leansdr::wgn_c< T > Struct Template Reference

#include <dsp.h>

Inheritance diagram for leansdr::wgn_c< T >:

Collaboration diagram for leansdr::wgn_c< T >:

Public Member Functions
	wgn_c (scheduler *sch, pipebuf< complex< T >> &_out)
void	run ()
Public Member Functions inherited from leansdr::runnable
	runnable (scheduler *_sch, const char *name)
Public Member Functions inherited from leansdr::runnable_common
	runnable_common (const char *_name)
virtual	~runnable_common ()
virtual void	shutdown ()

Public Attributes
float	stddev
Public Attributes inherited from leansdr::runnable_common
const char *	name

Private Attributes
pipewriter< complex< T > >	out

Additional Inherited Members
Protected Attributes inherited from leansdr::runnable
scheduler *	sch

Detailed Description

template<typename T>
struct leansdr::wgn_c< T >

Definition at line 201 of file dsp.h.

Constructor & Destructor Documentation

wgn_c()

template<typename T >

leansdr::wgn_c< T >::wgn_c ( scheduler *  sch, pipebuf< complex< T >> &  _out  )

inline

Definition at line 203 of file dsp.h.

        : runnable(sch, "awgn"), stddev(1.0), out(_out)
    {
    }

Member Function Documentation

run()

template<typename T >

void leansdr::wgn_c< T >::run ( )

inlinevirtual

Reimplemented from leansdr::runnable_common.

Definition at line 207 of file dsp.h.

References leansdr::complex< T >::im, leansdr::cconverter< Tin, Zin, Tout, Zout, Gn, Gd >::out, and leansdr::complex< T >::re.

    {
        int n = out.writable();
        complex<T> *pout = out.wr(), *pend = pout + n;
        while (pout < pend)
        {
            // TAOCP
            float x, y, r2;
            do
            {
                x = 2 * drand48() - 1;
                y = 2 * drand48() - 1;
                r2 = x * x + y * y;
            } while (r2 == 0 || r2 >= 1);
            float k = sqrtf(-logf(r2) / r2) * stddev;
            pout->re = k * x;
            pout->im = k * y;
            ++pout;
        }
        out.written(n);
    }

Member Data Documentation

out

template<typename T >

pipewriter<complex<T> > leansdr::wgn_c< T >::out

private

Definition at line 231 of file dsp.h.

stddev

template<typename T >

float leansdr::wgn_c< T >::stddev

Definition at line 228 of file dsp.h.

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The documentation for this struct was generated from the following file:

• plugins/channelrx/demoddatv/leansdr/dsp.h