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 proceedingConference 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 languageEnglish
Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States
Duration: Nov 30 2009Dec 4 2009

Other

Other2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
CountryUnited States
CityHonolulu, HI
Period11/30/0912/4/09

Fingerprint

Beamforming
Feedback
Outages
Bit error rate
Signal to noise ratio
Antennas
Telecommunication repeaters
Channel state information
Rayleigh fading
Fading channels
Probability density function
Transmitters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Suraweera, H. A., Tsiftsis, T. A., Karagiannidis, G. K., & Faulkner, M. (2009). Effect of feedback delay on downlink amplify-and-forward relaying with beamforming. In GLOBECOM - IEEE Global Telecommunications Conference [5426305] https://doi.org/10.1109/GLOCOM.2009.5426305

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

GLOBECOM - IEEE Global Telecommunications Conference. 2009. 5426305.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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