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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SR, AN, USN, RCS (Joint) |
2012-10-17 11:15 |
Fukuoka | Fukuoka univ. | Distributed sensing system for TVWS
-- Part 1: System design and performance of each sensor -- Ha Nguyen Tran, Yohannes D. Alemseged, Hiroshi Harada (NICT)  SR2012-42 |
[more] | SR2012-42 pp.41-46 |
| SR, AN, USN, RCS (Joint) |
2012-10-17 11:40 |
Fukuoka | Fukuoka univ. | Distributed sensing system for TVWS
-- Part 2: Performance of different cooperative sensing algorithms -- Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT) SR2012-43 |
[more] | SR2012-43 pp.47-52 |
| SR, RCS, SRW (Joint) |
2012-03-07 10:15 |
Kanagawa | YRP | Status report on regulation and standardization for TV white space wireless communication systems in the world Hiroshi Harada, Homare Murakami, Yohannes D. Alemseged, Chen Sun, Tuncer Baykas (NICT) SR2011-108 |
[more] | SR2011-108 pp.25-32 |
| SR | 2012-01-27 14:00 |
Kagoshima | Kagoshima | Coexistence of TVWS Secondary Networks via Optimum and Sub-optimum Power Selection Strategies Yohannes D. Alemseged, Gabriel Porto Villardi, Chen Sun, Ha-Nguyen Tran, Hiroshi Harada (NICT) SR2011-98 |
As a recent developments, radio regulatory bodies are introducing flexible use of spectrum such as allowing the use of t... [more] | SR2011-98 pp.119-124 |
| SR | 2012-01-27 14:50 |
Kagoshima | Kagoshima | Available channels determination and white space DB query method Ha Nguyen Tran, Yohannes D. Alemseged, Chen Sun, Hiroshi Harada (NICT) SR2011-100 |
[more] | SR2011-100 pp.131-138 |
| SR | 2012-01-27 15:30 |
Kagoshima | Kagoshima | Coexistence of Secondary User Networks under Primary User Constraints in TV White Space Chen Sun, Gabriel Porto Villardi, Zhou Lan, Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT) SR2011-101 |
[more] | SR2011-101 pp.139-145 |
| SR | 2011-04-22 11:25 |
Shimane | Matsue Terrsa | Television White Space (TVWS) Geo-Location Database Access by Personal Portable Device Yohannes D. Alemseged, Chen Sun, Zhou Lan, Sum Chin Sean, Ha Nguyen Tran, Gabriel Villardi, Hiroshi Harada (NICT) SR2011-12 |
Cognitive radio system (CRS) that dynamically access radio spectrum based on the availability of unoccupied spectrum has... [more] | SR2011-12 pp.71-75 |
| SR | 2011-04-22 11:50 |
Shimane | Matsue Terrsa | On the Evaluation of the Control Mechanism for Client Devices in P802.11af Chen Sun, Zhou Lan, Yohannes D. Alemseged, Ha Nguyen Tran, Chin Sean Sum, Gabriel Villardi, Hiroshi Harada (NICT) SR2011-13 |
Spectrum scarcity has become one of the limiting factors of the evolution of wireless communication systems to incorpora... [more] | SR2011-13 pp.77-81 |
| SR | 2011-04-22 15:05 |
Shimane | Matsue Terrsa | IEEE 802.11af Standardization Activities:TV White Space Security Issues Chin-Sean Sum, Zhou Lan, Chen Sun, Yohannes D. Alemseged, Ha Nguyen Tran, Gabriel Porto Villardi, Hiroshi Harada (NICT) SR2011-16 |
IEEE 802.11af is the IEEE task group (TG) responsible for specifying the physical (PHY) and medium access control (MAC) ... [more] | SR2011-16 pp.91-96 |
| SR | 2011-04-22 15:30 |
Shimane | Matsue Terrsa | On the Efficiency of Dynamic Frequency Selection Based Coexistence Mechanisms for TV White Space Enabled Cognitive Networks in Japan Gabriel Porto Villardi, Chin-Sean Sum, Chen Sun, Yohannes D. Alemseged, Zhou Lan, Hiroshi Harada (NICT) SR2011-17 |
[more] | SR2011-17 pp.97-103 |
| SR | 2010-07-29 15:00 |
