Channel Coding Approaches and Consequences — Single and Dual Carriers

Glenn A. Reitmeier, Richard J. Klensch, Hugh E. White

One of the key technical challenges to providing a terrestrial high-definition broadcast television service in the U.S. is to simulcast the new service into the same spectrum space occupied by present-day NTSC television. Since both NTSC and high-definition television (HDTV) must coexist during a transition period, the optimum utilization of available spectrum for HDTV requires achieving a low level of interference between NTSC and HDTV stations. Both single-carrier and dual-carrier transmission systems have been proposed for HDTV, and this paper examines some of their fundamental strengths and weaknesses. Based on an overall consideration of the latest computer analysis of HDTV and NTSC service areas and other factors, it is concluded that a single-carrier approach is preferred.

Print ISSN
Published
1994-09
Content type
Original Research
DOI
10.5594/J09652