Multiplexing Techniques for Digital Correlator Speed Improvement

Several approaches to time-division multiplexing of digital correlator devices are developed whereby operations are overlapped in time. Where synchronization with the input signal exists, the resulting multiplexed correlators provide -fold speed improvement over individual correlator devices. A completely synchronized correlator can be formed from such multiplexed correlators by proper selection of outputs. A simplified realization is presented which only requires one set of -bit signal and reference registers and sets of -bit comparator circuits. Laboratory experimentation and computer simulations to support these concepts are described.