Title:
SYSTEM AND METHOD FOR PHOTONIC DISTRIBUTION OF MICROWAVE FREQUENCY ELECTRICAL SIGNAL FOR DISTRIBUTED MICROWAVE MIMO COMMUNICATIONS
Document Type and Number:
WIPO Patent Application WO/2019/141206
Kind Code:
A1
Abstract:
A microwave transmit system is provided that makes use of optical fiber to convey a microwave frequency source. A local oscillator produces a microwave frequency source in electrical form. A directly modulated laser receives the first microwave frequency source and produces an optical signal. An optical fiber is used to convey the optical signal from the laser to a photodetector. The photodetector receives a first component of the optical signal and converts the first component of the optical signal to a second microwave frequency source in electrical form. A microwave modulator performs microwave modulation using the second microwave frequency source, and a microwave antenna configured to transmit an output of the first microwave modulator. For MIMO operation, there can be a second microwave modulator. The microwave frequency source can also be conveyed to the second microwave modulator using optical fiber, or the source can be proximate to one of the two microwave modulators, and conveyed to the other of the two microwave modulators using optical fiber.
Inventors:
AHARONY AHIKAM (CA)
KLEIN SHAUL (CA)
KLEIN SHAUL (CA)
Application Number:
PCT/CN2019/072104
Publication Date:
July 25, 2019
Filing Date:
January 17, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B10/50
Foreign References:
| CN103684618A | 2014-03-26 | |||
| CN105978630A | 2016-09-28 | |||
| CN104467976A | 2015-03-25 | |||
| US201815875065A | 2018-01-19 | |||
| US20170093495A1 | 2017-03-30 |
Other References:
LIM C ET AL.: "JOURNAL OF LIGHTWAVE TECHNOLOGY", vol. 18, 1 October 2000, IEEE, article "Millimeter-wave broad-band fiber-wireless system incorporating baseband data transmission over fiber and remote LO delivery", pages: 1355 - 1363
RAO LAN ET AL.: "CLEO", 9 June 2013, THE OPTICAL SOCIETY, article "A novel full-duplex 60-GHz radio-over-fiber transmission system for next-generation wireless access networks", pages: 1 - 2
See also references of EP 3738226A4
RAO LAN ET AL.: "CLEO", 9 June 2013, THE OPTICAL SOCIETY, article "A novel full-duplex 60-GHz radio-over-fiber transmission system for next-generation wireless access networks", pages: 1 - 2
See also references of EP 3738226A4
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