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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