Outage Capacity of Bursty Amplify-and-Forward with Incremental Relaying

Details Outage Capacity of Bursty Amplify-and-Forward with Incremental Relaying Outage Capacity of Bursty Amplify-and-Forward with Incremental Relaying

2010-01-13

arxiv.org/abs/1001.2112v1

Computer Science

Information Theory

5 pages, 3 figures, submitted to IEEE International Symposium on Information Theory, Austin, TX, June 13-18, 2010

Scientific paper

We derive the outage capacity of a bursty version of the amplify-and-forward (BAF) protocol for small signal-to-noise ratios when incremental relaying is used. We show that the ratio between the outage capacities of BAF and the cut-set bound is independent of the relay position and that BAF is outage optimal for certain conditions on the target rate R. This is in contrast to decode-and-forward with incremental relaying, where the relay location strongly determines the performance of the cooperative protocol. We further derive the outage capacity for a network consisting of an arbitrary number of relay nodes. In this case the relays transmit in subsequent partitions of the overall transmission block and the destination accumulates signal-to-noise ratio until it is able to decode.

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