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실내 무선측위/통신을 위한 IEEE 802.15.4a IR-UWB 시스템 설계
오미경,박주호,오정열,길민수,김재영,Oh, Mi-Kyung,Park, Joo-Ho,Oh, Jung-Yeol,Kil, Min-Su,Kim, Jae-Young 대한임베디드공학회 2009 대한임베디드공학회논문지 Vol.4 No.1
This paper aims at designing an impulse-radio ultra-wideband (IR-UWB) transceiver, especially targeting the IEEE 802.15.4a indoor ranging and communication systems. We first investigate the IEEE 802.15.4a IR-UWB signals and suggest the full-digital transceiver architecture accordingly. Since the wireless systems equipped with the impulse signal have the property of low-duty cycle, i.e., discontinuity in time, while the conventional systems takes the continuous signals, it is required to reconfigure the system design, including link budget. Following brief introduction to our IEEE 802.15.4a IR-UWB system hardware, we finally examine the ranging performance in indoor environments to verify our system design.
박주호,오미경,오정열,길민수,김재영,Park, Joo-Ho,Oh, Mi-Kyung,Oh, Jung-Yeol,Kil, Min-Su,Kim, Jae-Young 대한임베디드공학회 2009 대한임베디드공학회논문지 Vol.4 No.1
In this paper, we design RF transceiver architecture and building blocks for impulse radio UWB system. Impulse radio UWB signal occupies the wide frequency band which is very low transmission power. So, it can minimize the interference effect with the other system. Using UWB technology, we obtain position awareness service. Therefore, we describe the RF transceiver architecture of direct conversion receiver and define the requirement of RF transceiver. Moreover, we implement a prototype RF transceiver based on the presented standard and verify a function and performance through the wireless data communication and ranging test.
개인 무선 통신을 위한 868/915MHz SoC 시스템 구조 설계
박주호,오정열,고영준,길민수,김재영 대한임베디드공학회 2007 대한임베디드공학회논문지 Vol.2 No.1
According to development of wireless communication technologies, we need not only high data rate but low data rate system of low power consumption. This low data rate system is utilized in the field of home automation, health care, sensoring and monitoring, etc. IEEE 802.15.4 LR-WPAN system is the best choice for realizing ubiquitous networking system. In this paper SoC Architecture for IEEE 802.15.4 Low Rate WPAN is designed. IEEE 802.15.4 Low Rate WPAN system serves the functions and realization of home area network. We propose the SoC architecture for 868/915MHz frequency band of IEEE 802.15.4 Low Rate WPAN system. The key issue is to design SoC architecture which provides the function of Low Rate WPAN system to meet the requirement of IEEE 802.15.4 standards.