Cooperative relay cognitive interference channel

Kazemi, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1109/ICITIS.2010.5689734
  3. Publisher: 2010
  4. Abstract:
  5. The cooperative relay cognitive interference channel (RCIC) is a four-node network with two source nodes (primary source and cognitive source) and two destination nodes, in which sources try to communicate at certain rates with their corresponding destinations simultaneously through a common medium and each destination can act as a relay to assist the other one. For the partially cooperative RCIC (PC-RCIC), in which only one of the destinations (corresponding to the cognitive source) acts as a relay, we derive an achievable rate region based on using rate splitting and superposition coding at the cognitive source, and using decode-and-forward scheme at the relay. For the degraded PC-RCIC, we characterize the capacity region. We also investigate the Gaussian PC-RCIC in details. In this case, we present the achievability and converse arguments for a class of degraded Gaussian PC-RCIC and determine the capacity region of this class. Obtained results offer the cooperative relaying as an effective strategy for improving the capacity region of the cognitive interference channels (CICs)
  6. Keywords:
  7. Capacity region ; Capacity regions ; Degraded channel ; Gaussian channel ; Rate region ; User cooperation ; Wireless downlink ; Communication channels (information theory) ; Gaussian distribution ; Transmitters ; Security of data
  8. Source: Proceedings 2010 IEEE International Conference on Information Theory and Information Security, ICITIS 2010, 17 December 2010 through 19 December 2010, Beijing ; 2010 , Pages 1064-1069 ; 9781424469406 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/5689734