摘要
为了提高DS-CDMA系统的容量,提出了一种基于高斯-赛德尔(Gauss-Seidel)迭代算法的空时多用户检测算法.针对高斯-赛德尔迭代算法容易引起的误差扩散,改进算法同时从正反两个方向进行串行干扰消除,并借助最大似然序列准则进行判决,有效地抑制了误差扩散的影响.仿真结果表明,改进算法具有更快的收敛速度和更优的误码性能.
An improved Gauss-Seidel space-time multiuser detector is proposed to enhance the capacity of DS-CDMA system. The improved detector cancels interference successively in hi-polar directions and makes ML decision, which effectively weakens the error diffusion in original method. The result of simulation illustrates that the proposed method can offer higher convergence speed and better PER performance.
出处
《微电子学与计算机》
CSCD
北大核心
2008年第8期188-191,共4页
Microelectronics & Computer
