NDLI: Error control techniques for satellite and space communications (Document No: 19910013158)

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Error control techniques for satellite and space communications (Document No: 19910013158)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Costello Jr., Daniel J.
Copyright Year	1991
Description	Shannon's capacity bound shows that coding can achieve large reductions in the required signal to noise ratio per information bit (E sub b/N sub 0 where E sub b is the energy per bit and (N sub 0)/2 is the double sided noise density) in comparison to uncoded schemes. For bandwidth efficiencies of 2 bit/sym or greater, these improvements were obtained through the use of Trellis Coded Modulation and Block Coded Modulation. A method of obtaining these high efficiencies using multidimensional Multiple Phase Shift Keying (MPSK) and Quadrature Amplitude Modulation (QAM) signal sets with trellis coding is described. These schemes have advantages in decoding speed, phase transparency, and coding gain in comparison to other trellis coding schemes. Finally, a general parity check equation for rotationally invariant trellis codes is introduced from which non-linear codes for two dimensional MPSK and QAM signal sets are found. These codes are fully transparent to all rotations of the signal set.
File Size	7442820
Page Count	232
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910013158
Archival Resource Key	ark:/13960/t13n72j44
Language	English
Publisher Date	1991-03-01
Access Restriction	Open
Subject Keyword	Communications And Radar Phase Modulation Error Analysis Bit Error Rate Control Systems Design Signal To Noise Ratios Amplitude Modulation Decoding Rotation Phase Shift Keying Viterbi Decoders Signal Encoding Space Communication Bandwidth Parity Satellite Communication Quadratures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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