...数字移动通信，车辆无线通信。 [gap=490]Key Words: Intelligent Transportation System, Wireless Data Communication, Digital Mobile Communication, Vehicle Communication System.
The DS/CDMA digitalmobilecommunication system is based on Spread-spectrum technique and CDMA technique.
扩频技术在码分多址通信中的应用产生了DS/CDMA数字蜂窝移动通信系统。
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In the digitalmobilecommunication, with the effect of modulation, transmission channels and demodulation, the received signal ineluctably has some distortion.
Introduce the technology of cell broadcast service in the GSM digitalmobilecommunication system as well as its service application and future development prospect.