mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-06-24 22:13:15 +00:00
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*!
|
|
* \file beamformer.cc
|
|
*
|
|
* \brief Unpacks byte samples to NSR 2 bits samples
|
|
* \author Javier Arribas jarribas (at) cttc.es
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
|
|
* This file is part of GNSS-SDR.
|
|
*
|
|
* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
|
|
|
|
#include "beamformer.h"
|
|
#include <gnuradio/io_signature.h>
|
|
#include <cstddef>
|
|
|
|
|
|
beamformer_sptr make_beamformer_sptr()
|
|
{
|
|
return beamformer_sptr(new beamformer());
|
|
}
|
|
|
|
|
|
beamformer::beamformer()
|
|
: gr::sync_block("beamformer",
|
|
gr::io_signature::make(GNSS_SDR_BEAMFORMER_CHANNELS, GNSS_SDR_BEAMFORMER_CHANNELS, sizeof(gr_complex)),
|
|
gr::io_signature::make(1, 1, sizeof(gr_complex)))
|
|
{
|
|
}
|
|
|
|
|
|
int beamformer::work(int noutput_items, gr_vector_const_void_star &input_items,
|
|
gr_vector_void_star &output_items)
|
|
{
|
|
auto *out = reinterpret_cast<gr_complex *>(output_items[0]);
|
|
// channel output buffers
|
|
// gr_complex *ch1 = (gr_complex *) input_items[0];
|
|
// gr_complex *ch2 = (gr_complex *) input_items[1];
|
|
// gr_complex *ch3 = (gr_complex *) input_items[2];
|
|
// gr_complex *ch4 = (gr_complex *) input_items[3];
|
|
// gr_complex *ch5 = (gr_complex *) input_items[4];
|
|
// gr_complex *ch6 = (gr_complex *) input_items[5];
|
|
// gr_complex *ch7 = (gr_complex *) input_items[6];
|
|
// gr_complex *ch8 = (gr_complex *) input_items[7];
|
|
|
|
// NON-VOLK beamforming operation
|
|
// TODO: Implement VOLK SIMD-accelerated beamformer!
|
|
gr_complex sum;
|
|
for (int n = 0; n < noutput_items; n++)
|
|
{
|
|
sum = gr_complex(0, 0);
|
|
for (size_t i = 0; i < weight_vector.size(); i++)
|
|
{
|
|
sum = sum + (reinterpret_cast<const gr_complex *>(input_items[i]))[n] * weight_vector[i];
|
|
}
|
|
out[n] = sum;
|
|
}
|
|
|
|
return noutput_items;
|
|
}
|