Name
Title | ||
|---|---|---|
Dynamic RF Chain Selection for Energy Efficient and Low Complexity Hybrid Beamforming in Millimeter Wave MIMO Systems |
Abstract | ||
|---|---|---|
This paper proposes a novel architecture with a framework that dynamically activates the optimal number of radio frequency (RF) chains used to implement hybrid beamforming in a millimeter wave (mmWave) multiple-input and multiple-output (MIMO) system. We use fractional programming to solve an energy efficiency maximization problem and exploit the Dinkelbach method (DM)-based framework to optimize the number of active RF chains and data streams. This solution is updated dynamically based on the current channel conditions, where the analog/digital (A/D) hybrid precoder and combiner matrices at the transmitter and the receiver, respectively, are designed using a codebook-based fast approximation solution called gradient pursuit (GP). The GP algorithm shows less run time and complexity while compared to the state-of-the-art orthogonal matching pursuit (OMP) solution. The energy and spectral efficiency performance of the proposed framework is compared with the existing state-of-the-art solutions, such as the brute force (BF), the digital beamformer, and the analog beamformer. The codebook-free approaches to design the precoders and combiners, such as alternating direction method of multipliers (ADMMs) and singular value decomposition (SVD)-based solution are also shown to be incorporated into the proposed framework to achieve better energy efficiency performance. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/TGCN.2019.2931613 | IEEE Transactions on Green Communications and Networking |
Keywords | Field | DocType |
Radio frequency,Analog-digital conversion,MIMO communication,Array signal processing,Complexity theory,Matching pursuit algorithms,Antenna arrays | Hybrid beamforming,Extremely high frequency,Mimo systems,Efficient energy use,Computer science,Electronic engineering | Journal |
Volume | Issue | Citations |
3 | 4 | 6 |
PageRank | References | Authors |
0.40 | 0 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Aryan Kaushik | 1 | 9 | 2.47 |
| J. Thompson | 2 | 3922 | 267.43 |
| Evangelos Vlachos | 3 | 61 | 11.49 |
| Christos G. Tsinos | 4 | 116 | 18.30 |
| Symeon Chatzinotas | 5 | 1849 | 192.76 |