摘要
针对MIMO(多输入多输出)通信系统中传统的基于软干扰消除和MMSE(最少均方误差)滤波器的迭代接收方案对信道相关性较敏感的问题。提出了一种基于混合干扰消除(软干扰消除和硬干扰消除)以及MMSE滤波器的检测算法,并引入一个确信机制来控制错误传播问题。仿真结果表明,新算法相比传统的算法在相关信道环境下有明显的性能增益。定性的计算复杂度分析表明新算法在恰当的系统配置下比传统算法具有更低的计算复杂度。
In MIMO communication system the conventional iterative receiver based on soft interference cancellation and MMSE filtering is sensitive to the channel correlation, For this reason a new soft input soft output detector is presented in this paper, which is based on hybrid interference cancellation. Simulation results demonstrate that under the correlated channels this new algorithm has a moderate gain over the conventional one, and the analysis shows that compared with the conventional one, the new algorithm has even lower computational complexity under appropriate system configuration.
出处
《通信学报》
EI
CSCD
北大核心
2006年第3期110-114,共5页
Journal on Communications
基金
国家自然科学基金资助项目(60496310
60272046)
江苏省自然科学基金资助项目(BK2005061)
教育部博士点基金资助项目(20020286014)~~
关键词
MIMO通信
迭代接收机
软干扰消除
混合干扰消除
MIMO communication system
the iterative receiver
soft interference cancellation
hybrid interference cancellation
