Analysis of Multiuser Detectors and Performance improvement in DS-CDMA system using Multistage Multiuser Detection Techniques

Analysis of Multiuser Detectors and Performance improvement in DS-CDMA system using Multistage Multiuser Detection Techniques | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Analysis of Multiuser Detectors and Performance improvement in DS-CDMA system using Multistage Multiuser Detection Techniques Ravindrababu Jaladanki, Krishnarao Ede, Raja Rao Yasoda This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-380284/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Among the various interferences, the Multiple Access Interference (MAI) is a significant issue in Direct Sequence Code Division Multiple Access (DS-CDMA) system due to its users. When the number of users is increasing the MAI is likewise increments, subsequently the system performance progressively diminishes particularly in fading environment. In this paper, the system performance is improved by the proposed multistage multiuser detection technique called Multistage Multiuser Differencing Partial Parallel Interference Cancellation (DPPIC). This is the combination of Partial Parallel Interference Cancellation (PPIC) and Differencing Parallel Interference Cancellation (DPIC). Multistage Multiuser Parallel Interference Cancellation (PIC) and Multistage Multiuser PPIC techniques that exist gave improved system performance meaning as the number of stages increases the MAI decreases but at the cost of increased computational complexity. The computational complexity was reduced by utilizing Multistage Difference PIC (DPIC) technique but with no improvement in the performance. To improve the system performance as well as reduce the computational complexity Multistage Multiuser Partial Differencing Parallel Interference Cancellation (PDPIC) method can be used. The simulation results show that the proposed DPPIC technique performs better than PIC, PPIC and PDPIC in terms of Bit Error Rate (BER) versus normalized signal amplitude ( i.e., E b / N 0 ), but computational complexity slightly more than PDPIC in fading environment. Technical Communication Multiuser detection MAI PIC PPIC DPIC PDPIC DPPIC. Full Text Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-380284","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":30872685,"identity":"037241aa-63d6-43fe-86a3-205fb5c8aca9","order_by":0,"name":"Ravindrababu Jaladanki","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAwUlEQVRIiWNgGAWjYBACxgYehgMJBjZyIM6BB0RqYXzwoSLNGKwlgTh7eJgNZ5w5nNgAYhOlhXn22WPSvG2H0+eHHX4ItMVOTreBkMP68tKAWtJzN95OMwBqSTY2O0BISw+PGVCLde7G2QkgLQcStxGphTndcHb6B6K1GAO975wgL51DtC18iaBANtwgnVMAjCAi/GLYw3sAFJXy8rPTN3/4UGEnR1hLA5RhAFZpQEA5CMjDGQ14VI2CUTAKRsHIBgBUEEc34Osh5AAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-0638-8208","institution":"Siddhartha Institute of Technology","correspondingAuthor":true,"prefix":"","firstName":"Ravindrababu","middleName":"","lastName":"Jaladanki","suffix":""},{"id":30872686,"identity":"393fa9d4-36b3-4247-be07-0964ec6ba0bc","order_by":1,"name":"Krishnarao Ede","email":"","orcid":"","institution":"Lakireddy Balireddy College of Engineering","correspondingAuthor":false,"prefix":"","firstName":"Krishnarao","middleName":"","lastName":"Ede","suffix":""},{"id":30872687,"identity":"d001b811-f779-4ef7-bcee-f48debb72474","order_by":2,"name":"Raja Rao Yasoda","email":"","orcid":"","institution":"Velagapudi Ramakrishna Siddhartha Engineering College","correspondingAuthor":false,"prefix":"","firstName":"Raja","middleName":"Rao","lastName":"Yasoda","suffix":""}],"badges":[],"createdAt":"2021-03-31 16:59:13","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-380284/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-380284/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":13639918,"identity":"688d8884-1575-4b30-a84a-5afb40fb7cbb","added_by":"auto","created_at":"2021-09-17 08:57:48","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":679010,"visible":true,"origin":"","legend":"","description":"","filename":"JRBDPPIC18.12.2020withdeclaration.pdf","url":"https://assets-eu.researchsquare.com/files/rs-380284/v1_covered.pdf"},{"id":9952574,"identity":"534bcc68-b281-4f33-96c3-4194927e2faf","added_by":"auto","created_at":"2021-06-03 18:35:00","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":675533,"visible":true,"origin":"","legend":"","description":"","filename":"JRBDPPIC18.12.2020withdeclaration.pdf","url":"https://assets-eu.researchsquare.com/files/rs-380284/v1_covered.pdf"}],"financialInterests":"","formattedTitle":"Analysis of Multiuser Detectors and Performance improvement in DS-CDMA system using Multistage Multiuser Detection Techniques","fulltext":[{"header":"Full Text","content":"\u003cp\u003eDue to technical limitations, full-text HTML conversion of this manuscript could not be completed. 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When the number of users is increasing the MAI is likewise increments, subsequently the system performance progressively diminishes particularly in fading environment. In this paper, the system performance is improved by the proposed multistage multiuser detection technique called Multistage Multiuser Differencing Partial Parallel Interference Cancellation (DPPIC). This is the combination of Partial Parallel Interference Cancellation (PPIC) and Differencing Parallel Interference Cancellation (DPIC). Multistage Multiuser Parallel Interference Cancellation (PIC) and Multistage Multiuser PPIC techniques that exist gave improved system performance meaning as the number of stages increases the MAI decreases but at the cost of increased computational complexity. The computational complexity was reduced by utilizing Multistage Difference PIC (DPIC) technique but with no improvement in the performance. 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