Re: [Discuss-gnuradio] About setting the GRC block properties.

[Martin Braun (CEL)]

On Tue, Sep 17, 2013 at 02:50:33PM -0500, Kevin wrote:
>    self.digital_ofdm_carrier_allocator_cvc_1 =
> digital.ofdm_carrier_allocator_cvc(fft_len, (-30,-29,-28, -27, -26, -25, -24,
> -23, -22, -21, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -9, -8 ,
> -7, -6, -5, -4, -3, -2, -1,1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
> 16, 17, 18, 19, 20, 21,22,23,24,25,26,27,28,29, 30,31),(-30,-29,-28, -27, -26,
> -25, -24, -23, -22, -21, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, 
> -10,
> -9, -8 , -7, -6, -5, -4, -3, -2, -1,1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
> 14, 15, 16, 17, 18, 19, 20, 21,22,23,24,25,26,27,28,29, 30,31), ((-31),(-31)),
> ((1),(1j)), (0,0), "packet_len")

I think you just need brackets around the carrier allocation table.
Also, use Python's range() to make stuff more readable.

>  File "/usr/local/lib/python2.7/dist-packages/gnuradio/digital/
> digital_swig.py", line 4268, in make
> 
>    return _digital_swig.ofdm_carrier_allocator_cvc_make(*args, **kwargs)
> 
> TypeError: in method 'ofdm_carrier_allocator_cvc_make', argument 2 of type
> 'std::vector< std::vector< int,std::allocator< int > >,std::allocator<
> std::vector< int,std::allocator< int > > > > const &'
> 
> I think I set something wrong on this block, is there any place which contain
> all the documentation about how to set the parameters?

Yeah, of course: http://gnuradio.org/doc/doxygen/group__ofdm__blk.html
It's in the manual.

> also, I am confused on the "Virtual source" block, it shows "pre-ofdm"
> 
> how can I create and make this? 

This is unclear. Perhaps you can explain what you're trying to do?

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

pgpiM9op1L5fi.pgp
Description: PGP signature