作者
Shu‐Ming Tseng
发表日期
2007/11
期刊
International Journal of Communication Systems
卷号
20
期号
11
页码范围
1285-1298
出版商
John Wiley & Sons, Ltd.
简介
We propose a fuzzy parallel interference cancellation (PIC) multiuser detection/vector channel estimation (VCE) scheme in Rayleigh fading channels. The VCE is based on a first‐order auto‐regressive model and an expectation‐maximization algorithm. The signal‐to‐interference ratio and signal‐to‐noise ratio are estimated from the vector channel model's parameters, and we adapt the weight of each interference cancellation path via fuzzy inference mechanism. The proposed fuzzy PIC and VCE cooperate in a way such that some of the fuzzy PIC input parameters come from the channel predictor and the fuzzy PIC makes the channel predictor be more accurate at the next PIC stage. Computing weights via fuzzy adaptive method adds insignificant complexity because it involves only table lookup. The simulation results show that the proposed fuzzy PIC/VCE scheme performs better than the improved PIC/vector …
学术搜索中的文章
SM Tseng - International Journal of Communication Systems, 2007