3.9 Time-Division Multiplexing Definition. Time-division multiplexing (TDM) is the time interleaving of samples from several sources so that the information from these sources can be transmitted serially over a single communication channel

Introduction (chapter objectives) Power spectral density Matched filters Recall former Chapter that random signals are used to convey information. Noise is also described in terms of statistics. Thus, knowledge of random signals and noise is fundamental to an understanding of communication systems

The telemetry, tracking and control subsystem provides vital communication to and from the spacecraft TT&c is the only way to observe and to control the spacecraft's functions and condition from the ground October 29 2003 Massachusetts Institute of Technology

I Pre-Reading Task How much do you know about the Internet? 2. What do people usually do on the Internet 3. What has made the Internet possible?

The nature of language A definition: Language is human speech; the ability to communicate by this means; a system of vocal sounds and combinations of such sounds to which meaning is attributed, used for the expression or communication of thoughts and feelings; the written representation of such a system. (Webster's New World Dictionary)

Transport layer protocol is to reate a process-to-process communication Provide control mechanisms Provide a connection mechanism for the processes

How applications become clients by initiating communication How applications use TCP or UDP protocols to contact a server How they use socket calls to interact with the protocols CSIE, NTUT, Taiwan

CONTENTS CONNECTIONS COMMUNICATION COMMAND PROCESSING FILE TRANSFER SIMPLE FTP Assignment

Learning Objectives Understand the importance of good communication on projects and describe the major components of a communications management plan Discuss the elements of communications planning--including information

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