• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.11 no.2
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• pp.286-293
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• 2000

This paper treats performance analysis and improvement of DSRC physical layer which is discussed for standardization at the ISO TC-204 WG-15. DSRC is a short range wireless communication for which distance is less than 100m between RSU and O BE, since DSRC requires cheap and simple modulation technique, ASK is being developed as standard modulation system among PSK, FSK and ASK in our country. This paper analyzes the performance of DSRC physical layer system which is at the first stage of development under Rician fading channel, more sepcifically, the validity of the system and the performance limitations are shown. Both equalizer and antenna diversity techniques are simulated to improve the ASK system performance.

• TTA Journal
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• s.70
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• pp.94-104
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• 2000

현재 ITS 전용 통신장치로 사용되고 있는 DSRC(Dedicated Short Range Communication) 시스템은 우선적으로 ETC(Electronic Toll Collection) 시스템에 사용되고 있으며, 여러 가지 ITS 서비스로 활용이 예상된다. 유럽과 일본, 미국에서는 이미 국가 또는 지역표준이 승인되었고, 국내에서는 초안이 완성된 단계이다. 본 고에서는 외국의 DSRC 규격에 대해 개략적인 설명을 하였다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.8 no.1
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• pp.30-36
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• 2009

Dedicated Short Range Communication (DSRC) systems in urban areas are used to collect traffic information from vehicles and to provide vehicles with information received from Roadside Equipment (RSE) having a range of 100 meters (m). However, it is not practical to use RSE with a range of 100 m for express highways. In this paper, we expand the standard cell coverage of RSE to 300 m, and adopt fixed relays to cover sites that cannot communicate with the RSE. We demonstrate that the system using the fixed relays is more economical than using only RSE.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.8A
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• pp.838-845
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• 2008

In this study, we developed a OBE(On Board Equipment) system in which moving cars communicate directly each other to exchange traffic information. this system achieved by using DSRC(Dedicated Short Range Communication). this technology can improve the fidelity of collected information by transferring current state information from a moving car to center in real time. As a consequence of it, moving cars can be offer information service of hight quality even in a shadow zone. and also, in addition to basic ETC function for toll payment, using our newly developed system, delivering traffic information and providing additive service like GPS can be achieved by car-to-car direct communication within shadow areas without additional infra-structure.

• Journal of Korea Multimedia Society
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• v.20 no.9
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• pp.1519-1526
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• 2017

The existing DSRC(Dedicated Short Range Communication) scheme has a limitation in providing various services through short-range wireless communication. Therefore, it is necessary to develop an intelligent WAVE/DSRC hybrid wireless platform that can improve data transmission speed and extend the effective communication range. This paper introduces WAVE/DSRC integrated platform technology using WAVE(Wireless Access in Vehicle Environments) to overcome the disadvantages of DSRC. First, the desinged software configuration of the WAVE/DSRC integrated platform is described. Then each task operation scheme and WAVE software design are described. By applying the WAVE/DSRC integrated platform, we can compensate the shortcomings of DSRC. It can provide more accurate and reliable services.

• Journal of Advanced Navigation Technology
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• v.4 no.2
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• pp.171-181
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• 2000

In this paper, we propose an AVLS(Automatic Vehicle Location System) using the DSRC(Dedicated Short Range Communication) which adopts a radio communication tool between RSE(Road-Side Equipment) and OBE(On-Board Equipment) on a vehicle and uses the ISM bandwidth of 5.8GHz radio frequency. Typical AVLS uses the sensors for detecting the vehicle, but the DSRC system is developed for supporting various services such as the position of vehicle, clearance, vehicle to vehicle communication, collection and distributions of traffic and road information. Also, for fast processing, we design three-layer configuration of physical(L1), data link(L2), and application layer(L7), which simplifies the seven-layer configuration. We suggest the proposed system as a new technology for replacement of typical wireless communication system and sensors for AVLS.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.4
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• pp.107-117
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• 2008

OBE(On Board Equipment) of IR(Infrared)/RF(Radio Frequence)-DSRC(Dedicated Short Range Communication) are set up 1.25 million cars because Korea Highway Cooperation supplied in HiPass(Domestic Electronic Toll Collection System). But this DSRC system has strength and weakness of service for BIS(Bus Information System) or UTIS(Urban Traffic Information System) because BIS and UTIS are required vary high communication's performance and management. In this paper, Efficiency of IR/RF-DSRC is analyzed performance of MAC(Medium Access Control) by computer simulation for services of BIS or UTIS, so Suggested to be commensurated with medium of there service. Specially, DSRC is needed high mobility and throughput in the vary short communication range, so Analysed the transmission rate of data in each communication medium over the specific character of the MAC frame.

• Proceedings of the IEEK Conference
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• 2000.06a
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• pp.232-235
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• 2000

본 논문에서는 ITS(Intelligent Transport System) 서비스를 위한 기반시설로 설치 예상되는 DSRC(Dedicated Short Range Communication) 시스템에 대하여 시스템의 개요와 특징 및 DSRC 기지국시스템의 신호흐름에 대하여 살펴보았으며, 일체형과 분리형 DSRC 시스템의 RSU구조에 관해 비교 분석하였다.

• 한국ITS학회:학술대회논문집
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• 2002.11a
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• pp.134-137
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• 2002

• Journal of Korean Society of Transportation
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• v.22 no.2 s.73
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• pp.165-175
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• 2004

본 고는 대전광역시 첨단교통모델도시 건설사업의 일환으로 구축된 DSRC(Dedicated Short Range Communication) 기술을 활용한 교통정보시스템 구축 사례를 소개함을 목적으로 한다. 공공부문에서의 구간정보 수집 및 가공 체계 구축은 본 대전 ITS 사업이 처음이며 더욱이 DSRC 기술을 구간정보 수집에 적용한 최초의 시도이다. 이에 시스템 구축과정에서 적지 않은 쟁점이 도출되었고, 많은 시행착오를 통해 그 해법을 찾아가며 현재 운영중인 시스템을 완공하게 되었다. 노변기지국(RSE)과 차량장치(OBE)간의 통신에 의해 수집된 자료는, 필터링, 검지기 지점정보, 패턴데이터 등과의 자료합성, 평활화, 통계정보 및 패턴정보 생성 등의 과정을 거쳐 구간소통정보가 산출된다. 현재 운영중인 본 시스템은 향후 지속적으로 보완 발전시켜 나가야 하며, 이를 위해 프로브 수집체계 보완, 시스템의 성능평가, 패턴데이터의 적절한 유지관리, 알고리즘의 지속적 발전 등을 향후과제로서 제시하였다. 본 고는 ITS사업에 있어 중요 쟁점중에 한 분야인 소통정보의 가공 절차를 공유함으로써, 관련 분야의 기술개발 촉진과 향후 유사시스템 구축의 시행착오를 줄이는데 기여할 수 있으리라 판단된다.