All-Digital Amplitude-Locked Loop Separation System for Adaptive FIR Filter Analysis

• Main Authors: Gwo-Jiun Horng, 洪國鈞
• Other Authors: Gwo-Jia Jong
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/76469202344891094009

碩士 === 國立高雄應用科技大學 === 電子與資訊工程研究所碩士班 === 96 === The mobile communication is often interfered by any type of noises. The all digital phase-locked loop (ADPLL) system has been successfully used for decades in order to track the carrier phase of a frequency modulation (FM) signal. In this thesis, we study integration ADPLL and the all-digital amplitude-locked loop (ADALL) system structure for modulation signals of the separation co-channel transmission system. It is demonstrated co-channel separation signals from FM system in the results of simulation experiments. The least mean square (LMS) theory is introduced more efficiently to eliminate the noise interference and separate the multi-channel signals. This thesis is also shown and demonstrated that the multi-channel signal in FM system which are separated by using the ADPLL and the ADALL algorithms with an adaptive finite impulse response (FIR) filter is developed. The multi-channel interference of the additive white Gaussian noise (AWGN) has been solved by using the algorithm, when receiver signals are demodulated by the LMS algorithm. The separation signals of the multi-channel can be obtained the prefect performance.