Title

Capacity Region And Optimum Power Allocation Strategies For Fading Cognitive Relay Multiple Access Channels

Abstract

We consider a fading Gaussian cognitive relay multiple-access channel (CR-MAC), consisting of K sources and an active cognitive relay that wish to simultaneously communicate with a single destination. We assume that the relay has its own message to communicate and is aware of the messages of the other K sources non-causally. Furthermore, the message of the relay and the messages of the other K sources are independent. Assuming that all the sources, the cognitive relay and the destination are aware of the instantaneous channel state information (CSI) we characterize the ergodic capacity region. For the case where the cognitive relay does not have its own message to transmit, we derive the optimal power allocation strategies that achieve any arbitrary point on the boundary surface of the capacity region. © 2012 IEEE.

Publication Date

12-1-2012

Publication Title

2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012

Number of Pages

988-995

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/Allerton.2012.6483326

Socpus ID

84875741654 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84875741654

This document is currently not available here.

Share

COinS