Re: [Discuss-gnuradio] help: Constellation receiver Object Types
On Thu, Aug 8, 2013 at 3:43 AM, Martin Braun (CEL) wrote: > On Wed, Aug 07, 2013 at 04:28:49PM -0700, tom sutherland wrote: >> I wanted to use the Constellation Receiver Block for QAM16 but the Class >> Reference only shows 8PSK, BPSK, DPSK PSK, and QPSK. Can this be used for >> 16QAM? > > There's no 16QAM object derived from gr::digital::constellation, > unfortunately. There's a 16QAM-receiver on the python side (checkout > qam.py). > > MB But you can make your own constellation with whatever symbol map and constellation points you want. If you have the latest version of GNU Radio checked out of git, there is a 'Constellation Object' GRC block that helps with this. You give it a list of complex points for the constellation and a list of symbols of 0 to (k-1) for the mapping of the bits to constellation points. -- Tom Visit us at GRCon13 Oct. 1 - 4 http://www.trondeau.com/grcon13 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] help: Constellation receiver Object Types
On Wed, Aug 07, 2013 at 04:28:49PM -0700, tom sutherland wrote: > I wanted to use the Constellation Receiver Block for QAM16 but the Class > Reference only shows 8PSK, BPSK, DPSK PSK, and QPSK. Can this be used for > 16QAM? There's no 16QAM object derived from gr::digital::constellation, unfortunately. There's a 16QAM-receiver on the python side (checkout qam.py). MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association pgpfznLhJGOCt.pgp Description: PGP signature ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] help: Constellation receiver Object Types
I wanted to use the Constellation Receiver Block for QAM16 but the Class Reference only shows 8PSK, BPSK, DPSK PSK, and QPSK. Can this be used for 16QAM? Thanks...Tom___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Help: Constellation Receiver::Object
Tom, >>I am trying to use the Constellation Receiver Block and one of the Parameters is "Constellation Object". Is this a pointer to an object and >>how/what creates this object? I have looked at the qam.py file but don't follow how this relates to placing a block down in gnuradio >>companion. In GRC u can use 1) from gnuradio import digital (Using Import block) 2) my_const_obj = digital.constellation_qpsk() (Using variable block). To see other options for creating the constellation object see http://gnuradio.org/doc/doxygen/classgr_1_1digital_1_1constellation.html 3) In constellation receiver>constellation Object parameter add my_const_obj.base() -Adeel On Mon, Aug 5, 2013 at 7:17 PM, tom sutherland wrote: > I am trying to use the Constellation Receiver Block and one of the > Parameters is "Constellation Object". Is this a pointer to an object and > how/what creates this object? I have looked at the qam.py file but don't > follow how this relates to placing a block down in gnuradio companion. > Thanks...Tom > > Sent from Yahoo! Mail on Android > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Help: Constellation Receiver::Object
I am trying to use the Constellation Receiver Block and one of the Parameters is "Constellation Object". Is this a pointer to an object and how/what creates this object? I have looked at the qam.py file but don't follow how this relates to placing a block down in gnuradio companion. Thanks...Tom Sent from Yahoo! Mail on Android ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
