Low-Complexity Detection Based on Landweber Method in the Uplink of Massive MIMO Systems

Xu BAO  Wence ZHANG  Jisheng DAI  Jianxin DAI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E101-B   No.11   pp.2340-2347
Publication Date: 2018/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017EBP3403
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
massive MIMO,  uplink detection,  Landweber method,  low complexity,  

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Summary: 
In this paper, we devise low-complexity uplink detection algorithms for Massive MIMO systems. We treat the uplink detection as an ill-posed problem and adopt the Landweber Method to solve it. In order to reduce the computational complexity and increase the convergence rate, we propose improved Landweber Method with optimal relax factor (ILM-O) algorithm. In addition, to reduce the order of Landweber Method by introducing a set of coefficients, we propose reduced order Landweber Method (ROLM) algorithm. An analysis on the convergence and the complexity is provided. Numerical results demonstrate that the proposed algorithms outperform the existing algorithm.