Hi,
I have questions about the parameters in the DBPSK and Low Pass Filter blocks
in GRC.
Low Pass Filter block:
1) If I set the lowpass filter block to interpolate by a factor of 10
should the sampling rate parameter by set to the input sampling rate or the
output sampling rate since they will obviously differ by a factor of 10?
2) If I set the lowpass filter block to interpolate by a factor of 10 is the
filtering operation performed before interpolation or after interpolation?
(Can the filter get rid of the spectral copies centered at multiples of the
input sample rate that are created during interpolation or do I need another
lowpass filter afterwards to remove these spectral copies?)
DBPSK block:
1) What exactly is the Samples / Symbol parameter mean? I am trying to figure
out what the relationship is between the input sample rate (bytes per second)
to the output sample rate in (complex samples per second).
2) Since the input is bytes is each bit of the byte converted to a separate
symbol meaning get 8 symbols for each imput sample(each byte)?
Thanks,
Dave
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