In this work, the continuous phase modulation (CPM) with short block lengths (up to 128 symbols) is considered as a waveform, which is used e.g. in tactical networks. In order to deploy an optimal coherent detector, among other parameters as e.g. carrier phase or symbol timing, the carrier frequency has to be estimated. It is proposed to use the expectation maximization algorithm (EM) for a maximum likelihood estimation. It is pointed out why finding a suitable starting value, so that the EM does not converge to a local maximum of the likelihood function, is non-trivial in this case. Based on the insights given on the likelihood function in this case, an algorithm to tackle that issue and to ensure convergence to the global maximum is formulated. The algorithm’s performance is evaluated in terms of estimation error variance, including a comparison to the theoretical limit, and in terms of bit error rate, where it is compared to the perfectly synchronized receiver. The algorithm’s robustness against unknown carrier phase is investigated and its computational complexity is reflected.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Carrier Frequency Offset Estimation in Burst-Type CPM via the EM Algorithm


    Beteiligte:
    Lang, Andreas (Autor:in) / Lankl, Berthold (Autor:in)


    Erscheinungsdatum :

    2020-05-01


    Format / Umfang :

    180443 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Carrier Frequency Offset Estimation for CO-OFDM: The Matched-Filter Approach

    Du, X. / Song, T. / Kam, P. | British Library Online Contents | 2018


    On Decision Aided Carrier Phase and Frequency Offset Estimation in Coherent Optical Receivers

    Meiyappan, A. / Kam, P.-Y. / Kim, H. | British Library Online Contents | 2013


    Adaptive DC-Offset compensation algorithm for burst mode operated direct conversion receivers

    Sampei,S. / Feher,K. / Ministry of Posts and Telec.,Comm.Res.Lab.,JP et al. | Kraftfahrwesen | 1992


    Optimization of binary FSK system with carrier frequency offset

    Yamamoto, B / Oyake, J. / Hayashy, A.O et al. | Tema Archiv | 1978