Chirp Spread Spectrum Transceiver Design and Implementation for Real Time Locating System

A chirp spread spectrum (CSS) transceiver architecture for IEEE 802.15.4a is proposed and implemented. In the transmitter, the size of the read-only memory that stores CSS signal samples for the chirp modulator is reduced by removing duplicate samples among subchirps. In the receiver, a matched filt...

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Bibliographic Details
Published inInternational journal of distributed sensor networks Vol. 2015; no. 8; p. 572861
Main Authors Kim, Sangdeok, Chong, Jong-Wha
Format Journal Article
LanguageEnglish
Published London, England Hindawi Publishing Corporation 01.01.2015
SAGE Publications
Sage Publications Ltd. (UK)
Sage Publications Ltd
Wiley
Subjects
Access control
Architecture
Chirp
Design and construction
Engineering research
Field programmable gate arrays
Location-based systems
Matched filters
Networks
Noise
Real-time control
Real-time systems
Reproduction
Sensors
Spread spectrum
Spread spectrum communications
Spreads
Stores
Transceivers
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Summary:A chirp spread spectrum (CSS) transceiver architecture for IEEE 802.15.4a is proposed and implemented. In the transmitter, the size of the read-only memory that stores CSS signal samples for the chirp modulator is reduced by removing duplicate samples among subchirps. In the receiver, a matched filter is utilized to remove the other band noise caused by the band hopping property of CSS. A robust time synchronizer and chirp demodulator based on the matched filter are proposed. Low complexity architectures of the matched filter and biorthogonal decoder are also proposed. All of the proposed architectures are implemented in the field-programmable gate array chip and verified.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1550-1329
1550-1477
1550-1477
DOI:10.1155/2015/572861