Comparative Analysis of FBMC over CP Based MIMO OFDM System and PAPR Improvement of FBMC using Hybrid Technique

Abstract

Filter bank multicarrier (FBMC) has emerged as the favourite multicarrier communication technique for the fifth-generation communication systems. Since it meets the demands of the next generation standards. The achievability of high data rates (10 Gbps) is expected to be attained by the 5G technology. This requires larger bandwidth and efficient usage of the frequency spectrum. Also, to utilize white space, cognitive radio networks are needed. In cognitive radio network very low out of band radiation is desired. To overcome the problems of low spectral efficiency and high out of band radiation in OFDM systems, FBMC is chosen to be a suitable choice. n this thesis FBMC is used as a waveform candidate for 5G communication. High PAPR is always a problem in multicarrier communication system. FBMC is also a multicarrier communication system, so it also suffers from high PAPR problem. To reduce the PAPR several PAPR reduction techniques have been proposed over the last few decades.

In this thesis, a hybrid technique formed by the combined application of Selected mapping (SLM) and Partial transmit sequence (PTS) is proposed for minimising the PAPR.The two conventional techniques are united in a way such that the meritorious qualities for both are highlighted It gives significant performance improvement compared to the SLM and PTS techniques taken separately. A comparative BER analysis for FBMC and CP-OFDM is done. For this scheme simulation is performed to analyze the PAPR performance of FBMC system with various PAPR reduction techniques. All the simulations are performed in MATLAB.