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Modulation and coding for satellite and space communications

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7 Author(s)
Yuen, J.H. ; Jet Propulsion Lab., Pasadena, CA, USA ; Simon, M.K. ; Miller, W. ; Pollara, F.
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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

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Proceedings of the IEEE  (Volume:78 ,  Issue: 7 )