Low-complexity cyclostationarity feature detection scheme of localized SC-FDMA uplink system for application to detect and avoid

Wensheng Zhang, Yukitoshi Sanada

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    This paper proposes a low-complexity cyclostationarity feature detection scheme for detect and avoid (DAA) of Ultra-Wideband (UWB) system in order to solve the coexistence issues between UWB system and Long Term Evolution-Advanced (LTE-Advanced) system. The proposed scheme is suitable for the detection of a localized Single-carrier Frequency Division Multiple Access (SC-FDMA) signal utilized in the uplink of LTEAdvanced system. Compared with conventional cyclostationarity feature detection, the proposed scheme utilizes all possible cyclic-spectrums located in a distributed window function, which is decided by the frequency distribution of the Primary User (PU) signal. The computational complexity of the proposed scheme is low, due to only one window width instead of all occupied spectrum interval will be searched for the possible cyclic-spectrums. On the other hand, the proposed scheme can also avoid the estimation of the cyclic-spectrums when the type of PU signal is unclear or the cyclic-spectrums are hard to estimate. Simulation results indicate that the proposed scheme can make a tradeoff between detection performance and computational complexity. The low-complexity cyclostationarity feature detection also provides a substitute for the energy detection when the later approach suffers from the noise uncertainty and cannot distinguish the target signal type.

    Original languageEnglish
    Pages (from-to)307-319
    Number of pages13
    JournalWireless Personal Communications
    Volume66
    Issue number2
    DOIs
    Publication statusPublished - 2012 Sep 1

    Keywords

    • Cyclostationarity feature detection
    • DAA
    • SC-FDMA

    ASJC Scopus subject areas

    • Computer Science Applications
    • Electrical and Electronic Engineering

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