| Summary: | 碩士 === 國立臺北科技大學 === 資訊工程系所 === 95 === The digit TV has become a hot topic in recent years. The European standard for digital video broadcasting over terrestrial(DVB-T) has already been adopted by a lot of countries, including Taiwan. To understand the technical details of the standard (ETSI EN 300 744), we decide to implement the DVB-T demodulator and channel decoder in software. We use existing DVB-T set-top box to get its intermediate frequency (IF) signal, which is digitized and stored in a PC. The program we write includes the following functions: sampling rate conversion, synchronization and demodulation for orthogonal frequency division multiplexing(OFDM), channel estimation and equalization, de-interleaving, Viterbi decoding, and Reed-Solomon decoding, etc. We finally obtain a MPEG-2 Transport Stream (TS). The TS can be decoded using a commercial media player. Thus, the correctness of our program is fully verified
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