Frequency Domain Equalization and Post Distortion for LED Communications with Orthogonal Polynomial Based Joint LED Nonlinearity and Channel Estimation

Authors

Weikang Zhao, University of WollongongFollow
Qinghua Guo, University of WollongongFollow
Jun Tong, University of WollongongFollow
Jiangtao Xi, University of WollongongFollow
Yanguang Yu, University of WollongongFollow
Pingjuan Niu, Tianjin Polytechnic University

RIS ID

128616

Publication Details

W. Zhao, Q. Guo, J. Tong, J. Xi, Y. Yu & P. Niu, "Frequency Domain Equalization and Post Distortion for LED Communications with Orthogonal Polynomial Based Joint LED Nonlinearity and Channel Estimation," IEEE Photonics Journal, vol. 10, (4) pp. 7905311-1-7905311-11, 2018.

Abstract

The light-emitting diode (LED) is the major source of nonlinearity in LED communications, and the nonlinearity needs to be effectively modelled and mitigated to avoid the degradation of communication performance. In indoor LED communications, multipath dispersion can lead to inter-symbol interference (ISI) at high data rates. In this paper, we jointly estimate the LED nonlinearity and ISI channel based on an orthogonal polynomial based technique. Then frequency domain equalization and post-distortion are adopted to mitigate the ISI and nonlinearity. Simulation results are provided to demonstrate the effectiveness of the proposed technique.

Grant Number

ARC/DE120101266