gr::filter::pfb_synthesizer_ccf
gr::sync_interpolator
gnuradio/filter/pfb_synthesizer_ccf.h
std::shared_ptr< pfb_synthesizer_ccf > typedef std::shared_ptr<pfb_synthesizer_ccf> gr::filter::pfb_synthesizer_ccf::sptr sptr gr::filter::pfb_synthesizer_ccf::sptr
sptr static sptr gr::filter::pfb_synthesizer_ccf::make (unsigned int numchans, const std::vector< float > &taps, bool twox=false) make gr::filter::pfb_synthesizer_ccf::make unsigned int numchans const std::vector< float > & taps bool twox false

Build the polyphase synthesis filterbank. numchans

(unsigned integer) Specifies the number of channels M

taps

(vector/list of floats) The prototype filter to populate the filterbank.

twox

(bool) use 2x oversampling or not (default is no)

taps
void virtual void gr::filter::pfb_synthesizer_ccf::set_taps (const std::vector< float > &taps)=0 set_taps gr::filter::pfb_synthesizer_ccf::set_taps const std::vector< float > & taps

Resets the filterbank's filter taps with the new prototype filter taps

(vector/list of floats) The prototype filter to populate the filterbank.

taps
void virtual void gr::filter::pfb_synthesizer_ccf::print_taps ()=0 print_taps gr::filter::pfb_synthesizer_ccf::print_taps

Print all of the filterbank taps to screen.

std::vector< std::vector< float > > virtual std::vector< std::vector< float > > gr::filter::pfb_synthesizer_ccf::taps () const =0 taps gr::filter::pfb_synthesizer_ccf::taps

Return a vector<vector<>> of the filterbank taps

make
set_taps
void virtual void gr::filter::pfb_synthesizer_ccf::set_channel_map (const std::vector< int > &map)=0 set_channel_map gr::filter::pfb_synthesizer_ccf::set_channel_map const std::vector< int > & map

Set the channel map. Channels are numbers as: N/2+1 | ... | N-1 | 0 | 1 | 2 | ... | N/2 <------------------- 0 --------------------> freq

So input stream 0 goes to channel 0, etc. Setting a new channel map allows the user to specify where in frequency he/she wants the input stream to go. This is especially useful to avoid putting signals into the channels on the edge of the spectrum which can either wrap around (in the case of odd number of channels) and be affected by filter rolloff in the transmitter.

The map must be at least the number of streams being sent to the block. Less and the algorithm will not have enough data to properly setup the buffers. Any more channels specified will be ignored.

std::vector< int > virtual std::vector< int > gr::filter::pfb_synthesizer_ccf::channel_map () const =0 channel_map gr::filter::pfb_synthesizer_ccf::channel_map

Gets the current channel map.

Polyphase synthesis filterbank with gr_complex input, gr_complex output and float taps.

The PFB synthesis filterbank combines multiple baseband signals into a single channelized signal. Each input stream is, essentially, modulated onto an output channel according the the channel mapping (see set_channel_map for details).

Setting this filterbank up means selecting the number of output channels, the prototype filter, and whether to handle channels at 2x the sample rate (this is generally used only for reconstruction filtering).

The number of channels sets the maximum number of channels to use, but not all input streams must be connected. For M total channels, we can connect inputs 0 to N where N < M-1. Because of the way GNU Radio handles stream connections, we must connect the channels consecutively, and so we must use the set_channel_map if the desired output channels are not the same as the the default mapping. This features gives us the flexibility to output to any given channel. Generally, we try to not use the channels at the edge of the spectrum to avoid issues with filtering and roll-off of the transmitter or receiver.

When using the 2x sample rate mode, we specify the number of channels that will be used. However, the actual output signal will be twice this number of channels. This is mainly important to know when setting the channel map. For M channels, the channel mapping can specy from 0 to 2M-1 channels to output onto.

For more details about this and the concepts of reconstruction filtering, see:

f. harris, "Multirate Signal Processing for Communication Systems," Upper Saddle River, NJ: Prentice Hall, Inc. 2004.

