%0 Journal Article
%T 高码率Turbo-OVCDM的叠加编码构造
%A 周素华
%A 周晶
%A 张茹
%J 北京邮电大学学报
%D 2016
%R 10.13190/j.jbupt.2016.01.014
%X 摘要 为解决Turbo-OVCDM译码复杂度随码率指数增长的问题,提出了一种新的、通用的Turbo-OVCDM编译码方案.该方案包括1)在发送端由2个或多个Turbo-OVCDM低速率码的码字通过直接的叠加编码生成高速率码的码字;2)在接收端通过串行干扰抵消进行译码.与传统的由单个编码矩阵直接构造重叠码分复用方法相比,新方案的译码复杂度大大降低.性能仿真证实了新方案的可行性.</br>The decoding complexity of traditional type of Turbo-overlapped code division multiplexing (OVCDM) increases exponentially with the code rate. To solve this problem, a new Turbo-OVCDM coding and decoding approach was proposed. The maximum sum-rate achieving strategy in Gaussian multiple access channels was used to construct point-to-point coding scheme. Superposition of two or more Turbo-OVCDM codes and serial interference cancellation were applied for coding and decoding respectively. Numerical results demonstrate the feasibility of the proposed approach.
%K 重叠码分复用
%K 串行干扰抵消
%K 叠加编码
%K 高斯多址信道&lt
%K /br&gt
%K Key words： overlapped code division multiplexing serial interference cancellation superposition coding Gaussian multiple access channel
%U http://journal.bupt.edu.cn/CN/abstract/abstract2835.shtml