PAPR Reduction in OFDM Systems Using Compressive Sensing for Energy-Efficient 5G Networks

Abstract

Orthogonal frequency division multiplexing (OFDM) is a multi-carrier transmission technique used to accomplish high data rate transmission in wireless communications. OFDM is one of the major players of multi-carrier communication systems in 5G networks due to its high spectral efficiency and is immune to multipath fading. However, the OFDM signal suffers from significant amplitude fluctuations resulting in a large peak-to-average power ratio (PAPR), which is one of the main downsides of OFDM systems. Therefore, limiting the PAPR in OFDM systems is a key issue, as decreasing PAPR results in lower power consumption and hence an extended battery life. Reducing PAPR without degrading power usage efficiency and bit error rate (BER) is a challenging issue in improving communication performance. This chapter discusses the use of compressive sensing for PAPR reduction in OFDM systems to deploy in energy-efficient 5G networks.