Research Article BER and PSD Improvement of FBMC with Higher Order QAM Using Hermite Filter for 5G Wireless Communication and beyond Hise Teferi Dumari, Demissie Jobir Gelmecha , Rajeev K. Shakya, and Ram Sewak Singh Adama Science and Technology University, School of Electrical Engineering and Computing, Department of Electronics and Communication Engineering, Adama, Post Box: 1888, Ethiopia Correspondence should be addressed to Demissie Jobir Gelmecha; gelmechad@gmail.com Received 20 August 2022; Revised 8 December 2022; Accepted 21 December 2022; Published 9 January 2023 Academic Editor: Iickho Song Copyright © 2023 Hise Teferi Dumari et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Nowadays, multicarrier modulation schemes are being widely used in wireless communication system than single•carrier modulation techniques. Single•carrier modulation schemes are less capable of dealing with multipath fading channels than multicarrier modulation schemes, which results in lower spectral efciency. Multicarrier modulation schemes have the ability to overcome multipath fading channels. Multicarrier modulation technique currently used in 4G technology in many countries is OFDManditiseasyforimplementation,immunetointerference,andprovidefastdatarate.However,therisingusersdemandon wireless communication resulted in need for further advancement of wireless communication system. Te present OFDM transmission does not fulfll the requirements of 5G wireless communication system and beyond due to major limitations such as out of band emission and usage of cyclic prefx. To overcome the challenges of OFDM, diferent modulation schemes like Filter Bank Multicarrier with Ofset•QAM, Filter Bank Multicarrier with QAM, Universal Filter Multicarrier, Filtered•OFDM, and Weighted Overlap and Added•OFDM are proposed. In this study, the Filter Bank Multicarrier with QAM using Hermite prototype flter is proposed to overcome drawbacks of OFDM and all other proposed waveforms. Te performances of each multicarrier technique are analyzed based on power spectral density and bit error rate. Simulation result shows that the power spectraldensityofFBMCwithQAMusingHermite flterresultedin4.7dBreductionofoutofbandemissioncomparedtoFBMC with QAM using PHYDYAS flter. Te bit error rate is also reduced for Vehicular A, Vehicular B, Pedestrian A, and Pedestrian B channel models. 1. Introduction Tewirelesscommunicationindustryiscurrentlyexpanding at the highest rate. Te reason for the fast growth of the wireless communication technologies market is the rising number of subscribers 1]. As a result, cellular networks are requiredtoexpandinordertomeetthegrowingdemandfor wireless communication. In today’s world, a cell phone is an essential tool and its development is accelerating. Te in• creasing load on existing wireless communication networks necessitates the improvement of wireless communication networks’ data rates and reliability to cope with the ever• increasing mobile trafc. To satisfy the users’ needs, cellular network technologies have evolved 2] from frst•generation to ffth•generation and beyond 3]. Te current 4G technology uses OFDM as multicarrier modulation technique. In this modulation scheme, a number of orthogonal closely spaced subcarriers are used as data carrier. Because of the orthogonality of subcarriers, no need to insert guard band between each subcarrier to avoid intercarrierinterference.Tismodulationschemeusescyclic prefx to avoid the interference between each symbol in turn reducingthespectralefciency.Tismodulationschemehas high PAPR and poor out of band emission. Due to these demerits, OFDM cannot be a promising and capable technique for 5G and beyond wireless communication. 5G and beyond technology has special diferences compared to current OFDM. It supports Internet of Tings enabled devices, machine to machine communication and smart vehicles, and high speed data rate ranging up to Hindawi Journal of Electrical and Computer Engineering Volume 2023, Article ID 7232488, 16 pages https://doi.org/10.1155/2023/7232488