Effect of feedback delay on downlink amplify-and-forward relaying with beamforming

Himal A. Suraweera; Theodoros A. Tsiftsis; George K. Karagiannidis; Michael Faulkner

doi:10.1109/GLOCOM.2009.5426305

Effect of feedback delay on downlink amplify-and-forward relaying with beamforming

Himal A. Suraweera, Theodoros A. Tsiftsis, George K. Karagiannidis, Michael Faulkner

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Citations (Scopus)

Abstract

In relay networks, partial channel state information at the transmitter due to feedback delay can severely degrade the beamforming performance. In this paper, the decremental effect of transmit beamforming with feedback delay on the downlink performance of a two hop Amplify-and-Forward (AF) relay network over Rayleigh fading channels is investigated. The source is equipped with multiple antennas while the relay and the destination has a single antenna. We have derived closed-form expressions for the outage probability, probability density function of the received signal-to-noise ratio (SNR) at the destination and the average bit error rate (BER). To gain further insights, outage probability and average BER approximations at high SNR are also presented. Numerical results supported by simulations are provided to illustrate the decremental effects feedback delay on the performance of the considered AF relay system.

Original language	English
Title of host publication	GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference
DOIs	https://doi.org/10.1109/GLOCOM.2009.5426305
Publication status	Published - 2009
Externally published	Yes
Event	2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States Duration: Nov 30 2009 → Dec 4 2009

Publication series

Name	GLOBECOM - IEEE Global Telecommunications Conference

Other

Other	2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
Country	United States
City	Honolulu, HI
Period	11/30/09 → 12/4/09

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/GLOCOM.2009.5426305

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Effect of feedback delay on downlink amplify-and-forward relaying with beamforming. / Suraweera, Himal A.; Tsiftsis, Theodoros A.; Karagiannidis, George K.; Faulkner, Michael.

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference. 2009. 5426305 (GLOBECOM - IEEE Global Telecommunications Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Suraweera, HA, Tsiftsis, TA, Karagiannidis, GK & Faulkner, M 2009, Effect of feedback delay on downlink amplify-and-forward relaying with beamforming. in GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference., 5426305, GLOBECOM - IEEE Global Telecommunications Conference, 2009 IEEE Global Telecommunications Conference, GLOBECOM 2009, Honolulu, HI, United States, 11/30/09. https://doi.org/10.1109/GLOCOM.2009.5426305

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