Abstract
Orthogonal Frequency Division Multiplexing (OFDM) is one of the most advanced technologies for high speed data access in mobile communication. It’s significantly increases the capacity, data-rate etc. but one of its disadvantage is high Peak Average Power Ratio (PAPR) which reduce the performance of transmitter amplifier. In this study, PAPR is reduced by using a clipping and filtering technique for different modulation schemes like Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM-64) and Phase Shift Keying (PSK-64). Result shows that PAPR is significantly reduced as compared to conventional Clipping and Filtering Technique.
Highlights
Orthogonal Frequency Division Multiplexing (OFDM) System has achieved a lot of attention among different modulation techniques because of its robustness nature to inter symbol interference
The Peak Average Power Ratio (PAPR) reduction is done for Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), QAM-64 and PSK-64
It is seen that PAPR reduction is calculated for BPSK, QPSK, PSK and QAM
Summary
OFDM System has achieved a lot of attention among different modulation techniques because of its robustness nature to inter symbol interference. A lot of techniques have been proposed in the past (Kumar and Gupta, 2015a; 2015b). The simple way to reduce the PAPR is by clipping the high amplitude peaks that creates the spikes at the output.
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