Binary Correlator for Electromagnetic Signal Patterns

Abstract

Modulation patterns recognized with extensive calculations. Set of shift registers contains patterns of 1's and 0's representing presence or absence of received signal in designated time/frequency bins. Pattern in shift registers correlated with pattern of expected signal by shifting each cell to right according to expected pattern and summing shift-register outputs in analog summing network. Useful in applications requiring identification of smaller pattern of 1-bit data within larger matrix of such data.