BER and PAPR Reduction in OFDM System By Using Companding Technique

Abstract

One of the challenging issues for OFDM is its high Peak to Average Power Ratio (PAPR) which limits its
applications in wireless communication systems using multicarrier modulation technique as OFDM, which
reduces the efficiency of transmit high power amplifier. In this paper, we introduced companding technique
with different value of µ. Later in this paper, simulation results show the PAPR and BER performance and
then comparison by changing modulation scheme without any technique and with companding technique are
evaluated.