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Spectrally efficien...
Spectrally efficient digitized radio-over-fiber system with k-means clustering-based multidimensional quantization
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- Zhang, Lu (author)
- KTH,Shanghai Jiao Tong University, China; KTH Royal Institute of Technology, Sweden
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- Pang, Xiaodan, Dr. (author)
- KTH,RISE,Acreo,KTH Royal Institute of Technology, Sweden,RISE Acreo AB, Networking & Transmiss Lab, S-16425 Kista, Sweden
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- Ozolins, Oskars (author)
- RISE,Acreo
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- Udalcovs, Aleksejs (author)
- RISE,Acreo
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- Popov, Sergei (author)
- KTH Royal Institute of Technology, Sweden
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- Xiao, Shilin (author)
- Shanghai Jiao Tong University, China
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- Hu, Weisheng (author)
- Shanghai Jiao Tong University, China
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- Chen, Jiajia (author)
- KTH,South China Normal Univ, South China Acad Adv Optoelect, MOE Int Lab Opt Informat Technol, Guangzhou 510006, Guangdong, Peoples R China,KTH Royal Institute of Technology, Sweden; South China Normal University, China
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(creator_code:org_t)
- Optical Society of America, 2018
- 2018
- English.
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In: Optics Letters. - : Optical Society of America. - 0146-9592 .- 1539-4794. ; 43:7, s. 1546-1549
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We propose a spectrally efficient digitized radio-over-fiber (D-RoF) system by grouping highly correlated neighboring samples of the analog signals into multidimensional vectors, where the k-means clustering algorithm is adopted for adaptive quantization. A 30 Gbit/s D-RoF system is experimentally demonstrated to validate the proposed scheme, reporting a carrier aggregation of up to 40 100 MHz orthogonal frequency division multiplexing (OFDM) channels with quadrate amplitude modulation (QAM) order of 4 and an aggregation of 10 100 MHz OFDM channels with a QAM order of 16384. The equivalent common public radio interface rates from 37 to 150 Gbit/s are supported. Besides, the error vector magnitude (EVM) of 8% is achieved with the number of quantization bits of 4, and the EVM can be further reduced to 1% by increasing the number of quantization bits to 7. Compared with conventional pulse coding modulation-based D-RoF systems, the proposed D-RoF system improves the signal-to-noise-ratio up to similar to 9 dB and greatly reduces the EVM, given the same number of quantization bits. (c) 2018 Optical Society of America
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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