DIGITAL CORRELATOR FOR CALCULATING FIGURE OF MERIT OF COMMUNICATION TRANSMISSION SYSTEM

摘要

A circuit for providing a measure of the fidelity of a communication transmission (figure of merit) by determining the correlation between a transmitted sequence of digital numbers with the same numbers locally generated. The number of correlated digital numbers is counted (hits) which occur during a transmission of a total number of digital numbers (hits plus misses). The number of hits in binary form is converted to the number of hits minus misses by shifting the digit in the most significant bit position to that of the least significant bit. This binary number is a close approximation of the figure of merit (disregarding the decimal point).