Optimum Combining in Dual-Hop AF Relaying for Maximum Spectral Efficiency in the Presence of Co-Channel Interference

Navod Suraweera, Norman C. Beaulieu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The performance of optimum combining (OC) in amplify-and-forward (AF) relaying systems in the presence of co-channel interference (CCI) is analyzed using a tight approximation for the signal-to-interference-plus-noise ratio (SINR) at the destination. Two types of relaying protocols are studied, all-relay transmission with OC and best-relay transmission with OC. When CCI is present only at the destination, both relaying protocols achieve diversity gains up to M when interferer powers are scaled with the source and the relay powers, where M is the number of relays. Best-relay transmission with OC maximizes the spectral efficiency as each communication consumes only two time slots.

Original languageEnglish
Article number7088579
Pages (from-to)2071-2080
Number of pages10
JournalIEEE Transactions on Communications
Volume63
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

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