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  • Research Article
  • Open Access

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

  • 1Email author,
  • 1 and
  • 2
EURASIP Journal on Advances in Signal Processing20102011:393768

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

  • Received: 16 April 2010
  • Accepted: 26 September 2010
  • Published:

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.

Keywords

  • Information Technology
  • Light Emit Diode
  • Orthogonal Frequency Division Multiplex
  • Wireless Communication
  • Quantum Information

Publisher note

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Authors’ Affiliations

(1)
Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA
(2)
Department of Electrical Engineering, Santa Clara University, Santa Clara, CA 95053, USA

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