Amplity-and-Forward with partial relay selection

Ioannis Krikidis, John Thompson, Norbert Goertz, Stephen McLaughlin

Research output: Contribution to journalArticlepeer-review

371 Citations (Scopus)


This letter offers a statistical analysis of the basic two-hop Amplify-and-Forward link, where the relay node is selected based on instantaneous and partial knowledge of the channel. In contrast with previously reported work, where relay selection requires global knowledge (2 hops) of the relaying link, the problem considered is interesting in practical ad-hoc systems, where only neighboring (1 hop) channel information is available to the nodes. The probability density function of the received signal-to-noise ratio for the considered relaying link is approximated in closed form, and an asymptotic exponential expression is proposed to simplify performance estimation.

Original languageEnglish
Pages (from-to)235-237
Number of pages3
JournalIEEE Communications Letters
Issue number4
Publication statusPublished - 1 Apr 2008


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