An SLM-Windowing Approach for PAPR Reduction in OFDM Systems

One of the major concerns which the existing IoT and cellular systems face is the limited channel bandwidth needing to accommodate increasing number of users with higher spectral demands. Thus the choice of multiplexing techniques becomes extremely important as it critically decides the amount of spectrum available to each user and the total number of users which can be accommodated in the limited bandwidth space. This paper presents a selective mapping based approach along with the detection of residual peaks to get extremely low peak to average power ratio values for the OFDM transmission scheme. The CCDF of the PAPR values is chosen as the value to be considered for system performance. It has been shown that the proposed scheme attains lesser PAPR values compared to existing baseline techniques.