A Novel Space-Time LDPC code with Time Varying Precoding

摘要：

In this paper, a novel space-time low-density parity-check (LDPC) code with full diversity is studied. Precoded by time varying linear transformations (TVLT), space-time LDPC codes can achieve full transmit diversity gain without the intricate requirements of exhaustive tests according to the conventional criterions. A proposed lemma about the effects of TVLT on space-time codes is revised and reproved. With a view to the necessary condition of the application of TVLT to space-time codes, a tight upper bound on the minimum Hamming distances of LDPC codes is discussed. Combined with the favourable distance property of LDPC codes, the time varying precoding provides space-time codes with the full transmit diversity as well as the reasonable coding gain compared with that of the conventional counterparts.

关键词： low-density parity-check code time varying linear transformation multiple input multiple output.

作者: Zhao Ying Xiao Yang

作者单位: Institute of Information Science,Beijing Jiaotong University,Beijing,P.R.China

会议类型: 国际会议

会议名称: The IET 2nd International Conference on Wireless,Mobile & Multimedia Networks(第二届IET国际无线移动多媒体网络会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）