A Moment Matching Technique to Estimate the Achievable Ergodic Rate for Limited Feedback Distributed Antenna Systems in the Presence of Out-of-Cell Interference

Author

Hemachandra, Kasun T. ; Beaulieu, Norman C.

Author_Institution

iCORE Wireless Commun. Lab., Univ. of Alberta, Edmonton, AB, Canada

Volume

17

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

1360

Lastpage

1363

Abstract

The performance of a random vector quantization based transmit precoding distributed antenna system is investigated in terms of the achievable ergodic rate. An approximate expression is derived for the ergodic rate of the system considering the effects of path loss, Rayleigh fading and out-of-cell interference. A moment matching technique is used to approximate the desired signal power and the total interference power distributions of the system using a Gamma distribution. The proposed approximation estimates the performance of the system accurately and saves computational time in simulations.

Keywords

Rayleigh channels; antennas; gamma distribution; precoding; Gamma distribution; Rayleigh fading; computational time; ergodic rate; limited feedback distributed antenna system; moment matching technique; out of cell interference; random vector quantization based transmit precoding distributed antenna system; total interference power distribution; Antenna arrays; Antenna feeds; Approximation methods; Interference; Vectors; Wireless communication; Distributed antenna systems; ergodic rate; limited feedback; random vector quantization;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.052413.130298

Filename

6522952