基于OSIC检测的线性疏散码传输方案

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.

An improved linear dispersion codes transmission scheme based on OSIC detection

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.