7th International Conference on Cognitive Radio Oriented Wireless Networks

Research Article

Achievable Transmission Capacity of Cognitive Radio Networks with Cooperative Relaying

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2012.248588,
        author={Xiuying Chen and Tao Jing and Yan Huo and Wei Li and Xiuzhen Cheng and Tao Chen},
        title={Achievable Transmission Capacity of Cognitive Radio Networks with Cooperative Relaying},
        proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={7},
        keywords={achievable transmission capacity cognitive radio networks cooperative relay outage probability},
        doi={10.4108/icst.crowncom.2012.248588}
    }
    
  • Xiuying Chen
    Tao Jing
    Yan Huo
    Wei Li
    Xiuzhen Cheng
    Tao Chen
    Year: 2012
    Achievable Transmission Capacity of Cognitive Radio Networks with Cooperative Relaying
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2012.248588
Xiuying Chen1, Tao Jing1,*, Yan Huo1, Wei Li2, Xiuzhen Cheng2, Tao Chen3
  • 1: School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing, China
  • 2: The George Washington University
  • 3: VTT - Technical Research Centre of Finland
*Contact email: tjing@bjtu.edu.cn

Abstract

Previous research on cognitive networks argues that secondary users can only work under a low transmission power condition in an underlay spectrum sharing model. Motivated by the idea of cooperative communications, in this paper we investigate the achievable transmission capacity of a cognitive network that provides cooperative relaying to the primary network over the underlay spectrum sharing model. The feasible region of the relay, the lower bound of the power ratio between the primary network and the secondary network with or without cooperative relaying, as well as the maximum achievable transmission capacity of the secondary network with or without relaying under the outage constraints from both the primary and the secondary network, are carefully studied. Numerical results indicate that secondary users can achieve a higher transmission capacity with cooperative relaying as they can transmit at a higher power while satisfying the outage probability constraints from both systems.