1st International ICST Workshop on Cross-layer Design in Wireless Mobile Ad hoc Networks

Research Article

The Cognitive Radio Channel: From Spectrum Sensing to Message Cribbing

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  • @INPROCEEDINGS{10.1007/978-3-642-11723-7_60,
        author={Yi Cao and Biao Chen},
        title={The Cognitive Radio Channel: From Spectrum Sensing to Message Cribbing},
        proceedings={1st International ICST Workshop on Cross-layer Design in Wireless Mobile Ad hoc Networks},
        proceedings_a={CROSS-LAYER},
        year={2012},
        month={7},
        keywords={cognitive radio channel message cribbing interference channel channel capacity},
        doi={10.1007/978-3-642-11723-7_60}
    }
    
  • Yi Cao
    Biao Chen
    Year: 2012
    The Cognitive Radio Channel: From Spectrum Sensing to Message Cribbing
    CROSS-LAYER
    Springer
    DOI: 10.1007/978-3-642-11723-7_60
Yi Cao1,*, Biao Chen1,*
  • 1: Syracuse University
*Contact email: ycao01@syr.edu, bichen@syr.edu

Abstract

Cognitive radios have been considered as an enabling technology toward resolving the spectrum scarcity through spectrum reuse facilitated by the cognitive capability of secondary users. Recent studies, however, have gone beyond spectrum sensing at the medium access control layer; it was conceived to have cognitive radios that are capable of extract information pertaining to the physical layer from the primary users to enable coexistence of multiple users. We take upon this newly proposed approach but refrain from imposing the unrealistic assumption of non-causal cooperation. Specifically, we study the so-called cognitive radio channels from the message cribbing perspective where the term ‘cognitive’ capability is strictly causal. Information theoretic performance bounds are obtained which shed lights on the impact of such causal cognitive capability.