sdr::ASKDetector< Scalar > Class Template Reference

Rather trivial node to detect mark/space symbols by the amplitude. More...

#include <fsk.hh>

Inheritance diagram for sdr::ASKDetector< Scalar >:

Public Member Functions
	ASKDetector (bool invert=false)
	Constructor. More...
void	config (const Config &src_cfg)
	Needs to be implemented by any sub-type to check and perform the configuration of the node. More...
void	process (const Buffer< Scalar > &buffer, bool allow_overwrite)
	Needs to be implemented by any sub-type to process the received data. More...
Public Member Functions inherited from sdr::Sink< Scalar >
	Sink ()
	Constructor. More...
virtual	~Sink ()
	Drestructor. More...
virtual void	handleBuffer (const RawBuffer &buffer, bool allow_overwrite)
	Re-implemented from SinkBase. More...
Public Member Functions inherited from sdr::SinkBase
	SinkBase ()
	Constructor. More...
virtual	~SinkBase ()
	Destructor. More...
Public Member Functions inherited from sdr::Source
	Source ()
	Constructor. More...
virtual	~Source ()
	Destructor. More...
virtual void	send (const RawBuffer &buffer, bool allow_overwrite=false)
	Sends the given buffer to all connected sinks. More...
void	connect (SinkBase *sink, bool direct=false)
	Connect this source to a sink. More...
void	disconnect (SinkBase *sink)
	Disconnect a sink again. More...
virtual void	setConfig (const Config &config)
	Stores the configuration and propergates it if the configuration has been changed. More...
virtual double	sampleRate () const
	Returns the configured sample rate or 0 otherwise. More...
virtual Config::Type	type () const
	Returns the configured source type or Config::Type_UNDEFINED otherwise. More...
template<class T >
void	addEOS (T *instance, void(T::*function)())
	Adds a callback to the end-of-stream signal of the source. More...

Protected Attributes
bool	_invert
	If true the symbol logic is inverted. More...
Buffer< uint8_t >	_buffer
	The output buffer. More...
Protected Attributes inherited from sdr::Source
Config	_config
	Holds the source configuration, this can be updated by calling setConfig. More...
std::map< SinkBase *, bool >	_sinks
	The connected sinks. More...
std::list< DelegateInterface * >	_eos
	The connected EOS singal handlers. More...

Additional Inherited Members
Protected Member Functions inherited from sdr::Source
void	signalEOS ()
	Signals the EOS. More...
void	propagateConfig (const Config &config)
	Propagates the given configuration to all connected sinks. More...

Detailed Description

template<class Scalar>
class sdr::ASKDetector< Scalar >

Rather trivial node to detect mark/space symbols by the amplitude.

For low baud rates (i.e. <= 1200 baud) a FSK signal can be "demodulated" using a simple FM demodulator. The result will be a series of decaying exponentials. Hence the mark/space symbols can be determined by the means of the input amplitude (positive/negative).

This node implements such a simple symbol detection by the means of the amplitude. The node returns a sequence of symbols (sub-bits) that need to be processed to obtain the sequence of received bits (i.e. BitStream).

Constructor & Destructor Documentation

template<class Scalar >

sdr::ASKDetector< Scalar >::ASKDetector ( bool  invert = false )

inline

Constructor.

Member Function Documentation

template<class Scalar >

void sdr::ASKDetector< Scalar >::config ( const Config &  src_cfg )

inlinevirtual

Needs to be implemented by any sub-type to check and perform the configuration of the node.

Implements sdr::SinkBase.

template<class Scalar >

void sdr::ASKDetector< Scalar >::process ( const Buffer< Scalar > &  buffer, bool  allow_overwrite  )

inlinevirtual

Needs to be implemented by any sub-type to process the received data.

Implements sdr::Sink< Scalar >.

Member Data Documentation

template<class Scalar >

Buffer<uint8_t> sdr::ASKDetector< Scalar >::_buffer

protected

The output buffer.

template<class Scalar >

bool sdr::ASKDetector< Scalar >::_invert

protected

If true the symbol logic is inverted.

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

• /Users/hannes/Uni/Elektronik/sdr/libsdr/src/fsk.hh