In practical orthogonal frequency division multi-plexing systems and standards, preamble waveforms are adopted to facilitate initial timing and frequency synchronization. These preamble waveforms are constructed from properly designed preamble sequences which possess exact or near zero periodic autocorrelation (ZAC) property to achieve robust synchronization and consist of exact or near constant amplitude (CA) symbols to achieve low waveform peak-to-average power ratio (PAPR). Unfortunately, preamble waveforms carrying conventional CAZAC sequences (which have ZAC property and consist of CA symbols) or near-CAZAC sequences result in large power spectral sidelobes and thus are not spectrally compact. In this paper, new near-CAZAC sequences are designed to construct spectrally compact OFDM preamble waveforms with robust timing and frequency synchronization and very low waveform PAPR comparable to those constructed from the conventional CAZAC sequences.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Near-CAZAC Preamble Sequences for Initial Synchronization in Spectrally Compact OFDM


    Contributors:


    Publication date :

    2018-08-01


    Size :

    298503 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Dispersion-Tolerant DDO-OFDM System and Simplified Adaptive Modulation Scheme Using CAZAC Precoding

    Feng, Z. / Wu, Q. / Tang, M. et al. | British Library Online Contents | 2016



    A Novel Preamble Design for Time Synchronization in OFDM-Based Multiple Numerologies

    Lee, Hakkeon / Kim, Hyunsoo / Lim, Sungmook et al. | IEEE | 2018


    GLRT-Based Preamble Sequence Detection in OFDM

    Tsai, Chieh-Ju / Chen, Wei-Chang / Hung, Fu-Chuan et al. | IEEE | 2021


    Sparse Preamble Design for Polarization Division Multiplexed CO-OFDM/OQAM Channel Estimation

    Nhan, N. Q. / Morel, P. / Azou, S. et al. | British Library Online Contents | 2018