Kyoto | ATR (Kyoto) | Coexistence Among Secondary Networks In TVWS Yohannes D. Alemseged, Tuncer Baykas, Ha Nguyen Tran, Chen Sun, Hiroshi Harada (NICT) SR2010-22 |
Temporarily unused frequency bands in the VHF and UHF bands are considered for use on unlicensed basis. The term primary... [more] | SR2010-22 pp.39-44 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 15:50 |
Kanagawa | YRP | Whitespace sensing database for cognitive radio systems Ha Nguyen Tran, Yohannes D. Alemseged, Chen Sun, Hiroshi Harada (NICT) SR2009-99 |
[more] | SR2009-99 pp.59-65 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 16:20 |
Kanagawa | YRP | Coexistence Manager of Heterogeneous TVWS Networks Chen Sun, Ha Nguyen Tran, Yohannes D. Alemseged, Hiroshi Harada (NICT) SR2009-100 |
This paper address the coexistence issue of cognitive radio system (CRS). In particular we focus on the coexistence of s... [more] | SR2009-100 pp.67-71 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 16:40 |
Kanagawa | YRP | Optimization of Transmit Power and Time Slot for Multiple Secondary Users in Cognitive Radio System Chen Sun, Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT) SR2009-101 |
This paper addresses the issues of coexistence for cognitive radio networks. The coexistence consideredinclude the coexi... [more] | SR2009-101 pp.73-78 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-03 17:00 |
Kanagawa | YRP | A Study on Media Access Scheme for Distributed Spectrum Sensing Yohannes D. Alemseged, Ha Nguyen Tran, Chen Sun, Hiroshi Harada (NICT) SR2009-102 |
[more] | SR2009-102 pp.79-84 |
| SR | 2010-01-22 13:25 |
Tokyo | Univ. of Electro-Communications | On the Coexistence of Cognitive Radio Systems Chen Sun, Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT) SR2009-87 |
In this paper, we study the coexistence issue of cognitive radio system (CRS) including selfcoexistence among secondary ... [more] | SR2009-87 pp.87-91 |
| SR, AN, USN (Joint) |
2009-10-22 11:10 |
Miyagi | Tohoku Univ. | On the Investigation of MAC Protocols for Distributed Sensing Chen Sun, Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT) SR2009-55 |
In our previous study we have compared the selective sensing scheme with the collaborative sensing scheme in the physica... [more] | SR2009-55 pp.27-31 |
| RCS | 2009-10-16 14:15 |
Kyoto | ATR | Cross Layer Approach of Distributed Spectrum Sensing Yohannes D. Alemseged, Chen Sun, Ha Nguyen Tran, Gabriel Porto Villardi, Hiroshi Harada (NICT) RCS2009-129 |
[more] | RCS2009-129 pp.111-115 |
| SR | 2009-07-29 13:00 |
Tokyo | Tokyo institute of technology | [Technology Exhibit]
Prototype of Heterogeneous Type Cognitive Radio System Kentaro Ishizu, Homare Murakami, Goh Miyamoto, Stanislav Filin, Ha Nguyen Tran, Chen Sun, Yohannes D. Alemseged, Hiroshi Harada (NICT) SR2009-29 |
This paper describes a heterogeneous type cognitive radio system that has been developed by NICT. This system conforms t... [more] | SR2009-29 pp.43-50 |
| SR | 2009-07-29 13:00 |
Tokyo | Tokyo institute of technology | [Technology Exhibit]
Prototype of Spectrum Sharing Type Cognitive Base Station Kentaro Ishizu, Homare Murakami, Goh Miyamoto, Stanislav Filin, Ha Nguyen Tran, Chen Sun, Yohannes D. Alemseged, Hiroshi Harada (NICT) SR2009-30 |
This paper introduces a spectrum sharing type cognitive radio system that NICT has developed. This system is composed of... [more] | SR2009-30 pp.51-56 |
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