The prosperity of internet has impelled the explosive increase of data communication all over the world . as data service becomes the main part of network , ip based communication framework becomes the leading technology of information communication Internet的蓬勃发展促使全世界的数据通信业务爆炸性的增长,随着网络中数据业务量成为主导后,以ip交换为基础的通信网框架成为信息通信的主导技术。
The videos , voices , data combined traffic and high speed data are becoming more and more predominent in the future , and how to efficiently transfer this multi - medium integrated - data is one of the researcher ' s interesting field . the cdma system , which has striking advantages of anti - multipath fading , soft capacities and large capacities over fdma and tdma systems , has been focused by all of the countries 未来信息社会中,图象,话音,数据相结合的多媒体业务和高速数据业务量越来越占主要地位,如何有效地传输这种多媒体数据,已经成为移动通信中的研究热点之一。扩频技术由于具有抗多径,软容量和时分多址与频分多址更大的容量和优势,而受到各国研究者的重视。
数据: data; record; information业务: vocational work; professiona ...量: measure capacity大数据业务: bds big data servic短数据业务: short data service数据业务: data business; data service单位数据业务: udts unit data service等时数据业务: ids isochronous data services广域数据业务: wide area data service话音数据业务: voice data service宽域数据业务: wide area data service数据业务单元: dsu data service unit数据业务设备: data service unit数字数据业务: digital data service dds图像数据业务: viewdata service无线数据业务: wireless data service移动数据业务: mobile data service异步数据业务: ads asynchronous data service增值数据业务: vads value-added data service按键式数据业务: touch tone data service大范围数据业务: wads反向数据业务信道: rdtc分组交换数据业务: psds packet switched data service分组数据业务信道: pdtch packet data traffic channel公众移动数据业务: public mobile data services