Paper Info
Title
Line-Of-Sight Based Statistical 3d Beamforming For Downlink Massive Mimo Systems
Abstract
In this paper, we investigate the sum rate performance of a downlink transmission scheme for massive multipleinput multiple-output (MIMO) systems with a two-dimensional (2D) antenna array at the base station (BS). Assuming Rician fading conditions, we derive some properties of the channel's line-of-sight (LOS) component. Using these properties and under the assumption of only LOS information at the BS, the optimal beamforming vector for each user as well as the main guidelines for user scheduling are derived to maximize an approximation of the ergodic sum rate. Based on the optimal beamforming vector and the guidelines, a statistical three-dimensional (3D) beamforming downlink transmission scheme exploiting only the LOS information of each user is proposed. Numerical results show that the proposed scheme can achieve considerable sum rates while requiring much less channel state information (CSI) overhead at the BS, and is more attractive than the traditional zero-forcing and match-filtering schemes when the CSI at the BS is imperfect.
Year
DOI
Venue
2016
10.1109/ICC.2016.7510848
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
Field
DocType
ISSN
Beamforming,Computer science,MIMO,Communication channel,Antenna array,Real-time computing,Precoding,Rician fading,Telecommunications link,Channel state information
Conference
1550-3607
Citations 
PageRank 
References 
1
0.38
12
Authors
4
Name
Order
Citations
PageRank
Xiao Li132730.49
Shi Jin23744274.70
Himal A. Suraweera32639117.31
Xiqi Gao43043217.05