7th International Conference on Cognitive Radio Oriented Wireless Networks

Research Article

Minimizing Symbol Error Rate for Cognitive Relaying with Opportunistic Access

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2012.248456,
        author={Ammar Zafar and Mohamed-Slim Alouini and Yunfei Chen and Redha Radaydeh},
        title={Minimizing Symbol Error Rate for Cognitive Relaying with Opportunistic Access},
        proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={7},
        keywords={cognitive relays opportunistic access optimal resource allocation symbol error rate},
        doi={10.4108/icst.crowncom.2012.248456}
    }
    
  • Ammar Zafar
    Mohamed-Slim Alouini
    Yunfei Chen
    Redha Radaydeh
    Year: 2012
    Minimizing Symbol Error Rate for Cognitive Relaying with Opportunistic Access
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2012.248456
Ammar Zafar1,*, Mohamed-Slim Alouini1, Yunfei Chen2, Redha Radaydeh1
  • 1: King Abdullah University of Science and Technology (KAUST)
  • 2: University of Warwick
*Contact email: ammar.zafar@kaust.edu.sa

Abstract

In this paper, we present an optimal resource allocation scheme (ORA) for an all-participate (AP) cognitive relay network that minimizes the symbol error rate (SER). The SER is derived and different constraints are considered on the system. We consider the cases of both individual and global power constraints, individual constraints only and global constraints only. Numerical results show that the ORA scheme outperforms the schemes with direct link only and uniform power allocation (UPA) in terms of minimizing the SER for all three cases of different constraints. Numerical results also show that the individual constraints only case provides the best performance at large signal-to-noise-ratio (SNR).