Title:
MIMO SIGNAL PROCESSING DEVICE AND OPTICAL WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/145692
Kind Code:
A1
Abstract:
A MIMO signal processing device 1 comprises: optical wavelength demultiplexers 31 to 3N to which N RoF signals are input and which each separate a carrier frequency component and a sideband component of the RoF signal; an optical matrix operator 5C to which the carrier frequency components of the N RoF signals are input, and which perform, with respect to the complex amplitude intensities of the carrier frequency components, processing equivalent to an N×N matrix operation and output the carrier frequency components of the N RoF signals; optical matrix operators 5U, 5L to which the sideband components of the N RoF signals are input and which, with respect to the complex amplitude strengths of the sideband components, perform processing equivalent to an N×N matrix operation and output the sideband components of the N RoF signals; and optical wavelength multiplexers 71 to 7N to which corresponding combinations of the carrier frequency components and the sideband components of the N RoF signals are input, and which respectively combine the combinations to output N RoF signals.
Inventors:
SATO TAKANORI (JP)
Application Number:
PCT/JP2023/001954
Publication Date:
August 03, 2023
Filing Date:
January 23, 2023
Export Citation:
Assignee:
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
H04B10/2575; H01Q3/26; H01Q21/06; H04B7/0413; H04J14/02
Domestic Patent References:
| WO2021106041A1 | 2021-06-03 |
Other References:
CHRISTOS TSOKOS, ELIAS MYLONAS, PANOS GROUMAS, VASILIS KATOPODIS, LEFTERIS GOUNARIDIS, ROELOF BERNARDUS TIMENS, RUUD M. OLDENBEUVI: "Analysis of a Multibeam Optical Beamforming Network Based on Blass Matrix Architecture", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE, USA, vol. 36, no. 16, 15 August 2018 (2018-08-15), USA, pages 3354 - 3372, XP055639682, ISSN: 0733-8724, DOI: 10.1109/JLT.2018.2841861
TSOKOS CHRISTOS; MYLONAS ELIAS; GROUMAS PANOS; GOUNARIDIS LEFTERIS; AVRAMOPOULOS HERCULES; KOULOUMENTAS CHRISTOS: "Optical Beamforming Network for Multi-Beam Operation With Continuous Angle Selection", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 31, no. 2, 15 January 2019 (2019-01-15), USA, pages 177 - 180, XP011705746, ISSN: 1041-1135, DOI: 10.1109/LPT.2018.2889411
ITO, KOLA; SUGA, MIZUKI; SHIRATO, YUSHI; KITA, NAOKI; ONIZAWA, TAKESHI: "Efficient accommodation of diverse high frequency band wireless systems using analog RoF", NTT TECHNICAL JOURNAL, vol. 32, no. 3, 1 March 2020 (2020-03-01), JP , pages 15 - 17, XP009548137, ISSN: 0915-2318
TSOKOS CHRISTOS; MYLONAS ELIAS; GROUMAS PANOS; GOUNARIDIS LEFTERIS; AVRAMOPOULOS HERCULES; KOULOUMENTAS CHRISTOS: "Optical Beamforming Network for Multi-Beam Operation With Continuous Angle Selection", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 31, no. 2, 15 January 2019 (2019-01-15), USA, pages 177 - 180, XP011705746, ISSN: 1041-1135, DOI: 10.1109/LPT.2018.2889411
ITO, KOLA; SUGA, MIZUKI; SHIRATO, YUSHI; KITA, NAOKI; ONIZAWA, TAKESHI: "Efficient accommodation of diverse high frequency band wireless systems using analog RoF", NTT TECHNICAL JOURNAL, vol. 32, no. 3, 1 March 2020 (2020-03-01), JP , pages 15 - 17, XP009548137, ISSN: 0915-2318
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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