Suitability of OFDM in 5G Waveform – A Review

Abstract

Systematic pursuits are being developed to set forth the framework for the Fifth Generation (5G) wireless standards. This paper emphases on the most extensively deployed technology - Orthogonal Frequency Division Multiplexing (OFDM) that has outpaced other waveform aspirants for Fourth Generation (4G) communication standards. Irrespective of the beneficial features, it does possess a number of significant limitations that mark it as an incompatible candidate for the upcoming 5G standard. This paper highlights on its major drawback i.e high Peak-to-Average Power Ratio (PAPR). Results state that PAPR does cause sudden upsurge to the output signal envelope causing further other damages. There exists a need for more flexible waveforms to replace the conventional OFDM in order to address the unprecedented challenges. The future research directions in the domain are presented.

Exploiting OFDM method for quantum communication

“…This process involves the partitioning of a signal into several closely positioned channels, enabling the simultaneous transmission of data across them. OFDM is highly advantageous for digital TV, wireless internet, and other highspeed data services because of its ability to rapidly and accurately convey data [21,22]. OFDM significantly influences the bit error rate (BER) in communication systems by mitigating wireless channel impairments such as multipath fading and inter-symbol interference (ISI) [23,24].…”

Field programmable gate array implementation of multiwavelet transform based orthogonal frequency division multiplexing system

“…Orthogonal frequency division multiplexing (OFDM) divides the available spectrum into several parallel subcarriers. Each one of these subcarriers is modulated by a data stream with low rate at different orthogonal carrier frequency [1]- [3]. In the traditional OFDM systems, the fast Fourier transform (FFT) is used for fulfilling the requirement of orthogonality between the different subcarriers [4]- [8].…”