Implements a PLL which locks to the input frequency and outputs an estimate of that frequency. Useful for FM Demod.input: stream of complex; output: stream of floats. More...

#include <gr_pll_freqdet_cf.h>

Inheritance diagram for gr_pll_freqdet_cf:

Friends
GR_CORE_API gr_pll_freqdet_cf_sptr	gr_make_pll_freqdet_cf (float loop_bw, float max_freq, float min_freq)

Additional Inherited Members
Public Types inherited from gr_block
enum	{ WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 }
	Return options for the work call. More...

enum	tag_propagation_policy_t { TPP_DONT = 0, TPP_ALL_TO_ALL = 1, TPP_ONE_TO_ONE = 2 }

typedef std::deque< pmt::pmt_t >	msg_queue_t

typedef std::map< pmt::pmt_t, msg_queue_t, pmt::pmt_comperator >	msg_queue_map_t

typedef std::map< pmt::pmt_t, msg_queue_t, pmt::pmt_comperator > ::iterator	msg_queue_map_itr

typedef boost::function< void(pmt::pmt_t)>	msg_handler_t

typedef std::map< pmt::pmt_t, msg_handler_t, pmt::pmt_comperator >	d_msg_handlers_t

Public Member Functions inherited from gr_sync_block
	gr_sync_block (void)

	gr_sync_block (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature)

virtual	~gr_sync_block (void)

int	general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	implements work -> calls work More...

Public Member Functions inherited from gr_block
	gr_block (void)

	gr_block (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature)

long	unique_id (void) const

std::string	name (void) const

virtual	~gr_block (void)

gr_io_signature_sptr	input_signature (void) const

gr_io_signature_sptr	output_signature (void) const

void	set_input_signature (gr_io_signature_sptr sig)

void	set_output_signature (gr_io_signature_sptr sig)

virtual bool	check_topology (int ninputs, int noutputs)

virtual void	forecast (int, std::vector< int > &)
	Overload me! I am the forecast. More...

virtual bool	start (void)

virtual bool	stop (void)

void	consume_each (const int how_many_items)
	Call during work to consume items. More...

void	consume (const size_t i, const int how_many_items)

void	produce (const size_t o, const int how_many_items)

uint64_t	nitems_read (const size_t which_input=0)
	Get absolute count of all items consumed on the given input port. More...

uint64_t	nitems_written (const size_t which_output=0)
	Get absolute count of all items produced on the given output port. More...

void	add_item_tag (const size_t which_output, const gr_tag_t &tag)

void	add_item_tag (const size_t which_output, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F)

void	get_tags_in_range (std::vector< gr_tag_t > &tags, const size_t which_input, uint64_t abs_start, uint64_t abs_end, const pmt::pmt_t &key=pmt::pmt_t())

void	set_alignment (const size_t alignment)

bool	is_unaligned (void)

size_t	fixed_rate_noutput_to_ninput (const size_t noutput_items)

size_t	interpolation (void) const

void	set_interpolation (const size_t)

size_t	decimation (void) const

void	set_decimation (const size_t)

int	max_noutput_items (void) const

void	set_max_noutput_items (int)

void	unset_max_noutput_items (void)

bool	is_set_max_noutput_items (void) const

unsigned	history (void) const

void	set_history (unsigned history)

void	set_fixed_rate (const bool fixed_rate)

bool	fixed_rate (void) const
	Get the fixed rate setting. More...

void	set_relative_rate (const double relative_rate)

double	relative_rate (void) const
	Get the relative rate setting. More...

void	set_output_multiple (const size_t multiple)

size_t	output_multiple (void) const
	Get the output multiple setting. More...

tag_propagation_policy_t	tag_propagation_policy (void)

void	set_tag_propagation_policy (tag_propagation_policy_t p)

void	set_max_output_buffer (long)

void	set_max_output_buffer (int, long)

long	max_output_buffer (size_t)

void	set_min_output_buffer (long)

void	set_min_output_buffer (int, long)

long	min_output_buffer (size_t)

std::string	symbol_name () const

bool	alias_set ()

std::string	alias ()

pmt::pmt_t	alias_pmt ()

void	set_block_alias (std::string name)

template<typename T >
void	set_msg_handler (pmt::pmt_t which_port, T msg_handler)

void	message_port_register_in (pmt::pmt_t)

void	message_port_register_out (pmt::pmt_t)

void	message_port_pub (pmt::pmt_t, pmt::pmt_t)

void	message_port_sub (pmt::pmt_t, pmt::pmt_t)

void	message_port_unsub (pmt::pmt_t, pmt::pmt_t)

virtual bool	message_port_is_hier (pmt::pmt_t port_id)

virtual bool	message_port_is_hier_in (pmt::pmt_t port_id)

virtual bool	message_port_is_hier_out (pmt::pmt_t port_id)

pmt::pmt_t	message_ports_in ()
	Get input message port names. More...

pmt::pmt_t	message_ports_out ()
	Get output message port names. More...

