Analysis of Various PAPR Reduction Techniques in of DM System
Mohammad Abdul Raqeeb

Mohammad Abdul Raqeeb, B.Tech, Department of ECE, CVR College of Engineering, Hyderabad (Telangana), India.
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 1738-1742 | Volume-8 Issue-7, May 2019 | Retrieval Number: F3465048619/19©BEIESP
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Abstract: Orthogonal Division Multiplexing (OFDM) is a modern transmission technique used widely in many digital communications. It utilizes multiple carriers that are modulated simultaneously. Though they overlap, owing to the orthogonality of sub-carriers they can be demodulated using correct time windowing at the receiver. OFDM is very effective against inter symbol interference and frequency selective fading providing high spectral efficiency. The major drawback of this system which reduces its efficiency is the distortion of the signal caused at the High Power Amplifier (HPA) of a transmitter called as Peak-to-Average-Ratio (PAPR). In this paper we are going to analyze various techniques used to reduce the PAPR in OFDM system. Simulations are used to analyze the efficiency of the techniques used which signifies Weighted OFDM to be providing much better PAPR reduction and a better Bit Error Rate (BER).
Keyword: OFDM, PAPR, Clipping OFDM, Weighted OFDM, Partial Transmit Scheme (PTS), BER, SNR.
Scope of the Article: Pattern Recognition and Analysis.