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

Research Article

Deepen spectrum notch of CR signals with Partial Response System

  • @INPROCEEDINGS{10.1109/CROWNCOM.2009.5188965,
        author={Bing  Liang and Luyong Zhang and Zheng  Zhou},
        title={Deepen spectrum notch of CR signals with Partial Response System},
        proceedings={4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2009},
        month={8},
        keywords={Partial Response System; Cognitive Radio; OFDM;  Spectrum notch},
        doi={10.1109/CROWNCOM.2009.5188965}
    }
    
  • Bing Liang
    Luyong Zhang
    Zheng Zhou
    Year: 2009
    Deepen spectrum notch of CR signals with Partial Response System
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2009.5188965
Bing Liang1,*, Luyong Zhang1, Zheng Zhou1
  • 1: Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Beijing 100876, China
*Contact email: bingbupt@gmail.com

Abstract

Partial response system (PRS) is introduced to OFDM technology to deepen spectrum notch when some subcarriers are turned off. By this, controllable interference which can be removed in the receiver without enhancing system complexity, is introduced to the cognitive radio (CR) signals. It can change spectrum shape of subcarriers of OFDM signals and deepen the spectrum notch when turning off some subcarriers. Therefore, this method can lower the interference between primary users and secondary ones in CR systems. Some simulation results are shown in this paper to approve the performance of this method.