The Improvement of Digital HF Communication Through Coding: I - Interleaved Cyclic Coding

In previous work the technique of error correction of digital data through the use of interleaved cyclic codes and a set of probability functions for the evaluation of error patterns have been presented. In this paper the previous results will be extended to the class of Bose-Chaudhuri-Hocquenghem (BCH) codes and PMcodes. A set of simple equations will be presented for the description of an interleaved cyclic code and for its associated delay. The performance of interleaved cyclic codes will be demonstrated to be sufficient to correct all types of measured HF error patterns, and, using delay as a basis of comparison, it will be demonstrated that only the total bit interleaving is important in achieving error correction.