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Time Frequency Toolbox >> Time Frequency Toolbox > Choice of the Instantaneous Frequency > gdpower

gdpower

Signal with power-law group delay.

Calling Sequence

[X,GPD,F]=gspower(N,K,C)

Parameters

N :

an even positive integer: number of points in time

K :

a real scalar: the degree of the power-law (default : 0)

C :

a real non zero scalar: the rate-coefficient of the power-law group delay. (default : 1)

X :

a real column vector: the modulated signal samples

GPD :

a real row vector (length : round(N/2)-1): the group delay (length : round(N/2)-1)

F :

a real row vector (length : round(N/2)-1): the frequency bins

Description

generates a signal with a power-law group delay of the form tx(f) = T0 + C*f^(K-1). The output signal is of unit energy.

Examples

[sig,gpd,f]=gdpower(256,1/2); 
clf;
subplot(211);plot(sig);
subplot(212);plot(gpd,f);

See also

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