Deakin University
Browse

Active subchannel detection for non-contiguous OFDM-based cognitive radio systems

Version 2 2024-06-12, 15:13
Version 1 2020-09-16, 15:58
conference contribution
posted on 2010-12-01, 00:00 authored by Jie Ding, D Qu, X J Sun, T Jiang, L Liu
For non-contiguous OFDM (NC-OFDM) based cognitive radio (CR) systems, one of huge challenges is to establish spectrum synchronization before data transmissions. In this paper, we propose a novel active subchannel detection scheme for the NC-OFDM receiver without out-of-band spectrum synchronization information. The key idea of the proposed scheme is to employ the received training symbol to calculate the a posterior probability (APP) of each subchannel being active, and then APPs are used to make a decision on which subchannels are active and to be processed in data detection. Furthermore, performance analysis of active subchannel detection is given. Both theoretical analysis and simulation results show that the proposed scheme can provide satisfactory performance of the symbol error rate (SER) when the interference from primary users is considered. ©2010 IEEE.

History

ISBN-13

9781424456383

Publication classification

E1.1 Full written paper - refereed

Title of proceedings

GLOBECOM - IEEE Global Telecommunications Conference

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC