6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Distributed Scheduling Algorithm for Cooperative Transmission with Multiple Relays

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2011.245771,
        author={Woongsup Lee and Dong-Ho Cho},
        title={Distributed Scheduling Algorithm for Cooperative Transmission with Multiple Relays},
        proceedings={6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={5},
        keywords={Cooperative transmission relay scheduling},
        doi={10.4108/icst.crowncom.2011.245771}
    }
    
  • Woongsup Lee
    Dong-Ho Cho
    Year: 2012
    Distributed Scheduling Algorithm for Cooperative Transmission with Multiple Relays
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2011.245771
Woongsup Lee1,*, Dong-Ho Cho1
  • 1: Department of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST)
*Contact email: wslee@comis.kaist.ac.kr

Abstract

Cooperative transmission can improve the performance of wireless ad-hoc systems due to its spatial multiplexing gain. Given that multiple cooperative relays which belong to the same source-destination pair can transmit simultaneously in the cooperative transmission, it is different from normal data transmission in which only one source node transmits in a single source-destination pair. Therefore, a new distributed scheduling algorithm for wireless ad-hoc systems should be devised. To this end, we propose a distributed scheduling algorithm for wireless ad-hoc systems with cooperative transmission in which multiple cooperative relays can transmit at the same time by using Amplify-and-Forward or Decode-and-Forward scheme. By using the elastic exclusive distance which is the minimum distance between two active cooperative transmission sets, the outage probability of cooperative transmissions can be greatly reduced compared to that of conventional scheduling scheme. Through performance analysis and simulation results, we show that the proposed scheme can enhance the performance of the system.