bool	empty_p (pmt::pmt_t which_port)
	is the queue empty? More...

bool	empty_p ()

void	insert_tail (pmt::pmt_t, pmt::pmt_t)

pmt::pmt_t	delete_head_nowait (pmt::pmt_t)

pmt::pmt_t	delete_head_blocking (pmt::pmt_t)

msg_queue_t::iterator	get_iterator (pmt::pmt_t which_port)

void	erase_msg (pmt::pmt_t which_port, msg_queue_t::iterator it)

virtual bool	has_msg_port (pmt::pmt_t which_port)

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)

void	set_processor_affinity (const std::vector< int > &mask)
	Set the thread's affinity to processor core `n`. More...

void	unset_processor_affinity ()
	Remove processor affinity to a specific core. More...

std::vector< int >	processor_affinity ()
	Get the current processor affinity. More...

void	work (const InputItems &, const OutputItems &)
	implements work -> calls general work More...

void	notify_topology (const size_t, const size_t)
	notifications of new topological commits More...

void	notify_active (void)
	start notification More...

void	notify_inactive (void)
	stop notification More...

virtual void	propagate_tags (const size_t, const gras::TagIter &)
	implements tag_propagation_policy() More...

void	_update_input_reserve (void)

gras::BufferQueueSptr	input_buffer_allocator (const size_t, const gras::SBufferConfig &)

gras::BufferQueueSptr	output_buffer_allocator (const size_t, const gras::SBufferConfig &)

Public Member Functions inherited from gri_control_loop
	gri_control_loop (float loop_bw, float max_freq, float min_freq)

virtual	~gri_control_loop ()

void	update_gains ()
	update the system gains from the loop bandwidth and damping factor More...

void	advance_loop (float error)
	update the system gains from the loop bandwidth and damping factor More...

void	phase_wrap ()
	Keep the phase between -2pi and 2pi. More...

void	frequency_limit ()
	Keep the frequency between d_min_freq and d_max_freq. More...

void	set_loop_bandwidth (float bw)
	Set the loop bandwidth. More...

void	set_damping_factor (float df)
	Set the loop damping factor. More...

void	set_alpha (float alpha)
	Set the loop gain alpha. More...

void	set_beta (float beta)
	Set the loop gain beta. More...

void	set_frequency (float freq)
	Set the control loop's frequency. More...

void	set_phase (float phase)
	Set the control loop's phase. More...

void	set_max_freq (float freq)
	Set the control loop's maximum frequency. More...

void	set_min_freq (float freq)
	Set the control loop's minimum frequency. More...

float	get_loop_bandwidth () const
	Returns the loop bandwidth. More...

float	get_damping_factor () const
	Returns the loop damping factor. More...

float	get_alpha () const
	Returns the loop gain alpha. More...

float	get_beta () const
	Returns the loop gain beta. More...

float	get_frequency () const
	Get the control loop's frequency estimate. More...

float	get_phase () const
	Get the control loop's phase estimate. More...

float	get_max_freq () const
	Get the control loop's maximum frequency. More...

float	get_min_freq () const
	Get the control loop's minimum frequency. More...

Public Attributes inherited from gr_block
long	_unique_id

std::string	_name

std::string	d_symbol_alias

std::string	d_symbol_name

msg_queue_map_t	msg_queue

pmt::pmt_t	message_subscribers

d_msg_handlers_t	d_msg_handlers

gruel::mutex	d_setlock

std::vector< int >	d_affinity

gr_vector_int	_work_ninput_items

gr_vector_int	_fcast_ninput_items

size_t	_num_outputs

ptrdiff_t	_work_io_ptr_mask

size_t	_output_multiple_items

double	_relative_rate

bool	_enable_fixed_rate

size_t	_input_history_items

tag_propagation_policy_t	_tag_prop_policy

size_t	_interp

size_t	_decim

gr_io_signature_sptr	_in_sig

gr_io_signature_sptr	_out_sig

Protected Attributes inherited from gri_control_loop
float	d_phase

float	d_freq

float	d_max_freq

float	d_min_freq

float	d_damping

float	d_loop_bw

float	d_alpha

float	d_beta

Detailed Description

Implements a PLL which locks to the input frequency and outputs an estimate of that frequency. Useful for FM Demod.

input: stream of complex; output: stream of floats.

This PLL locks onto a [possibly noisy] reference carrier on the input and outputs an estimate of that frequency in radians per sample. All settings max_freq and min_freq are in terms of radians per sample, NOT HERTZ. The loop bandwidth determins the lock range and should be set around pi/200 – 2pi/100.

See Also: gr_pll_refout_cc, gr_pll_carriertracking_cc

Friends And Related Function Documentation

GR_CORE_API gr_pll_freqdet_cf_sptr gr_make_pll_freqdet_cf	(	float	loop_bw,
		float	max_freq,
		float	min_freq
	)

friend

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

gr_pll_freqdet_cf.h

Friends

Additional Inherited Members

Detailed Description

Friends And Related Function Documentation