Concatenated space-time trellis codes with optimal puncturing patterns

被引：1
|
作者：
Abdool-Rassool, B [1 ]
Nakhai, MR [1 ]
Heliot, F [1 ]
Aghvami, H [1 ]
机构：
[1] Kings Coll London, Ctr Telecommun Res, London WC2B 5RL, England
来源：
IEE PROCEEDINGS-COMMUNICATIONS | 2005年 / 152卷 / 04期
关键词：
D O I：
10.1049/ip-com:20045100
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The performance of space-time trellis codes (STTCs) serially concatenated with convolutional codes and Bose-Chaudhuri-Hocquenghem codes is evaluated over quasistatic Rayleigh fading channels. The STTCs are used as inner codes since they provide diversity owing to their multi-antenna nature. The loss in spectral efficiency incurred due to the added redundancy from the outer codes is dealt with by constructing punctured STTCs. Optimal puncturing patterns are obtained based on the required rate of the code that provides full diversity and the best coding gain. This is performed for two-antenna, four-PSK STTCs with a varying number of transitional states. Results show low performance loss when high-state STTCs are punctured but high performance loss in a serially concatenated system. A trade-off is therefore obtained by deploying a concatenated system with a low-state punctured STTC against a high-state punctured STTC that suffers the least performance loss when punctured.
引用
收藏
页码：385 / 392
页数：8
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