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Bluetooth Basics

The technology of Bluetooth wireless is a short range communications method intended to replacethe cables that connect portable or fixed deviceswhile maintaining the highest levels of security.

The key features offered by Bluetooth includelow power and low cost. The specification inBluetooth defines a uniform structure for a widerange of devices to communicate and connect withone another.

The technology behind Bluetooth has achieved global satisfaction such as enabled devices, almosteverywhere in the world. Bluetooth devices willconnect and communicate without wires throughshort range and networks known as piconets.

Each device will simultaneously communicate withup to seven other devices within a single piconet,meaning that each device can also belong toseveral piconets simultaneously. The piconetsare dynamically established as Bluetooth enableddevices enter and leave the proximity of radio.

A fundamental to Bluetooth strength is the ability to handle both data and voice transmissionssimultaneously. This will enable users to enjoyvarieties of innovative solutions such as handsfree talking, printing and fax capabilities, and other applications.

SpecificationsUnlike other standards of wireless, the Bluetoothspecification gives product developers both alink layer and application layer definitions,which will help support data and voice applications.

SpectrumThe Bluetooth technology operates in the industrialand scientific band at 2.4 to 2.485 GHz, using aspread spectrum, frequency hopping signal.

InterferenceThe adaptive frequency hopping of Bluetoothtechnology was designed to reduce interferencebetween wireless technologies that share the 2.4GHz spectrum. Adaptive frequency hopping (AFH)works well within the spectrum to take full advantage of the frequency available.

AFH hopping allows for more efficient transmissionwithin the spectrum, which provides users withgreater performance even if they are using othertechnologies along with Bluetooth.

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