NDLI: Bandwidth efficient coding for satellite communications

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Bandwidth efficient coding for satellite communications

Content Provider	NASA Technical Reports Server (NTRS)
Author	Costello Jr., Daniel J. Lin, Shu Poland Jr., William B. Morakis, James C. Miller, Warner H.
Copyright Year	1992
Description	An error control coding scheme was devised to achieve large coding gain and high reliability by using coded modulation with reduced decoding complexity. To achieve a 3 to 5 dB coding gain and moderate reliability, the decoding complexity is quite modest. In fact, to achieve a 3 dB coding gain, the decoding complexity is quite simple, no matter whether trellis coded modulation or block coded modulation is used. However, to achieve coding gains exceeding 5 dB, the decoding complexity increases drastically, and the implementation of the decoder becomes very expensive and unpractical. The use is proposed of coded modulation in conjunction with concatenated (or cascaded) coding. A good short bandwidth efficient modulation code is used as the inner code and relatively powerful Reed-Solomon code is used as the outer code. With properly chosen inner and outer codes, a concatenated coded modulation scheme not only can achieve large coding gains and high reliability with good bandwidth efficiency but also can be practically implemented. This combination of coded modulation and concatenated coding really offers a way of achieving the best of three worlds, reliability and coding gain, bandwidth efficiency, and decoding complexity.
File Size	404731
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19920012775
Archival Resource Key	ark:/13960/t4qk2b925
Language	English
Publisher Date	1992-02-01
Access Restriction	Open
Subject Keyword	Space Communications, Spacecraft Communications, Command And Tracking Error Analysis Bit Error Rate Signal To Noise Ratios Decoding Concatenated Codes Error Correcting Codes Decoders Phase Shift Keying Signal Encoding Bandwidth Signal Transmission Reliability Satellite Communication Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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