One can obtain the number of constellation points by using the syntax: constellation.arity()
Replace "constellation" with the ID of the constellation object. This will return 'M' representing the number of distinct symbols 2^n.
From: discuss-gnuradio-bounces+jtjones49=tntech.edu@gnu.org <discuss-gnuradio-bounces+jtjones49=tntech.edu@gnu.org> on behalf of Austen, Jeffrey <JAusten@tntech.edu>
Sent: Sunday, October 13, 2024 11:24:47 AM
To: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Getting constellation size as a variable
Sent: Sunday, October 13, 2024 11:24:47 AM
To: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Getting constellation size as a variable
When using the Constellation Object block in Gnu Radio Companion how can
one obtain the size of the constellation, M, or the number of bits per
symbol? This value is needed so other blocks, e.g. Pack k Bits, can be
adjusted accordingly when the constellation size is changed.
A simple example would be "Random Source" producing a binary output,
followed by "Pack k Bits" to create symbols, then "Constellation
Encoder" to convert the symbols to complex-envelope symbol values.
Currently when the constellation size is changed it is necessary to also
change an additional variable, the number of bits per symbol (which is
needed by the Pack k Bits block). I'd like to be able to get this value
from the constellation object.
one obtain the size of the constellation, M, or the number of bits per
symbol? This value is needed so other blocks, e.g. Pack k Bits, can be
adjusted accordingly when the constellation size is changed.
A simple example would be "Random Source" producing a binary output,
followed by "Pack k Bits" to create symbols, then "Constellation
Encoder" to convert the symbols to complex-envelope symbol values.
Currently when the constellation size is changed it is necessary to also
change an additional variable, the number of bits per symbol (which is
needed by the Pack k Bits block). I'd like to be able to get this value
from the constellation object.
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