The meat of the backbone

Several particular system design problems are discussed, in connection with the design of "backbone" type vehicular communications systems. No attempt is made to cover the overall problems of communications system design. This paper deals with some of the problems that are peculiar to "backbone" systems. In particular, this paper discusses the variables effecting the size and seriousness of phasing areas between adjacent base stations, and methods of dealing with the problem. A method of automatic receiver selection, or "voting", is described, and overall control methods are discussed.