From 65bd288a2804ef10c5ccac322cb5209907bb5d96 Mon Sep 17 00:00:00 2001
From: Josh Morman <jmorman@perspectalabs.com>
Date: Thu, 25 Mar 2021 11:14:55 -0400
Subject: digital: remove deprecated equalizers
Signed-off-by: Josh Morman <jmorman@perspectalabs.com>
---
gr-digital/lib/lms_dd_equalizer_cc_impl.cc | 120 -----------------------------
1 file changed, 120 deletions(-)
delete mode 100644 gr-digital/lib/lms_dd_equalizer_cc_impl.cc
(limited to 'gr-digital/lib/lms_dd_equalizer_cc_impl.cc')
diff --git a/gr-digital/lib/lms_dd_equalizer_cc_impl.cc b/gr-digital/lib/lms_dd_equalizer_cc_impl.cc
deleted file mode 100644
index ad40171964..0000000000
--- a/gr-digital/lib/lms_dd_equalizer_cc_impl.cc
+++ /dev/null
@@ -1,120 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2011,2012 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * SPDX-License-Identifier: GPL-3.0-or-later
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "lms_dd_equalizer_cc_impl.h"
-#include <gnuradio/io_signature.h>
-#include <gnuradio/misc.h>
-#include <volk/volk.h>
-
-namespace gr {
-namespace digital {
-
-using namespace filter::kernel;
-
-lms_dd_equalizer_cc::sptr
-lms_dd_equalizer_cc::make(int num_taps, float mu, int sps, constellation_sptr cnst)
-{
- return gnuradio::make_block_sptr<lms_dd_equalizer_cc_impl>(num_taps, mu, sps, cnst);
-}
-
-lms_dd_equalizer_cc_impl::lms_dd_equalizer_cc_impl(int num_taps,
- float mu,
- int sps,
- constellation_sptr cnst)
- : sync_decimator("lms_dd_equalizer_cc",
- io_signature::make(1, 1, sizeof(gr_complex)),
- io_signature::make(1, 1, sizeof(gr_complex)),
- sps),
- fir_filter_ccc(std::vector<gr_complex>(num_taps, gr_complex(0, 0))),
- d_new_taps(num_taps, gr_complex(0, 0)),
- d_updated(false),
- d_cnst(cnst)
-{
- set_gain(mu);
- if (num_taps > 0)
- d_new_taps[0] = 1.0;
- fir_filter_ccc::set_taps(d_new_taps);
-
- const int alignment_multiple = volk_get_alignment() / sizeof(gr_complex);
- set_alignment(std::max(1, alignment_multiple));
-
- set_history(num_taps);
-}
-
-lms_dd_equalizer_cc_impl::~lms_dd_equalizer_cc_impl() {}
-
-void lms_dd_equalizer_cc_impl::set_taps(const std::vector<gr_complex>& taps)
-{
- d_new_taps = taps;
- d_updated = true;
-}
-
-std::vector<gr_complex> lms_dd_equalizer_cc_impl::taps() const { return d_taps; }
-
-gr_complex lms_dd_equalizer_cc_impl::error(const gr_complex& out)
-{
- gr_complex decision, error;
- // The `map_to_points` function will treat `decision` as an array pointer.
- // This call is "safe" because `map_to_points` is limited by the
- // dimensionality of the constellation. This class calls the
- // `constellation` class default constructor, which initializes the
- // dimensionality value to `1`. Thus, Only the single `gr_complex` value
- // will be dereferenced.
- d_cnst->map_to_points(d_cnst->decision_maker(&out), &decision);
- error = decision - out;
- return error;
-}
-
-void lms_dd_equalizer_cc_impl::update_tap(gr_complex& tap, const gr_complex& in)
-{
- tap += d_mu * conj(in) * d_error;
-}
-
-int lms_dd_equalizer_cc_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];
-
- if (d_updated) {
- d_taps = d_new_taps;
- set_history(d_taps.size());
- d_updated = false;
- return 0; // history requirements may have changed.
- }
-
- int j = 0;
- size_t k, l = d_taps.size();
- for (int i = 0; i < noutput_items; i++) {
- out[i] = filter(&in[j]);
-
- // Adjust taps
- d_error = error(out[i]);
- for (k = 0; k < l; k++) {
- // Update tap locally from error.
- update_tap(d_taps[k], in[j + k]);
-
- // Update aligned taps in filter object.
- fir_filter_ccc::update_tap(d_taps[k], k);
- }
-
- j += decimation();
- }
-
- return noutput_items;
-}
-
-} /* namespace digital */
-} /* namespace gr */
--
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