计算机应用与软件
計算機應用與軟件
계산궤응용여연건
COMPUTER APPLICATIONS AND SOFTWARE
2013年
11期
106-108,126
,共4页
徐亮%房卫东%唐建红%葛晓光
徐亮%房衛東%唐建紅%葛曉光
서량%방위동%당건홍%갈효광
LTE-A标准%MIMO技术%同步%频偏%PSS估计
LTE-A標準%MIMO技術%同步%頻偏%PSS估計
LTE-A표준%MIMO기술%동보%빈편%PSS고계
LTE-A standards%Multiple-input multiple-output ( MIMO) technology%Synchronisation%Frequency offset%PSS estimate
LTE-A中使用的OFDM( Orthogonal Frequency Division Multiplexing )技术对频偏非常敏感,很小的频偏会导致系统性能的急剧下降,一个好的时频估计算法能够大幅提高系统性能,是接收机设计中关键技术之一。提出一种基于4发4收MIMO( Multiple-Input Multiple-Output)的LTE-A下行共享链路的MSS(Multi-signal synchronization)同步方法,并利用C和LABVIEW进行了软硬件联合仿真验证。仿真结果表明,提出的同步算法较经典算法有1~2 dB的性能提升。
LTE-A中使用的OFDM( Orthogonal Frequency Division Multiplexing )技術對頻偏非常敏感,很小的頻偏會導緻繫統性能的急劇下降,一箇好的時頻估計算法能夠大幅提高繫統性能,是接收機設計中關鍵技術之一。提齣一種基于4髮4收MIMO( Multiple-Input Multiple-Output)的LTE-A下行共享鏈路的MSS(Multi-signal synchronization)同步方法,併利用C和LABVIEW進行瞭軟硬件聯閤倣真驗證。倣真結果錶明,提齣的同步算法較經典算法有1~2 dB的性能提升。
LTE-A중사용적OFDM( Orthogonal Frequency Division Multiplexing )기술대빈편비상민감,흔소적빈편회도치계통성능적급극하강,일개호적시빈고계산법능구대폭제고계통성능,시접수궤설계중관건기술지일。제출일충기우4발4수MIMO( Multiple-Input Multiple-Output)적LTE-A하행공향련로적MSS(Multi-signal synchronization)동보방법,병이용C화LABVIEW진행료연경건연합방진험증。방진결과표명,제출적동보산법교경전산법유1~2 dB적성능제승。
The OFDM ( orthogonal frequency division multiplexing ) technology used in LTE-A is very sensitive to frequency offset , even a small frequency offset will lead to the rapid decline in system performance .A good time-frequency estimation algorithm can significantly improve the system performance, therefore is one of the key techniques in receiver design .In this paper, we propose a multi-signal synchronisation ( MSS) method in LTE-A downlink with shared channel which is based on 4 ×4 MIMO, and carry out the software and hardware integrated simulating verification by C and LABVIEW tools .Simulation results show that the proposed synchronisation algorithm has 1~2 dB performance improvement than the classic algorithm .