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Wireless Developer Network Discussion
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Subject: Which technology is used to avoid interference in
Posted by ebox on Nov 28, 2012 17:30:17 CST
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Blue tooth uses frequency hopping technology. In this technology, 79 hop frequencies are transmitted and received from 2402 to 2480 mhz. hopping in a pseudo random sequence at a rate of 1600 times in a second. Guassian frequency shift keying modulation is utilized with a maximum data transfer rate of 721 kbps. Bluetooth protocol stack is developed and TCP/IP imported laye
rs are used in this technology.
Interference is being avoided by utilizing the frequency-hop(FH) spread spectrum technology. It is adaptable for low-power, low-cost radio implementations and also used in certain wireless LAN products.
The major advantage with this technology transmission is the high rate of 1600 hops / ps. Another advantage is, short packet length is also used by Bluetooth.
http://www.shanghaidoll.net/ |
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Which technology is used to avoid interference in |
ebox |
Nov 28, 2012 17:30:17 CST |
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