In this paper, some properties of Boolean functions via the unitary transform and c-correlation are presented. Based on transform, we present two classes secondary constructions for c-bent4 functions. Also, by using functions, a direct link between c-autocorrelation function is provided, relationship among c-crosscorrelation arbitrary four can be obtained.

Nonlinear spatial transforms are established in feature extraction and pattern recognition. This paper describes a method for calculating the cyclic crosscorrelation with the help of generalized circular transforms. Based on the crosscorrelation property, a nonlinear translation invariant autocorrelation and a complete set of simplified translation invariants, called -spectrum, can G̃ be deduced...

We propose an algorithm for segmenting multispeaker meeting audio, recorded with personal channel microphones, into speech and non-speech intervals for each microphone’s wearer. An algorithm of this type turns out to be necessary prior to subsequent audio processing because, in spite of close-talking microphones, the channels exhibit a high degree of crosstalk due to unbalanced calibration and ...

Modern digital correlators permit the simultaneous measurement of all four Stokes parameters using auto and crosscorrelation. We briefly outline the fundamental requirements and some practical details of performing such measurements and refer to two additional papers that provide overview and cover calibration issues in detail. Subject headings: polarization — instrumentation: polarimeters — te...

For a pair $(f,g)$ of sequences of length $\ell$ whose terms are in $\{-1,1\}$, Pursley and Sarwate established a lower bound on a combined measure of crosscorrelation and autocorrelation for $f$ and $g$. They showed that the sum of the mean square crosscorrelation between $f$ and $g$ and the geometric mean of $f$'s mean square autocorrelation and $g$'s mean square autocorrelation must be at le...

In this paper, we propose a simple but efficient method for optimizing correlation properties of polyphase spreading sequences for asynchronous DS CDMA applications. The proposed method can be used to minimize the mean square value of aperiodic crosscorrelation or the mean square value of aperiodic autocorrelation, the maximum value of aperiodic crosscorrelation functions, merit factor or other...

This paper describes subband-crosscorrelation (SBXCOR) analysis using two channel signals. The SBXCOR analysis is an extended signal processing technique of subband-autocorrelation (SBCOR) analysis that extracts periodicities present in speech signals. In this paper, the performance of SBXCOR is investigated using a DTW word recognizer, under simulated acoustic conditions on computer and a real...

–Binary m-sequences are maximal length sequences generated by shift registers of length m, that are employed in navigation, radar, and spread-spectrum communication. It is well known that given a pair of distinct m-sequences, the crosscorrelation function must take on at least three values. This correspondence shows the three correlation values are symmetric about -1. The main result is a proof...