DocumentCode :
2815352
Title :
Transmit Diversity Schemes for MIMO-OFDM Based Wireless Lan Systems
Author :
Yan, Wu ; Sun, Sumei ; Li, Yuan ; Liang, Yingchang
Author_Institution :
Inst. for Infocomm Res.
fYear :
2006
fDate :
11-14 Sept. 2006
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we study the performance of two transmit diversity schemes, the cyclic delay diversity (CDD) and the groupwise space time block code (G-STBC), for high throughput wireless local area network (LAN) system using orthogonal frequency division multiplexing (OFDM) and multiple input multiple output (MIMO) technologies. We compare the performance of CDD and the G-STBC transmission with the VBLAST transmission using both convolutional code (CC) and low density parity check (LDPC) code. We show that G-STBC provides the best performance in all the three transmission schemes. The performance of CDD depends both on the frequency diversity of the channel and the power of coding. CDD has better performance advantage for systems with smaller multi-path and with powerful coding schemes. CDD also has the advantage of being receiver transparent
Keywords :
MIMO communication; OFDM modulation; block codes; convolutional codes; diversity reception; matrix algebra; parity check codes; space-time codes; wireless LAN; LDPC code; MIMO-OFDM based wireless LAN systems; VBLAST transmission; convolutional code; cyclic delay diversity; frequency diversity; groupwise space time block code; low density parity check code; multiple input multiple output technologies; orthogonal frequency division multiplexing; transmit diversity schemes; wireless local area network; Block codes; Convolutional codes; Delay effects; Local area networks; MIMO; OFDM; Parity check codes; Space technology; Throughput; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
1-4244-0329-4
Electronic_ISBN :
1-4244-0330-8
Type :
conf
DOI :
10.1109/PIMRC.2006.254410
Filename :
4022703
Link To Document :
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