標題: 正交轉換用於OFDM傳輸系統之研究
Study of orthogonal transfrom for OFDM transmission system
作者: 俞君兒
Yu, Jun-Er
魏哲和
Wei, Zhe-Huo
電子研究所
關鍵字: 正交轉換;正交分頻多工;電子工程;orthogonal transfrom;OFDM;Hartley transform;cosine-modulated filter bank;wavelet transform;ELECTRONIC-ENGINEERING
公開日期: 1996
摘要: The research and development of orthogonal frequency division multiplexing (OFDM) system has already been more than 30 years. Also, using discrete Fourier transform (DFT) to implement multicarrier modulation (MCM) has been proposed.In this thesis, OFDM systems based on several orthogonal transforms are studied. DFT-, discrete Hartley transform (DHT)-, wavelet packet transform (WPT)-, and cosine-modulated filter bank (CMFB)-based OFDM systems are compared in some digital communication channels. From these comparisons, DFT-based OFDM system has the advantages in easy implementation of equalizers and better immunity of frequency offset effect. It is the best choice among these orthogonal transforms for implementation of an OFDM system.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT854428008
http://hdl.handle.net/11536/62494
顯示於類別:畢業論文