Theoretical Analysis and Performance Comparison of OFDM and GFDM Signals for 5G Cellular Networks: A Review

Authors:

Nagarjuna Telagam,S.Lakshmi,K.Nehru,

DOI NO:

https://doi.org/10.26782/jmcms.2019.04.00033

Keywords:

I4.0,OOB, MIMO,GFDM,OFDM,5G,PAPR,Index Modulation,Precoding,

Abstract

The mobile networks in 5G must deliver high data rates with less latency. This paper presents the review of theoretical and comparative analysisbetween Orthogonal frequency division multiplexing (OFDM)and Generalised frequency division multiplexing (GFDM)waveformsfor 5G networks. GFDM is one of the promising candidate waveforms for 5G. This waveform supports multi-carrier system with malleable of pulse shaping filter. It supportsMultiple input and Multiple output(MIMO)and provides a high diversity gain. It meets the Industry 4.0 (I4.0) also called as smart factory requirements in with low Out-Of-Band (OOB) emissions. The GFDM transceiver is implemented on national instruments LabVIEW USRP devices and tested successfully for high data rates. The purpose of this paper is to discuss different research areas and evaluate different approaches for 5G Networks. This paper mainly focuses on some research areas such as peak to average power ratio (PAPR), Precoding techniques, index modulations, channel estimation and applications of the signal. The simulation results show that the GFDM outperforms OFDM for5G candidate waveform race. We conclude with several promising directions for future research of GFDM waveform in this paper.

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