Muhammad Qurratulain Khan;Mohammad Parvini;Philipp Schulz;Gerhard Fettweis
{"title":"From mMIMO to xMIMO: A Unified Design for Spatial Wideband Effect Mitigation","authors":"Muhammad Qurratulain Khan;Mohammad Parvini;Philipp Schulz;Gerhard Fettweis","doi":"10.1109/LWC.2025.3553905","DOIUrl":null,"url":null,"abstract":"Large antenna apertures and/or ultra wideband (UWB) transmission engender the spatial wideband (SWB) effect, resulting in reduced array gain, spectral efficiency (SE), and higher bit error probability. To this end, this letter proposes a novel double-delay-phase precoding (DDPP) architecture that can be realized with a small number of true time delays (TTDs), mitigating the negative impact of the SWB effect. The numerical results, over the massive and extreme multiple-input multiple-output (MIMO) use cases and in the frequency range (FR)2 and FR3, showcase the effectiveness of the proposed DDPP in terms of the array gain, SE, and bit error rate (BER).","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"14 6","pages":"1723-1727"},"PeriodicalIF":5.1000,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10937988","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10937988/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
Large antenna apertures and/or ultra wideband (UWB) transmission engender the spatial wideband (SWB) effect, resulting in reduced array gain, spectral efficiency (SE), and higher bit error probability. To this end, this letter proposes a novel double-delay-phase precoding (DDPP) architecture that can be realized with a small number of true time delays (TTDs), mitigating the negative impact of the SWB effect. The numerical results, over the massive and extreme multiple-input multiple-output (MIMO) use cases and in the frequency range (FR)2 and FR3, showcase the effectiveness of the proposed DDPP in terms of the array gain, SE, and bit error rate (BER).
期刊介绍:
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.