Vectorscope and Constellation sink?


#1

Hello,

I want to do some work with QAM and C-QUAM. Is there a method to view
phase information using the I/Q signals? I can not seem to find a
vectorscope and constellation sink.

73 Eric


#2

On Tue, Jan 23, 2007 at 07:04:37AM -0500, Eric A. Cottrell wrote:

Hello,

I want to do some work with QAM and C-QUAM. Is there a method to view
phase information using the I/Q signals? I can not seem to find a
vectorscope and constellation sink.

73 Eric

The oscope sink has an x vs y mode that may be useful.

When trying to debug stuff, typically we log all the intermediate
stuff to binary files, then load them into octave to examine.

See read_*_binary.m files in gnuradio-core/src/utils for Octave/Matlab
functions to read the binary files.

Eric