{"title":"Joint DFT Precoding and Discrete Wavelet Transform in SC-FDMA NOMA System with Carrier Frequency Offset Compensation","authors":"M. Subha, D. Judson","doi":"10.37896/pd91.4/91463","DOIUrl":null,"url":null,"abstract":"Nonorthogonal multiple access (NOMA) is a promising multiple access (MA) technique for next-generation wireless systems with its capability to offer higher spectral efficiency, supporting massive network elements and low latency. Single-carrier frequency division multiple access (SC-FDMA) can be combined with NOMA systems to improve spectral efficiency and user capacity. This study proposes a transceiver structure for SC-FDMA based NOMA systems using discrete wavelet transform (DWT). The proposed transceiver structure employs joint discrete Fourier transform (DFT) precoding and DWT to obtain a higher bit error rate (BER) performance over conventional systems. The proposed scheme is referred to as a joint DFT precoded DWT SC-FDMA NOMA system that benefits through outstanding orthogonality and spectral containment characteristics of DWT, thereby improving the performance of the SC-FDMA NOMA system. Moreover, we have investigated the performance of the proposed system with variations in carrier frequency offset (CFO) to show the supremacy of the proposed SC‐FDMA NOMA System over multipath channels.","PeriodicalId":20006,"journal":{"name":"Periodico Di Mineralogia","volume":"8 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2022-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Periodico Di Mineralogia","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.37896/pd91.4/91463","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 1
Abstract
Nonorthogonal multiple access (NOMA) is a promising multiple access (MA) technique for next-generation wireless systems with its capability to offer higher spectral efficiency, supporting massive network elements and low latency. Single-carrier frequency division multiple access (SC-FDMA) can be combined with NOMA systems to improve spectral efficiency and user capacity. This study proposes a transceiver structure for SC-FDMA based NOMA systems using discrete wavelet transform (DWT). The proposed transceiver structure employs joint discrete Fourier transform (DFT) precoding and DWT to obtain a higher bit error rate (BER) performance over conventional systems. The proposed scheme is referred to as a joint DFT precoded DWT SC-FDMA NOMA system that benefits through outstanding orthogonality and spectral containment characteristics of DWT, thereby improving the performance of the SC-FDMA NOMA system. Moreover, we have investigated the performance of the proposed system with variations in carrier frequency offset (CFO) to show the supremacy of the proposed SC‐FDMA NOMA System over multipath channels.
期刊介绍:
Periodico di Mineralogia is an international peer-reviewed Open Access journal publishing Research Articles, Letters and Reviews in Mineralogy, Crystallography, Geochemistry, Ore Deposits, Petrology, Volcanology and applied topics on Environment, Archaeometry and Cultural Heritage. The journal aims at encouraging scientists to publish their experimental and theoretical results in as much detail as possible. Accordingly, there is no restriction on article length. Additional data may be hosted on the web sites as Supplementary Information. The journal does not have article submission and processing charges. Colour is free of charges both on line and printed and no Open Access fees are requested. Short publication time is assured.
Periodico di Mineralogia is property of Sapienza Università di Roma and is published, both online and printed, three times a year.