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Experimental Validation of Coherent Joint Transmission in a Distributed-MIMO System with Analog Fronthaul for 6G
KTH Royal Institute of Technology, Sweden; Ericsson, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Industrial Systems.ORCID iD: 0000-0002-9971-2432
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2023 (English)In: 2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), Institute of Electrical and Electronics Engineers (IEEE), 2023, p. 585-590Conference paper, Published paper (Refereed)
Abstract [en]

The sixth-generation (6G) mobile networks must increase coverage and improve spectral efficiency, especially for cell-edge users. Distributed multiple-input multiple-output (D-MIMO) networks can fulfill these requirements provided that transmission/reception points (TRxPs) of the network can be synchronized with sub-nanosecond precision, however, synchronization with current backhaul and fronthaul digital interfaces is challenging. For 6G new services and scenarios, analog radio-over-fiber (ARoF) is a prospective alternative for future mobile fronthaul where current solutions fall short to fulfill future demands on bandwidth, synchronization, and/or power consumption. This paper presents an experimental validation of coherent joint transmissions (CJTs) in a two TRxPs D-MIMO network where ARoF fronthaul links allow to meet the required level of synchronization. Results show that by means of CJT a combined diversity and power gain of +5 dB is realized in comparison with a single TRxP transmission.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2023. p. 585-590
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:ri:diva-66228DOI: 10.1109/eucnc/6gsummit58263.2023.10188222OAI: oai:DiVA.org:ri-66228DiVA, id: diva2:1795372
Conference
2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
Note

This project is financially supported by the Swedish Foundation for Strategic Research (project No. SM21-0047). Also, it is supported in part by the Swedish Research Council (VR) project 2019–05197 and Vinnova project 2022–02545 (A-FRONTHAUL).

Available from: 2023-09-08 Created: 2023-09-08 Last updated: 2024-03-04Bibliographically approved

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Djupsjöbacka, AndersOzolins, OskarsPang, Xiaodan

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