The need for higher data rates in wireless communications has resulted in a significant effort in what regards to the design of transmission techniques and waveforms. This design can be very challenging thanks to the strong trade-off between the spectral efficiency and the energy efficiency, which comes from the fact that spectral-efficient waveforms usually presents a very large peak-to-average power ratio (PAPR), requiring a linear amplification for preserving the linearity of the transmitted signals. Nevertheless, obtaining spectral- and energy-efficient wireless communications will undoubtedly be one of the main challenges of both 5G and beyond 5G (B5G) systems. In this work, we propose a new amplification scheme named quantized digital amplification (QDA). The QDA is based on the decomposition of a high-PAPR signal into constant-envelope components and allows to obtain very high energy efficiencies, being suitable for spectrally-efficient transmission techniques such as orthogonal frequency-division multiplexing (OFDM). By presenting a set of results of the QDA’s prototype, we demonstrate that it is possible to obtain amplification efficiencies way above the ones of the state-of-the art amplification schemes, while preserving the linearity of the transmitted signals. 1


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Highly-Efficient Amplification Scheme for OFDM Signals


    Contributors:


    Publication date :

    2021-04-01


    Size :

    3951242 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Highly Efficient OFDM Applying Symbol-Edges Truncating Transmission Technique

    Ichikawa, Yuu / Mizutani, Keiichi / Harada, Hiroshi | IEEE | 2022


    Highly efficient TIBWB-OFDM waveform for broadband wireless communications

    Conceicao, Filipe / Gomes, Marco / Silva, Vitor et al. | IEEE | 2020


    Optimization of Impulsive Noise Mitigation Scheme for PAPR Reduced OFDM Signals over Powerline Channels

    Anoh, Kelvin / Adebisi, Bamidele / Rabie, Khaled M. et al. | IEEE | 2018


    An Efficient Channel Estimation Scheme for Realistic SFBC MISO OFDM Systems

    Marousis, A. D. / Constantinou, P. / European Space Agency | British Library Conference Proceedings | 2006


    Highly Efficient DSP-Guided Power Amplifier (PA) for Wireless OFDM Applications

    Nisar, Mudassar / Ginart, Antonio / Barlas, Irtaza et al. | AIAA | 2010