Iterative compensation for clipping noise in spatial modulation OFDM systems

Zhao, Yan, Xiao, Yue, Yang, Ping, Fang, Shu, and Xiang, Wei (2019) Iterative compensation for clipping noise in spatial modulation OFDM systems. IEEE Transactions on Vehicular Technology, 68 (12). pp. 12422-12426.

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DOI: 10.1109/TVT.2019.2947193

View at Publisher Website: https://doi.org/10.1109/TVT.2019.2947193

Abstract

Clipping is an effective technique to adjust the peak-to-average power ratio (PAPR) of spatial modulation (SM) orthogonal frequency-division multiplexing (OFDM) systems. In this paper, an iterative soft compensation method is proposed for mitigating the effect of the clipping noise. In the proposed method, the sparsity and relativity of all transmit antennas are exploited, and the mean and power of the clipping noise are estimated based on the a priori information. Furthermore, the attenuation factor in each iteration is updated to yield a more accurate system model. Simulation results show that the proposed method is capable of providing considerable bit error rate (BER) performance gains over conventional compensation methods for both balanced and unbalanced antenna configurations.


Item ID:	61650
Item Type:	Article (Research - C1)
ISSN:	1939-9359
Keywords:	orthogonal frequency-division multiplexing (OFDM), peak-to-average power ratio (PAPR), Spatial modulation (SM)
Copyright Information:	© 2019 IEEE.
Date Deposited:	05 May 2020 19:55
FoR Codes:	40 ENGINEERING > 4006 Communications engineering > 400608 Wireless communication systems and technologies (incl. microwave and millimetrewave) @ 100%
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