Orthogonal Polynomial-Based Nonlinearity Modeling and Mitigation for LED Communications
Open Access
- 15 June 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Journal
- Vol. 8 (4), 1-12
- https://doi.org/10.1109/jphot.2016.2581485
Abstract
The light-emitting diode (LED) is the major source of nonlinearity in LED communications, and the nonlinearity needs to be effectively modeled and thereby mitigated through predistortion or postdistortion to avoid degradation of communication performance. A memory polynomial is often used for LED nonlinearity modeling and mitigation in the literature. However, the estimation of memory polynomial coefficients suffers from numerical instability, resulting in inaccurate modeling and poor performance in nonlinearity mitigation. In this paper, we propose an orthogonal polynomial-based nonlinearity modeling and mitigation technique for LED communications with pulse amplitude modulation (PAM) signaling and show that the proposed technique significantly outperforms the conventional memory polynomial-based techniques.Keywords
Funding Information
- National Science and Technology Support Project (2014BAH03F01)
- ARC DECRA (DE120101266)
This publication has 24 references indexed in Scilit:
- Nonlinear distortion mitigation in visible light communicationsIEEE Wireless Communications, 2015
- Adaptive Postdistortion for Nonlinear LEDs in Visible Light CommunicationsIEEE Photonics Journal, 2014
- Comparison of Orthogonal Frequency-Division Multiplexing and Pulse-Amplitude Modulation in Indoor Optical Wireless LinksIEEE Transactions on Communications, 2011
- Impact of LED nonlinearities on optical wireless OFDM systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2010
- Impact of Nonlinear LED Transfer Function on Discrete Multitone Modulation: Analytical ApproachJournal of Lightwave Technology, 2009
- Non-linearity effects and predistortion in optical OFDM wireless transmission using LEDsInternational Journal of Ultra Wideband Communications and Systems, 2009
- Orthogonal Polynomials for Power Amplifier Modeling and Predistorter DesignIEEE Transactions on Vehicular Technology, 2004
- Orthogonal Polynomials for Complex Gaussian ProcessesIEEE Transactions on Signal Processing, 2004
- Digital predistortion of wideband signals based on power amplifier model with memoryElectronics Letters, 2001
- Two Theorems on Inverses of Finite Segments of the Generalized Hilbert MatrixMathematical Tables and Other Aids to Computation, 1959