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Abstract
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.
Keywords:
adaptive step-size
DS-CDMA
interference canceller
space-time code
Journal
IF:
4.4
Papers:
1.3W
Citations:
2.2W
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