带有并行分支的级连网格空时码研究  

Research on serially concatenated space-time trellis codes with parallel transitions

作　　者：李颖[1] 王新梅[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2004年第6期910-914,924,共6页Journal of Xidian University

基　　金：国家自然基金委员会和香港科技局联合基金资助项目(60131160742);国家自然科学基金资助项目(60272057);重庆市/信息产业部移动通信技术重点实验室开放课题

摘　　要：系统研究了带有并行分支的级连网格空时码,提出通过减少网格空时码状态数,来降低串行级连空时编码系统编译码复杂度的方案.给出级连空时码的设计方法,包括带有并行分支的网格空时码的设计以及对应外码的和交织器的选择.利用联合界的概念,分析其在准静态衰落信道下的性能.仿真显示,带有并行分支的级连网格空时码,不仅可有效地降低系统编译码复杂度,同时还具有较好的抗衰落性能.The space-lime trellis codes parallel transitions (PT-STTC) are proposed to decrease the complexity of the serially concatenated space-time code (SCSTC). The design of SCSTC, including the design of the PT-STTC, the corresponding outer encoder and the interleaver, is also described. Based on the concept of union bound, the performance of the SCSTC with the properly designed PT-STTC as the inner code is analyzed, too. Compared with the SCSTC with delay diversity as the inner code, the proposed PT-SCSTC can not only effectively decrease the complexity but also have approximate 1 dB coding gains.

关 键 词：网络空时码 非满秩空时码 带有并行分支网格空时码 串行级连系统 

分 类 号：TN911.22[电子电信—通信与信息系统]