diff options
Diffstat (limited to 'gr-digital/lib/digital_ofdm_carrier_allocator_cvc.cc')
| -rw-r--r-- | gr-digital/lib/digital_ofdm_carrier_allocator_cvc.cc | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/gr-digital/lib/digital_ofdm_carrier_allocator_cvc.cc b/gr-digital/lib/digital_ofdm_carrier_allocator_cvc.cc deleted file mode 100644 index e5b3013302..0000000000 --- a/gr-digital/lib/digital_ofdm_carrier_allocator_cvc.cc +++ /dev/null @@ -1,156 +0,0 @@ -/* -*- c++ -*- */ -/* Copyright 2012 Free Software Foundation, Inc. - * - * This file is part of GNU Radio - * - * GNU Radio is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3, or (at your option) - * any later version. - * - * GNU Radio is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU Radio; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <gr_io_signature.h> -#include "digital_ofdm_carrier_allocator_cvc.h" - -digital_ofdm_carrier_allocator_cvc_sptr -digital_make_ofdm_carrier_allocator_cvc ( - int fft_len, - const std::vector<std::vector<int> > &occupied_carriers, - const std::vector<std::vector<int> > &pilot_carriers, - const std::vector<std::vector<gr_complex> > &pilot_symbols, - const std::string &len_tag_key) -{ - return gnuradio::get_initial_sptr (new digital_ofdm_carrier_allocator_cvc(fft_len, occupied_carriers, pilot_carriers, pilot_symbols, len_tag_key)); -} - - -digital_ofdm_carrier_allocator_cvc::digital_ofdm_carrier_allocator_cvc ( - int fft_len, - const std::vector<std::vector<int> > &occupied_carriers, - const std::vector<std::vector<int> > &pilot_carriers, - const std::vector<std::vector<gr_complex> > &pilot_symbols, - const std::string &len_tag_key) - : gr_tagged_stream_block ("ofdm_carrier_allocator_cvc", - gr_make_io_signature(1, 1, sizeof (gr_complex)), - gr_make_io_signature(1, 1, sizeof (gr_complex) * fft_len), len_tag_key), - d_fft_len(fft_len), - d_occupied_carriers(occupied_carriers), - d_pilot_carriers(pilot_carriers), - d_pilot_symbols(pilot_symbols), - d_symbols_per_set(0) -{ - for (unsigned i = 0; i < d_occupied_carriers.size(); i++) { - for (unsigned j = 0; j < d_occupied_carriers[i].size(); j++) { - if (occupied_carriers[i][j] < 0) { - d_occupied_carriers[i][j] += d_fft_len; - } - if (d_occupied_carriers[i][j] > d_fft_len || d_occupied_carriers[i][j] < 0) { - throw std::invalid_argument("data carrier index out of bounds"); - } - } - } - for (unsigned i = 0; i < d_pilot_carriers.size(); i++) { - if (d_pilot_carriers[i].size() != pilot_symbols[i].size()) { - throw std::invalid_argument("pilot_carriers do not match pilot_symbols"); - } - for (unsigned j = 0; j < d_pilot_carriers[i].size(); j++) { - if (d_pilot_carriers[i][j] < 0) { - d_pilot_carriers[i][j] += d_fft_len; - } - if (d_pilot_carriers[i][j] > d_fft_len || d_pilot_carriers[i][j] < 0) { - throw std::invalid_argument("pilot carrier index out of bounds"); - } - } - } - - for (unsigned i = 0; i < d_occupied_carriers.size(); i++) { - d_symbols_per_set += d_occupied_carriers[i].size(); - } - set_tag_propagation_policy(TPP_DONT); - set_relative_rate((double) d_symbols_per_set / d_occupied_carriers.size()); -} - - -digital_ofdm_carrier_allocator_cvc::~digital_ofdm_carrier_allocator_cvc() -{ -} - - -int -digital_ofdm_carrier_allocator_cvc::calculate_output_stream_length(const gr_vector_int &ninput_items) -{ - int nin = ninput_items[0]; - int nout = (nin / d_symbols_per_set) * d_occupied_carriers.size(); - int k = 0; - for (int i = 0; i < nin % d_symbols_per_set; k++) { - nout++; - i += d_occupied_carriers[k % d_occupied_carriers.size()].size(); - } - return nout; -} - - -int -digital_ofdm_carrier_allocator_cvc::work (int noutput_items, - gr_vector_int &ninput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) -{ - const gr_complex *in = (const gr_complex *) input_items[0]; - gr_complex *out = (gr_complex *) output_items[0]; - - std::vector<gr_tag_t> tags; - - memset((void *) out, 0x00, sizeof(gr_complex) * d_fft_len * noutput_items); - long n_ofdm_symbols = 0; - int curr_set = 0; - int symbols_to_allocate = d_occupied_carriers[0].size(); - int symbols_allocated = 0; - for (int i = 0; i < ninput_items[0]; i++) { - if (symbols_allocated == 0) { - // Copy all tags associated with these input symbols onto this OFDM symbol - get_tags_in_range(tags, 0, - nitems_read(0)+i, - nitems_read(0)+std::min(i+symbols_to_allocate, (int) ninput_items[0]) - ); - for (unsigned t = 0; t < tags.size(); t++) { - add_item_tag(0, nitems_written(0)+n_ofdm_symbols, - tags[t].key, - tags[t].value); - } - n_ofdm_symbols++; - } - out[(n_ofdm_symbols-1) * d_fft_len + d_occupied_carriers[curr_set][symbols_allocated]] = in[i]; - symbols_allocated++; - if (symbols_allocated == symbols_to_allocate) { - curr_set = (curr_set + 1) % d_occupied_carriers.size(); - symbols_to_allocate = d_occupied_carriers[curr_set].size(); - symbols_allocated = 0; - } - } - // 2) Copy pilot symbols - curr_set = 0; - for (int i = 0; i < n_ofdm_symbols; i++) { - for (unsigned k = 0; k < d_pilot_carriers[curr_set].size(); k++) { - out[i * d_fft_len + d_pilot_carriers[curr_set][k]] = d_pilot_symbols[curr_set][k]; - } - curr_set = (curr_set + 1) % d_pilot_carriers.size(); - } - - return n_ofdm_symbols; -} - |