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Partial cognitive relay channel

Nilchian, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/ITWNIT.2009.5158599
  3. Abstract:
  4. We define partial cognitive relay channel as a twotransmitter, two-receiver interference channel with a relay node such that one of the transmitters is a cognitive transmitter. As a more feasible assumption we assume that the cognitive transmitter has non-causally access to a part of the other transmitter's encoded message. The cognitive radio transmitter transmits simultaneously over the same channel instead of waiting for an idle channel which is traditional for a cognitive radio. We calculate the achievable rate region for partial cognitive relay channel based on the combination of partial decode-compress and forward for the relay, rate-splitting and Gel'fand and Pinsker coding. Numerical evaluation of the region in the practical Gaussian case is performed. We show that by defining a proper cooperation strategy among the transmitters, equipping some of them with the cognition capability and exploiting the relay nodes, the effective bandwidth of each transmitter will enhance greatly
  5. Keywords:
  6. Achievable rate region ; Co-operation strategy ; Cognitive radio ; Compress and forward ; Effective bandwidth ; Gaussians ; Idle channel ; Interference channels ; Numerical evaluations ; Relay channels ; Relay node ; Information theory ; Radio ; Technical presentations ; Transmitters ; Radio broadcasting
  7. Source: 2009 IEEE Information Theory Workshop on Networking and Information Theory, 10 June 2009 through 12 June 2009 ; 2009 , Pages 341-345 ; 9781424445363 (ISBN)
  8. URL: http://ieeexplore.ieee.org/document/5158599