摘要
本文先简要介绍常见的移动数据通信技术:GPRS、CDPD和HSCSD,最后将GPRS与CDPD和HSCSD技术进行简单的比较。
In this paper, three mobile data communication systems areintroduced. They are GPRS,CDPD and HSCSD. We compare GPRSwith CDPD,and then compare GPRS with HSCSD. From the comparions,we can know that GPRS is more efficient than other systems in frequency,and the important step for turning the second communication system intothe third communication system.
出处
《现代电视技术》
2003年第2期95-99,共5页
Advanced Television Engineering
