文件名称：Understanding Automotive Electronics 8th - Chapter 9
文件大小：1.19MB
文件格式：PDF
更新时间：2021-04-02 13:07:24
汽车电子
Communication with vehicles (while moving) began with the introduction of AM radio receivers in the 1930s. In this same general era, two-way radio communication via radio was used by law enforcement agencies. The evolution of civilian two-way radio communications advanced relatively slowly until the introduction of cellular phones. Initially, they were often referred to as bag phones since they were relatively bulky and packages in bags. The early cellular phones (now just called cell phones) had telephone-type handsets. It is widely known that the advances in cell phone technology have been very rapid. It is also well known that cell phone communication requires an infrastructure of multiple cell phone transceiver stations (called cell towers). Other wireless communications between moving vehicles and multiple fixed or moving (i.e., satellite) transceivers are developing and have been developed. In this chapter, we refer to such communication as vehicle to infrastructure (often abbreviated as (V2I)).