X. Chen, E. Venosa, and fred harris, “Polyphase analysis filter bank up-converts unequal channel bandwidths with arbitrary center frequencies - design ii,” in SDR’10-WinnComm, 2010.

E. Venosa, X. Chen, and fred harris, “Polyphase analysis filter bank down-converts unequal channel bandwidths with arbitrary center frequencies - design I,” in SDR’10-WinnComm, 2010.

f. j. harris, C. Dick, X. Chen, and E. Venosa, “Wideband 160- channel polyphase filter bank cable TV channeliser,” in IET Signal Processing, 2010.

gr::basic_block
gr::block
gr::filter::pfb_synthesizer_ccf
gr::messages::msg_accepter
gr::msg_accepter
gr::sync_block
gr::sync_interpolator
std::enable_shared_from_this< basic_block >
gr::basic_block
d_name
d_symbol_alias
d_symbol_name
d_input_signature
d_output_signature
d_debug_logger
d_logger
msg_queue
d_rpc_vars
d_message_subscribers
gr::block
d_max_output_buffer
d_min_output_buffer
d_pmt_done
d_system_port
gr::filter::pfb_synthesizer_ccf
gr::messages::msg_accepter
gr::msg_accepter
gr::sync_block
gr::sync_interpolator
std::basic_string< Char >
std::enable_shared_from_this< basic_block >
std::map< pmt::pmt_t, msg_queue_t, msg_queue_comparator >
std::shared_ptr< io_signature >
std::shared_ptr< logger >
std::shared_ptr< pmt_base >
std::shared_ptr< rpcbasic_base >
std::string
std::vector< long >
std::vector< rpcbasic_sptr >
elements
p
- gr::filter::pfb_synthesizer_ccf
  _post
- gr::filter::pfb_synthesizer_ccf
  active_thread_priority
- gr::filter::pfb_synthesizer_ccf
  add_item_tag
- gr::filter::pfb_synthesizer_ccf
  add_item_tag
- gr::filter::pfb_synthesizer_ccf
  alias
- gr::filter::pfb_synthesizer_ccf
  alias_pmt
- gr::filter::pfb_synthesizer_ccf
  alias_set
- gr::filter::pfb_synthesizer_ccf
  alignment
- gr::filter::pfb_synthesizer_ccf
  allocate_buffer
- gr::filter::pfb_synthesizer_ccf
  allocate_detail
- gr::filter::pfb_synthesizer_ccf
  basic_block
- gr::filter::pfb_synthesizer_ccf
  basic_block
- gr::filter::pfb_synthesizer_ccf
  BLACK
- gr::filter::pfb_synthesizer_ccf
  blkd_input_timer_value
- gr::filter::pfb_synthesizer_ccf
  block
- gr::filter::pfb_synthesizer_ccf
  block
- gr::filter::pfb_synthesizer_ccf
  channel_map
- gr::filter::pfb_synthesizer_ccf
  check_topology
- gr::filter::pfb_synthesizer_ccf
  clear_finished
- gr::filter::pfb_synthesizer_ccf
  color
- gr::filter::pfb_synthesizer_ccf
  consume
- gr::filter::pfb_synthesizer_ccf
  consume_each
- gr::filter::pfb_synthesizer_ccf
  d_blkd_input_timer_value
- gr::filter::pfb_synthesizer_ccf
  d_color
- gr::filter::pfb_synthesizer_ccf
  d_debug_logger
- gr::filter::pfb_synthesizer_ccf
  d_input_signature
- gr::filter::pfb_synthesizer_ccf
  d_logger
- gr::filter::pfb_synthesizer_ccf
  d_max_output_buffer
- gr::filter::pfb_synthesizer_ccf
  d_message_subscribers
- gr::filter::pfb_synthesizer_ccf
  d_min_output_buffer
- gr::filter::pfb_synthesizer_ccf
  d_name
- gr::filter::pfb_synthesizer_ccf
  d_output_signature
