Hybrid Method for PAPR Reduction in SFBC OFDM Systems

Abstract

Orthogonal Frequency Division Multiplexing is an important technique in wireless communication systems. Multiple Input Multiple Output (MIMO)-OFDM with Space Frequency Block Code (SFBC) is a smart technique used due to its capability to support elevated data rates, large capacity and robust to multipath fading. A high peak-to-average-power ratio is one of the disadvantages of OFDM. Many PAPR Reduction techniques have been introduced like Companding and Selective mapping (SLM) techniques. In proposed method, the optimum PAPR can be achieved than above methods by a new hybrid method i.e., combining SLM and Companding techniques.