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gr::channels::dynamic_channel_model Class Referenceabstract

dynamic channel simulator More...

#include <gnuradio/channels/dynamic_channel_model.h>

Public Types

typedef boost::shared_ptr
< dynamic_channel_model
sptr
 
- Public Types inherited from gr::hier_block2
typedef basic_block_sptr opaque_self
 typedef for object returned from self(). More...
 

Public Member Functions

virtual double samp_rate () const =0
 
virtual double sro_dev_std () const =0
 
virtual double sro_dev_max () const =0
 
virtual double cfo_dev_std () const =0
 
virtual double cfo_dev_max () const =0
 
virtual double noise_amp () const =0
 
virtual double doppler_freq () const =0
 
virtual double K () const =0
 
virtual void set_samp_rate (double)=0
 
virtual void set_sro_dev_std (double)=0
 
virtual void set_sro_dev_max (double)=0
 
virtual void set_cfo_dev_std (double)=0
 
virtual void set_cfo_dev_max (double)=0
 
virtual void set_noise_amp (double)=0
 
virtual void set_doppler_freq (double)=0
 
virtual void set_K (double)=0
 
- Public Member Functions inherited from gr::hier_block2
virtual ~hier_block2 ()
 
opaque_self self ()
 Return an object, representing the current block, which can be passed to connect. More...
 
void connect (basic_block_sptr block)
 Add a stand-alone (possibly hierarchical) block to internal graph. More...
 
void connect (basic_block_sptr src, int src_port, basic_block_sptr dst, int dst_port)
 Add gr-blocks or hierarchical blocks to internal graph and wire together. More...
 
void msg_connect (basic_block_sptr src, pmt::pmt_t srcport, basic_block_sptr dst, pmt::pmt_t dstport)
 Add gr-blocks or hierarchical blocks to internal graph and wire together. More...
 
void msg_connect (basic_block_sptr src, std::string srcport, basic_block_sptr dst, std::string dstport)
 
void msg_disconnect (basic_block_sptr src, pmt::pmt_t srcport, basic_block_sptr dst, pmt::pmt_t dstport)
 
void msg_disconnect (basic_block_sptr src, std::string srcport, basic_block_sptr dst, std::string dstport)
 
void disconnect (basic_block_sptr block)
 Remove a gr-block or hierarchical block from the internal flowgraph. More...
 
void disconnect (basic_block_sptr src, int src_port, basic_block_sptr dst, int dst_port)
 Disconnect a pair of gr-blocks or hierarchical blocks in internal flowgraph. More...
 
void disconnect_all ()
 Disconnect all connections in the internal flowgraph. More...
 
virtual void lock ()
 
virtual void unlock ()
 
int max_output_buffer (size_t port=0)
 Returns max buffer size (itemcount) on output port i. More...
 
void set_max_output_buffer (int max_output_buffer)
 Sets max buffer size (itemcount) on all output ports. More...
 
void set_max_output_buffer (size_t port, int max_output_buffer)
 Sets max buffer size (itemcount) on output port port. More...
 
int min_output_buffer (size_t port=0)
 Returns min buffer size (itemcount) on output port i. More...
 
void set_min_output_buffer (int min_output_buffer)
 Sets min buffer size (itemcount) on all output ports. More...
 
void set_min_output_buffer (size_t port, int min_output_buffer)
 Sets min buffer size (itemcount) on output port port. More...
 
flat_flowgraph_sptr flatten () const
 
hier_block2_sptr to_hier_block2 ()
 
bool has_msg_port (pmt::pmt_t which_port)
 
bool message_port_is_hier (pmt::pmt_t port_id)
 
bool message_port_is_hier_in (pmt::pmt_t port_id)
 
bool message_port_is_hier_out (pmt::pmt_t port_id)
 
void message_port_register_hier_in (pmt::pmt_t port_id)
 
void message_port_register_hier_out (pmt::pmt_t port_id)
 
void set_processor_affinity (const std::vector< int > &mask)
 Set the affinity of all blocks in hier_block2 to processor core n. More...
 
void unset_processor_affinity ()
 Remove processor affinity for all blocks in hier_block2. More...
 
std::vector< int > processor_affinity ()
 Get the current processor affinity. More...
 
bool all_min_output_buffer_p (void)
 Get if all block min buffers should be set. More...
 
bool all_max_output_buffer_p (void)
 Get if all block max buffers should be set. More...
 
