Mitigation of Non-linear Distortion Using PTS with Minimal Control Synthesis Method in OFDM System

Orthogonal frequency division multiplexing (OFDM) is a strong candidate for future wireless communication because it is marked by its higher frequency multiplicity and greater immunity to multipath fading. However, the main drawback of OFDM is its high amplitude fluctuations measured by Peak-to-average Power ratio (PAPR), which leads to power inefficiency and requires expensive High power amplifier (HPA) with very good linearity. In this paper, we propose PTS (partial transmit sequence) with MCS (minimal control synthesis) technique to decrease the non-linear distortion and to improve the power efficiency of the non-linear HPA. In the proposed method PTS reduces the PAPR and improves the power efficiency, MCS improves the bit error rate performance of the system. Keywords—OFDM, PAPR, CPTS, Nonlinear HPA