Indian Journal of Science and Technology
Year: 2017, Volume: 10, Issue: 1, Pages: 1-6
K. M. Gayathri1 , S. Bhargavi2 and N. Thangadurai1
1 Department of Electronics and Communication Engineering, School of Engineering and Technology, Jain University, Jakkasandra Post, Kanakapura Main Road, Ramanagara District, Bangalore – 562112, Karnataka, India 2 Department of Telecommunication Engineering, S.J.C. Institute of Technology, Post Box No. 20, B.B. Road, Chickballapur – 562101, Karnataka, India
Orthogonal Frequency Division Multiplexing (OFDM) is one of the multicarrier modulation methodology efficiently used for transmission of high data rate in communication system. OFDM consists of number of independent sub carrier, where the peak value of amplitude is high, which is a cause for high Peak to Average Power Ratio (PAPR). Hence unique techniques are proposed for PAPR reduction. Here we have proposed an innovative method by integrating the modified Partial Transmit Sequence (PTS), Discrete Cosine Transformation (DCT) and Wavelet Packet Transform (WPT) in a single system. The simulation results of the proposed system shows significant reduction in the PAPR performance than the ordinary PTS technique. Using our proposed method we have attained noticeable reduction in PAPR without casing imbalance in BER performance of the signal.
Keywords: DCT, FFT, OFDM, PTS, WPT
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