Command word generation for space data networks

Command word is generated simply by using an American Standard Code for information interchange via a keyboard in some space data networks. There is no Hamming distance control between command words. Also, command verification procedure is not employed and the command words can be as long as 4096 bytes. In such situations, the command word rejection and false acceptance probabilities can be significant. A goal of the paper is to analyze the exact probabilities of the correct command word acceptance, the false command word acceptance, and rejection of a command word for both error correction and no-error correction cases as a function of the channel bit error probability. Another goal of the paper is to propose a reasonable and inexpensive scheme for generating the command words