Performance Analysis of OFDM by optimising PAPR

This paper proposes a new technique to optimise the PAPR. It is based on increasing the OFDM symbol period by using a coding technique and then transforming the encoded symbol to be in parallel blocks. One of these blocks, which contain the lowest PAPR, will join the original signal, while the others will be sent as extra information. This information will be extracted in the receiver to recover the original symbol. Mathematical calculations show that increasing Orthogonal Frequency Division Multiplexing (OFDM) symbol period can reduce the Peak to Average Power Ratio (PAPR) of orthogonal frequency division multiplexed signals. This benefit is achieved due to the inverse relationship between the total number of subcarriers and the PAPR.