SETEL, S. A., as a part of the european project PROMOSHYGES (BRITE-EURAM 789)
Duration:
1995-1998
This was a european project within the BRITE-EURAM framework with the final goal of monitoring large turbo-generator sets in hydroelectric plants. The project leader was Iberdrola (SP) and, besides the GTAS group, the rest of partners were ANSALDO (IT), IRCOM (FR), LETI (FR) and the groups of mechanical engineering and photonics of the University of Cantabria. The work of our group was focused on the development of a flexible and powerful acquisition and signal processing unit that we called DASPU (Digital Acquisition Signal Processing Unit).
In this project the GTAS group developed a unit called DAT (Digital to Analog Transmodulator), which receives the satellite digital TV signal (QPSK modulated) and transforms this signal into a conventional analog PAL channel. The DAT carries out the following tasks: QPSK demodulation, FEC channel decoding (Reed-Solomon and Viterbi), demultiplexing of the MPEG-2 stream and audio /video decoding en enconding form MPEG to PAL. We used chips from LSI LOGIC and made the design, implementation and evaluation of the overall system.
In this project we developed a TDT to operate in Satellite Master Antenna TV (SMATV) systems. The goal of the TDT is to transmodulate the digital TV signal from the satellite link modulation (QPSK) to the cable modulation format (64-QAM). The main tasks of the TDT are: QPSK demodulation, forward error correcting code (Reed-Solomon y Viterbi) and QAM modulation. A new Reed-Solomon encoder is introduced as a channel encoder for the cable link. For the design of the TDT we used chips from LSI LOGIC. More than 50000 units of the final product were sold by IKUSI in several countries.
