Computer Science – Information Theory
Scientific paper
2006-02-14
Computer Science
Information Theory
Scientific paper
In slow fading scenarios, cooperation between nodes can increase the amount of diversity for communication. We study the performance limit in such scenarios by analyzing the outage capacity of slow fading relay channels. Our focus is on the low SNR and low outage probability regime, where the adverse impact of fading is greatest but so are the potential gains from cooperation. We showed that while the standard Amplify-Forward protocol performs very poorly in this regime, a modified version we called the Bursty Amplify-Forward protocol is optimal and achieves the outage capacity of the network. Moreover, this performance can be achieved without a priori channel knowledge at the receivers. In contrast, the Decode-Forward protocol is strictly sub-optimal in this regime. Our results directly yield the outage capacity per unit energy of fading relay channels.
Avestimehr Salman
Tse David N. C.
No associations
LandOfFree
Outage Capacity of the Fading Relay Channel in the Low SNR Regime 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 Outage Capacity of the Fading Relay Channel in the Low SNR Regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outage Capacity of the Fading Relay Channel in the Low SNR Regime will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-568052