Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas

Zhiyang Liu; Lin Dai

doi:10.1109/PIMRC.2013.6666337

Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas

Zhiyang Liu, Lin Dai

Department of Electrical Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

2 Citations (Scopus)

Abstract

Despite the common belief that substantial capacity gains can be achieved by employing a large number of antennas at the base-station (BS) side in cellular networks, the effect of BS antenna topology on the capacity scaling behavior is little understood. This paper presents a comparative study on the asymptotic capacity of a downlink single-user multiple-input-multiple-output (MIMO) system with multiple BS antennas which are either co-located or grouped into uniformly distributed clusters. The analysis reveals that when the ratio L of the number of BS antennas to the number of user antennas is large, the average per-antenna capacities in both cases logarithmically increase with L, but in the orders of log₂ L and α/2 log₂ L for the co-located and distributed antenna layouts, respectively, where α>2 denotes the path-loss factor. A higher capacity is achieved by distributing the BS antennas thanks to the reduction of the minimum access distance. © 2013 IEEE.

Original language	English
Title of host publication	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Pages	1286-1290
DOIs	https://doi.org/10.1109/PIMRC.2013.6666337
Publication status	Published - 2013
Event	2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 - London, United Kingdom Duration: 8 Sept 2013 → 11 Sept 2013

Conference

Conference	2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013
Country/Territory	United Kingdom
City	London
Period	8/09/13 → 11/09/13

Research Keywords

Asymptotic capacity
Co-located antennas
Distributed antennas
Multiple-input-multiple-output (MIMO)

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10.1109/PIMRC.2013.6666337

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title = "Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas",

abstract = "Despite the common belief that substantial capacity gains can be achieved by employing a large number of antennas at the base-station (BS) side in cellular networks, the effect of BS antenna topology on the capacity scaling behavior is little understood. This paper presents a comparative study on the asymptotic capacity of a downlink single-user multiple-input-multiple-output (MIMO) system with multiple BS antennas which are either co-located or grouped into uniformly distributed clusters. The analysis reveals that when the ratio L of the number of BS antennas to the number of user antennas is large, the average per-antenna capacities in both cases logarithmically increase with L, but in the orders of log2 L and α/2 log2 L for the co-located and distributed antenna layouts, respectively, where α>2 denotes the path-loss factor. A higher capacity is achieved by distributing the BS antennas thanks to the reduction of the minimum access distance. {\textcopyright} 2013 IEEE.",

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note = "2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 ; Conference date: 08-09-2013 Through 11-09-2013",

}

Liu, Z & Dai, L 2013, Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas. in IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC., 6666337, pp. 1286-1290, 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013, London, United Kingdom, 8/09/13. https://doi.org/10.1109/PIMRC.2013.6666337

Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas. / Liu, Zhiyang; Dai, Lin.
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2013. p. 1286-1290 6666337.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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AU - Liu, Zhiyang

AU - Dai, Lin

PY - 2013

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N2 - Despite the common belief that substantial capacity gains can be achieved by employing a large number of antennas at the base-station (BS) side in cellular networks, the effect of BS antenna topology on the capacity scaling behavior is little understood. This paper presents a comparative study on the asymptotic capacity of a downlink single-user multiple-input-multiple-output (MIMO) system with multiple BS antennas which are either co-located or grouped into uniformly distributed clusters. The analysis reveals that when the ratio L of the number of BS antennas to the number of user antennas is large, the average per-antenna capacities in both cases logarithmically increase with L, but in the orders of log2 L and α/2 log2 L for the co-located and distributed antenna layouts, respectively, where α>2 denotes the path-loss factor. A higher capacity is achieved by distributing the BS antennas thanks to the reduction of the minimum access distance. © 2013 IEEE.

AB - Despite the common belief that substantial capacity gains can be achieved by employing a large number of antennas at the base-station (BS) side in cellular networks, the effect of BS antenna topology on the capacity scaling behavior is little understood. This paper presents a comparative study on the asymptotic capacity of a downlink single-user multiple-input-multiple-output (MIMO) system with multiple BS antennas which are either co-located or grouped into uniformly distributed clusters. The analysis reveals that when the ratio L of the number of BS antennas to the number of user antennas is large, the average per-antenna capacities in both cases logarithmically increase with L, but in the orders of log2 L and α/2 log2 L for the co-located and distributed antenna layouts, respectively, where α>2 denotes the path-loss factor. A higher capacity is achieved by distributing the BS antennas thanks to the reduction of the minimum access distance. © 2013 IEEE.

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KW - Multiple-input-multiple-output (MIMO)

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Asymptotic capacity analysis of downlink MIMO systems with co-located and distributed antennas

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