Wireless Networking, Personal Area Networks

Essay by yasser.aliyanUniversity, Master'sA-, April 2010

download word file, 9 pages 0.0

{DATE\\@ "03/22/2006"}

Student's Name: Yasser Aliyan

Assignment Type: Individual Project

Unit: 1

Course: ITN 460-0602A-01

Prof: Dr. Khaled Elleithy

Cover Page

Wireless Networking

Wireless Transmission

Personal Area Networks

find examples of devices that use radio frequency technology and those that use infrared (IR which includes the IrDA specifications IrPHY, IrLAP, IrLMP, IrCOMM, Tiny TP, IrOBEX, IrLAN and IrFM "Point & Pay"). Compare costs and capabilities. Recommend some of these devices to be used in the design of the WLAN of your local hospital.

 Identify wireless network architectures

 Research emerging technologies in wireless networking and evaluate their possible impact on an existing system

Infrared Technology

As depicted in Fig. 1, infrared radiation is the region of the electromagnetic spectrum between microwaves and visible light. In infrared communication an LED transmits the infrared signal as bursts of non-visible light. At the receiving end a photodiode or photoreceptor detects and captures the light pulses, which are then processed to retrieve the information they contain.

Some common applications of infrared technology are listed below.

Augmentative communication devices

Car locking systems

Computers a. Mouse b. Keyboards c. Floppy disk drives d. Printers

Emergency response systems

Environmental control systems a. Windows b. Doors c. Lights d. Curtains e. Beds f. Radios


Home security systems

Navigation systems



TVs, VCRs, CD players, stereos


Infrared technology offers several important advantages as a form of wireless communication. Advantages and disadvantages of IR are first presented, followed by a comparative listing of radio frequency (RF) advantages and disadvantages.

IR Advantages:

Low power requirements: therefore ideal for laptops, telephones, personal digital assistants

Low circuitry costs: $2-$5 for the entire coding/decoding circuitry

Simple circuitry: no special or proprietary hardware is required, can be incorporated into the integrated circuit of a product

Higher security: directionality...