- Public Member Functions inherited from gr::basic_block
pmt::pmt_t message_subscribers (pmt::pmt_t port)
 
virtual ~basic_block ()
 
long unique_id () const
 
long symbolic_id () const
 
std::string name () const
 
std::string symbol_name () const
 
gr::io_signature::sptr input_signature () const
 
gr::io_signature::sptr output_signature () const
 
basic_block_sptr to_basic_block ()
 
bool alias_set ()
 
std::string alias ()
 
pmt::pmt_t alias_pmt ()
 
void set_block_alias (std::string name)
 
void message_port_register_in (pmt::pmt_t port_id)
 
void message_port_register_out (pmt::pmt_t port_id)
 
void message_port_pub (pmt::pmt_t port_id, pmt::pmt_t msg)
 
void message_port_sub (pmt::pmt_t port_id, pmt::pmt_t target)
 
void message_port_unsub (pmt::pmt_t port_id, pmt::pmt_t target)
 
pmt::pmt_t message_ports_in ()
 Get input message port names. More...
 
pmt::pmt_t message_ports_out ()
 Get output message port names. More...
 
void _post (pmt::pmt_t which_port, pmt::pmt_t msg)
 
bool empty_p (pmt::pmt_t which_port)
 is the queue empty? More...
 
bool empty_p ()
 
bool empty_handled_p (pmt::pmt_t which_port)
 are all msg ports with handlers empty? More...
 
bool empty_handled_p ()
 
size_t nmsgs (pmt::pmt_t which_port)
 How many messages in the queue? More...
 
void insert_tail (pmt::pmt_t which_port, pmt::pmt_t msg)
 
pmt::pmt_t delete_head_nowait (pmt::pmt_t which_port)
 
pmt::pmt_t delete_head_blocking (pmt::pmt_t which_port, unsigned int millisec=0)
 
msg_queue_t::iterator get_iterator (pmt::pmt_t which_port)
 
void erase_msg (pmt::pmt_t which_port, msg_queue_t::iterator it)
 
const msg_queue_map_t & get_msg_map (void) const
 
virtual void setup_rpc ()
 Set up the RPC registered variables. More...
 
bool is_rpc_set ()
 Ask if this block has been registered to the RPC. More...
 
void rpc_set ()
 When the block is registered with the RPC, set this. More...
 
virtual bool check_topology (int ninputs, int noutputs)
 Confirm that ninputs and noutputs is an acceptable combination. More...
 
template<typename T >
void set_msg_handler (pmt::pmt_t which_port, T msg_handler)
 Set the callback that is fired when messages are available. More...
 
- Public Member Functions inherited from gr::msg_accepter
 msg_accepter ()
 
 ~msg_accepter ()
 
void post (pmt::pmt_t which_port, pmt::pmt_t msg)
 send msg to msg_accepter on port which_port More...
 
- Public Member Functions inherited from gr::messages::msg_accepter
 msg_accepter ()
 

Static Public Member Functions

static sptr make (double samp_rate, double sro_std_dev, double sro_max_dev, double cfo_std_dev, double cfo_max_dev, unsigned int N, double doppler_freq, bool LOS_model, float K, std::vector< float > delays, std::vector< float > mags, int ntaps_mpath, double noise_amp, double noise_seed)
 Build the dynamic channel simulator. More...
 

