结束语
3GPP
LTE系统中,当发射天线为4时,采用
Householder变换将16个向量转化成矩阵,根据数据流层数的不同构成64个预编码矩阵.本文将16个Householder矩阵等效为5个Householder基础矩阵,并将每个基础矩阵通过树形的方法搜索码本.采用该方案不仅能减少码本的选择数目,而且比最优码本选择方案的计算复杂度降低一半多.在
3GPP
LTE系统中的仿真结果表明,本文方案与最优
预编码码本选择方案性能非常接近.参考文献:
[1]Love
DJ,HeathB
W,LauVKN,eta1.Anoverviewof
limitedfeedbackinwirelesscommunicationsystems[J].
IEEE
Journal
on
SelectedAreasin
Communications,
2008。26(8):1341 1365.
[2]LoveDJ,HeathRW.Limitedfoedbackunitaryprecod-
ingfororthogonalspace—time
block
codes[J].IEEE
Trans
on
SignalProcessing,2005,53(1):64-73.
[3]RohJC,RaoBD.Transmitbeamforminginmultiple an-
tenna
systemswithfinite
rate
feedback:aVQ-basedap
proach[J].IEEE
Trans
on
InformationTheory,2006,52
(3):1101-1112.
[4]王欣,罗汉文,余锋.基于有限反馈的MIMO空分复用预编码优化设计[J].上海交通大学学报,2008,42
(4):621-624.
WangXin,LuoHanwen,SheFeng.Theoptimalprecod—
er
designforspatialmultiplexingMIMOsystemwithlimit—
ed
feedback[J].JournalofShanghaiJiaotongUniversity,
2008,42(4):621-624.
[5】3GPP.TS36.211V8.6.0,Physicalchannelsandmodu.
1ation(release8)[S/OL].(2009-03.13)[2009.04.
12].http:∥删.39pp.ors/ftp/Specs/archive/36一se—
ries/36.2ll/.
[6]Beko
M,Xavier
J,BarrosoVAN,Noneoherentcommu-
nicationinmultiple antennasystems:receiverdesignand
codebook
construction[J].IEEE
Trans
on
Signal
Pro-
cessing,2007,55(12):57033715.
[7]Tuomaala
E,WangHaiming.EffectiveSINRapproachof
link
to
systemmappingin
OFDM/multi carrier
mobilenetwork[C]∥2nd
International
Conference
on
Mobile
Technology,Applicationsand
Systems.Guangzhou:
IEEEPress。2005:5.
LTE
3GPP LTE系统的预编码码本选择方案
作者:作者单位:刊名:英文刊名:年,卷(期):被引用次数:
林雪红, 牛凯, 贺志强, 林家儒, LIN Xue-hong, NIU Kai, HE Zhi-qiang, LINJia-ru
北京邮电大学,信息与通信工程学院,北京,100876
北京邮电大学学报
JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS2010,33(1)0次
参考文献(7条)
1.Love D J.Heath R u V K N An overview of limited feedback in wireless communication systems2008(8)
2.Love D J.Heath RW Limited feedback unitary precoding for orthogonal space-time block codes 2005(1)3.Roh J C.Rao B D Transmit beamforming in multiple-antenna systems with finite rate feedback:a VQ-based approach 2006(3)
4.王欣.罗汉文.佘锋 基于有限反馈的MIMO空分复用预编码优化设计[期刊论文]-上海交通大学学报 2008(4)5.3GPP TS 36.211 V8.6.0,Physical channels and modulation(release 8) 2009
6.Beko M.Xavier J.Barroso V A N Noncoherent communication in multiple-antenna systems:receiverdesign and codebook construction 2007(12)
7.Tuomaala E.Wang Haiming Effective SINR approach of link to system mapping in OFDM/multi-carriermobile network 2005
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