getMatchedFilter

System object: phased.PhaseCodedWaveform
Namespace: phased

Matched filter coefficients for waveform

Syntax

Coeff = getMatchedFilter(H)
Coeff = getMatchedFilter(H,'FrequnecyOffset',FOFFSET)


Description

Coeff = getMatchedFilter(H) returns the matched filter coefficients for the phase-coded waveform object, H. Coeff is a column vector.

Coeff = getMatchedFilter(H,'FrequnecyOffset',FOFFSET) adds a frequency offset when matched filter coefficients are generated. FOFFSET must be a positive scalar. This option is available when you set the FrequencyOffsetSource property to 'Input port' for the input object, H.

Input Arguments

H	Phase-coded waveform object.

Output Arguments

Coeff

Column vector containing coefficients of the matched filter for H.

Examples

Matched-Filter Coefficients for Pulse-Coded Waveform

Obtain the matched filter coefficients for a phase-coded pulse waveform that uses the Zadoff-Chu code.

waveform = phased.PhaseCodedWaveform('Code','Zadoff-Chu','ChipWidth',1e-6, ...
    'NumChips',16,'OutputFormat','Pulses','NumPulses',2);
coeff = getMatchedFilter(waveform);
stem(real(coeff))
title('Matched Filter Coefficients, Real Part')
axis([0 17 -1.1 1.1])