Buffers Improve the Performance of Relay Selection

Details Buffers Improve the Performance of Relay Selection Buffers Improve the Performance of Relay Selection

2011-03-18

arxiv.org/abs/1103.3673v1

Computer Science

Information Theory

6 pages, 6 figures

Scientific paper

We show that the performance of relay selection can be improved by employing relays with buffers. Under the idealized assumption that no buffer is full or empty, the best source-relay and the best relay-destination channels can be simultaneously exploited by selecting the corresponding relays for reception and transmission, respectively. The resulting relay selection scheme is referred to as max-max relay selection (MMRS). Since for finite buffer sizes, empty and full buffers are practically unavoidable if MMRS is employed, we propose a hybrid relay selection (HRS) scheme, which is a combination of conventional best relay selection (BRS) and MMRS. We analyze the outage probabilities of MMRS and HRS and show that both schemes achieve the same diversity gain as conventional BRS and a superior coding gain. Furthermore, our results show that for moderate buffer sizes (e.g. 30 packets) HRS closely approaches the performance of idealized MMRS and the performance gain compared to BRS approaches 3 dB as the number of relays increases.

Affiliated with

Also associated with

No associations

Rating

Buffers Improve the Performance of Relay Selection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Buffers Improve the Performance of Relay Selection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buffers Improve the Performance of Relay Selection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-185796