1 files changed, 0 insertions, 97 deletions
diff --git a/gr-digital/lib/kurtotic_equalizer_cc_impl.h b/gr-digital/lib/kurtotic_equalizer_cc_impl.h
deleted file mode 100644
index ff56a7b2bd..0000000000
--- a/gr-digital/lib/kurtotic_equalizer_cc_impl.h
+++ /dev/null
@@ -1,97 +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
- *
- */
-
-#ifndef INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H
-#define INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H
-
-#include <gnuradio/digital/kurtotic_equalizer_cc.h>
-#include <gnuradio/filter/fir_filter.h>
-#include <gnuradio/math.h>
-#include <complex>
-#include <stdexcept>
-
-namespace gr {
-namespace digital {
-
-class kurtotic_equalizer_cc_impl : public kurtotic_equalizer_cc,
-                                   filter::kernel::fir_filter_ccc
-{
-private:
-    std::vector<gr_complex> d_new_taps;
-    gr_complex d_error;
-
-    float d_mu;
-    float d_p, d_m;
-    gr_complex d_q, d_u;
-    float d_alpha_p, d_alpha_q, d_alpha_m;
-
-    gr_complex sign(gr_complex x)
-    {
-        float re = (float)(x.real() >= 0.0f);
-        float im = (float)(x.imag() >= 0.0f);
-        return gr_complex(re, im);
-    }
-
-protected:
-    gr_complex error(const gr_complex& out) override
-    {
-        // p = E[|z|^2]
-        // q = E[z^2]
-        // m = E[|z|^4]
-        // u = E[kurtosis(z)]
-
-        float nrm = std::norm(out);
-        gr_complex cnj = std::conj(out);
-        float epsilon_f = 1e-12;
-        gr_complex epsilon_c = gr_complex(1e-12, 1e-12);
-
-        d_p = (1 - d_alpha_p) * d_p + (d_alpha_p)*nrm + epsilon_f;
-        d_q = (1 - d_alpha_q) * d_q + (d_alpha_q)*out * out + epsilon_c;
-        d_m = (1 - d_alpha_m) * d_m + (d_alpha_m)*nrm * nrm + epsilon_f;
-        d_u = d_m - 2.0f * (d_p * d_p) - d_q * d_q;
-
-        gr_complex F =
-            (1.0f / (d_p * d_p * d_p)) *
-            (sign(d_u) * (nrm * cnj - 2.0f * d_p * cnj - std::conj(d_q) * out) -
-             std::abs(d_u) * cnj);
-
-        float re = gr::clip(F.real(), 1.0);
-        float im = gr::clip(F.imag(), 1.0);
-        return gr_complex(re, im);
-    }
-
-    void update_tap(gr_complex& tap, const gr_complex& in) override
-    {
-        tap += d_mu * in * d_error;
-    }
-
-public:
-    kurtotic_equalizer_cc_impl(int num_taps, float mu);
-    ~kurtotic_equalizer_cc_impl() override;
-
-    float gain() const override { return d_mu; }
-
-    void set_gain(float mu) override
-    {
-        if (mu < 0)
-            throw std::out_of_range(
-                "kurtotic_equalizer_cc_impl::set_gain: Gain value must be >= 0");
-        d_mu = mu;
-    }
-
-    int work(int noutput_items,
-             gr_vector_const_void_star& input_items,
-             gr_vector_void_star& output_items) override;
-};
-
-} /* namespace digital */
-} /* namespace gr */
-
-#endif /* INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H */