1. 上海交通大学 电子信息与电气工程学院,上海,200240
2. 国网四川省电力公司电力科学研究院,四川,成都,610041
纸质出版:2020
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陈曦, 吴天宝, 龚奕宇, 吕东旭, 贺光辉. 一种低复杂度近最优大规模MIMO检测算法[J]. 微电子学与计算机, 2020, 37(10): 48-53.
CHEN Xi, WU Tian-bao, GONG Yi-yu, et al. A low-complexity and near-optimal massive MIMO detection algorithm[J]. 2020, 37(10): 48-53.
为了提升大规模MIMO(Massive Multiple-input Multiple-output)检测算法的性能并降低其复杂度,本文提出了一种基于连续替换Richardson迭代的低复杂度近最优检测算法.该算法采用连续替换策略,提升了传统Richardson迭代的收敛速度;除此之外,提出了基于特征值估计的初始化策略,在较低的复杂度下进一步提升了算法性能.仿真结果表明该算法对比传统Richardson迭代性能提升显著,且在128×16规模MIMO系统中,当迭代次数为2,误比特率为10时相对于MMSE仅有0.06 dB的性能损失,而相对于Jacobi算法有2 dB的性能提升,算法复杂度降低了10.8%.文章还给出了该算法在Xilinx Virtex-7 FPGA平台的硬件实现结果,较其他算法有更高的吞吐率,达到了10.3 Mbps.
In order to improve the performance and reduce the complexity of Massive Multiple-input Multiple-output (MIMO) detection algorithm
a low-complexity near-optimal detection algorithm based on continuous replacement Richardson iteration is proposed. The algorithm adopts a continuous replacement strategy to improve the convergence speed of traditional Richardson iterations. In addition
an initialization strategy based on eigenvalue estimation is proposed
which further improves the performance of the algorithm at a low complexity. Simulation results show that the algorithm has a significant improvement over traditional Richardson iteration performance. In a 128×16 scale MIMO system
when the number of iterations is 2 and the bit error rate is 10
there is only 0.06 dB performance losscompared to MMSEs
and 2 dB performance improvement compared to Jacobis
while the algorithm complexity is reduced by 10.8%. The article also gives the hardware implementation results of the algorithm on the Xilinx Virtex-7 FPGA platform
which has a higher throughput rate than other algorithms
reaching 10.3 Mbps.
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