A hybrid PAPR reduction scheme for OFDM using SLM with clipping at the transmitter, and sparse reconstruction at the receiver

摘要

This paper presents a technique to handle the problem of high peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. The presented scheme is a combination of two well-known techniques, namely selected mapping (SLM) and clipping. In contrast to other hybrid schemes, where the mentioned techniques are performed consecutively, we integrate the clipping procedure in the SLM algorithm. This yields an additional PAPR reduction compared to the serial combination. Further, the clipping strategies are considered with focus on receiver-side peak reconstruction using methods provided by the theory of Compressed Sensing. Knowledge on the clipping strategies at the receiver yields an additional gain in peak reconstruction and reduces the bit error probability of the transmission. Simulation results verify the performance of the presented scheme.