Joint space-time transmit diversity and minimum mean square error equalization for MC-CDMA with antenna diversity reception

被引：0

作者：

Garg, D ^{[1
]}

Adachi, F ^{[1
]}

机构：

[1] Tohoku Univ, Dept Elect & Commun Engn, Sendai, Miyagi 9808579, Japan

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2004年 / E87B卷 / 04期

关键词：

mobile radio; MC-CDMA; MMSE equalization; space-time coding; transmit diversity;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, the space time transmit diversity (STTD) decoding combined with minimum mean square error (MMSE) equalization is presented for MC-CDMA downlink and uplink in the presence of multiple receive antennas. The equalization weights that minimize the MSE for each subcarrier are derived. From computer simulation, it was found that the BER performance of STTD decoding combined with MMSE equalization and M-r-antenna diversity reception using the weights derived in this paper provides the same diversity order as 2M(r)-antenna receive diversity with MMSE equalization but with 3 dB performance penalty and is always better than that with no diversity. The uplink BER performance can also be improved with STTD. but the error floor still exists. However, with 2-receive antennas in addition to 2-antenna STTD, the BER floor can be reduced to around 10(-5) even for the uplink.

引用

页码：849 / 857

页数：9

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