TY  - JOUR
PY  - 1993//
TI  - Communications architecture for early implementation of intelligent vehicle highway systems
JO  - Transportation research record
A1  - Chadwick, D. J.
A1  - Patel, V. M.
A1  - Saxton, L. G.
SP  - 101
EP  - 107
VL  - 1408
IS  - 
N2  - Communications--wireless communications in particular--is a critical component of intelligent vehicle highway systems (IVHS). It is costly when viewed from two different angles: first, its dependence on using the scarce natural resources called radio frequency (RF) spectrum, and second, the actual cost of implementing the necessary infrastructure and the required (in-vehicle) user equipment. On the other hand, it is imperative, for the success of the national IVHS program, to plan a near-term IVHS architectural implementation to show positive first-user benefits. Bearing in mind the above constraints, it is natural to think of designing an IVHS communications architecture that makes use of existing infrastructures for other communications services. This strategy enables more efficient use of the RF spectrum while it reduces the total cost of services by sharing the communications infrastructure and end-user equipment. A communications architecture and end-user equipment. A communications architecture is proposed for IVHS called the Subsidiary Communications Authority Traffic Information Channel (STIC), based on the widely available FM radio broadcast services' infrastructures by making use of FM subcarrier technology. This preliminary design also shows that STIC has a higher data transmission capacity than any other existing FM subcarrier broadcast system and that it has the potential to meet the one-way outbound (broadcast) data transmission capacity needs of IVHS for the next few years. In addition, STIC architecture is capable of being scaled up in the future.       Record URL:         http://onlinepubs.trb.org/Onlinepubs/trr/1993/1408/1408-013.pdf<p /> <p>Language: en</p>
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/
ID  - ref1
ER  -