Joint Pilot Allocation and Pilot Sequence Optimization in Massive MIMO Systems
Joint Pilot Allocation and Pilot Sequence Optimization in Massive MIMO Systems
复制标题
大规模 MIMO 系统中的联合导频分配和导频序列优化
DOI:
10.1109/access.2020.2983215
复制
发表时间:
2020
期刊:
影响因子:
3.9
通讯作者:
Zhao Feng
中科院分区:
文献类型:
--
作者:
Nie Xinhua;Zhao Feng
Pilot contamination (PC) is recognized as a bottleneck for the achievable throughput of multi-cell massive multiple-input multiple-output (MIMO) systems. In this paper, we propose a joint pilot allocation and pilot sequences optimization (JPA-PSO) scheme to mitigate the effects of PC and maximize the system spectral efficiency (SE). Specifically, we first construct a range of pilot sequence in line with the coherent interval. Then, we establish an allocation basis by defining a similarity to distinguish PC among users. An angle of arrival (AOA) positioning method is designed to obtain the user's location information. Under the location information, we can monitor and estimate the distance between users in different cells to denote the potential interference of transmit power among users. Then, we execute pilot allocation strategy in line with the similarity and distance between users in different cells, that is, assign orthogonal pilots to the users with greater similarity and shorter distance. Finally, we provide a pilot sequence optimization algorithm to maximize the system SE. Simulation results verify that combining pilot allocation and pilot sequence optimization can significantly improve the system SE.
登录
查看更多内容
影响因子:
8.3
作者:
Hien Quoc Ngo;Larsson, Erik G.;Marzetta, Thomas L.
通讯作者:
Marzetta, Thomas L.
影响因子:
10.4
作者:
You, Li;Gao, Xiqi;Peng, Yan
通讯作者:
Peng, Yan
DOI:
10.1109/jsac.2014.2328098
发表时间:
2014-06-01
影响因子:
16.4
作者:
Andrews, Jeffrey G.;Buzzi, Stefano;Zhang, Jianzhong Charlie
通讯作者:
Zhang, Jianzhong Charlie
DOI:
10.1109/lcomm.2018.2803054
发表时间:
2018-04-01
期刊:
IEEE COMMUNICATIONS LETTERS
影响因子:
--
作者:
Kim, Kwihoon;Lee, Joohyung;Choi, Junkyun
通讯作者:
Choi, Junkyun
DOI:
10.1109/lcomm.2015.2409176
发表时间:
2015-09-01
期刊:
IEEE COMMUNICATIONS LETTERS
影响因子:
--
作者:
Zhu, Xudong;Wang, Zhaocheng;Qian, Chen
通讯作者:
Qian, Chen