Get the A+ 4 Real e-book for your own computer.
Click Here!

Custom Search







Table Of Contents  CertiGuide to A+ (A+ 4 Real)
 9  Chapter 13: Basic Networking Terminology
      9  Wireless
           9  Infrared (IR)

Previous Topic/Section
Infrared (IR)
Previous Page
Pages in Current Topic/Section
1
Next Page
Satellite
Next Topic/Section

Advantages and Disadvantages of Using IR

The inherent congestion and blocking of a radio-frequency spectrum, especially in large cities, cities, it becomes rather problematic to receive frequency, and permissiveness of "open" frequencies which can guarantee a permanent quality of the channels in commercial and official communication systems, due to the use of advanced transfer technologies with frequency jump and complex digital coding.

A high confidentiality of communication is ensured by a narrow beam with complete absence of lateral radiation, which is the carrier of the transfer.

The absence of complexities in IR technology is limiting the transfer speed. In radio frequency systems to achieve reasonable width of a transfer band it is crucial to apply refined coding, which besides reduces other characteristics of system (e.g. the signal-to-noise value). The high-speed characteristics of the transfer channel in IR-systems are defined by the characteristics and efficiency of modulating amplifiers and frequency properties of photo diodes. Already now, speeds have reached a mark of 2.5 Gbps, and with multiplexing on a wavelength - up to 10 Gbps. This seems not to be a limit.

IR wireless systems develop further in the market of telecommunications. Moreover, the opportunities of tomorrow's day already occur today.


Previous Topic/Section
Infrared (IR)
Previous Page
Pages in Current Topic/Section
1
Next Page
Satellite
Next Topic/Section

If you find CertiGuide.com useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider buying an inexpensive PDF equivalent of the CertiGuide to A+ (A+ 4 Real) from StudyExam4Less.com. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

CertiGuide to A+ (A+ 4 Real) (http://www.CertiGuide.com/apfr/) on CertiGuide.com
Version 1.0 - Version Date: March 29, 2005

Adapted with permission from a work created by Tcat Houser et al.
CertiGuide.com Version Copyright 2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.