Experimental investigation of antenna selection and transmit beamforming for capacity enhancement in 3×3 MIMO-enabled radio-over-fiber DAS

George S D Gordon; Michael J. Crisp; Richard V. Penty; Ian H. White

doi:10.1109/MWP.2013.6724084

Experimental investigation of antenna selection and transmit beamforming for capacity enhancement in 3×3 MIMO-enabled radio-over-fiber DAS

George S D Gordon, Michael J. Crisp, Richard V. Penty, Ian H. White

Vice Chancellor's Office

University of Cambridge

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

4 Citations (SciVal)

Abstract

This paper examines the impact of two simple precoding schemes on the capacity of 3 × 3 MIMO-enabled radio-over-fiber (RoF) distributed antenna systems (DAS) with excess transmit antennas. Specifically, phase-shift-only transmit beamforming and antenna selection are compared. It is found that for two typical indoor propagation scenarios, both strategies offer double the capacity gain that non-precoding MIMO DAS offers over traditional MIMO collocated antenna systems (CAS), with capacity improvements of 3.2-4.2 bit/s/Hz. Further, antenna selection shows similar performance to phase-only beamforming, differing by <0.5% and offering median capacities of 94 bit/s/Hz and 82 bit/s/Hz in the two propagation scenarios respectively. Because optical DASs enable precise, centralized control of remote antennas, they are well suited for implementing these beamforming schemes. Antenna selection, in particular, is a simple and effective means of increasing MIMO DAS capacity.

Original language	English
Title of host publication	2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
Publisher	IEEE
Pages	313-316
Number of pages	4
ISBN (Print)	9781467360715
DOIs	https://doi.org/10.1109/MWP.2013.6724084
Publication status	Published - 27 Jan 2014
Event	2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013 - Alexandria, VA, USA United States Duration: 28 Oct 2013 → 31 Oct 2013

Conference

Conference	2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
Country/Territory	USA United States
City	Alexandria, VA
Period	28/10/13 → 31/10/13

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

Access to Document

10.1109/MWP.2013.6724084

Cite this

Experimental investigation of antenna selection and transmit beamforming for capacity enhancement in 3×3 MIMO-enabled radio-over-fiber DAS. / Gordon, George S D; Crisp, Michael J.; Penty, Richard V. et al.
2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013. IEEE, 2014. p. 313-316 6724084.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Gordon, GSD, Crisp, MJ, Penty, RV & White, IH 2014, Experimental investigation of antenna selection and transmit beamforming for capacity enhancement in 3×3 MIMO-enabled radio-over-fiber DAS. in 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013., 6724084, IEEE, pp. 313-316, 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013, Alexandria, VA, USA United States, 28/10/13. https://doi.org/10.1109/MWP.2013.6724084

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abstract = "This paper examines the impact of two simple precoding schemes on the capacity of 3 × 3 MIMO-enabled radio-over-fiber (RoF) distributed antenna systems (DAS) with excess transmit antennas. Specifically, phase-shift-only transmit beamforming and antenna selection are compared. It is found that for two typical indoor propagation scenarios, both strategies offer double the capacity gain that non-precoding MIMO DAS offers over traditional MIMO collocated antenna systems (CAS), with capacity improvements of 3.2-4.2 bit/s/Hz. Further, antenna selection shows similar performance to phase-only beamforming, differing by <0.5% and offering median capacities of 94 bit/s/Hz and 82 bit/s/Hz in the two propagation scenarios respectively. Because optical DASs enable precise, centralized control of remote antennas, they are well suited for implementing these beamforming schemes. Antenna selection, in particular, is a simple and effective means of increasing MIMO DAS capacity.",

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Experimental investigation of antenna selection and transmit beamforming for capacity enhancement in 3×3 MIMO-enabled radio-over-fiber DAS

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