- gr::filter::pfb_synthesizer_ccf
  d_pmt_done
- gr::filter::pfb_synthesizer_ccf
  d_rpc_set
- gr::filter::pfb_synthesizer_ccf
  d_rpc_vars
- gr::filter::pfb_synthesizer_ccf
  d_setlock
- gr::filter::pfb_synthesizer_ccf
  d_symbol_alias
- gr::filter::pfb_synthesizer_ccf
  d_symbol_name
- gr::filter::pfb_synthesizer_ccf
  d_symbolic_id
- gr::filter::pfb_synthesizer_ccf
  d_system_port
- gr::filter::pfb_synthesizer_ccf
  d_unique_id
- gr::filter::pfb_synthesizer_ccf
  declare_sample_delay
- gr::filter::pfb_synthesizer_ccf
  declare_sample_delay
- gr::filter::pfb_synthesizer_ccf
  delete_head_nowait
- gr::filter::pfb_synthesizer_ccf
  detail
- gr::filter::pfb_synthesizer_ccf
  dispatch_msg
- gr::filter::pfb_synthesizer_ccf
  empty_handled_p
- gr::filter::pfb_synthesizer_ccf
  empty_handled_p
- gr::filter::pfb_synthesizer_ccf
  empty_p
- gr::filter::pfb_synthesizer_ccf
  empty_p
- gr::filter::pfb_synthesizer_ccf
  enable_update_rate
- gr::filter::pfb_synthesizer_ccf
  erase_msg
- gr::filter::pfb_synthesizer_ccf
  expand_minmax_buffer
- gr::filter::pfb_synthesizer_ccf
  finished
- gr::filter::pfb_synthesizer_ccf
  fixed_rate
- gr::filter::pfb_synthesizer_ccf
  fixed_rate_ninput_to_noutput
- gr::filter::pfb_synthesizer_ccf
  fixed_rate_noutput_to_ninput
- gr::filter::pfb_synthesizer_ccf
  forecast
- gr::filter::pfb_synthesizer_ccf
  general_work
- gr::filter::pfb_synthesizer_ccf
  get_iterator
- gr::filter::pfb_synthesizer_ccf
  get_msg_map
- gr::filter::pfb_synthesizer_ccf
  get_tags_in_range
- gr::filter::pfb_synthesizer_ccf
  get_tags_in_range
- gr::filter::pfb_synthesizer_ccf
  get_tags_in_window
- gr::filter::pfb_synthesizer_ccf
  get_tags_in_window
- gr::filter::pfb_synthesizer_ccf
  GREY
- gr::filter::pfb_synthesizer_ccf
  has_msg_handler
- gr::filter::pfb_synthesizer_ccf
  has_msg_port
- gr::filter::pfb_synthesizer_ccf
  history
- gr::filter::pfb_synthesizer_ccf
  identifier
- gr::filter::pfb_synthesizer_ccf
  input_signature
- gr::filter::pfb_synthesizer_ccf
  insert_tail
- gr::filter::pfb_synthesizer_ccf
  interpolation
- gr::filter::pfb_synthesizer_ccf
  is_pc_rpc_set
- gr::filter::pfb_synthesizer_ccf
  is_rpc_set
- gr::filter::pfb_synthesizer_ccf
  is_set_max_noutput_items
- gr::filter::pfb_synthesizer_ccf
  is_unaligned
- gr::filter::pfb_synthesizer_ccf
  log_level
- gr::filter::pfb_synthesizer_ccf
  make
- gr::filter::pfb_synthesizer_ccf
  max_noutput_items
- gr::filter::pfb_synthesizer_ccf
  max_output_buffer
- gr::filter::pfb_synthesizer_ccf
  message_port_is_hier
- gr::filter::pfb_synthesizer_ccf
  message_port_is_hier_in
- gr::filter::pfb_synthesizer_ccf
  message_port_is_hier_out
- gr::filter::pfb_synthesizer_ccf
  message_port_pub
- gr::filter::pfb_synthesizer_ccf
  message_port_register_in
- gr::filter::pfb_synthesizer_ccf
  message_port_register_out
- gr::filter::pfb_synthesizer_ccf
  message_port_sub
- gr::filter::pfb_synthesizer_ccf
  message_port_unsub
- gr::filter::pfb_synthesizer_ccf
