Peak to Average Power Ratio Reduction in OFDM Using Pulse Shaping Technique

Diptadeep Das

doi:10.18495/comengapp.v5i2.169

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Affiliations

Diptadeep Das
VIT University

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Peak to Average Power Ratio Reduction in OFDM Using Pulse Shaping Technique

Diptadeep Das

Vol 5 No 2 (2016)

DOI 10.18495/comengapp.v5i2.169

Submitted: Jun 2, 2016

Published: Jun 23, 2016

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a special type of multicarrier modulation in which a signal is split into several narrowband channels at different frequencies. Here data is divided into parallel data streams each transmitted on a separate band. One of the major drawbacks of multicarrier transmission is the high peak-to-average power ratio (PAPR) of the transmit signal. Nyquist filters provide ISI-free transmission. In this paper we are going to propose some new filters which can formulated in an effort to reduce the peak-to-average power ratio (PAPR) of the baseband signal. While maintaining the same excess bandwidth and the zero inter-symbol interference condition. The proposed filters contain various parameters which gives an additional degree of freedom to minimize PAPR for a given roll-off factor Î± .