國立臺灣大學電信工程學研究所陳光禎2006-07-262018-07-052006-07-262018-07-052001-07-31http://ntur.lib.ntu.edu.tw//handle/246246/20229Two multi-rate transmission schemes, multi-code (MC) and variable spreading length (VSL), for realizing multimedia communications on three types of OFDM-CDMA systems are proposed separately. We integrate them into a programmable structure such that the operation can be controlled and adjusted by system parameters and thus the transceiver can be used in different systems without changing the fundamental hardware and software architecture, which satisfies the trend of software-radio for future applications.application/pdf76153 bytesapplication/pdfzh-TW國立臺灣大學電信工程學研究所CDMAOFDMmulti-rateOFDM-CDMAsoftware radiomulti-codevariable-spreading length codemulti-media communicationreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/20229/1/892219E002033.pdf