Joint channel estimation and multiuser detection for multipath fading channels in DS-CDMA systems

Sau-Hsuan Wu*, Urbashi Mitra, C. C. Jay Kuo

*此作品的通信作者

研究成果: Conference article同行評審

4 引文 斯高帕斯(Scopus)

摘要

The problem of joint blind channel estimation and multiple access interference (MAI) suppression for an asynchronous code-division multiple-access (CDMA) system is studied. A low-complexity sliding-window scheme based on the expectation maximization (EM) algorithm is developed for joint blind maximum a posteriori probability (MAP) multi-user detection (MUD) and stochastic maximum likelihood (ML) channel estimation in a dispersive fading channel. With multistage soft interference cancellation, MAI can be efficiently suppressed. Together with an initial value prediction method for algorithm initialization at each window, the proposed scheme can track fading channels on the fly with no phase ambiguities even when channel gains are close to zero.

原文English
頁(從 - 到)2411-2415
頁數5
期刊IEEE International Conference on Communications
4
DOIs
出版狀態Published - 2003
事件2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
持續時間: 11 5月 200315 5月 2003

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