BER Analysis of OFDM Receiver using LS Channel Estimation Method with Modified PTS for Different Sub-Blocks

Thanigasalam Muthaiyan and Dananjayan Perumal


Orthogonal frequency division multiplexing, peaktoaverage power ratio (PAPR), Partial Transmit Sequence, LS channel estimation, Bit error rate


Partial transmit sequence (PTS) is a distortion less method used in the Peak-to-Average Power Ratio (PAPR) reduction of Orthogonal Frequency Division Multiplexing (OFDM) signal. But PTS suffers from high computational complexity with increase in sub-blocks, because of exhaustive search of phase factors over all possible combinations. Modified PTS scheme has reduced this complexity by using neighbourhood search algorithm to find the optimum set of phase factors. In this paper, it is proposed to investigate the performance of OFDM receiver using Least Square (LS) channel estimation method. The Bit Error Rate (BER) analysis of the OFDM receiver using LS channel estimation method is made for PAPR reduced OFDM signal using PTS and Modified PTS. Simulation results show that BER increases with PAPR reduction.

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