栅格编码调制和发射分集:设计标准和性能评估

ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384) Pub Date : 1998-10-05 DOI:10.1109/ICUPC.1998.733058

Siavash M. Alamoutil, V. Tarokh, P. Poon

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引用次数: 139

摘要

本文介绍了Alamouti(1998)提出的简单发射分集方案中栅格码的选择标准，并对其进行了综述。推导了软判决维特比译码的最佳度量，并计算了渐近编码增益。该设计方法使用2个发射天线和1个接收天线实现编码增益和分集顺序为2。研究还表明，在瑞利衰落条件下，针对AWGN优化的网格码与发射分集方案结合使用也是最优的。

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Trellis-coded modulation and transmit diversity: design criteria and performance evaluation

This paper presents the selection criteria for trellis codes used with the simple transmit diversity scheme proposed in Alamouti (1998) and reviewed in this paper. The optimum metrics for soft decision Viterbi decoding are derived and the asymptotic coding gains are calculated. The design method achieves both coding gain and a diversity order of 2 using 2 transmit antennas and 1 receive antenna. It is also demonstrated that trellis codes optimized for AWGN are also optimal for use in conjunction with the transmit diversity scheme in Rayleigh fading.

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ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384)

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