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/* -*- c++ -*- */
/*
* Copyright 2009,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "channel_model_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace channels {
channel_model::sptr channel_model::make(double noise_voltage,
double frequency_offset,
double epsilon,
const std::vector<gr_complex>& taps,
double noise_seed,
bool block_tags)
{
return gnuradio::make_block_sptr<channel_model_impl>(
noise_voltage, frequency_offset, epsilon, taps, noise_seed, block_tags);
}
// Hierarchical block constructor
channel_model_impl::channel_model_impl(double noise_voltage,
double frequency_offset,
double epsilon,
const std::vector<gr_complex>& taps,
double noise_seed,
bool block_tags)
: hier_block2("channel_model",
io_signature::make(1, 1, sizeof(gr_complex)),
io_signature::make(1, 1, sizeof(gr_complex)))
{
d_taps = taps;
while (d_taps.size() < 2) {
d_taps.push_back(0);
}
d_timing_offset = filter::mmse_resampler_cc::make(0, epsilon);
d_multipath = filter::fir_filter_ccc::make(1, d_taps);
d_noise_adder = blocks::add_cc::make();
d_noise =
analog::fastnoise_source_c::make(analog::GR_GAUSSIAN, noise_voltage, noise_seed);
d_freq_offset =
analog::sig_source_c::make(1, analog::GR_SIN_WAVE, frequency_offset, 1.0, 0.0);
d_mixer_offset = blocks::multiply_cc::make();
connect(self(), 0, d_timing_offset, 0);
connect(d_timing_offset, 0, d_multipath, 0);
connect(d_multipath, 0, d_mixer_offset, 0);
connect(d_freq_offset, 0, d_mixer_offset, 1);
connect(d_mixer_offset, 0, d_noise_adder, 1);
connect(d_noise, 0, d_noise_adder, 0);
connect(d_noise_adder, 0, self(), 0);
if (block_tags) {
d_timing_offset->set_tag_propagation_policy(gr::block::TPP_DONT);
}
}
channel_model_impl::~channel_model_impl() {}
void channel_model_impl::set_noise_voltage(double noise_voltage)
{
d_noise->set_amplitude(noise_voltage);
}
void channel_model_impl::set_frequency_offset(double frequency_offset)
{
d_freq_offset->set_frequency(frequency_offset);
}
void channel_model_impl::set_taps(const std::vector<gr_complex>& taps)
{
d_taps = taps;
while (d_taps.size() < 2) {
d_taps.push_back(0);
}
d_multipath->set_taps(d_taps);
}
void channel_model_impl::set_timing_offset(double epsilon)
{
d_timing_offset->set_resamp_ratio(epsilon);
}
double channel_model_impl::noise_voltage() const { return d_noise->amplitude(); }
double channel_model_impl::frequency_offset() const { return d_freq_offset->frequency(); }
std::vector<gr_complex> channel_model_impl::taps() const { return d_multipath->taps(); }
double channel_model_impl::timing_offset() const
{
return d_timing_offset->resamp_ratio();
}
void channel_model_impl::setup_rpc()
{
#ifdef GR_CTRLPORT
add_rpc_variable(rpcbasic_sptr(
new rpcbasic_register_get<channel_model, double>(alias(),
"noise",
&channel_model::noise_voltage,
pmt::mp(-10.0f),
pmt::mp(10.0f),
pmt::mp(0.0f),
"",
"Noise Voltage",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(
new rpcbasic_register_get<channel_model, double>(alias(),
"freq",
&channel_model::frequency_offset,
pmt::mp(-1.0f),
pmt::mp(1.0f),
pmt::mp(0.0f),
"Hz",
"Frequency Offset",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(
new rpcbasic_register_get<channel_model, double>(alias(),
"timing",
&channel_model::timing_offset,
pmt::mp(0.0),
pmt::mp(2.0),
pmt::mp(0.0),
"",
"Timing Offset",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(
rpcbasic_sptr(new rpcbasic_register_get<channel_model, std::vector<gr_complex>>(
alias(),
"taps",
&channel_model::taps,
pmt::make_c32vector(0, -10),
pmt::make_c32vector(0, 10),
pmt::make_c32vector(0, 0),
"",
"Multipath taps",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTCPLX | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<channel_model, double>(
alias(),
"noise",
&channel_model::set_noise_voltage,
pmt::mp(-10.0),
pmt::mp(10.0),
pmt::mp(0.0),
"V",
"Noise Voltage",
RPC_PRIVLVL_MIN,
DISPNULL)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<channel_model, double>(
alias(),
"freq",
&channel_model::set_frequency_offset,
pmt::mp(-1.0),
pmt::mp(1.0),
pmt::mp(0.0),
"Hz",
"Frequency Offset",
RPC_PRIVLVL_MIN,
DISPNULL)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<channel_model, double>(
alias(),
"timing",
&channel_model::set_timing_offset,
pmt::mp(0.0f),
pmt::mp(2.0f),
pmt::mp(0.0f),
"",
"Timing Offset",
RPC_PRIVLVL_MIN,
DISPNULL)));
#endif /* GR_CTRLPORT */
}
} /* namespace channels */
} /* namespace gr */
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