Paper Info
Title
Hybrid Analog-Digital Beamforming in Cooperative mmWave MIMO Systems
Abstract
This paper investigates hybrid beamforming design in cooperative millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems. We focus on the sum-rate maximization problem and aim to design the hybrid beamformer to maximize the weighted achievable sum-rate subject to the constraint of maximum transmit power for all base stations (BSs) and the constant modulus of phase shifters (PSs). Due to nonconvexity of the weighted sum-of-logarithmic function, we firstly transform the objective function into an equivalent form with the aid of fractional programming (FP) theory. Then, we propose an iterative hybrid beamforming algorithm, in which manifold optimization is first employed to solve analog beamformer and then a closed-form solution of digital beamformer is derived by Lagrange multiplier method. Numerical results demonstrate the remarkable advantages of proposed hybrid beamforming algorithm compared with other classical approaches.
Year
DOI
Venue
2021
10.1109/GLOBECOM46510.2021.9685913
2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)
Keywords
DocType
ISSN
Millimeter-wave (mmWave) communications, hybrid beamforming, cooperative network, massive multiple-input multiple-output (MIMO)
Conference
2334-0983
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Pengfei Ni111.36
Rang Liu2255.71
Ming Li374.48
Qian Liu46514.07