PAPR reduction in SLM-OFDM using Lehmer random number generator

One of the popular methods of modulation in high speed wireless communication is Orthogonal frequency division multiplexing (OFDM). However, the time domain version of signals suffer from large envelope variations, which are often characterized by the Peak-to-Average Power Ratio (PAPR). One of the promising PAPR reduction techniques for OFDM is selective-mapping (SLM). In this paper we introduce an alternate way to generate phase sequence using Lehmer random number generator (or) multiplicative congruential generator (MCG). Simulations compare PAPR reduction performance using other sequences such as Hadamard and Riemann. Observations drawn from results depict that the proposed sequence provides PAPR reduction equivalent to random sequence with less side information (SI) and better than Hadamard. Hence, MCG can be used as a good alternative for Hadamard and random sequence.