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Effective Minimization of PAPR in Optical OFDM Systems with Transformations Based Greedy Algorithm

K. Vinoth Babu, Dr.G. Ramachandra Reddy, K. Balasundaram

Abstract


Orthogonal frequency division multiplexing (OFDM) is a modulation technique which is now used in broadband wired and wireless communication systems. OFDM is also a promising technology for optical communications. This paper gives the major drawbacks of optical OFDM and methods to minimize them. The main drawbacks of OFDM are its high Peak to Average Power Ratio (PAPR) and its sensitivity to phase noise and frequency offset. In this paper, five novel schemes based on greedy algorithm are proposed to reduce the PAPR in OFDM systems.

Keywords


OFDM, Cyclic Prefix, Frequency Offset, Phase Noise, PAPR

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References


Jean Armstrong, “OFDM for Optical Communications “, Journal of Light wave Technology, Vol. 27, No.3 February 1, 2009, pp.189-204.

Xiaodong Zhu et. al “Novel Schemes Based on Greedy Algorithm for PAPR Reduction in OFDM Systems “,IEEE Transanctions on consumer Electronics,Vol.54,N0.3,August 2008.

X. Li and L.J. Cimini, Jr., “Effect of clipping filtering on the performance of OFDM systems” IEEE Communication Letters, Vol.2 ,N0.5,no.5,May 1998,pp.131-133.

D.H. Park and H.K. Song, “A New PAPR Reduction Technique of OFDM system with nonlinear High Power Amplifier,” IEEE Transanctions on Consumer Electronics ,Vol.53,no.2,pp.327-332,May 2007.


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