Robust Bit-Level M-Algorithm for MIMO Detection  

作　　者：YANG Yuan YANG Yuan ZHANG Hailin ZHANG Hailin[1] 

机构地区：[1]State Key Laboratory of Integrated Services Networks, Xidian University, Xi＇an 710071, China [1]State Key Laboratory of Integrated Services Networks, Xidian University, Xi＇an 710071, China

出　　处：《Chinese Journal of Electronics》2009年第4期719-723,共5页电子学报（英文版）

摘　　要：This paper presents a robust and effi- cient detection algorithm for MIMO wireless systems. The proposed scheme employs a novel combination of bit- level signal representation, MMSE-preprocessing and M- algorithm. The proposed bit-level algorithm exploits the structure of the QAM constellation by separating each bit of the signal to reduce the associated complexity of the listing and metric updating steps. In the joint de- tection/decoding systems, the proposed scheme visits less number of nodes by exploiting the extrinsic information obtained by the decoder. Our scheme may be employed in the rank-deficient system. Simulation results demonstrate that the bit-level detector achieves almost the same perfor- mance as the existing M-algorithm and it achieves a more significant gain in terms of complexity reduction.

关 键 词：Multiple-input multiple-output （MIMO） Iterative detection M-ALGORITHM Bit-level. 

分 类 号：TN929.5[电子电信—通信与信息系统] F062.4[电子电信—信息与通信工程]