CDPD

the cdpd system has a complex media access control ( mac) layer in order to make full use of mobile channels.

为了很好地利用移动信道，CDPD系统有一个功能复杂的MAC（媒质接入控制）层。

cellular digital packet data (cdpd) - minimum performance standards for cdpd mobile data base stations

蜂窝数字数据包（CDPD）.移动数据站的最低性能标准

advanced public transportation system based on dsrc and cdpd

基于DSRC和CDPD的先进公交系统

street lamps real time monitoring system scheme based on cdpd wireless network

基于CDPD无线网络的城市路灯实时监控系统方案

CDPD is a new kind of mobile wireless data communication technology.

蜂窝数字分组数据通信网(CDPD)是新一代移动无线数据通信技术.

Compared with those systems which use CDMA, GPRS or CDPD for wireless data transmitting, our system costs lower, does not require network usage charges, and can easily be expanded.

相比于采用CDMA、GPRS或CDPD等无线通信方式的智能公交系统，系统构建成本低，无须缴纳网络使用费，且能够方便地进行业务扩展。