Copyright © 2008 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Papers -- Wireless Communication Technologies |
0.7-GHz-Bandwidth DS-UWB-IR System for Low-Power Wireless Communications
1 The authors are with Hitachi, Ltd., Kokubunji-shi, 185-8601 Japan. E-mail: ryosuke.fujiwara.mb{at}hitachi.com, 2 The authors are with YRP Ubiquitous Networking Lab., Tokyo, 141-0031 Japan.
A direct-sequence ultra-wideband impulse radio (DS-UWB-IR) system is developed for low-power wireless applications such as wireless sensor networks. This system adopts impulse radio characterized by a low duty cycle, and a direct-sequence 0.7-GHz bandwidth, which enables low-power operation and extremely precise positioning. Simulation results reveal that the system achieves a 250-kbps data rate for 30-m-distance wireless communications using realistic specifications. We also conduct an experiment that confirms the feasibility of our system.
Key Words: impulse radio, LR-WPAN, UWB, wireless sensor networks
Manuscript received February 27, 2007. Manuscript revised August 21, 2007.
Reference
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