4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Cyclostationary multitone beacon signal for opportunistic spectrum access

  • @INPROCEEDINGS{10.1109/CROWNCOM.2009.5189357,
        author={Hanwen  Cao and Qipeng Cai and Joao Paulo   Miranda and Thomas Kaiser},
        title={Cyclostationary multitone beacon signal for opportunistic spectrum access},
        proceedings={4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2009},
        month={8},
        keywords={},
        doi={10.1109/CROWNCOM.2009.5189357}
    }
    
  • Hanwen Cao
    Qipeng Cai
    Joao Paulo Miranda
    Thomas Kaiser
    Year: 2009
    Cyclostationary multitone beacon signal for opportunistic spectrum access
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2009.5189357
Hanwen Cao1,*, Qipeng Cai1,*, Joao Paulo Miranda1,*, Thomas Kaiser1,*
  • 1: Institute of Communications Technology, Leibniz University of Hannover, Appelstr. 9A, 30167 Hannover, Germany.
*Contact email: hanwen.caom@ikt.uni-hannover.de, cai.qipeng@ikt.uni-hannover.de, joao.paulo.miranda@ikt.uni-hannover.de, thomas.kaiser@ikt.uni-hannover.de

Abstract

Cognitive radio is a promising solution to the problem of spectrum scarcity by means of allowing secondary radio networks access the spectrum opportunistically. One of the most important issues in cognitive radio is how to detect existing over-the-air signals reliably. Not a few literatures have reported that signals could be detected via their inherent or embedded properties. However, these may not be reliable and flexible enough for all kinds of signals with different modulation types. In this paper, we propose a multitone beacon signal carrying cyclostationary signatures, which is able to strengthen the reliability and efficiency of signal detection at low cost of spectrum overhead. This beacon not only can indicate the presence or absence of user signal but also can reveal some other information helpful to opportunistic spectrum access through the bit word modulated in its cyclostationary signatures. It could be applied to device/network identification, indication of spectrum allocation and spectrum rendezvous, both for primary and secondary users. The generation and detection algorithm of the beacon signal are presented firstly in this paper, then an initial simulation analysis and experiments with radio devices are illustrated to discuss the performance.