Final Year Project proposal for Embedded system students
BlueTooth Prattle is great idea for Graduate and post graduate students of engineering at both college and university level.
Bluetooth Prattle final year project proposal for Engineering Student related of telecommunications, computer and embedded system students.
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Bluetooth Prattle as a Final Year Project proposal.
The application that we have decided to develop will allow Bluetooth system users to communicate live using their systems. To develop this application we will make use of the Bluetooth specification that enables audio transmissions between two or more Bluetooth units.
Bluetooth is an emerging standard for short-range, point-to-multipoint communications. It provides an easy wireless mechanism for attaching peripherals to a host device. Bluetooth is a robust, low-power, short-range, two-way RF link yielding medium-speed data rates, and is ideal for point-to-multipoint communications.
Bluetooth is intended as a standard for low-power, short-range, point-to-multipoint communications. It was created by the Bluetooth Special Interest Group (SIG), which has widespread participation by many companies. Originally initiated by L M Ericsson, it was designed as a short-range (10 feet) communications medium for wireless headsets to communicate with cellular phones. Recently, its range has been increased up to 100 meters, and Bluetooth has since been expanded to include a central wireless communications point that enables PCs, notebooks, and PDAs to communicate with a host of peripherals including printers and scanners.
Bluetooth employs an FHSS spreading technique, changing frequencies at a rate of 1600 times per second-160 times the rate at which a wireless LAN changes frequencies. Like 802.11 it rotates among 79 different frequencies. This provides a fairly robust communications link for its intended range. The data rate is up to 723kbps, but many advocates expect an average throughput of 200-400kbps. This is due to the incorporation of the same data rate back-off capabilities that are included in 802.11b standard.
Bluetooth’s power usage is very low, less than a milli-watt, making it very efficient. However, since it is a bi-directional communications technique, the receiver must stay on and therefore the power use is greater than that of a one-way communications link.
The Bluetooth specification creates “piconets” that will exist around a central single cell. The cell can support up to 8 devices and can comprise a combination of up to seven data channels and/or three voice channels. There is no specification for a transport layer, which is required to support roaming in a cellular system. Thus it is best suited for the point-to-multipoint, single-cell applications for which it was designed.
Bluetooth has also been evaluated for its potential to provide location information in the form of a milepost system. This would function by identifying with which piconet a device is communicating. However, this implementation would be problematic in that the granularity of location would be 30 feet and require an inordinate quantity of piconets and associated hardware to provide coverage of any meaningful area. Additionally, if cells overlap then location would be indeterminate between the two cells.
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