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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 .
The earliest proposed linear evacuation code is based on maximum likelihood detection design and does not have good performance when using ordered serial interference cancellation (OSIC) detection.This paper presents an improved linear evacuation code transmission scheme to overcome the original Loss of linear evacuation code during OSIC detection.An interleaver is introduced in each data branch after the linear evacuation coder.In addition, a new computer search criterion for linear evacuation code transmission matrix is proposed. The criterion is to minimize the symbol error rate in OSIC detection.Computer simulations show that the proposed scheme for linear evacuation codes is superior to the original linear evacuation codes.