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/* -*- c++ -*- */
/*
* Copyright 2013 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.
*/
#include "fading_model_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace channels {
fading_model::sptr
fading_model::make(unsigned int N, float fDTs, bool LOS, float K, int seed)
{
return gnuradio::get_initial_sptr(new fading_model_impl(N, fDTs, LOS, K, seed));
}
// Block constructor
fading_model_impl::fading_model_impl(
unsigned int N, float fDTs, bool LOS, float K, int seed)
: sync_block("fading_model",
io_signature::make(1, 1, sizeof(gr_complex)),
io_signature::make(1, 1, sizeof(gr_complex))),
d_fader(N, fDTs, LOS, K, seed)
{
}
fading_model_impl::~fading_model_impl() {}
void fading_model_impl::setup_rpc()
{
#ifdef GR_CTRLPORT
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_get<fading_model, float>(
alias(),
"fDTs",
&fading_model::fDTs,
pmt::mp(0),
pmt::mp(1),
pmt::mp(0.01),
"Hz*Sec",
"normalized maximum doppler frequency (fD*Ts)",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<fading_model, float>(
alias(),
"fDTs",
&fading_model::set_fDTs,
pmt::mp(0),
pmt::mp(1),
pmt::mp(0.01),
"Hz*Sec",
"normalized maximum doppler frequency (fD*Ts)",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_get<fading_model, float>(
alias(),
"K",
&fading_model::K,
pmt::mp(0),
pmt::mp(8),
pmt::mp(4),
"Ratio",
"Rician factor (ratio of the specular power to the scattered power)",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<fading_model, float>(
alias(),
"K",
&fading_model::set_K,
pmt::mp(0),
pmt::mp(8),
pmt::mp(4),
"Ratio",
"Rician factor (ratio of the specular power to the scattered power)",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_get<fading_model, float>(
alias(),
"step",
&fading_model::step,
pmt::mp(0),
pmt::mp(8),
pmt::mp(4),
"radians",
"Maximum step size for random walk angle per sample",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_set<fading_model, float>(
alias(),
"step",
&fading_model::set_step,
pmt::mp(0),
pmt::mp(1),
pmt::mp(0.00001),
"radians",
"Maximum step size for random walk angle per sample",
RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
#endif /* GR_CTRLPORT */
}
int fading_model_impl::work(int noutput_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_complex> ftaps;
d_fader.next_samples(ftaps, noutput_items);
for (int i = 0; i < noutput_items; i++) {
out[i] = in[i] * ftaps[i];
// out[i] = in[i] * d_fader.next_sample();
}
return noutput_items;
}
} /* namespace channels */
} /* namespace gr */
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