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

fYear

1995

fDate

13-17 Nov 1995

Firstpage

102

Lastpage

104

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE

Print_ISBN

0-7803-2509-5

Type

conf

DOI

10.1109/CTMC.1995.502940

Filename

502940