Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments

Details Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments

2008-06-05

arxiv.org/abs/0806.0905v1

Computer Science

Information Theory

6 pages, 8 figures, in Proceedings of IEEE International Conference on Communications (ICC 2008), Beijing, China, May 19-23, 2

Scientific paper

Cognitive radio technology is an innovative radio design concept which aims to increase spectrum utilization by exploiting unused spectrum in dynamically changing environments. By extending previous results, we investigate the capacity gains achievable with this dynamic spectrum approach in asymmetric fading channels. More specifically, we allow the secondary-to-primary and secondary-to-secondary user channels to undergo Rayleigh or Rician fading, with arbitrary link power. In order to compute the capacity, we derive the distributions of ratios of Rayleigh and Rician variables. Compared to the symmetric fading scenario, our results indicate several interesting features of the capacity behaviour under both average and peak received power constraints. Finally, the impact of multiple primary users on the capacity under asymmetric fading has also been studied.

Affiliated with

Also associated with

No associations

Rating

Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments 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 Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channel Capacity Limits of Cognitive Radio in Asymmetric Fading Environments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-127682