Title :
A VLSI architecture of a decoder for trellis coded modulation using constellations designed for the Rayleigh channel
Author :
Boutillon, Emmanuel ; Belfiore, Jean-Claude ; Demassieux, N.
Author_Institution :
Telecom Paris, France
Abstract :
New N-dimensional constellations for the Rayleigh fading channel have been described previously. These constellations provide a diversity of order N and a gain of 10 dB to 14.5 dB at a BER of 10-3 when compared to 16-QAM modulations. The decoding of a 4-dimensional 4096 points constellation seems unrealistic, even with today´s VLSI technology. This paper proposes algorithmic simplifications, which allow us to decrease the complexity of the implementation to a reasonable level. In addition, an architecture is also proposed for a VLSI decoder for a 34 Mb/s digital HDTV signal, and its complexity is evaluated
Keywords :
Rayleigh channels; VLSI; decoding; digital television; error correction codes; high definition television; television equipment; trellis coded modulation; 10 to 14.5 dB; 34 Mbit/s; BER; Rayleigh channel; VLSI architecture; VLSI decoder; VLSI technology; algorithmic simplifications; constellations; decoding; digital HDTV signal; gain; implementation complexity; trellis coded modulation; Constellation diagram; Decoding; Detection algorithms; Error correction codes; Fading; HDTV; Modulation coding; Rayleigh channels; Telecommunications; Very large scale integration;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.368900
