计算效率高的迭代多用户检测和解码

Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284) Pub Date : 1998-11-20 DOI:10.1109/ACSSC.1998.750939

S. Das, E. Erkip, B. Aazhang

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引用次数: 6

摘要

本文描述了一种卷积编码直接序列码分多址(DS-CDMA)系统中上行链路的迭代检测和解码方案。我们考虑最大后验(MAP)译码，并通过结合次优信道译码算法的迭代干扰抵消方案来降低复杂度。MAP优先级在每个迭代步骤中更新。我们研究了这种低复杂度方案的性能，并观察到它接近最优。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Computationally efficient iterative multiuser detection and decoding

We describe an iterative detection and decoding scheme for the uplink in a convolutionally coded direct sequence code division multiple access (DS-CDMA) system. We consider maximum-a-posteriori (MAP) decoding and reduce the complexity through an iterative interference cancelation scheme combined with a suboptimal channel decoding algorithm. The MAP priors are updated at every iteration step. We investigate the performance of this low complexity scheme and observe that it is close to optimal.

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Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284)

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