Impact of the angular spread and antenna spacing on the capacity of correlated MIMO fading channels

Mohammed Abdo Saeed, Borhanuddin Mohd Ali, Sabira Khatun, Mahamod Ismail

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It has been shown that the capacity of a multiple-input multiple-output system increases linearly with the number of antennas, provided that the environment is rich scattering. However, this increase in the capacity is substantially degraded if the multiple input multiple output channels are correlated. In this paper, the capacity of correlated multiple input multiple output fading channel is investigated for laplacian and uniform angular energy distributions that implicitly represent two different scatterer distributions. The effect of the spatial correlation of a uniform circular antenna array is considered. Optimal power allocation is implemented to maximize the capacity. Through extensive Monte Carlo simulations, the results show that multiple input multiple output channel capacity is a function of the angle spread and antenna spacing. These two parameters play a major role in dictating the spatial correlation which in turn affects on the capacity. Large angle spread leads to lower correlation between the antenna elements and consequently higher capacity. The degradation in the capacity can be reduced by increasing the spacing between the antenna elements.

Original languageEnglish
Pages (from-to)60-66
Number of pages7
JournalInternational Arab Journal of Information Technology
Volume6
Issue number1
Publication statusPublished - 2009

Fingerprint

MIMO systems
Fading channels
Antennas
Channel capacity
Antenna arrays
Scattering
Degradation

Keywords

  • Capacity
  • Correlation
  • MIMO systems
  • Scattering distributions

ASJC Scopus subject areas

  • Computer Science(all)

Cite this

Impact of the angular spread and antenna spacing on the capacity of correlated MIMO fading channels. / Saeed, Mohammed Abdo; Ali, Borhanuddin Mohd; Khatun, Sabira; Ismail, Mahamod.

In: International Arab Journal of Information Technology, Vol. 6, No. 1, 2009, p. 60-66.

Research output: Contribution to journalArticle

@article{71aace472fbc4a16b4b174ff8b6acf6d,
title = "Impact of the angular spread and antenna spacing on the capacity of correlated MIMO fading channels",
abstract = "It has been shown that the capacity of a multiple-input multiple-output system increases linearly with the number of antennas, provided that the environment is rich scattering. However, this increase in the capacity is substantially degraded if the multiple input multiple output channels are correlated. In this paper, the capacity of correlated multiple input multiple output fading channel is investigated for laplacian and uniform angular energy distributions that implicitly represent two different scatterer distributions. The effect of the spatial correlation of a uniform circular antenna array is considered. Optimal power allocation is implemented to maximize the capacity. Through extensive Monte Carlo simulations, the results show that multiple input multiple output channel capacity is a function of the angle spread and antenna spacing. These two parameters play a major role in dictating the spatial correlation which in turn affects on the capacity. Large angle spread leads to lower correlation between the antenna elements and consequently higher capacity. The degradation in the capacity can be reduced by increasing the spacing between the antenna elements.",
keywords = "Capacity, Correlation, MIMO systems, Scattering distributions",
author = "Saeed, {Mohammed Abdo} and Ali, {Borhanuddin Mohd} and Sabira Khatun and Mahamod Ismail",
year = "2009",
language = "English",
volume = "6",
pages = "60--66",
journal = "International Arab Journal of Information Technology",
issn = "1683-3198",
publisher = "Zarqa University",
number = "1",

}

TY - JOUR

T1 - Impact of the angular spread and antenna spacing on the capacity of correlated MIMO fading channels

AU - Saeed, Mohammed Abdo

AU - Ali, Borhanuddin Mohd

AU - Khatun, Sabira

AU - Ismail, Mahamod

PY - 2009

Y1 - 2009

N2 - It has been shown that the capacity of a multiple-input multiple-output system increases linearly with the number of antennas, provided that the environment is rich scattering. However, this increase in the capacity is substantially degraded if the multiple input multiple output channels are correlated. In this paper, the capacity of correlated multiple input multiple output fading channel is investigated for laplacian and uniform angular energy distributions that implicitly represent two different scatterer distributions. The effect of the spatial correlation of a uniform circular antenna array is considered. Optimal power allocation is implemented to maximize the capacity. Through extensive Monte Carlo simulations, the results show that multiple input multiple output channel capacity is a function of the angle spread and antenna spacing. These two parameters play a major role in dictating the spatial correlation which in turn affects on the capacity. Large angle spread leads to lower correlation between the antenna elements and consequently higher capacity. The degradation in the capacity can be reduced by increasing the spacing between the antenna elements.

AB - It has been shown that the capacity of a multiple-input multiple-output system increases linearly with the number of antennas, provided that the environment is rich scattering. However, this increase in the capacity is substantially degraded if the multiple input multiple output channels are correlated. In this paper, the capacity of correlated multiple input multiple output fading channel is investigated for laplacian and uniform angular energy distributions that implicitly represent two different scatterer distributions. The effect of the spatial correlation of a uniform circular antenna array is considered. Optimal power allocation is implemented to maximize the capacity. Through extensive Monte Carlo simulations, the results show that multiple input multiple output channel capacity is a function of the angle spread and antenna spacing. These two parameters play a major role in dictating the spatial correlation which in turn affects on the capacity. Large angle spread leads to lower correlation between the antenna elements and consequently higher capacity. The degradation in the capacity can be reduced by increasing the spacing between the antenna elements.

KW - Capacity

KW - Correlation

KW - MIMO systems

KW - Scattering distributions

UR - http://www.scopus.com/inward/record.url?scp=73449102123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73449102123&partnerID=8YFLogxK

M3 - Article

VL - 6

SP - 60

EP - 66

JO - International Arab Journal of Information Technology

JF - International Arab Journal of Information Technology

SN - 1683-3198

IS - 1

ER -