Experimental evaluation of timing synchronization accuracy for QZSS short message synchronized SS-CDMA communication

Kei Ohya, Suguru Kameda, Hiroshi Oguma, Akinori Taira, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

We have proposed spread spectrum code division multiple access (SS-CDMA) short message communication using Quasi-Zenith Satellite System (QZSS) as a safety confirmation system at the time of great disaster. Highly accurate timing and frequency synchronization among all mobile terminals (MTs) is necessary for the synchronized SS-CDMA system to provide high density user multiplexing using long spreading codes in uplink. In order to synchronize the timing that the satellites receive uplink signals, each MT controls its own timing and frequency at the timing of each transmission using QZS and Global Positioning System (GPS) signals. Particularly the number of visible satellites can have a major impact on the time synchronization. In this paper, we evaluated the time synchronization accuracy in the synchronized SS-CDMA system experimentally. The results show that it is possible to achieve accommodation rate of short message system of 100 % when the elevation mask is 30 degrees.

Original languageEnglish
Title of host publication2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509032549
DOIs
Publication statusPublished - 2016 Dec 21
Event27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016 - Valencia, Spain
Duration: 2016 Sep 42016 Sep 8

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
CountrySpain
CityValencia
Period16/9/416/9/8

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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