Additional Inherited Members

- Public Attributes inherited from gr::hier_block2
pmt::pmt_t hier_message_ports_in
 
pmt::pmt_t hier_message_ports_out
 
- Protected Types inherited from gr::basic_block
enum  vcolor { WHITE, GREY, BLACK }
 
- Protected Member Functions inherited from gr::hier_block2
 hier_block2 (void)
 
 hier_block2 (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)
 
- Protected Member Functions inherited from gr::basic_block
 basic_block (void)
 
 basic_block (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)
 Protected constructor prevents instantiation by non-derived classes. More...
 
void set_input_signature (gr::io_signature::sptr iosig)
 may only be called during constructor More...
 
void set_output_signature (gr::io_signature::sptr iosig)
 may only be called during constructor More...
 
void set_color (vcolor color)
 Allow the flowgraph to set for sorting and partitioning. More...
 
vcolor color () const
 
virtual bool has_msg_handler (pmt::pmt_t which_port)
 Tests if there is a handler attached to port which_port. More...
 
virtual void dispatch_msg (pmt::pmt_t which_port, pmt::pmt_t msg)
 
- Protected Attributes inherited from gr::basic_block
std::string d_name
 
gr::io_signature::sptr d_input_signature
 
gr::io_signature::sptr d_output_signature
 
long d_unique_id
 
long d_symbolic_id
 
std::string d_symbol_name
 
std::string d_symbol_alias
 
vcolor d_color
 
bool d_rpc_set
 
msg_queue_map_t msg_queue
 
std::vector< boost::any > d_rpc_vars
 
pmt::pmt_t d_message_subscribers
 

Detailed Description

dynamic channel simulator

This block implements a dynamic channel model simulator that can be used to help evaluate, design, and test various signals, waveforms, and algorithms.

This model allows the user to set up an AWGN noise cource, a random walk process to simulate carrier frequency drift, a random walk process to simulate sample rate offset drive, and a frequency selective fading channel response that is either Rayleigh or Ricean for a user specified power delay profile.

Member Typedef Documentation

Member Function Documentation

virtual double gr::channels::dynamic_channel_model::cfo_dev_max ( ) const
pure virtual
virtual double gr::channels::dynamic_channel_model::cfo_dev_std ( ) const
pure virtual
virtual double gr::channels::dynamic_channel_model::doppler_freq ( ) const
pure virtual
virtual double gr::channels::dynamic_channel_model::K ( ) const
pure virtual
static sptr gr::channels::dynamic_channel_model::make ( double  samp_rate,
double  sro_std_dev,
double  sro_max_dev,
double  cfo_std_dev,
double  cfo_max_dev,
unsigned int  N,
double  doppler_freq,
bool  LOS_model,
float  K,
std::vector< float >  delays,
std::vector< float >  mags,
int  ntaps_mpath,
double  noise_amp,
double  noise_seed 
)
static

Build the dynamic channel simulator.

Parameters
samp_rateInput sample rate in Hz
sro_std_devsample rate drift process standard deviation per sample in Hz
sro_max_devmaximum sample rate offset in Hz
cfo_std_devcarrier frequnecy drift process standard deviation per sample in Hz
cfo_max_devmaximum carrier frequency offset in Hz
Nnumber of sinusoids used in frequency selective fading simulation
doppler_freqmaximum doppler frequency used in fading simulation in Hz
LOS_modeldefines whether the fading model should include a line of site component. LOS->Rician, NLOS->Rayleigh
KRician K-factor, the ratio of specular to diffuse power in the model
delaysA list of fractional sample delays making up the power delay profile
magsA list of magnitudes corresponding to each delay time in the power delay profile
ntaps_mpathThe length of the filter to interpolate the power delay profile over. Delays in the PDP must lie between 0 and ntaps_mpath, fractional delays will be sinc-interpolated only to the width of this filter.
noise_ampSpecifies the standard deviation of the AWGN process
noise_seedA random number generator seed for the noise source.
virtual double gr::channels::dynamic_channel_model::noise_amp ( ) const
pure virtual
virtual double gr::channels::dynamic_channel_model::samp_rate ( ) const
pure virtual
virtual void gr::channels::dynamic_channel_model::set_cfo_dev_max ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_cfo_dev_std ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_doppler_freq ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_K ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_noise_amp ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_samp_rate ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_sro_dev_max ( double  )
pure virtual
virtual void gr::channels::dynamic_channel_model::set_sro_dev_std ( double  )
pure virtual
virtual double gr::channels::dynamic_channel_model::sro_dev_max ( ) const
pure virtual
virtual double gr::channels::dynamic_channel_model::sro_dev_std ( ) const
pure virtual

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