Blind selective mapping for single-carrier frequency division multiple access system

Abstract

Single-Carrier Frequency Division Multiple Access (SC-FDMA) signals have a Peak-to-Average Power Ratio (PAPR) problem. So, there is a need for PAPR reduction techniques to be implemented on these signals. The PAPR becomes larger as the modulation order increases. Recently, Conventional Selective Mapping (C-SLM) has been used to reduce the PAPR of SC-FDMA signals. Unfortunately, the standard C-SLM technique requires the transmission of Side Information (SI) to the receiver side. In this paper, a Blind Selective Mapping (B-SLM) technique is proposed to reduce the PAPR in the SC-FDMA system, where there is no change in the C-SLM algorithm at the transmitter and no necessity for SI transmission. Our simulation results show that the PAPR performance of the proposed B-SLM technique is approximately the same as that of the C-SLM technique. The proposed technique is applied to the SC-FDMA system for Single-Input Single-Output (SISO) and Multiple-Input Multiple-Output (MIMO) scenarios. The proposed B-SLM technique provides a reduction in bandwidth without a significant degradation in the Bit-Error Rate (BER) performance. Also, we present a comparison in the PAPR performance between the B-SLM and the other PAPR reduction techniques such as the Partial Transmit Sequence (PTS) and the C-SLM.