用於ADSL影像擷取之16-QAM數據機研究

Abstract

本文考慮在現有電話線網路中，使用16-QAM技術來傳送一200仟位元率的 影像資料。在設計這種16-QAM數據傳收器所需考慮的幾項因素，諸如基頻 及帶頻的載波同步和時脈同步問題以及差動編碼/解碼技術(Differ- ential encoding/decoding)，均為本文探討之重點。 In this thesis, 16-QAM technology is considered to transmit a 200 kbps image-based data over the existed copper-wire network. There are several factors that must be considered in designing the 16-QAM modem, such as the baseband or passband of carrier synchronizations/timing synchronizations, and differential encod- ing/decoding techniques, to be the key points of this thesis.