Design and Implementation of Multichannel Multistage Digital Up/Down Converters in Software Radio Architecture

• Main Authors: Chia-Wei Chuang, 莊家維
• Other Authors: Yih-Min Chen
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/44511195465952466580

碩士 === 元智大學 === 電機工程研究所 === 89 === The software radio architecture has extended the digital realm into the intermediate frequency (IF) signal processing functions, such as band-selective filtering and up/down frequency conversion, which are required in radio communication. In this thesis, we propose a scheme for reducing computation loads efficiently, and exploit it to implement multichannel digital up/down converters.The converters contains two important modules including the Frequency Shifting Interpolation Module (FSI) and the Frequency Shifting Decimation Module (FSD). Two systems, the multichannel digital up/down converters, are implemented by way of using Field Programmable Gate Array (FPGA). During design process, we may reduce system complexity and raise system speed as best we can. Then we can reach requirements of multistage and the goal for generating intermediate frequency signal.