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I. Introduction
A. Abstract
Upon entering the 21st century, wireless facilities for personal and commercial applications are becoming more desirable and, thanks to advances in wireless technology, also more attainable. With the massive rise in popularity of mobile and fixed electronic computing devices (PCs, PDAs, Laptops, Mobile phones, etc.), there has been a growing demand for high speed digital wireless communication facilities. As the numbers of these devices increase and their use becomes so widespread, the use of cables to connect them becomes cumbersome and more inconvenient.
Bluetooth is a wireless communication standard aimed at removing the need for cables between a wide range of electronic devices such as PCs, PDAs, and mobile phones. Bluetooth was designed to provide short range, low cost, low power radio connections. It uses the unlicensed 2.4GHz Industrial, Scientific and Medical (ISM) band that may be used freely worldwide. In opting for a microwave based radio system instead of an infrared system, Bluetooth devices do not require a direct line of sight to communicate giving it a significant advantage over IR based competitors. It uses a Spread spectrum frequency hopping technique that prevents interference from other devices also using the ISM band. This is a critical feature as it allows a large number of devices to operate in a localized area.
A Bluetooth FM transmitter using the high technology of the Bluetooth can send the FM transmission to your car radio, allowing you to talk to callers from an external DSP (Digital Signal Processor) microphone. When someone calls you on your mobile phone, the music will stop playing on the radio and then you can talk to the caller. Once the call has ended, the music from the Bluetooth FM transmitter will resume.
It was the objective of this project to overview the hardware for an Application using the Bluetooth standard. The application was to aimed at establishing wireless connections between fixed and mobile (vehicular) modules to allow the exchange of data specific to the vehicles’ objective.
B. Background/History
• The Bluetooth wireless specification got its name from Harald Blaatand (translates to "Bluetooth"), a 10th-century Danish king who used diplomacy to negotiate a truce between two feuding factions. In fact, the Bluetooth logo is an overlay of the Danish characters for the king's initials: H.B.
• 1994 - In an attempt to eliminate wire clutter in homes and offices, the Swedish company Ericcson initiated the Bluetooth Technology movement.
• May 20, 1998 - Bluetooth technology is officially introduced and the Bluetooth SIG is formed by five major companies (IBM, Intel, Nokia, Toshiba and Ericsson). Bluetooth technology's intended basic purpose is to be a wire replacement technology in order to rapidly transfer voice and data.
• July 26, 1999 - Bluetooth 1.0 Specification is introduced.
• In December 1999 the following four major companies joined the SIG as promoters: Microsoft, Agere Systems (then Lucent), 3Com and Motorola ( In no time flat the promoter companies added almost 2,000 Bluetooth "adopters" to their ranks and the number continues to grow).
• 2004 - Bluetooth Version 2.0 + EDR (Enhanced Data Rate) is introduced.
• 2005 - Devices using Version 2.0 + EDR begin to hit the market in late 2005.
• 2007 - Bluetooth Core Specification Version 2.1 + EDR is adopted by the Bluetooth SIG.
• 2009 - Bluetooth Core Specification Version 3.0 + HS (High Speed) is adopted by the Bluetooth SIG.
C. Objectives
• To provide an overview about Bluetooth FM Transmitter.
• To study the flow of the system of a Bluetooth FM Transmitter.
• To study the application of FM Transmission through the use of Bluetooth technology.
• To know the application of FM transmission for the improvement of a Bluetooth device.
• To think of better possible future development of Bluetooth FM Transmitter device.
• To know the communication standards used in a Bluetooth FM Transmitter.
• To provide wireless communication device that is compatible with mobile devices.
• To access the storage of the data on the mobile.
• To take an incoming calls and outgoing calls hands free.
• Low cost, small size, low power device.
• To enable end-users to stream music from the mobile device to car stereos or home theatre systems without cables or costly adapters.