  The advent of Bluetooth wireless technology makes it possible to transmit
real-time audio in mobile devices. Bluetooth is cost-efficient and
power-efficient, but it is not suitable for traditional audio encoding and
real-time streaming due to limited bandwidth, high degree of error rates, and
the time-varying nature of the radio link. Therefore, audio streaming over
Bluetooth poses problems such as guzzling of both power and bandwidth. In order
to overcome the above mentioned problems, an algorithm is proposed in this work
to optimize the audio stream from the source to the sink by estimating the
proximity between them. The optimization is achieved by adjusting the bit rate
of the audio stream thus conserving power. We considered carefully various
Bluetooth signal parameters and the most suitable parameter for estimating the
proximity has been determined experimentally. The experiments were carried out
using Class II BS003 Bluesoleil dongle. This work will enable the Bluetooth
users to perform a seamless and optimized streaming of MP3 stereo audio data.
