Multiary turbo code fitting for unitary space-time modulation and its MAP decoding algorithm

被引：4

作者：

Zhang DaPeng ^{[1
,2
,3
]}

Lu Ju ^{[1
]}

Xu HongJi ^{[1
]}

Zhang XingYu ^{[1
]}

机构：

[1] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China

[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710077, Peoples R China

[3] First Aeronaut Coll AF, Dept Av Engn, Xinyang 464000, Peoples R China

来源：

SCIENCE CHINA-INFORMATION SCIENCES | 2010年 / 53卷 / 12期

基金：

中国国家自然科学基金;

关键词：

multiple-input multiple-output; unitary space-time modulation; turbo code; MAP decoding; diversity; WIRELESS COMMUNICATIONS; COMMUNICATION;

D O I：

10.1007/s11432-010-4111-9

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Unitary space-time modulation (USTM) fits for rapid Rayleigh flat fading channels as it can realize wireless communication when neither the transmitter nor the receiver knows the channel state information (CSI). However, an intrinsic problem is that only when the signal-to-noise ratio (SNR) is high can it give an ideal bit error rate (BER) performance. The existing bit-wise processing scheme of the combination of turbo code and USTM improves the BER performance and results in an unacceptable calculation complexity, storage and time delay problem. In this paper, we propose a multiary processing scheme and its corresponding multiary MAP decoding algorithm. Simulation results verify that our scheme can reduce the system complexity while keep a good BER performance. Furthermore, we present the first analysis of the reason for the BER performance deterioration of the combination scheme at low SNR with the help of the definition of USTM.

引用

页码：2610 / 2619

页数：10

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