一种新的用于多天线系统的快速球形解码算法

本文提出了一种实现多输入—多输出(MIMO)无线系统最大似然(ML)信号检测的快速球形解码器框架,在本框架内,算法不需要确定半径参数,同时,在算法的搜索阶段只需要访问最少的树节点数,从而降低算法的复杂度。另外,当我们采用一种直接的Schnorr-Euchner枚举(SEE)方法时,本球解码框架可用于复数MIMO系统。仿真结果显示,和其它球形解码器相比,本解码器能大大提升最大似然(ML)检测的速度。

A New Fast Sphere Decoding algorithm for Multiple-Antenna Systems

In this paper,we propose a new fast sphere decoder (SD) for optimum maximum likelihood (ML) signal detection in multiple-input multiple output (MIMO) wireless systems,which avoids the need for radius parameter and visits minimum number of tree nodes.Moreover,when a direct Schnorr-Euchner enumeration (SEE) is utilized,the proposed SD can be used in complex MIMO systems. Numerical results validate that the proposed SD greatly speeds up the maximum-likelihood (ML) detection than other sphere detectors.