Title :
Hybrid channel coding for multiresolution HDTV terrestrial broadcasting
Author :
Polley, M.O. ; Wee, S.J. ; Schreiber, W.F.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
Abstract :
This paper describes a new HDTV system that applies joint multiresolution (MR) source and channel coding to efficiently use the available radio spectrum. Hybrid analog/digital MR channel modulation provides the benefits of digital source coding and the more efficient spectrum usage of analog transmission. Nonuniform spacing of the digital signaling levels provides MR delivery of the digital components while spread-spectrum processing permits MR delivery of the analog components. Error correction coding and OFDM channel modulation deliver the MR service in widely varying channel conditions. Simulation results demonstrate performance in various regions of the service area.<>
Keywords :
channel coding; error correction codes; frequency division multiplexing; high definition television; source coding; spread spectrum communication; television broadcasting; video coding; OFDM channel modulation; analog transmission; channel coding; digital signaling levels; error correction coding; hybrid analog/digital MR channel modulation; hybrid channel coding; multiresolution HDTV terrestrial broadcasting; performance; pyramid filtering; radio spectrum; simulation; source coding; spread-spectrum processing; video coding; widely varying channel conditions; Channel coding; Digital modulation; Error correction codes; HDTV; Modulation coding; OFDM modulation; Signal processing; Signal resolution; Source coding; Spread spectrum communication;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX, USA
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413312
