Indian Journal of Science and Technology
Year: 2016, Volume: 9, Issue: Special Issue 1, Pages: 1-5
M. Neelima Sai* , K. Aruna Kumari and Srilakshmi Chandana
Department of Electronics and Communication Engineering, P. V. P. Siddhartha Institute of Technology, Kanuru, Vijayawada – 520 007, Andhra Pradesh, India; [email protected]
*Author for correspondence
Department of Electronics and Communication Engineering
Email: [email protected]
Objectives: Orthogonal Frequency Division Multiplexing (OFDM) which is a wide band digital modulation technique has high peak to average power ratio. An advanced Genetic Simulated Annealing Algorithm (GSAA) is here proposed to reduce Peak to Average Power Ratio (PAPR). Statistical Analysis: A hybrid of Genetic and Simulated Annealing Algorithms (SAA) is implemented with two different channels Additive White Gaussian Noise (AWGN) and Rayleigh Fading which improved the performance of PAPR. Compensation of effects as well as reduction in PAPR is achieved. Findings: Though the known method GSAA reduces PAPR by avoiding the computational complexity, local maxima, yet the resultant PAPR is between 5dB and 6dB. The proposed method, proceeds further by incorporating AWGN and Rayleigh Fading channels in the hybrid of GSAA. Implementing the hybrid algorithm with the two proposed channels reduces PAPR between 3dB and 4dB. Hence this method proves to be effective in reduction of PAPR.
Keywords: AWGN, Genetic Simulated Annealing Algorithm, OFDM, PAPR, PTS
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