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

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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Correspondence to Kodzovi Acolatse.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Acolatse, K., Bar-Ness, Y. & Wilson, S.K. Novel Techniques of Single-CarrierFrequency-Domain Equalization for Optical Wireless Communications. EURASIP J. Adv. Signal Process. 2011, 393768 (2011). https://doi.org/10.1155/2011/393768

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Keywords

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