Ali T. Methods and means for increasing the efficiency of utilization of check sums, echoplex and cyclic redundancy codes for data transmission error detection in computer systems and networks

Thesis is dedicated to a problem of increasing of data transmission error control in computers systems and network efficiency by rising of error detected reliability and elevating of error control operations productivity. A new approach for increasing the reliability of checksum error detection by optimization of checksum components coding based on special differential Boolean transformations has been proposed. Technique for obtained of such transformations have been worked out. Utilization of suggested approach allows detecting of all double errors and all odd-fold errors by checksum. A new approach for increasing the reliability of echoplex error detection has been proposed too by the way of echocode coding optimization according to thr type of errors which is dominated in data transmission line. The hardware structures for parallel computation of error control operations by using proposed checksum modifications and CRC has been worked out.