Adaptive step-size algorithm for the interference canceller in the space-time coded DS-CDMA system

doi:10.1109/lcomm.2004.832764

2004-07-01

PRE

J.H. Yi

Lee, JH

DOI：10.1109/lcomm.2004.832764

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摘要

En 中文

In this letter, we propose an adaptive step-size algorithm for the adaptive interference canceller (AIC) in the space-time coded DS-CDMA system. To improve the performance of the fixed step-size AIC (FS-AIC), the regular adaptive step-size algorithm is extended in complex domain and applied to the joint AIC and ML decoder scheme. Simulation results show that the joint adaptive step-size AIC (AS-AIC) and ML decoder scheme using the proposed algorithm has better performance than not only the conventional NIL decoder but also the joint FS-AIC and ML decoder scheme without much increase of the decoding delay and complexity.

Keyword:

adaptive step-size

DS-CDMA

interference canceller

space-time code