扫相空时比特交织编码调制  

Phase Sweep Space-Time Bit Interleave Coded Modulation

作　　者：黄韬[1] 袁超伟[1] 杨睿哲[1] 丁义[1] 

机构地区：[1]北京邮电大学通信网络综合技术研究所,北京100876

出　　处：《北京邮电大学学报》2007年第1期32-35,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60672132)

摘　　要：提出了扫相空时比特交织编码调制(PS-ST-BICM)方案,通过扩展扫相矩阵维数,使得相邻码矩阵之间存在一定的相关性,从而获得了更高的时间分集增益,可有效地抵抗块衰落引起的突发错误.给出了系统最优旋转矩阵的设计准则,以此获得最大化的分集增益和编码增益.从理论上分析了新方案的Singleton界和误码率性能.仿真结果表明,在Rayleigh块衰落信道下新方案的性能有很大改善.A phase-sweeping space-time bit interleave coded modulation （PS-ST-BICM） is presented. By expanding the dimensions of sweeping matrix, the correlation was achieved between the adjacent code matrices, and thereby the higher temporal diversity gain was realized which effectively avoided possible burst errors in block fading channels. The optimum design criterion of the rotation matrix was proposed to maximize both diversity and coding gain. Then the Singleton bound and BER performances were theoretically analyzed. The simulation results proved that the performance of the new scheme was improved greatly in the Rayleigh block fading channels.

关 键 词：比特交织编码调制 扫相 块衰落 

分 类 号：TN929.53[电子电信—通信与信息系统]