Title :
Multilevel codes for digital HDTV
Author :
Schilpp, M. ; Netter, A. ; Rupprecht, W. ; Bogenfeld, E.
Author_Institution :
Inst. of Commun. Eng., Kaiserslautern Univ., Germany
Abstract :
Multilevel coded modulation is a special case of coded modulation. It was proposed by Imai (1977) at nearly the same time as Ungerboeck (1982) proposed trellis-coded modulation (TCM). A sequence of subsets is coded with a variable rate using block and/or convolutional codes in contrast to TCM based on a rate of m-1/m. We focus on multilevel codes with punctured convolutional codes for digital video broadcasting. In this area the bits normally have different importance. Therefore we use a combination of multilevel codes and multiresolution modulation for unequal error protection
Keywords :
convolutional codes; digital television; high definition television; image resolution; modulation coding; television broadcasting; video coding; TCM; block codes; convolutional codes; digital HDTV; digital video broadcasting; multilevel coded modulation; multilevel codes; multiresolution modulation; punctured convolutional codes; trellis-coded modulation; unequal error protection; variable rate coding; Convolution; Convolutional codes; Digital modulation; Digital video broadcasting; Error correction codes; HDTV; Maximum likelihood decoding; Modulation coding; Protection; Signal resolution; Space technology;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.544996
