Cascaded Gradient Sequence for LTE System to Reduce Peak Power

Abstract

This article provides an assessment of combinational technique for maximum power reduction in the transmitter of long-term evolution (LTE). An intelligent combination has been presented using constellation extension and scrambling technique in the Orthogonal Frequency Division Multiplexing (OFDM) structure. The principle of this arrangement approach is to apply approximate gradient project (AGP) and partial transmit sequence (PTS) on the OFDM subcarrier. The simulation results show that the proposed approach reduce the PAPR as compared to traditional techniques and maintain the bit error rate (BER) performance of the system especially at low signal to noise ratio (SNR).