  message_ports_in
- gr::filter::pfb_synthesizer_ccf
  message_ports_out
- gr::filter::pfb_synthesizer_ccf
  message_subscribers
- gr::filter::pfb_synthesizer_ccf
  min_noutput_items
- gr::filter::pfb_synthesizer_ccf
  min_output_buffer
- gr::filter::pfb_synthesizer_ccf
  mp_relative_rate
- gr::filter::pfb_synthesizer_ccf
  msg_accepter
- gr::filter::pfb_synthesizer_ccf
  msg_queue
- gr::filter::pfb_synthesizer_ccf
  name
- gr::filter::pfb_synthesizer_ccf
  nitems_read
- gr::filter::pfb_synthesizer_ccf
  nitems_written
- gr::filter::pfb_synthesizer_ccf
  nmsgs
- gr::filter::pfb_synthesizer_ccf
  no_pc_rpc
- gr::filter::pfb_synthesizer_ccf
  notify_msg_neighbors
- gr::filter::pfb_synthesizer_ccf
  output_multiple
- gr::filter::pfb_synthesizer_ccf
  output_multiple_set
- gr::filter::pfb_synthesizer_ccf
  output_signature
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full_avg
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full_avg
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full_var
- gr::filter::pfb_synthesizer_ccf
  pc_input_buffers_full_var
- gr::filter::pfb_synthesizer_ccf
  pc_noutput_items
- gr::filter::pfb_synthesizer_ccf
  pc_noutput_items_avg
- gr::filter::pfb_synthesizer_ccf
  pc_noutput_items_var
- gr::filter::pfb_synthesizer_ccf
  pc_nproduced
- gr::filter::pfb_synthesizer_ccf
  pc_nproduced_avg
- gr::filter::pfb_synthesizer_ccf
  pc_nproduced_var
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full_avg
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full_avg
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full_var
- gr::filter::pfb_synthesizer_ccf
  pc_output_buffers_full_var
- gr::filter::pfb_synthesizer_ccf
  pc_throughput_avg
- gr::filter::pfb_synthesizer_ccf
  pc_work_time
- gr::filter::pfb_synthesizer_ccf
  pc_work_time_avg
- gr::filter::pfb_synthesizer_ccf
  pc_work_time_total
- gr::filter::pfb_synthesizer_ccf
  pc_work_time_var
- gr::filter::pfb_synthesizer_ccf
  post
- gr::filter::pfb_synthesizer_ccf
  print_taps
- gr::filter::pfb_synthesizer_ccf
  processor_affinity
- gr::filter::pfb_synthesizer_ccf
  produce
- gr::filter::pfb_synthesizer_ccf
  relative_rate
- gr::filter::pfb_synthesizer_ccf
  relative_rate_d
- gr::filter::pfb_synthesizer_ccf
  relative_rate_i
- gr::filter::pfb_synthesizer_ccf
  remove_item_tag
- gr::filter::pfb_synthesizer_ccf
  remove_item_tag
- gr::filter::pfb_synthesizer_ccf
  replace_buffer
- gr::filter::pfb_synthesizer_ccf
  reset_perf_counters
- gr::filter::pfb_synthesizer_ccf
  rpc_set
- gr::filter::pfb_synthesizer_ccf
  sample_delay
- gr::filter::pfb_synthesizer_ccf
  set_alignment
- gr::filter::pfb_synthesizer_ccf
  set_blkd_input_timer_value
- gr::filter::pfb_synthesizer_ccf
  set_block_alias
- gr::filter::pfb_synthesizer_ccf
  set_channel_map
- gr::filter::pfb_synthesizer_ccf
  set_color
- gr::filter::pfb_synthesizer_ccf
  set_detail
- gr::filter::pfb_synthesizer_ccf
  set_fixed_rate
- gr::filter::pfb_synthesizer_ccf
