一种新的高效MMSE-SIC检测算法  

New Efficient MMSE-SIC Detection Algorithm

作　　者：包亚伟[1] 赵慧[1] 蒋华[2] 王文博[1] 吴斌[3] 

机构地区：[1]泛网无线通信教育部重点实验室北京邮电大学,北京100876 [2]北京电子科技学院,北京100070 [3]中国科学院微电子研究所,北京100029

出　　处：《系统仿真学报》2011年第7期1350-1353,共4页Journal of System Simulation

基　　金：国家自然科学基金(60976022);中央高校基本科研业务费专项(2009RC0115)

摘　　要：传统的V-BLAST系统检测算法,由于存在矩阵求逆的操作,其计算复杂度与发射天线数的立方成正比,在发射天线较多时,对接收机信号处理能力要求较高。于是提出了一种具有更低复杂度的排序串行干扰消除算法。该算法利用施密特正交化分解方法,有效地避免了循环矩阵求逆运算,在不降低误比特率性能的情况下,使得检测算法大为简化,其计算复杂度与发射天线数的平方成正比。同时,该算法使排序和检测过程相互独立出来,提高了算法应用的灵活性。Due to the operation of matrix inversion,conventional detection algorithm for V-BLAST system has such a high computational complexity as proportional to the third power of transmit antenna number.In particular,if there is more transmit antennas,it requires high signal processing capacity at the receiver.Therefore,a new MMSE serial interference cancellation（SIC） detection algorithm with lower complexity was proposed.The algorithm employs Schimidt orthogonalization decomposition to avoid cyclic matrix inversion,which will greatly simplify the algorithm without error performance degradation.The computational complexity is proportional to the second power of transmit antenna number.Meanwhile,the algorithm makes the ordering and detection proceed independently,which improves the flexibility of application.

关 键 词：垂直-贝尔实验室分层空时结构 最小均方误差 检测排序 施密特正交化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]