Title :
A data reply link system for satellite TV applications
Author :
Slader, J.T. ; Smithson, P.M. ; Tomlinson, M.
Author_Institution :
Satellite Commun. Res. Centre, Plymouth Univ., UK
Abstract :
A low cost satellite data reply link is presented which may be used to interactively demand the broadcast of data or video “direct to home”. Due to the burst nature of the reply packets, rapid acquisition to the signal is necessary. Frequency detection, demodulation and clock recovery algorithms are presented which have been successfully implemented in real time using digital signal processing (DSP). Signal acquisition, demodulation and clock recovery synchronisation are achieved within just 1 ms (32 symbols), allowing message data to be successfully decoded for forward error correction and off-line processing
Keywords :
data communication; demodulation; digital television; direct broadcasting by satellite; forward error correction; interactive television; packet radio networks; signal detection; signal processing; synchronisation; television broadcasting; DBS; clock recovery algorithms; data broadcast; demodulation; digital signal processing; direct to home broadcasting; forward error correction; frequency detection; interactive TV; low cost satellite data reply link; message data decoding; off-line processing; rapid signal acquisition; real time implementation; reply packets; satellite TV applications; synchronisation; video broadcast; Clocks; Costs; Demodulation; Digital signal processing; Digital video broadcasting; Frequency; Satellite broadcasting; Signal processing; Signal processing algorithms; TV broadcasting;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.638505
