Title :
A single-chip solution for digital demodulation and forward error correction of DBS signals
Author :
Raghavan, Sreenivasa A.
Author_Institution :
ComStream Corp., San Diego, CA, USA
Abstract :
We present a low-cost single VLSI chip solution for the reception of digitally transmitted compressed video signals. This chip is an integral part of the direct TV direct broadcast satellite (DBS) receiver, and it implements digital demodulation of baseband QPSK signals, and forward error correction using the combination of a Viterbi decoder and a Reed-Solomon decoder. Innovative digital signal processing algorithms were implemented to obtain excellent performance (<0.5 dB from theory) at a low cost
Keywords :
VLSI; Viterbi decoding; decoding; demodulation; digital signal processing chips; digital television; direct broadcasting by satellite; forward error correction; quadrature phase shift keying; television receivers; video coding; DBS receiver; DBS signals; Reed-Solomon decoder; Viterbi decoder; baseband QPSK signals; digital demodulation; digital signal processing algorithms; digitally transmitted compressed video signals; direct TV direct broadcast satellite; forward error correction; low cost single VLSI chip; video reception; Decoding; Digital communication; Digital modulation/demodulation; Digital signal processors; Forward error correction; Image coding; Quadrature phase shift keying; Satellite broadcasting; TV receiver circuits; Very-large-scale integration; Video signal processing; Viterbi decoding;
Conference_Titel :
Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/CTMC.1995.502940
