一、主要承载技术GPRS 二、短消息业务

一、切换功能 二、漫游功能

一,说明固定用户至移动用户的入局呼叫流程

主要内容 一、抗噪声和干扰技术 二、交织技术 三、分集技术

I. Revision mins com Teacher uses the following exercise to help the students to revise the important expressions or phrases

I. Revision Teacher uses the following exercise to help the students to revise the important expressions or phrases or sentences which were learnt in the loud speaker, study of last unit eacher: When I say a phrase or an expression in Chinese, you respond by blackboard

1. to know Cellular Mobile Telephone System Teaching 2. to understand the construction of cellular mobile telephone system Objectives

I单项选择 1.抽样频率 a. sampling rate b. repetition rate c. sampling frequency 答案:c 2.数字通信 a. digital communication b. digital transmission. transmission path 答案:a

Word13 multimedia[. mAl i''midjn.多媒体 describe[dis k]v.描述,形容 mixture['m tfan.混合,混合物 consequent['kon wan]a.作为结果的,随之发生的

NEW WORDS AND PHRASES vISIonary[ vita n ari]n.幻想家,梦想家 contribute [kan tribju]v.捐献,贡献 kan]adv.重大的,效果显著的,具有特殊意义的