Constant envelope orthogonal frequency division multiplexing (CE-OFDM) has been extensively studied due to its ability to achieve low peak-to-average power ratio (PAPR) waveforms. However, CE-OFDM may encounter the phase ambiguity problem when the modulation index is relatively large. To mitigate this issue, we incorporate companding technique into CE-OFDM successfully enhance the overall system performance. Moreover, companding scheme requires a balanced consideration between the degree of signal compression and phase ambiguity problem. Therefore, this paper derives the optimal parameter selection by analysing the signal-to-interference-plus-noise ratio (SINR) of the scheme. Simulation results demonstrate that the proposed approach enhances the performance of CE-OFDM effectively by reducing the phase ambiguity as well as minimizing the interference caused by the companding technique.


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    Title :

    Companding Transform Assisted Constant Envelope OFDM


    Contributors:
    Huang, Chongda (author) / Dan, Lilin (author) / Xiao, Yue (author)


    Publication date :

    2023-06-01


    Size :

    1364188 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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