Title:
OAM MULTIPLEXED COMMUNICATION SYSTEM AND INTER-MODE INTERFERENCE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/189705
Kind Code:
A1
Abstract:
This OAM multiplexed communication system uses one or more OAM modes, performs multiplex transmission on one or more sequences of signals for each OAM mode, and is provided with: a transmission station provided with transmission antennas using M-UCAs and an OAM mode generation means for simultaneously generating one or more OAM modes from each UCA; and a receiving station provided with receiving antennas having the same configuration as the M-UCAs, an OAM mode separation means for separating, for each OAM mode, signals received by each UCA, and a received signal processing means for estimating channel information for each OAM mode and performing an equalization process for each OAM mode by using reception weights calculated from the channel information, wherein, for each OAM mode, the received signal processing means also estimates channel information on another OAM mode that receives interference and calculates a reception weight of an own OAM mode by using the channel information on the own OAM mode and the other OAM mode.
Inventors:
SASAKI HIROFUMI (JP)
LEE DOOHWAN (JP)
FUKUMOTO HIROYUKI (JP)
SHIBA HIROYUKI (JP)
LEE DOOHWAN (JP)
FUKUMOTO HIROYUKI (JP)
SHIBA HIROYUKI (JP)
Application Number:
PCT/JP2019/013895
Publication Date:
October 03, 2019
Filing Date:
March 28, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04J99/00; H01Q21/20; H04B7/0413
Domestic Patent References:
| WO2017213219A1 | 2017-12-14 |
Other References:
CHEN, RUI ET AL.: "Misalignment-Robust Receiving Scheme for UCA-Based OAM Communication Systems", 2017 IEEE 85TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), 7 June 2017 (2017-06-07), XP033254425
JING, HAIYUE ET AL.: "Concentric UCAs based low- order radio vortex wireless communications with co-mode interference", 2017 IEEE /CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC), 24 October 2017 (2017-10-24), XP055638860
SHIN, DONGWOO ET AL.: "Identification of Non- Ideal Receiver Condition for Orbital Angular Momentum Transmission", 2014 IEEE 79TH VEHICULAR TECHNOLOGY CONFERENCE (VIC SPRING, 21 May 2014 (2014-05-21), XP055638872
ZHNAG, YAN ET AL.: "Performance analysis of an OAM multiplexing-based MIMO FSO system over atmospheric turbulence using space-time coding with channel estimation", OPTICS EXPRESS, vol. 25, no. 17, 21 August 2017 (2017-08-21), pages 19995 - 20011, XP055638877
E. SASAKIM. HIRABET. MARUN. ZEIN: "Pragmatic OAM with polarization multiplexing transmission for future 5G ultra-high capacity radio", EUMA2016, October 2016 (2016-10-01)
JING, HAIYUE ET AL.: "Concentric UCAs based low- order radio vortex wireless communications with co-mode interference", 2017 IEEE /CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC), 24 October 2017 (2017-10-24), XP055638860
SHIN, DONGWOO ET AL.: "Identification of Non- Ideal Receiver Condition for Orbital Angular Momentum Transmission", 2014 IEEE 79TH VEHICULAR TECHNOLOGY CONFERENCE (VIC SPRING, 21 May 2014 (2014-05-21), XP055638872
ZHNAG, YAN ET AL.: "Performance analysis of an OAM multiplexing-based MIMO FSO system over atmospheric turbulence using space-time coding with channel estimation", OPTICS EXPRESS, vol. 25, no. 17, 21 August 2017 (2017-08-21), pages 19995 - 20011, XP055638877
E. SASAKIM. HIRABET. MARUN. ZEIN: "Pragmatic OAM with polarization multiplexing transmission for future 5G ultra-high capacity radio", EUMA2016, October 2016 (2016-10-01)
Attorney, Agent or Firm:
FURUYA, Fumio et al. (JP)
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