Title

On Iterative Compensation of Clipping Distortion in OFDM Systems

RIS ID

131006

Publication Details

S. Liang, J. Tong & L. Ping, "On Iterative Compensation of Clipping Distortion in OFDM Systems," IEEE Wireless Communications Letters, vol. 8, (2) pp. 436-439, 2019.

Abstract

We consider an iterative compensation (IC) method to treat clipping distortion in orthogonal frequency division multiplexing (OFDM) systems with clipping. A conventional approach is using extrinsic information (EI) from a decoder to estimate and cancel clipping distortion iteratively. In this letter, feedback in the form of a posteriori information (API) from the decoder is investigated. Correlation may be introduced among messages in iterative processing when API is directly used as feedback. We show that carefully choosing a linearization model can suppress such correlation. Simulation results show that the API approach outperforms the EI one.

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Link to publisher version (DOI)

http://dx.doi.org/10.1109/LWC.2018.2874935