Performance analysis of PAPR reduction for OFDM-BPSK,-QPSK and -QAM using forward error correcting code

Orthogonal Frequency Division Multiplexing (OFDM) is an attractive modulation technique for transmitting large amounts of digital data over radio waves. A high peak-to-average power ratio (PAPR) is one of the major shortcomings in OFDM systems, as it causes nonlinearity distortion in the transmitter, degrading the performance of the system significantly. In this article, a new PAPR reduction method is proposed using forward error correcting coding technique. This method is based on block coding the input data and introducing deliberate errors prior to transmission iteratively, until the PAPR goes below a previously determined threshold value. Finally we have compared the performance of OFDM- BPSK,-QPSK and -QAM system by using forward error correcting code schemes that are used to encode the data stream.