A New Phase Sequence Set Generation to Reduce PAPR in SLM - GFDM Systems

One of the well-known Generalised frequency division multiplexing (GFDM) peak to average power ratio (PAPR) reduction methods is Selected Mapping (SLM), which produces a number of different signal representations using a bank of modulation matrices. One of the main issues with this method is that the transmitter must communicate more side information (SI) bits in order for the receiver to recover the original data, which results in ineffective transmission and data rate loss. Lehmer sequence, a new phase sequence generation technique for the SLM technique, is suggested in this paper using the Lehmer Random Number Generator (LRNG). In order to prevent SI bits from being directly sent, the periodicity property of this pattern is used to incorporate the SI bits for 16-PSK modulation, within the transmitted data block. The simulation findings show that the proposed SLM (PSLM) marginally enhances PAPR reduction compared to conventional SLM (CSLM) for greater values of an expansion factor without affecting the bit error rate (BER).