1 capanina meeting at york, march 2004 possible crl (nict) contributions to capanina
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CAPANINA MEETING at York, March 2004
Possible CRL (NiCT) ContributionsPossible CRL (NiCT) Contributionsto CAPANINAto CAPANINA
2New Organization Starts on April 1, 2004
Communications Research Laboratory
Telecommunications Advancement Organization
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1. Next 3-year Plans of CRL (NiCT)2. How can CRL (NiCT) contribute to the CAP
ANINA experiments?3. Spectrum sharing study4. Sharing of experimental data already obtain
ed
OUTLINE
4Budget for FY2004 - FY2006
We succeeded in obtaining the next 3-year budget.However… this budget is for “Technology of efficient frequency use in wireless systems by array antennas with many elements”
array antenna withmany elements
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FY2004
FY2005
FY2006
1. Spatial optical link test2. Digital broadcasting in UHF band3. Direction-of-Arrival (DoA) Estimat
ion in 1.7 GHz band
experiments using low-altitude (4km)station-keeping airship
design / fabrication of new array antennas
1. Multi-beam horn (MBH) antenna with reduced volume & weight2. Digital beamforming (DBF) antenn
a capable of larger number of beams
Assumed Plans for the Next 3 years(FY2004-FY2006)
1. Broadband telecom test 2. Beamforming test of onboard MBH/DBF antennas 3. etc….
tests of the developed antennas /modification of the antennas
experiments using refurbishedPathfinder-Plus in Hawaii, Japan or elsewhere
Length: 65 m, Alt.: 4 kmHas propulsion motors
Airship
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Wing span 36.3mSpeed to the ground 98km/hour@alt. of 18kmPayload 50kg ( distributed mounting)Power available for mission 600W
Assumed Specification of Refurbished Pathfinder-Plus
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CRL’s equipment may be used in the broad bandtelecom experiments in the CAPANINA project
Existing multi-beam horn (MBH) antenna (or one element) developed for the experiment by using Helios Prototype New MBH antenna (or one element) to be developed for the experiment using refurbished Pathfinder-Plus
How can CRL (NiCT) contribute to CAPANINA on the experiments?
CAPANINA may join the experiments by using refurbished UAV Onboard equipment developed by CAPANINA or onboard equipment jointly developed by CRL/CAPANINA may
be installed on the UAV Experiments may be shared. (e.g. CRL measures the antenna
beam pattern and CAPANINA measures propagation data).
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CRL is hoping that …
HAPS systems in the 28/31GHz band for spectrum sharing study could be proposed by the CAPANINA project,
Spectrum sharing study between the HAPS systems above
and other systems (FWA, Satellite systems etc.) could be conducted,
The results could be reflected to the ITU-R Recommendations.
Spectrum Sharing Study
9Experimental Data Sharing
Conducted So Far
Experimental results will be available in the papers to be published.
Followings are being prepared for publication.
Experiments by using Pathfinder-Plus (altitude : 20 km) (Digital TV broadcasting in UHF band and IMT-2000 in 2 GHz
band)- Variation in temperature of the onboard equipment- Stability of signal power via onboard equipment
Experiments by using helicopter (altitude : 3 km) (31/28 GHz: IP-based communications up to 3.75 Mbps by using onboard DBF antenna, 47/48 GHz: Data transmission with 56 Mbps by using onboard
MBH antennas)
- Experimental system - Antenna beam patterns - Results of communication trials
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Time: Sep-Nov, 2004 (tentative)Place: Taiki Multi-Purpose Aerospac
e Park in Hokkaido
Test Items:1. Spatial optical link test -for broadband inter-platform link2. Digital broadcasting in UHF
-Evaluation of UHF service coverage and quality in mobile and fixed environment
Optical transmitting station
Mobile station
Backup stationTTC station
Receive station
Optical uplink
2 GHzTTC
Broadcasting in UHF
Uplink backup in 2 GHz
Length: 65 m, Alt.: 4 kmHas propulsion motors
Test Plan in This YearUsing the Low-Altitude Station-Keeping Airship
Laser tracking
Wide-coverage antenna
Evaluation of
mobile reception
Evaluation of service
coverage
Optical transmission
of RF signals
Airship
Off-the-shelf receiver
11Test Plan in This Year
Using the Low-Altitude Station-Keeping Airship
Hokkaido
Multi-purpose Park
Runway
Operation TowerTaiki-cho
Fall 2004 by JAXA・ NICT
Airship Shed
Operation Building
12Airship Shed in Hokkaido
13Developing Airship in the Shed
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