Open Access

Novel Techniques of Single-CarrierFrequency-Domain Equalization for Optical Wireless Communications

  • Kodzovi Acolatse1Email author,
  • Yeheskel Bar-Ness1 and
  • Sarah Kate Wilson2
EURASIP Journal on Advances in Signal Processing20102011:393768

https://doi.org/10.1155/2011/393768

Received: 16 April 2010

Accepted: 26 September 2010

Published: 4 October 2010

Abstract

We investigate the use of single carrier frequency domain equalization (SCFDE) over a diffuse optical wireless (DOW) communications. Recently orthogonal frequency division multiplexing (OFDM) has been applied to DOW communications. However, due to high peak-to-average power ratio (PAPR), the performance of OFDM can severely be affected by the nonlinear characteristics of light emitting diodes (LED). To avoid a PAPR problem, we present in this paper a modified form of SCFDE for DOW communications. We propose three different ways of using SCFDE with DOW communications and show that they exhibit lower PAPR and provide better bit-error rate (BER) performance in the presence of the LED nonlinearity.

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Authors’ Affiliations

(1)
Department of Electrical and Computer Engineering, New Jersey Institute of Technology
(2)
Department of Electrical Engineering, Santa Clara University

Copyright

© Kodzovi Acolatse et al. 2011

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.