0.7-GHz-Bandwidth DS-UWB-IR System for Low-Power Wireless Communications

Ryosuke FUJIWARA  Akira MAEKI  Kenichi MIZUGAKI  Goichi ONO  Tatsuo NAKAGAWA  Takayasu NORIMATSU  Masaru KOKUBO  Masayuki MIYAZAKI  Yasuyuki OKUMA  Miki HAYAKAWA  Shinsuke KOBAYASHI  Noboru KOSHIZUKA  Ken SAKAMURA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.2   pp.518-526
Publication Date: 2008/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.2.518
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
impulse radio,  LR-WPAN,  UWB,  wireless sensor networks,  

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Summary: 
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.