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.