DocumentCode :
3013793
Title :
An SFBC-OFDM receiver with MLSE equalizer to combat multiple frequency offsets
Author :
Lee, Jyun-Yu ; Lin, Hsin-De ; Sang, Tzu-Hsien
Author_Institution :
Department of Electronics Engineering, National Chiao-Tung University, Hsinchu, Taiwan 30010, R.O.C.
fYear :
2012
fDate :
20-23 May 2012
Firstpage :
1524
Lastpage :
1527
Abstract :
Synchronization is an important issue arises when distributed multiple transmitters are deployed. Unlike conventional MIMO systems, cooperative transmitters may distribute geographically instead of co-locating at the same spot. Therefore, it is hard for the destination node to compensate multiple carrier frequency offsets (MCFOs) even if the cooperative transmitters use the same clock, and the conventional MIMO decoding strategy may not be suitable. In this paper, we consider cooperative SFBC-OFDM transmission with MCFOs. The proposed strategy carefully combines two sets of separately synchronized signal to mitigate inter-carrier interference (ICI). Maximum-likelihood sequence estimation (MLSE) and iterative interference cancellation is further deployed to improve performance. Simulation results show the diversity gain is maintained and an improved tolerance range of MCFOs is achieved.
Keywords :
Bit error rate; Equalizers; MIMO; Maximum likelihood estimation; OFDM; Receivers; Relays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul, Korea (South)
ISSN :
0271-4302
Print_ISBN :
978-1-4673-0218-0
Type :
conf
DOI :
10.1109/ISCAS.2012.6271539
Filename :
6271539
Link To Document :
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