TAILIEUCHUNG - Lecture Wireless and mobile computing – Chapter 7: Transmission Fundamentals Review Q/A

Lecture Wireless and mobile computing – Chapter 7: Transmission Fundamentals review Q/A. The following will be discussed in this chapter: Transmission media, guided unguided media, transmission media, microwave transmission, direct broadcast satellite, multiplexing, FDM TDM. | TRANSMISSION FUNDAMENTALS Review Q/A Lecture 7 1 Overview Transmission Media Guided Unguided Media Transmission Media Microwave Transmission Direct Broadcast Satellite Multiplexing FDM TDM 2 Review Question: Guided Vs. Unguided Media Atmosphere and Outer space Review Question: Differentiate between guided media and unguided media 3 Transmission Media The transmission medium is the physical path by which a message travels from sender to receiver. Computers and telecommunication devices use signals to represent data. These signals are transmitted from a device to another in the form of electromagnetic energy. Examples of Electromagnetic energy include power, radio waves, infrared light, visible light, ultraviolet light, and X and gamma rays. All these electromagnetic signals constitute the electromagnetic spectrum Review Question: Guided Vs. Unguided Media 4 Classes of Transmission Media Conducted or guided media use a conductor such as a wire or a fiber optic cable to move the signal from sender to receiver Wireless or unguided media use radio waves of different frequencies and do not need a wire or cable conductor to transmit signals Review Question: Guided Vs. Unguided Media 5 5 Review Answer: With guided media, the electromagnetic waves are guided along an enclosed physical path, whereas unguided media provide a means for transmitting electromagnetic waves through space, air, or water, but do not guide them. Atmosphere and Outer space Review Question: Differentiate between guided media and unguided media Review Question: Guided Vs. Unguided Media 6 7 Review Question: Microwave Transmission Review Question: What are some major advantages and disadvantages of microwave transmission? 8 Microwave Transmission Characteristics Microwave transmission covers a substantial portion of the electromagnetic spectrum. Common frequencies used for transmission are in the range 2 to 40 GHz. The higher the frequency used, the higher the potential bandwidth and therefore the higher

• Quản trị mạng
• Mobile computing
• Wireless and mobile computing
• Services data
• Wireless communication
• Transmission media
• Microwave transmission
• Transmission fundamentals
• Mobile computing transmission fundamentals
• Mobile computing simulations
• Network simulation
• Addressing routing
• Visualization tool
• Signals for conveying information
• Digital data transmission
• Mobile systems
• Mobile services
• Lecture Electronic commerce
• Electronic commerce
• Define mobile commerce
• Personal digital assistant
• Wireless mobile computing
• Lecture Mobile applications overview
• Mobile applications overview
• Mobile computing devices
• Mobile applications becoming ubiquitous
• Mobile cloud computing
• Mobile web services
• Cloud computing
• Medical cloud multi agent system
• New mobile medical
• Introduction to Mobile Cloud Computing
• MCC Architecture
• Advantages of MCC
• MCC Applications
• MCC Issues
• Error control
• Digital communication system
• Error detection
• Cyclic Redundancy Check
• Software defined radio
• Satellite communications
• Satellite foot print
• Wireless LAN technology
• Electromagnetic radiation spectrum
• Wireless media standards
• Requirement of protocol
• OSI model
• Protocol suit
• Network access layer
• Transport layer