`accordance with an embodiment of the invention;
`[0053] FIG. 27 is a second pre-coded pilot design for a
`2-antenna basestation (BS) for optional AMC in accordance
`with an embodiment of the invention;
`[0054] FIG. 2S is a pilot mapping showing a pre-coded pilot
`design for a 3-antenna basestation (BS) for optional AMC in
`accordance with an embodiment of the invention;
`[0055] FIG. 29 is a pilot mapping showing a pilot design for
`a 4-antenna basestation (BS) for optional AMC in accordance
`with an embodiment of the invention;
`[0056] FIG. 30 is a pilot mapping showing a pre-coded pilot
`design for a 2-antenna BS for PUSC (partial utilization sub-
`channel) zone in accordance with an embodiment of the
`invention;
`[0057] FIG. 31 is a pilot mapping showing a pre-coded pilot
`design for a 4-antenna ES for PUSC zone in accordance with
`an embodiment of the invention;
`[005S] FIG. 32 is a schematic diagram of a set of closed
`loop STC/MIMO arrangements with beam-former structures
`in accordance with an embodiment of the invention;
`[0059] FIGS. 33, 34, 35 and 36 present a comparison of
`SVD (singular value decomposition)
`to antenna grouping;
`[0060] FIG. 37 is a block diagram of a system employing a
`in accordance with an embodi-
`direct differential encoding
`ment of the invention
`in which MIMO channel and CQI
`indication) are separately fed back;
`(channel quality
`[0061] FIG. 3S is a block diagram of a system employing a
`in accordance with another
`direct differential
`encoding
`embodiment of the invention
`in which MIMO channel and
`CQI are jointly fed back;
`[0062] FIG. 39 is a block diagram of a system employing a
`in accordance with an embodi-
`direct differential encoding
`ment of the invention
`I bit DPCM;
`featuring
`[0063] FIG. 40 is a block diagram of a system employing a
`in accordance with an embodi-
`direct differential encoding
`ment of the invention and using a I bit AZ modulator;
`[0064] FIG. 41 is a block diagram of a system employing a
`in accordance with an embodi-
`direct differential encoding
`ment of the invention for multiple users;
`[0065] FIG. 42 contains a table ofvarious direct differential
`encoding feedback in accordance with embodiments of the
`invention;
`[0066] FIG. 43 is a block diagram of a system employing an
`SVD based Givens trans form feedback in accordance with an
`embodiment of the invention;
`[0067] FIG. 44 is another example of an SVD based Givens
`trans form in accordance with an embodiment of the invention
`in which a further spherical code based quantization
`is per-
`formed;
`
`[006S] FIG. 45 is a block diagram of a system employing a
`in accordance with an
`receiver based Givens
`transform
`embodiment of the invention;
`[0069] FIG. 46 is an example of space-time coding for use
`in accor-
`on a CQICH (channel quality
`indication channel)
`dance with an embodiment of the invention
`suitable for a
`single input single output application;
`[0070] FIG. 47 is an example of space-time coding for
`CQICH in accordance with an embodiment of the invention
`suitable for supporting STUD;
`[0071] FIG. 4S is an example of space-time coding for
`CQICH in accordance with an embodiment of the invention
`suitable for SM (spatial multiplexing);
`[0072] FIGS. 49 and 50 are a set of tables for concatenation
`of STC (space-time coding)/MIMO with a beam-former
`in
`accordance with an embodiment of the invention.
`
`DETAILED DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`
`General Background and Example System Overview The
`following provides a glossary of some of the terms used in this
`application:
`
`AMC Adaptive Coding and Modulation
`BS or BTS Base Station
`CL MIMO Closed Loop MIMO
`
`CQI Channel Quality Indicator
`
`CQICF CQI channel
`DFT Discrete Fourier Transform
`FB Feedback
`FDD Frequency Duplex
`FFT Fast Fourier Transform
`
`MIMO Multiple Input Multiple