A NEW ROBUST, HIGH DATARATE, DIGITAL FM SUBCARRIER SYSTEM FOR MOBILE (IVHS) APPLICATIONS

By far the largest volume of data that needs to be transferred from the infrastructure to mobile users concerns the state of congestion on highways. Since this can be done in a one-way broadcast mode, significant savings in communications cost and radio-frequency (RF) spectrum acquisition time can be achieved if an existing, widely available medium is used. For ITS purposes, analog subcarriers have neither the capacity nor the robustness in a mobile environment to perform traffic data distribution. What is needed is a true digital subcarrier system that has enough capacity to reliably distribute traffic data with low latency in a mobile environment. This paper describes the design, development and testing of a new high-speed digital subcarrier system (HSDSS) called the Subcarrier Traffic Information Channel (STIC). STIC provides a digital data capability that performs extremely well in a multipath, fading environment and yields a user data rate of more than 7 kilobits per second (kb/s). Another important feature of the system is that it provides all of this capability from a single FM station - a critical factor for US ITS deployment. (a) For the covering entry of this conference, see IRRD abstract 868345.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 47-64

Subject/Index Terms

Filing Info

  • Accession Number: 00722224
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • ISBN: 0-86910-663-5
  • Files: ITRD, ATRI
  • Created Date: Jun 28 1996 12:00AM