MMSE Channel Estimation and Time Synchronization Tracking for Cooperative MIMO-OFDM with Propagation Delay Differences

被引：0
|
作者：
Ibing, Andreas [1 ]
Manolakis, Konstantinos [1 ]
机构：
[1] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, Fraunhofer Inst Telecommun, D-10587 Berlin, Germany
来源：
2008 IEEE INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATION SYSTEMS (ISWCS 2008) | 2008年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We propose a method for concurrent OFDM fine time synchronization to different stations with propagation delay differences, and a receiver based delay difference compensation method for MMSE channel estimation, which are needed to enable cooperative MIMO-OFDM transmission. Cyclic prefix removal is done dynamically with respect to the closest station, which allows for intersymbol interference free reception from all cooperating stations (if cyclic prefix length is adequately chosen). Pilot phase rotations caused by delay differences are compensated to allow for practical MMSE channel estimation with precomputed interpolation matrices. Simulative evaluation is done using 3GPP LTE parameters. Channel estimation mean square error and bit error rate curves show the method able to support cooperative MIMO-OFDM.
引用
收藏
页码：95 / 99
页数：5
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