차세대 차량용 무선통신(WAVE) 기술에 적합한 무선채널 모델 = Radio Channel Model Suitable for the Next Generation Wireless Access Vehicular Environment Technology

다국어 초록 (Multilingual Abstract)

In order to estimate the accuracy of system performance improvement and ensure the traffic safeties in next generation vehicular wireless communications, it is the most important thing to adopt the more accurate channel modeling for the vehicle-to-vehicle and vehicle-to-infrastructure wireless communication channels. This is the because the channel modeling is directly related to the traffic safety and its efficiency in Wireless Access in Vehicular Environment(WAVE) technology developments. In this paper, we analysed the microscopic effects of wireless propagation model which can be insisted on estimating the more accurate system performance and ensuring the traffic safety in WAVE technology. Firstly, we defined the typical conventional empirical model of the urban radio propagations, and then analysed the characteristic of data transmission and traffic safety sensitivities for the microscopic and macroscopic propagation characteristics. From the computer simulation analysis results, it can be seen that the radio channel modeling suitable for WAVE technology is to be considered with all characteristics of path loss, shadow fading, and fast fading effects.

국문 초록 (Abstract)

차세대 차량무선통신시스템의 성능개선에 대한 보다 정확한 평가나 교통의 안전성을 확보하기 위해서는, 무엇보다 중요한 것은 V2I(vehicle to infrastructure) 과 V2V(vehicle to vehicle) 무선통신 채널에 대한 보다 정확한 채널 모델링의 적용이다. 이는 차세대 차량용 무선통신기술(WAVE) 개발에 있어서 교통의 안전성과 효율성에 직결되기 때문이다. 본 논문에서는 차량용 무선통신기술에 있어서 교통의 안전성을 보장하고 그 성능을 정확히 평가할 수 있는 무선전파모델의 미시적 효과에 대하여 해석하였다. 우선 기존의 대표적인 시가지 무선전파의 경험적 모델을 정의하고, 거시적 전파특성과 미시적 전파특성에 대한 데이터 전송특성과 교통의 안전성 감지특성에 대하여 해석하였다. 컴퓨터 시뮬레이션 해석 결과, 차량용 무선통신기술에 적합한 무선전파 채널모델링은 경로손실특성, 새도우 페이딩(shadow fading), 그리고 고속 페이딩(fast fading) 효과 등을 함께 고려해야 함을 알 수 있었다.

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