2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Spectrum pool reassignment for a cognitive OFDM-based relay system

  • @INPROCEEDINGS{10.1109/CROWNCOM.2007.4549778,
        author={Ashish Pandharipande and Chin  Keong Ho},
        title={Spectrum pool reassignment for a cognitive OFDM-based relay system},
        proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2008},
        month={6},
        keywords={Communications technology  Decoding  Electrostatic precipitators  Europe  Explosives  Interference  OFDM  Relays  Shadow mapping  Wireless communication},
        doi={10.1109/CROWNCOM.2007.4549778}
    }
    
  • Ashish Pandharipande
    Chin Keong Ho
    Year: 2008
    Spectrum pool reassignment for a cognitive OFDM-based relay system
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2007.4549778
Ashish Pandharipande1,*, Chin Keong Ho1,2
  • 1: Philips Research Europe - Eindhoven, High Tech Campus, 5656 AE Eindhoven, The Netherlands
  • 2: Department of Electrical Engineering, Eindhoven University of Technology, The Netherlands
*Contact email: ashish.p@philips.com

Abstract

We consider a cognitive OFDM-based spectrum pooling wireless system where a source node desires to transmit data to a distant destination node with the assistance of a relay node. Communication between any transmitter-receiver pair occurs on a pool of OFDM subcarriers corresponding to spectrum found to be empty of primary users. In such a system, the source node uses a certain pool of subcarrier frequencies to transmit data to the relay. The relay then reassigns and forwards the received data on a possibly different pool of OFDM subcarriers, which is then decoded at the destination node. Our goal is to maximize the capacity of this spectrum pooling relay system. This is done by determining an optimum assignment of the subcarrier pools available between the source-relay and relay-destination.