Using Adaptive Filter with AOSC-LMS Algorithm at the Receiver of Bluetooth
碩士 === 逢甲大學 === 電機工程所 === 90 === Abstract In the past decades, progress in microelectronics and VLSI technology has fostered the widespread use of computing and communication applications in portable electronic devices. Around late 90’s, the idea of the Bluetooth technology was brought out by Ericss...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2002
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| Online Access: | http://ndltd.ncl.edu.tw/handle/aduye2 |
| Summary: | 碩士 === 逢甲大學 === 電機工程所 === 90 === Abstract
In the past decades, progress in microelectronics and VLSI technology has fostered the widespread use of computing and communication applications in portable electronic devices. Around late 90’s, the idea of the Bluetooth technology was brought out by Ericsson to replace cable connections between digital devices. This is a new universal radio interface enabling electronic devices to connect and communicate wirelessly via short-range connections.
The Gaussian Frequency Shift Keying (GFSK) modulation has been chosen as the modulation technique for the physical layer of Bluetooth. This paper proposes a novel adaptive algorithm (AOSC-LMS algorithm) to detect the frequency of a sinusoid in noisy environment and determine the data from the receiver signal. The adaptive algorithm is based on the working principle of active-oscillator. In order to reduce interference of the noise, the AOSC-LMS algorithm is associated with a narrow-band IIR band-pass filter and adjusts the central frequency by the coefficient updated. Therefore, make sure maintain BER is under 0.1% on the environment which SNR is 21dB .
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