An improved linear dispersion codes transmission scheme based on OSIC detection  

基于OSIC检测的线性疏散码传输方案(英文)

作　　者：施风[1] 陈明[1] 程时昕[1] 

机构地区：[1]东南大学移动通信国家重点实验室,南京210096

出　　处：《Journal of Southeast University(English Edition)》2004年第2期139-142,共4页东南大学学报（英文版）

基　　金：GrantfromNokiaCompany

摘　　要：Linear dispersion codes (LDCs) were originally designed based on maximum likelihood detection. They do not have good performance when using ordered successive interference cancellation (OSIC) detection. In this paper,we propose a new improved linear dispersion codes transmission scheme to combat performance loss of original LDCs when using OSIC detection. We introduce an interleaver to each data substream transmitted over different antennas after LDCs encoder. Furthermore,a new computer search criterion for a linear transformation matrix is also proposed. New search criterion is to minimize the symbol error rate based on OSIC detection. Computer simulations show that the performance of proposed LDCs transmission scheme is better than the original LDCs.最早提出的线性疏散码是基于最大似然检测设计的 ,当使用排序的串行干扰抵消 (OSIC)检测时并没有好的性能 .本文提出了一种改进的线性疏散码传输方案 ,来克服原先的线性疏散码在OSIC检测时的性能损失 .在线性疏散码编码器后 ,在每个数据支路引入了一个交织器 .此外 ,提出了新的线性疏散码传输矩阵计算机搜索准则 .新的搜索准则是最小化OSIC检测时的误符号率 .计算机仿真表明 ,所提出的线性疏散码传输方案优于原来的线性疏散码 .

关 键 词：linear dispersion codes space-time codes INTERLEAVER ordered successive interference cancellation (OSIC) detection 

分 类 号：TN929[电子电信—通信与信息系统]