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A Flexible Subcarrier Multiplexing System with Analog Transport and Digital Processing for 5G (and beyond) Fronthaul

Noor, Shabnam, Assimakopoulos, Philippos, Gomes, Nathan J. (2019) A Flexible Subcarrier Multiplexing System with Analog Transport and Digital Processing for 5G (and beyond) Fronthaul. Journal of Lightwave Technology, 37 (14). pp. 3689-3700. ISSN 0733-8724. E-ISSN 1558-2213. (doi:10.1109/JLT.2019.2918215) (KAR id:74083)

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http://dx.doi.org/10.1109/JLT.2019.2918215

Abstract

A flexible subcarrier multiplexing system combining analog transport with digital domain processing is presented. By making use of band-pass sampling and applying a systematic mapping of signals into available Nyquist zones, the multiplexing system is able to present multiple signals at the same intermediate frequency at the remote site. This simplifies the processing required for multiple antenna systems. We further propose the use of track-and-hold amplifiers at the remote site. These elements are used to extend the mapping to a mapping hierarchy, offering flexibility in frequency placement of signals and relaxation of analog-to-digital converter bandwidth and sampling rate constraints. The system allows the transport of different numerologies in a number of next generation radio access network scenarios. Experimental results for large signal multiplexes with both generic and 5th-generation mobile numerologies show error-vector magnitude performance well within specifications, validating the proposed system. Simulation results from a system model matched to these experimental results provide performance predictions for larger signal multiplexes and larger bandwidths.

Item Type: Article
DOI/Identification number: 10.1109/JLT.2019.2918215
Projects: [UNSPECIFIED] NIRVANA
[UNSPECIFIED] 5G-DRIVE
Uncontrolled keywords: Radio-over-fiber, Subcarrier Multiplexing (SCM), Millimeter Wave (mmW), massive-MIMO (mMIMO), Mobile Fronthaul, Digital Signal Processing
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications > TK5103.4 Broadband communication systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications > TK5103.59 Optical communications
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications > TK5105 Data transmission systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK6540 Radio > TK6570.M6 Mobile communication systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7880 Applications of electronics
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Philippos Assimakopoulos
Date Deposited: 24 May 2019 13:57 UTC
Last Modified: 31 Jan 2020 09:40 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/74083 (The current URI for this page, for reference purposes)
Noor, Shabnam: https://orcid.org/0000-0001-8258-8466
Assimakopoulos, Philippos: https://orcid.org/0000-0002-2550-1317
Gomes, Nathan J.: https://orcid.org/0000-0003-3763-3699
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