Power Constrained Gradient Decent Detection for V-BLAST System

摘要：

For Vertical Bell Laboratories Layered Space-Time(VBLAST) system, we propose a linear multiple-input multiple-output(MIMO) detection algorithm which uses the transmit power constraints to reduce the search range in a linear space and uses the continuous gradient search method to get the optimal solution. The simulation results show that Power Constrained Gradient Decent Detection (PCGDD) detection performance is significantly better than linear detection algorithms zero forcing(ZF) and close to the minimum mean squares estimation(MMSE) detection performance. Furthermore, compared to the MMSE detection, power constrained gradient decent detection (PCGDD) omits the noise detection part and works effectively in high noise environments. So it has a lower computational complexity and a better robustness.

关键词： V-BLAST MIMO power constrained gradient detection

作者: Xiaofeng Lu Li Zhang Shuhua Liu Jinjin Cao

作者单位: State Key Laboratory of Integrated Services Networks, Xidian University, Xian, China

会议类型: 国际会议

会议名称: 2011 International Conference on Computer Science and Network Technology(2011计算机科学与网络技术国际会议 ICCSNT 2011)

会议地点: 哈尔滨

会议语种:英文

页码: 1997-2000

在线出版日期: 2011-12-24（万方平台首次上网日期，不代表论文的发表时间）