DSSS Plotting

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Tiisetso Ntlatleng
Tiisetso Ntlatleng el 1 de Mzo. de 2011
Respondida: Pritesh el 13 de Mzo. de 2024
I have a QPSK signal (amplitude samples) that I've spread using DSSS. The PSD of the DSSS spread signal should be spread in frequency and the power should go down. When I plot the frequency response of the DSSS signal, it looks spread but has not attenuated. I use the function {plot (20*log(fft(DSSS_time_domain_signal)))} to plot the DSSS frequency version of the signal. Is there something Im not considering when plotting?

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Respuestas (2)

Vieniava
Vieniava el 4 de Mzo. de 2011
Try this:
plot(20*log(abs(fft(DSSS_time_domain_signal))))
Pritesh
Pritesh el 13 de Mzo. de 2024
plot(20*log(abs(fft(DSSS_time_domain_signal))))

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