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Digital mobile fronthaul employing differential pulse code modulation with suppressed quantization noise
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Optical Network Laboratory (ON Lab). State Key Laboratory of Advanced Optical Communication System and Networks, Shanghai Jiao Tong University, Shanghai, China.
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Optical Network Laboratory (ON Lab). Networking and Transmission Laboratory, RISE Acreo AB, Kista, Sweden.
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2017 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 25, no 25, p. 31921-31936Article in journal (Refereed) Published
Abstract [en]

A differential pulse code modulation (DPCM) based digital mobile fronthaul architecture is proposed and experimentally demonstrated. By using a linear predictor in the DPCM encoding process, the quantization noise can be effectively suppressed and a prediction gain of 7 similar to 8 dB can be obtained. Experimental validation is carried out with a 20 km 15-Gbaud/lambda 4-level pulse amplitude modulation (PAM4) intensity modulation and direct detection system. The results verify the feasibility of supporting 163, 122, 98, 81 20-MHz 4, 16, 64, 256 QAM based antenna-carrier (AxC) containers with only 3, 4, 5, 6 quantization bits at a sampling rate of 30.72MSa/s in LTE-A environment. Further increasing the number of quantization bits to 8 and 9, 1024 quadrature amplitude modulation (1024 QAM) and 4096 QAM transmission can be realized with error vector magnitude (EVM) lower than 1% and 0.5%, respectively. The supported number of AxCs in the proposed DPCM-based fronthaul is increased and the EVM is greatly reduced compared to the common public radio interface (CPRI) based fronthaul that uses pulse code modulation. Besides, the DPCM-based fronthaul is also experimentally demonstrated to support universal filtered multicarrier signal that is one candidate waveform for the 5th generation mobile systems.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 25, no 25, p. 31921-31936
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-220601DOI: 10.1364/OE.25.031921ISI: 000417591100100PubMedID: 29245861Scopus ID: 2-s2.0-85038213036OAI: oai:DiVA.org:kth-220601DiVA, id: diva2:1174569
Note

QC 20180116

Available from: 2018-01-16 Created: 2018-01-16 Last updated: 2018-02-20Bibliographically approved

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Pang, XiaodanSchatz, RichardWestergren, UrbanJacobsen, GunnarPopov, SergeiWosinska, LenaChen, Jiajia

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Zhang, LuPang, XiaodanSchatz, RichardWestergren, UrbanJacobsen, GunnarPopov, SergeiWosinska, LenaChen, Jiajia
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Optical Network Laboratory (ON Lab)School of Engineering Sciences (SCI)
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Optics Express
Atom and Molecular Physics and Optics

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