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협동 다이버시티를 채택한 무선 애드혹 네트워크에서 전력 증폭기의 효율이 시스템 수신율에 미치는 영향
이광렬,김남수 청주대학교 산업과학연구소 2009 産業科學硏究 Vol.26 No.2
This paper is considered effect of the efficiency of power amplifiers to ad-hoc wireless networks with cooperative diversity system. The efficiency of a power amplifier is affected by the internal thermal power consumption of the amplifier. We analyse the effect of the efficiency of a power amplifier to the outage probability of ad-hoc wireless networks. It shows that the required SNRs are 16 dB, 12 dB, 10 dB, and 9 dB with the efficiency of 20 %, 50 %, 80 %, and 100 %, respectively, at the outage probability of . We noticed that the power gain increases non-linearly with the efficiency of the power amplifier.
시뮬레이션을 통한 항공화물 네트워크 수익관리 모형 성능 평가
이광렬,윤수정,이철웅,Lee, Kwang-Ryul,Yoon, Soo-Jeong,Lee, Chul-Ung 한국시뮬레이션학회 2009 한국시뮬레이션학회 논문지 Vol.18 No.1
A discrete event simulation model is developed to evaluate the performances of three different revenue management methods for an air cargo network from Northeast China to North America and Europe. In the first method, a bid price model is applied only to the routes that pass through Incheon. In the second method, the bid price model is applied to all the routes. In third method, bid price and virtual nesting models are applied to the routes that pass through Incheon. The results show that the total revenue significantly increases with the employment of pricing and capacity control. The developed simulation model is a useful research tool to study marketing strategies for air cargo operations.