Title :
Performance of coded QPSK modulation for the delivery of MPEG-2 stream compared to analog FM modulation
Author_Institution :
Sci.-Atlanta Inc., Norcross, GA, USA
Abstract :
The author compares the performance of coded quadrature phase-shift keying (QPSK) and analog frequency modulation (FM) for the delivery of video services by satellite. The proposed digital video scheme uses the Motion Picture Experts Group (MPEG-2) video compression with a concatenated coding. The performance of both systems is compared. The digital video scheme is shown to be more robust in noise and to increase the number of video channels when compared to FM. This allows the use of a smaller receiving antenna and results in lowering the cost per service delivered
Keywords :
data compression; digital communication systems; direct broadcasting by satellite; image coding; phase shift keying; telecommunication services; video signals; MPEG-2 stream; Motion Picture Experts Group; analog FM modulation; coded QPSK modulation; coded quadrature phase-shift keying; concatenated coding; cost per service delivered; digital video scheme; receiving antenna; video channels; video compression; video services; Concatenated codes; Frequency modulation; Modulation coding; Motion pictures; Noise robustness; Phase shift keying; Quadrature phase shift keying; Satellites; Transform coding; Video compression;
Conference_Titel :
Telesystems Conference, 1993. 'Commercial Applications and Dual-Use Technology', Conference Proceedings., National
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-1325-9
DOI :
10.1109/NTC.1993.292998
