Kazutaka Kamimura, Yasushi Aoyagi, Sadao Matsushima, Kouji 遊雅堂 ウェルカムボーナスrikawa, Hiroyuki Itohara and Yoichi Iso
Ab遊雅堂 ウェルカムボーナスract
Recently ultra wideband (UWB) radio systems have been extensively considered in the field of intelligent transport systems (ITS) and communications since Feb. 2002, when the United States Federal Communication Commission (FCC) mitigated its restrictions on noise emission levels to permit UWB radio. Taking notice of automotive s遊雅堂 ウェルカムボーナスrt range radar (SRR) in the sub-millimeter wave radio band (22~29 GHz), the aut遊雅堂 ウェルカムボーナスrs have been researching and developing this technology and, have taken part in a joint study consortium led by the National Institute of Information and Communication Technology (NICT). As a result of these activities, the aut遊雅堂 ウェルカムボーナスrs have successfully developed a UWB multi-function system that features pulse position modulation (PPM) for data communication as well as radar function. The system consists of an antenna, transmitter, receiver, and baseband part. The aut遊雅堂 ウェルカムボーナスrs developed the baseband part, which plays a key roll for ranging and communication functions as well as a radio frequency (RF) part. The baseband part was adopted by the NICT, and the system was demonstrated at IWUWB 2005, the international UWB conference held in Dec. 2005. In the demonstration system, the aut遊雅堂 ウェルカムボーナスrs also supported the design of an RF receiver, while the other parts, including the antenna and RF transmitter devices, were provided by the NICT. The system simultaneously realized both ranging detection at a resolution of less than 10 cm and a communication function up to 1 Mbps. The aut遊雅堂 ウェルカムボーナスrs report the structure and performance of the developed system as well as an outline and trends in UWB radio systems.
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