FULL-DIVERSITY DISTRIBUTED SPACE-TIME CODES WITH AN EFFICIENT ML DECODER FOR ASYNCHRONOUS COOPERATIVE COMMUNICATIONS
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員

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摘要We consider an asynchronous cooperative communication system where two distributed transmitters are communicating with one destination. In this paper, a bounded delay-tolerant time interleave reversal Alamouti code (BDT-TIR AC) is proposed. BDT-TIR AC achieves full diversity, given that the path delay difference is within a tolerance limit. Furthermore, we design an efficient maximum-likelihood (ML) decoder. By employing a divide-and-conquer strategy, the original decoding problem is decoupled into several sub-problems in small size. In fact, these sub-problems contain either Alamouti code structure or only four symbols. By parallel decoding on the sub-problems, the proposed ML decoder exhibits low complexity advantage in large scale problems. Simulations of BDT-TIR AC confirm the full diversity gain. The bit error rate performance of BDT-TIR AC in the considered asynchronous scenarios is comparable with that of synchronized Alamouti code, and outperforms the latest delay-tolerant space-time code.
著者Liu Y, Zhang W, Ching PC
會議名稱IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
會議開始日26.05.2013
會議完結日31.05.2013
會議地點Vancouver
會議國家/地區加拿大
詳細描述organized by IEEE Signal Processing Society,
出版年份2013
月份1
日期1
出版社IEEE
頁次5011 - 5015
電子國際標準書號978-1-4799-0356-6
國際標準期刊號1520-6149
語言英式英語
關鍵詞Asynchronous cooperative communication; full diversity; space-time code
Web of Science 學科類別Acoustics; Engineering; Engineering, Electrical & Electronic

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