东南大学学报（自然科学版）2016，Vol.46Issue(5)：905-911,7.DOI:10.3969/j.issn.1001-0505.2016.05.001
基于大规模MIMO系统的满分集VBLAST低复杂度译码算法
Decoding algorithm with low complexity for rate one VBLAST with full diversity based on massive MIMO system
摘要
Abstract
To improve the diversity gain of the massive multiple-input multiple-output (MIMO)sys-tem and reduce the decoding complexity,a kind of rate one vertical bell laboratories layered space time (VBLAST)code with full diversity is designed,and the received signals are detected by a low complexity algorithm,named maximum ratio combining (MRC)algorithm.The average output sig-nal-to-interference-noise ratio (SINR)of this algorithm and the average output signal-to-noise ratio (SNR)of the traditional zero-forcing (ZF)algorithm are calculated,respectively.The conditions of equal performance are analyzed.The computational complexity and the bit error rate performance of these two algorithms are compared.The results show that the MRC algorithm can provide a gain of 0.4 and 0.3 dB than the ZF algorithm when the bit error rate (BER)is 10 -5 and the numbers of the transmit antennas are 400 and 40 for binary-phase shift keying (BPSK)and quadrature-phase shift keying (QPSK),respectively.The MRC algorithm can decrease the computational complexity and ensure the bit error rate performance in the massive MIMO system.关键词
大规模MIMO系统/VBLAST/误比特率/信噪比Key words
massive multiple-input multiple-output (MIMO)system/vertical bell laboratories lay-ered space time (VBLAST)/bit error rate(BER)/signal-to-noise ratio(SNR)分类
信息技术与安全科学引用本文复制引用
李正权,沈连丰,吴名,王志功,贾子彦,宋铁成..基于大规模MIMO系统的满分集VBLAST低复杂度译码算法[J].东南大学学报（自然科学版）,2016,46(5):905-911,7.基金项目
国家自然科学基金资助项目（61271207，61372104，61571108）、中国博士后科学基金资助项目（2012M511175）、东南大学移动通信国家重点实验室开放课题资助项目（2011D18）、国家电网公司科学技术资助项目（SGRIXTKJ［2015］349号）． （）
