Index modulation (IM) has been developed as an energy-efficient transmission scheme for applications where high data rate is required with a limited energy budget. Meanwhile, multiple input multiple output (MIMO) and orthogonal frequency division multiplexing (OFDM) have been proved to be promising for the physical layer of wireless systems. Therefore, the concept of combining these three schemes to take all the advantages is emerging and the resulted systems are umbrellaed under the name of space-frequency index modulation (SFIM) systems. However, peak-to-average power ratio (PAPR) poses a challenge for SFIM due to the use of OFDM structure. Clipping is a low-complexity and effective measure to reduce the PAPR, however, it introduces distortions that degrade the system error performance. To address this issue, a hard-decision based cancellation method is proposed for the clipped SFIM system in this paper, which shows significant performance gains by effectively estimating the clipping noise and canceling it from the received signals.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Signal Restoration for Clipped Space-Frequency Index Modulation Systems


    Contributors:
    Cao, Rui (author) / Lei, Xia (author) / Xiao, Yue (author)


    Publication date :

    2020-05-01


    Size :

    123797 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Iterative Receiver for Hybrid Asymmetrically Clipped Optical OFDM

    Qi, W. / Zhaocheng, W. / Linglong, D. | British Library Online Contents | 2014



    Asymmetrically Clipped Absolute Value Optical OFDM for Intensity-Modulated Direct-Detection Systems

    Bai, R. / Wang, Q. / Wang, Z. | British Library Online Contents | 2017