Advanced

Multi-Switch for Antenna Selection in Massive MIMO

Gao, Xiang LU ; Edfors, Ove LU ; Tufvesson, Fredrik LU and Larsson, Erik G. (2015) IEEE Global Communication Conference (GLOBECOM), 2015 In Proc. 2015 IEEE Global Communications Conference, ISBN: 978-147995952-5
Abstract
Massive MIMO has been shown to greatly improve spectral and transmit-energy efficiency. When implementing a massive MIMO system, one challenge is high hardware complexity. A solution is to reduce the number of radio frequency (RF) transceiver chains by performing antenna selection. However, a full RF switch that connects the antennas and RF chains can be highly complex and incurs significant loss in output signal quality, especially when the number of antennas and RF chains are large. We therefore propose a simpler solution - binary switching architecture, which is sub-optimal but provides better signal quality, as compared to the full switching network. To evaluate the proposed technique, we compare the sum-rate capacity when using... (More)
Massive MIMO has been shown to greatly improve spectral and transmit-energy efficiency. When implementing a massive MIMO system, one challenge is high hardware complexity. A solution is to reduce the number of radio frequency (RF) transceiver chains by performing antenna selection. However, a full RF switch that connects the antennas and RF chains can be highly complex and incurs significant loss in output signal quality, especially when the number of antennas and RF chains are large. We therefore propose a simpler solution - binary switching architecture, which is sub-optimal but provides better signal quality, as compared to the full switching network. To evaluate the proposed technique, we compare the sum-rate capacity when using several different configurations of binary switching with the performance of the full switching. Full MIMO performance obtained without antenna selection is also presented as a reference. The investigations in this paper are all

based on measured channel data at 2.6 GHz, using a uniform linear array and a cylindrical array, both having 128 antenna elements. It is found that the proposed binary switching gives very competitive performance that are close to the full switching, for the measured channels. The results indicate a potential to simplify massive MIMO hardware by reducing the number of RF chains, and performing antenna selection with simple binary switching architecture. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Massive MIMO, multi-user MIMO, antenna selection, switching network, channel capacity, sum-rate, linear precoding, system complexity, spatial degrees of freedom, channel measurements
in
Proc. 2015 IEEE Global Communications Conference, ISBN: 978-147995952-5
pages
6 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Global Communication Conference (GLOBECOM), 2015
external identifiers
  • scopus:84964889613
language
English
LU publication?
yes
id
dc4aad22-8653-421a-b548-838b2b38efd4 (old id 7792574)
date added to LUP
2015-08-28 12:18:14
date last changed
2017-01-01 08:03:33
@inproceedings{dc4aad22-8653-421a-b548-838b2b38efd4,
  abstract     = {Massive MIMO has been shown to greatly improve spectral and transmit-energy efficiency. When implementing a massive MIMO system, one challenge is high hardware complexity. A solution is to reduce the number of radio frequency (RF) transceiver chains by performing antenna selection. However, a full RF switch that connects the antennas and RF chains can be highly complex and incurs significant loss in output signal quality, especially when the number of antennas and RF chains are large. We therefore propose a simpler solution - binary switching architecture, which is sub-optimal but provides better signal quality, as compared to the full switching network. To evaluate the proposed technique, we compare the sum-rate capacity when using several different configurations of binary switching with the performance of the full switching. Full MIMO performance obtained without antenna selection is also presented as a reference. The investigations in this paper are all<br/><br>
based on measured channel data at 2.6 GHz, using a uniform linear array and a cylindrical array, both having 128 antenna elements. It is found that the proposed binary switching gives very competitive performance that are close to the full switching, for the measured channels. The results indicate a potential to simplify massive MIMO hardware by reducing the number of RF chains, and performing antenna selection with simple binary switching architecture.},
  author       = {Gao, Xiang and Edfors, Ove and Tufvesson, Fredrik and Larsson, Erik G.},
  booktitle    = {Proc. 2015 IEEE Global Communications Conference, ISBN: 978-147995952-5},
  keyword      = {Massive MIMO,multi-user MIMO,antenna selection,switching network,channel capacity,sum-rate,linear precoding,system complexity,spatial degrees of freedom,channel measurements},
  language     = {eng},
  month        = {12},
  pages        = {6},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Multi-Switch for Antenna Selection in Massive MIMO},
  year         = {2015},
}