The use of interleaving for reducing radio loss in convolutionally coded systems

Author: Yuen, J. H.
Published: Feb 15, 1989.
Physical Description: 1 electronic document
Additional Creators: Simon, M. K. and Divsalar, D.

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Summary

The use of interleaving after convolutional coding and deinterleaving before Viterbi decoding is proposed. This effectively reduces radio loss at low-loop Signal to Noise Ratios (SNRs) by several decibels and at high-loop SNRs by a few tenths of a decibel. Performance of the coded system can further be enhanced if the modulation index is optimized for this system. This will correspond to a reduction of bit SNR at a certain bit error rate for the overall system. The introduction of interleaving/deinterleaving into communication systems designed for future deep space missions does not substantially complicate their hardware design or increase their system cost.

Other Subject(s)

COMMUNICATIONS AND RADAR

Collection

NASA Technical Reports Server (NTRS) Collection.

Note

Document ID: 19890010083.
Accession ID: 89N19454.
The Telecommunications and Data Acquisition Report; p 21-39.

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