Extended one-shot decorrelating detector for asynchronous DS/CDMA systems

被引:0
作者
Kang, JW [1 ]
Lee, KB [1 ]
机构
[1] Seoul Natl Univ, Kwanak Gu, Seoul, South Korea
关键词
multiuser detector; decorrelator; CDMA; asynchronous system;
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
We propose an extended one-shot decorrelating detector (EOS-DD) which may be viewed as a generalized double window multiuser detector (DW-MD) for asynchronous direct-sequence code-division multiple-access (DS/CDMA) systems in frequency selective fading environments. The EOS-DD extends a processing window and the received signal over an extended window is utilized for decorrelating. The effects of the window size on BER performance are investigated by numerical analysis. Analysis and simulation show that the EOS-DD is superior to the one-shot decorrelating detector (OS-DD) and finite memory length truncated decorrelating detector (FIR-DD) in terms of noise enhancement and near-far resistance. It is also shown that the EOS-DD with window size 4 can provide significantly improved performance compared to the EOS-DD with window size 2.
引用
收藏
页码:1901 / 1909
页数:9
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