Channel and source coding theories are discussed. The following subject areas are covered: large constraint length convolutional codes (the Galileo code); decoder design (the big Viterbi decoder); Voyager's and Galileo's data compression scheme; current research in data compression for images; neural networks for soft decoding; neural networks for source decoding; finite-state codes; and fractals for data compression
In this report, we present the results of our recent work on turbo coding in two formats. Appendix A...
In order to communicate reliably and to reduce the required transmitter power, NASA uses coded commu...
End-to-end system considerations involving channel coding and data compression are reported which co...
In his seminal 1948 paper 'The Mathematical Theory of Communication,' Claude E. Shannon derived the ...
Data Compression and Error-protection coding are two of the now widely heard but not well underst...
With the development of new advanced instruments for remote sensing applications, sensor data will b...
Future space missions will put severe constraints on communication links in terms of data rates, ba...
The theoretical relationship among signal power, distortion, and bandwidth for several source and ch...
Worked performed during the reporting period is summarized. Construction of robustly good trellis co...
Error control coding has been used extensively in digital communication systems because of its cos...
Results of research on the use of convolutional codes in data communications are presented. Convolut...
NASA Lewis Research Center s Communications Technology Division has an ongoing program in the develo...
An introduction to coding theory and a discussion of specific coding techniques are given as applied...
The need for efficient space communication at very low bit error probabilities to the specification ...
The joint optimization of the coding and modulation systems employed in telemetry systems was invest...
In this report, we present the results of our recent work on turbo coding in two formats. Appendix A...
In order to communicate reliably and to reduce the required transmitter power, NASA uses coded commu...
End-to-end system considerations involving channel coding and data compression are reported which co...
In his seminal 1948 paper 'The Mathematical Theory of Communication,' Claude E. Shannon derived the ...
Data Compression and Error-protection coding are two of the now widely heard but not well underst...
With the development of new advanced instruments for remote sensing applications, sensor data will b...
Future space missions will put severe constraints on communication links in terms of data rates, ba...
The theoretical relationship among signal power, distortion, and bandwidth for several source and ch...
Worked performed during the reporting period is summarized. Construction of robustly good trellis co...
Error control coding has been used extensively in digital communication systems because of its cos...
Results of research on the use of convolutional codes in data communications are presented. Convolut...
NASA Lewis Research Center s Communications Technology Division has an ongoing program in the develo...
An introduction to coding theory and a discussion of specific coding techniques are given as applied...
The need for efficient space communication at very low bit error probabilities to the specification ...
The joint optimization of the coding and modulation systems employed in telemetry systems was invest...
In this report, we present the results of our recent work on turbo coding in two formats. Appendix A...
In order to communicate reliably and to reduce the required transmitter power, NASA uses coded commu...
End-to-end system considerations involving channel coding and data compression are reported which co...