Title :
Modulation and coding for satellite and space communications
Author :
Yuen, Joseph H. ; Simon, M.K. ; Miller, W. ; Pollara, F. ; Ryan, C.R. ; Divsalar, D. ; Morakis, J.
Author_Institution :
Jet Propulsion Lab., Pasadena, CA, USA
fDate :
7/1/1990 12:00:00 AM
Abstract :
Several modulation and coding advances supported by NASA are summarized. To support long-constraint-length convolutional code, a VLSI maximum-likelihood decoder, utilizing parallel processing techniques, which is being developed to decode convolutional codes of constraint length 15 and a code rate as low as 1/6 is discussed. A VLSI high-speed 8-b Reed-Solomon decoder which is being developed for advanced tracking and data relay satellite (ATDRS) applications is discussed. A 300-Mb/s modem with continuous phase modulation (CPM) and codings which is being developed for ATDRS is discussed. Trellis-coded modulation (TCM) techniques are discussed for satellite-based mobile communication applications
Keywords :
decoding; digital radio systems; encoding; error correction; modems; modulation; satellite relay systems; space communication links; 300 Mbit/s; ATDRS applications; CPM; NASA; Reed-Solomon decoder; VLSI maximum-likelihood decoder; Viterbi type; advanced tracking and data relay satellite; coding; continuous phase modulation; convolutional code; decode; deep space links; high-speed; long-constraint-length; modem; modulation; parallel processing techniques; satellite-based mobile communication; space communications; tracking/data relay satellite; trellis coded technique; Artificial satellites; Convolutional codes; Maximum likelihood decoding; Modems; Modulation coding; NASA; Parallel processing; Reed-Solomon codes; Relays; Very large scale integration;
Journal_Title :
Proceedings of the IEEE
