An approximation of the average BER performance of multi-hop AF relaying systems with fixed gain

Junkyoung Lee, Seunghun Jang, Janghoon Yang, Dongku Kim

Research output: Contribution to journalArticle

Abstract

In this letter, we present a closed-form bound of the average bit error rate (BER) performance for the multi-hop amplify-andforward (AF) relaying systems with fixed gain in Rayleigh fading channel. The proposed bound is derived from the probability density function (PDF) of the overall multi-hop relay channel under the assumption of asymptotic high signal-to-noise ratio (SNR) at every intermediate relays. When intermediate relays actually operate at finite SNR, the proposed BER bound becomes looser as the SNR of the last hop increases. In order to reflect the effect of all the noise variances of relay links to the BER evaluation, a hopindexed recursive BER approximation is proposed, in which the proposed bound of BER under asymptotic high SNR is used. The simulation results manifest that the proposed hop-indexed recursive BER approximation can not only guarantee accuracy regardless of the SNR of the last hop but also provide higher accuracy than the previous works.

Original languageEnglish
Pages (from-to)3280-3284
Number of pages5
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number10
DOIs
Publication statusPublished - 2009 Oct

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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