Broad Coverage Precoder Design for Synchronization in Satellite Massive MIMO Systems

作     者：Guo, Weiran Lu, An-An Gao, Xiqi Xia, Xiang-Gen 

作者机构：Sci & Technol Informat Syst Engn Lab Nanjing 210007 Peoples R China Southeast Univ Natl Mobile Commun Res Lab Nanjing 210096 Peoples R China Purple Mt Labs Nanjing 211111 Peoples R China Univ Delaware Dept Elect & Comp Engn Newark DE 19716 USA 

出 版 物：《IEEE TRANSACTIONS ON COMMUNICATIONS》 (IEEE通讯汇刊)

年 卷 期：2021年第69卷第8期

页      面：5531-5545页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：National Key R&D Program of China [2018YFB1801103, 2017YFB1001800] Jiangsu Province Basic Research Project [BK201905002] National Natural Science Foundation of China [61801113, 61761136016, 61960206006, 61971136] Natural Science Foundation of Jiangsu Province [BK20180362] Huawei Cooperation Project 

主　　题：Satellites Massive MIMO Synchronization Manifolds Satellite communication Frequency synchronization Smoothing methods Massive MIMO precoder design URA power pattern synchronization manifold optimization 

摘      要：In this paper, we investigate the massive multi-input multi-output (MIMO) transmission for the satellite communication systems equipped with a uniform rectangular array (URA) and aim to design the precoder with broad coverage radiation power pattern to improve the performance of time and frequency synchronizations. The modified Cramer-Rao vector bounds (MCRVB) are chosen as the benchmark of symbol timing offset and frequency offset estimation problem, which can be viewed as the time and frequency synchronization performance metric for the broad coverage precoder design. By considering the minimax MCRVB criterion and the per-antenna equal power constraint, the precoder design approach is formulated as the non-convex constrained minimax problem over the discrete radiation power pattern. This optimization problem is solved by the smoothing techniques combined with the manifold optimization method. To reduce the calculation complexity, the nonmonotone conjugate gradient method is applied. Simulation results show that the average and the minimum received powers in the coverage area of the proposed scheme are higher than those of the scheme based on fairness criterion. Compared with the existing omnidirectional and broad coverage schemes, the proposed scheme has the best synchronization performance among all the contrast solutions.