  set_history
- gr::filter::pfb_synthesizer_ccf
  set_input_signature
- gr::filter::pfb_synthesizer_ccf
  set_interpolation
- gr::filter::pfb_synthesizer_ccf
  set_inverse_relative_rate
- gr::filter::pfb_synthesizer_ccf
  set_is_unaligned
- gr::filter::pfb_synthesizer_ccf
  set_log_level
- gr::filter::pfb_synthesizer_ccf
  set_max_noutput_items
- gr::filter::pfb_synthesizer_ccf
  set_max_output_buffer
- gr::filter::pfb_synthesizer_ccf
  set_max_output_buffer
- gr::filter::pfb_synthesizer_ccf
  set_min_noutput_items
- gr::filter::pfb_synthesizer_ccf
  set_min_output_buffer
- gr::filter::pfb_synthesizer_ccf
  set_min_output_buffer
- gr::filter::pfb_synthesizer_ccf
  set_msg_handler
- gr::filter::pfb_synthesizer_ccf
  set_output_multiple
- gr::filter::pfb_synthesizer_ccf
  set_output_signature
- gr::filter::pfb_synthesizer_ccf
  set_processor_affinity
- gr::filter::pfb_synthesizer_ccf
  set_relative_rate
- gr::filter::pfb_synthesizer_ccf
  set_relative_rate
- gr::filter::pfb_synthesizer_ccf
  set_tag_propagation_policy
- gr::filter::pfb_synthesizer_ccf
  set_taps
- gr::filter::pfb_synthesizer_ccf
  set_thread_priority
- gr::filter::pfb_synthesizer_ccf
  set_unaligned
- gr::filter::pfb_synthesizer_ccf
  setup_pc_rpc
- gr::filter::pfb_synthesizer_ccf
  setup_rpc
- gr::filter::pfb_synthesizer_ccf
  shared_from_base
- gr::filter::pfb_synthesizer_ccf
  sptr
- gr::filter::pfb_synthesizer_ccf
  start
- gr::filter::pfb_synthesizer_ccf
  stop
- gr::filter::pfb_synthesizer_ccf
  symbol_name
- gr::filter::pfb_synthesizer_ccf
  symbolic_id
- gr::filter::pfb_synthesizer_ccf
  sync_block
- gr::filter::pfb_synthesizer_ccf
  sync_block
- gr::filter::pfb_synthesizer_ccf
  sync_interpolator
- gr::filter::pfb_synthesizer_ccf
  sync_interpolator
- gr::filter::pfb_synthesizer_ccf
  system_handler
- gr::filter::pfb_synthesizer_ccf
  tag_propagation_policy
- gr::filter::pfb_synthesizer_ccf
  tag_propagation_policy_t
- gr::filter::pfb_synthesizer_ccf
  taps
- gr::filter::pfb_synthesizer_ccf
  thread_priority
- gr::filter::pfb_synthesizer_ccf
  to_basic_block
- gr::filter::pfb_synthesizer_ccf
  TPP_ALL_TO_ALL
- gr::filter::pfb_synthesizer_ccf
  TPP_CUSTOM
- gr::filter::pfb_synthesizer_ccf
  TPP_DONT
- gr::filter::pfb_synthesizer_ccf
  TPP_ONE_TO_ONE
- gr::filter::pfb_synthesizer_ccf
  unaligned
- gr::filter::pfb_synthesizer_ccf
  unique_id
- gr::filter::pfb_synthesizer_ccf
  unset_max_noutput_items
- gr::filter::pfb_synthesizer_ccf
  unset_processor_affinity
- gr::filter::pfb_synthesizer_ccf
  update_rate
- gr::filter::pfb_synthesizer_ccf
  vcolor
- gr::filter::pfb_synthesizer_ccf
  WHITE
- gr::filter::pfb_synthesizer_ccf
  work
- gr::filter::pfb_synthesizer_ccf
  WORK_CALLED_PRODUCE
- gr::filter::pfb_synthesizer_ccf
  WORK_DONE
- gr::filter::pfb_synthesizer_ccf
  work_return_t
- gr::filter::pfb_synthesizer_ccf
  ~basic_block
- gr::filter::pfb_synthesizer_ccf
  ~block
- gr::filter::pfb_synthesizer_ccf
  ~msg_accepter