The Library
Hybrid beamforming for large antenna arrays with phase shifter selection
Tools
Payami, Sohail, Ghoraishi, Mir and Dianati, Mehrdad (2016) Hybrid beamforming for large antenna arrays with phase shifter selection. IEEE Transactions on Wireless Communications, 15 (11). pp. 7258-7271. doi:10.1109/TWC.2016.2599526 ISSN 1536-1276.
|
PDF
WRAP-hybrid-beamforming-large-antenna-arrays-phase-shifter-selection-Dianati-2016.pdf - Accepted Version - Requires a PDF viewer. Download (763Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/TWC.2016.2599526
Abstract
This paper proposes an asymptotically optimal hybrid beamforming solution for large antenna arrays by exploiting the properties of the singular vectors of the channel matrix. It is shown that the elements of the channel matrix with Rayleigh fading follow a normal distribution when large antenna arrays are employed. The proposed beamforming algorithm is effective in both sparse and rich propagation environments, and is applicable for both point-to-point and multiuser scenarios. In addition, a closed-form expression and a lower bound for the achievable rates are derived when analog and digital phase shifters are employed. It is shown that the performance of the hybrid beamformers using phase shifters with more than 2-bit resolution is comparable with analog phase shifting. A novel phase shifter selection scheme that reduces the power consumption at the phase shifter network is proposed when the wireless channel is modeled by Rayleigh fading. Using this selection scheme, the spectral efficiency can be increased as the power consumption in the phase shifter network reduces. Compared with the scenario that all of the phase shifters are in operation, the simulation results indicate that the spectral efficiency increases when up to 50% of phase shifters are turned OFF.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
Library of Congress Subject Headings (LCSH): | MIMO systems, Beamforming, Phase shifters, Antenna arrays | |||||||||
Journal or Publication Title: | IEEE Transactions on Wireless Communications | |||||||||
Publisher: | IEEE | |||||||||
ISSN: | 1536-1276 | |||||||||
Official Date: | November 2016 | |||||||||
Dates: |
|
|||||||||
Volume: | 15 | |||||||||
Number: | 11 | |||||||||
Page Range: | pp. 7258-7271 | |||||||||
DOI: | 10.1109/TWC.2016.2599526 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 6 November 2017 | |||||||||
Date of first compliant Open Access: | 6 November 2017 | |||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year