SLM and Clipping Joint Algorithm for PAPR Reduction in OFDM System

摘要

As one of the most appealing techniques, selective mapping (SLM) provides an effective solution for Peak-to-average Power Ratio (PAPR) reduction in Orthogonal Frequency Division Multiplexing (OFDM) systems, however, results in large computational complexity simultaneously. As compared to SLM, clipping provides a more simple way towards a better PAPR performance, whereas results in degradation of the Bit Error Rate (BER) performance. In this paper, we proposed a joint algorithm called SLM and Quantization Clipping (SLM-QC) scheme, which combined the conventional SLM technology with a modified quantization clipping scheme. The proposed scheme achieves a better exploitation of advantages brought about by each technique alone, with the tradeoff between the PAPR performance and the BER performance being well balanced.