一种新的空时格码软判决自适应解码器

2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI:10.1109/ICPWC.2000.905794

Xue Yisheng, Zhuang Xuelong

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引用次数: 3

摘要

研究了时分多址通信链路中空时格码(STTC)的软判决自适应译码。为了充分利用连续下行时隙的前导，提出了双向处理(BD-P)方法，该方法利用基于两步LMS (TSLMS)的信道跟踪进行前向和后向自适应解码。计算机仿真结果表明，该解码器在慢速时变信道和中速时变信道上均能显著提高系统性能。此外，所提出的BD-TSLMS解码器的计算复杂度适中。

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A new soft-decision adaptive decoder for space-time trellis code

Soft-decision adaptive decoding of space-time trellis code (STTC) used in TDMA communication links is considered. To fully utilize preambles of successive downlink slots, bi-directional processing (BD-P) is proposed, which performs forward and backward adaptive decoding with two-step LMS (TSLMS) based channel tracking. Computer simulation shows that the proposed decoder can improve system performance distinctly on slowly or moderately fast time-varying channels. Besides, the computational complexity of the proposed BD-TSLMS decoder is modest.

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来源期刊

2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)

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