Title :
Recursive metric for NTSC interference rejection in the ATSC-HDTV trellis decoder
Author :
Markman, Iyonete
Author_Institution :
Thomson Multimedia Inc., Indianapolis, IN, USA
fDate :
8/1/2001 12:00:00 AM
Abstract :
In the United States Advanced Television Systems Committee (ATSC) standard for high definition television (HDTV), NTSC co-channel interference rejection may be performed by the comb filter, a filter with spectral nulls at or near the NTSC carriers, and only applied when NTSC interference is detected. In this paper, we discuss the influence of the comb filter on the trellis decoder performance. We then derive the closed form expression for the optimum trellis decoder metric when NTSC co-channel interference is detected and propose a recursive formula for its implementation
Keywords :
cochannel interference; comb filters; decoding; high definition television; interference suppression; recursive estimation; television interference; television standards; trellis codes; ATSC standard; ATSC-HDTV trellis decoder; Advanced Television Systems Committee; HDTV; NTSC carriers; NTSC interference rejection; USA; closed form expression; cochannel interference rejection; comb filter; high definition television; optimum trellis decoder metric; recursive formula; recursive metric; spectral nulls; trellis decoder performance; Decoding; Encoding; Euclidean distance; Forward error correction; HDTV; Interchannel interference; Interleaved codes; Nonlinear filters; Performance loss; TV interference;
Journal_Title :
Consumer Electronics, IEEE Transactions on
