一种联合优化的球形解码预处理方法

在多输入一多输出（MIM0）系统中，球形解码（SD）是一种非常有吸引力的解码方法。本文提出了一种针对SD的联合优化预处理方法，这种优化方法的核心是以一种联合的方式，通过一个排序迫零反馈均衡（0ZF-DFE）检测器来获得SD优化的初始搜索半径和优化的解码顺序。这个OZF-DFE区别于其它的预处理方法的一个显著特点是它内嵌在通用SD中。本文同时也提出了对SD本身的一种改进方法。仿真结果表明这种联合优化的策略在复杂度上相比其他优化方法，具有更优的性能。

A Joint Optimized Preprocessing for Sphere Decoder

A joint optimized preprocessing for sphere decoder is proposed for MIMO systems. The key idea of optimization is to firstly determine the initial radius and optimal detection order in a joint approach by running an ordered zero forcing decision feedback equalizer (OZF-DFE detector which is embedded in the regular sphere decoder. A minor improvement on the body of sphere decoder is also introduced in this paper. The simulation shows that complexity of the joint optimized sphere decoder is lower than others.