Evaluation of Transmission Timing Control Error for QZSS Short Message SS-CDMA Communication System

Hiroshi Oguma, Rei Kawai, Suguru Kameda, Noriharu Suematsu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

We have proposed a short message communication system using the Quasi-Zenith Satellite System (QZSS), which can be used as a safety confirmation system in the event of a disaster. Since the proposed system uses the accurate time and position information obtained from the QZSS to control the transmission timing, it is important to evaluate the time synchronization accuracy to realize the system. We construct a transmission timing control error evaluation system using FPGA, and measure and evaluate it. The clock frequency error is estimated to be within 5 ppm when the clock frequency is 100 MHz, while the delay is around 6 ms, which corresponds to the maximum transmission control time under the assumed environment. These results indicate that the timing control accuracy is sufficient to realize the proposed system.

Original languageEnglish
Title of host publicationICUFN 2022 - 13th International Conference on Ubiquitous and Future Networks
PublisherIEEE Computer Society
Pages29-34
Number of pages6
ISBN (Electronic)9781665485500
DOIs
Publication statusPublished - 2022
Event13th International Conference on Ubiquitous and Future Networks, ICUFN 2022 - Virtual, Barcelona, Spain
Duration: 2022 Jul 52022 Jul 8

Publication series

NameInternational Conference on Ubiquitous and Future Networks, ICUFN
Volume2022-July
ISSN (Print)2165-8528
ISSN (Electronic)2165-8536

Conference

Conference13th International Conference on Ubiquitous and Future Networks, ICUFN 2022
Country/TerritorySpain
CityVirtual, Barcelona
Period22/7/522/7/8

Keywords

  • Code-Division Multiple-Access (CDMA)
  • Field Programmable Gate Array (FPGA)
  • Global Positioning System (GPS)
  • Quasi-Zenith Satellite System (QZSS)
  • Satellite Communication
  • Spread Spectrum (SS)

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