Iterative Nonlinearity Mitigation and Decoding for LED Communications

Authors

Weikang Zhao, University of WollongongFollow
Qinghua Guo, University of WollongongFollow
Yanguang Yu, University of WollongongFollow
Jiangtao Xi, University of WollongongFollow
Jun Tong, University of WollongongFollow

RIS ID

129966

Publication Details

W. Zhao, Q. Guo, Y. Yu, J. Xi & J. Tong, "Iterative Nonlinearity Mitigation and Decoding for LED Communications," IEEE Photonics Technology Letters, vol. 30, (19) pp. 1-4, 2018.

Abstract

The light-emitting diode (LED) is the major source of nonlinearity in LED communication systems, which needs to be carefully handled to avoid significant performance degradation. Post-distortion is an effective and convenient way to compensate the nonlinear distortion at the receiver side. In this work, we propose a soft-in-soft-out (SISO) post-distorter, which works with a SISO decoder iteratively by exchanging log-likelihood ratios (LLRs) of the coded bits at the receiver. It is demonstrated that the proposed iterative technique can achieve a remarkable performance gain compared to the conventional post-distortion technique in the literature.

Grant Number

ARC/DE120101266