论文部分内容阅读
分析了M C-CDM A系统的基本原理,提出了基于并行干扰抵消(P IC)的多级检测技术改进方案.该方案以一种改进的ORC(EORC)获得初始数据估计,且后续各级采用EGC技术.计算机仿真结果表明:与传统多级检测相比,改进方案经过一级P IC之后即可达到MM SE的性能;随着级数的增加,系统性能改善越来越小.在算法性能与复杂度之间折中考虑,三级P IC是比较实用的一种检测方案.
The basic principle of MC-CDM A system is analyzed and an improved multi-level detection scheme based on parallel interference cancellation (P IC) is proposed.The initial data estimation is obtained with an improved ORC (EORC) Using EGC technology.Computer simulation results show that compared with the traditional multi-level detection, the improved scheme can achieve MM SE performance after passing through a level of P IC.As the number of stages increases, the performance of the system is getting smaller and smaller.In the algorithm The compromise between performance and complexity, three P IC is a more practical test program.