Power efficient cross-correlation using bitstreams

The fundamental operation of cross-correlating signals is viable in a number of signal processing applications. In typical pattern-matching applications, cross-correlation is desirable. In this paper we present a power efficient implementation of a time-domain cross-correlator suitable for integration in CMOS. Bitstream coding of both data and template simplify multiplication operations. Measured performance of a CMOS implementation in 90 nm technology is reported.