International Journal of Radio, Space and Aerospace Engineering

Authors: Sahil Hamid, Ruchi Sharma, Mahinder Kumar

Abstract: Orthogonal frequency division multiplexing (OFDM) is a well-organized frequently used multicarrier modulation method for high speed data communication over multipath fading channels. OFDM modulation technique offer many benefits for multicarrier transmission at high information rates. One of the major limitations of OFDM is high peak to-average power ratio (PAPR) of the transmitted signal that badly influences the complexity of high power amplifier. Various promising procedures have been anticipated and implemented to decrease PAPR of OFDM signal at the outlay of transmitted signal power, bit error rate (BER), complexity and so on. In this paper, Clipping and Filtering, Selective Mapping (SLM), Partial Transmits Sequence (PTS), tone insertion and tone reservation techniques are discussed briefly for PAPR reduction OFDM signal at transmitter. A brief comparison of these PAPR reduction techniques is done in light of CCDF and BER.