Multilevel Noise Code Mate Pair Generation and Utilization of Such Codes.
DEPARTMENT OF THE ARMY WASHINGTON DC
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Noise codes are generated of a type termed code mates having correlation functions which, upon detection in a matched filter, provide an impulse autocorrelation function. More particularly, code mate pairs of at least two code bits each are generated and shown, for purposes of illustration, utilized in a communications system and wherein one code mate is comprised of two signal bits of first and second or opposite polarity, one bit of which has a larger amplitude than the other bit and wherein the other code mate is comprised of two signal bits of said second polarity, one bit of which has a like larger amplitude than the other bit. Author