TY - GEN
T1 - Evaluation of Transmission Timing Control Error for QZSS Short Message SS-CDMA Communication System
AU - Oguma, Hiroshi
AU - Kawai, Rei
AU - Kameda, Suguru
AU - Suematsu, Noriharu
N1 - Funding Information:
A part of this work is supported by JSPS KAKENHI Grant Number JP JP16KK0139 and 21H01319.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - Code-Division Multiple-Access (CDMA)
KW - Field Programmable Gate Array (FPGA)
KW - Global Positioning System (GPS)
KW - Quasi-Zenith Satellite System (QZSS)
KW - Satellite Communication
KW - Spread Spectrum (SS)
UR - http://www.scopus.com/inward/record.url?scp=85135247019&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85135247019&partnerID=8YFLogxK
U2 - 10.1109/ICUFN55119.2022.9829615
DO - 10.1109/ICUFN55119.2022.9829615
M3 - Conference contribution
AN - SCOPUS:85135247019
T3 - International Conference on Ubiquitous and Future Networks, ICUFN
SP - 29
EP - 34
BT - ICUFN 2022 - 13th International Conference on Ubiquitous and Future Networks
PB - IEEE Computer Society
T2 - 13th International Conference on Ubiquitous and Future Networks, ICUFN 2022
Y2 - 5 July 2022 through 8 July 2022
ER -