9 files changed, 393 insertions, 184 deletions
diff --git a/gr-digital/lib/CMakeLists.txt b/gr-digital/lib/CMakeLists.txt
index b075e980d5..cdbe4b83b4 100644
--- a/gr-digital/lib/CMakeLists.txt
+++ b/gr-digital/lib/CMakeLists.txt
@@ -127,8 +127,8 @@ list(APPEND digital_sources
     glfsr_source_b_impl.cc
     glfsr_source_f_impl.cc
     #gmskmod_bc_impl.cc
-    #lms_dd_equalizer_cc_impl.cc
-    #kurtotic_equalizer_cc_impl.cc
+    kurtotic_equalizer_cc_impl.cc
+    lms_dd_equalizer_cc_impl.cc
     map_bb_impl.cc
     mpsk_receiver_cc_impl.cc
     mpsk_snr_est_cc_impl.cc
diff --git a/gr-digital/lib/cma_equalizer_cc_impl.cc b/gr-digital/lib/cma_equalizer_cc_impl.cc
index 6d32e1a64f..fca7c0c6e5 100644
--- a/gr-digital/lib/cma_equalizer_cc_impl.cc
+++ b/gr-digital/lib/cma_equalizer_cc_impl.cc
@@ -49,10 +49,10 @@ namespace gr {
       set_modulus(modulus);
       set_gain(mu);
       if(num_taps > 0)
-	d_new_taps[0] = 1.0;
-      filter::kernel::fir_filter_ccc::set_taps(d_new_taps);
+	d_taps[0] = 1.0;
+      set_taps(d_taps);
 
-      set_history(ntaps());
+      set_history(num_taps+1);
     }
 
     cma_equalizer_cc_impl::~cma_equalizer_cc_impl()
@@ -67,13 +67,6 @@ namespace gr {
       gr_complex *in = (gr_complex *)input_items[0];
       gr_complex *out = (gr_complex *)output_items[0];
 
-      if (d_updated) {
-	filter::kernel::fir_filter_ccc::set_taps(d_new_taps);
-	set_history(ntaps());
-	d_updated = false;
-	return 0;		     // history requirements may have changed.
-      }
-
       int j = 0, k, l = d_taps.size();
       for(int i = 0; i < noutput_items; i++) {
 	out[i] = filter(&in[j]);
diff --git a/gr-digital/lib/cma_equalizer_cc_impl.h b/gr-digital/lib/cma_equalizer_cc_impl.h
index 9ca4214961..9e95d46f02 100644
--- a/gr-digital/lib/cma_equalizer_cc_impl.h
+++ b/gr-digital/lib/cma_equalizer_cc_impl.h
@@ -61,7 +61,7 @@ namespace gr {
       cma_equalizer_cc_impl(int num_taps, float modulus, float mu, int sps);
       ~cma_equalizer_cc_impl();
 
-      float gain() 
+      float gain() const
       {
 	return d_mu;
       }
@@ -74,7 +74,7 @@ namespace gr {
 	d_mu = mu;
       }
     
-      float modulus() 
+      float modulus() const
       {
 	return d_modulus;
       }
diff --git a/gr-digital/lib/digital_kurtotic_equalizer_cc.cc b/gr-digital/lib/digital_kurtotic_equalizer_cc.cc
deleted file mode 100644
index f10ec83482..0000000000
--- a/gr-digital/lib/digital_kurtotic_equalizer_cc.cc
+++ /dev/null
@@ -1,87 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2011,2012 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <digital_kurtotic_equalizer_cc.h>
-#include <gr_io_signature.h>
-#include <volk/volk.h>
-
-digital_kurtotic_equalizer_cc_sptr
-digital_make_kurtotic_equalizer_cc(int num_taps, float mu)
-{
-  return gnuradio::get_initial_sptr
-    (new digital_kurtotic_equalizer_cc(num_taps, mu));
-}
-
-digital_kurtotic_equalizer_cc::digital_kurtotic_equalizer_cc(int num_taps, float mu)
-  : gr_sync_decimator("kurtotic_equalizer_cc",
-		      gr_make_io_signature(1, 1, sizeof(gr_complex)),
-		      gr_make_io_signature(1, 1, sizeof(gr_complex)),
-		      1),
-    gr::filter::kernel::adaptive_fir_ccc(1, std::vector<gr_complex>(num_taps, gr_complex(0,0)))
-{
-  set_gain(mu);
-  if (num_taps > 0)
-    d_taps[0] = 1.0;
-  set_taps(d_taps);
-
-  d_alpha_p = 0.01;
-  d_alpha_q = 0.01;
-  d_alpha_m = 0.01;
-
-  d_p = 0.0f;
-  d_m = 0.0f;
-  d_q = gr_complex(0,0);
-  d_u = gr_complex(0,0);
-
-  const int alignment_multiple =
-    volk_get_alignment() / sizeof(gr_complex);
-  set_alignment(std::max(1,alignment_multiple));
-  set_history(num_taps+1);
-}
-
-int
-digital_kurtotic_equalizer_cc::work(int noutput_items,
-				    gr_vector_const_void_star &input_items,
-				    gr_vector_void_star &output_items)
-{
-  gr_complex *in = (gr_complex *)input_items[0];
-  gr_complex *out = (gr_complex *)output_items[0];
-
-  int j = 0, 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(d_taps[l-k-1], in[j+k]);
-    }
-
-    j += decimation();
-  }
-
-  return noutput_items;
-}
diff --git a/gr-digital/lib/digital_lms_dd_equalizer_cc.cc b/gr-digital/lib/digital_lms_dd_equalizer_cc.cc
deleted file mode 100644
index 5238063fa7..0000000000
--- a/gr-digital/lib/digital_lms_dd_equalizer_cc.cc
+++ /dev/null
@@ -1,83 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2011,2012 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <digital_lms_dd_equalizer_cc.h>
-#include <gr_io_signature.h>
-#include <gr_misc.h>
-#include <volk/volk.h>
-
-digital_lms_dd_equalizer_cc_sptr
-digital_make_lms_dd_equalizer_cc(int num_taps, float mu, int sps,
-				 digital_constellation_sptr cnst)
-{
-  return gnuradio::get_initial_sptr
-    (new digital_lms_dd_equalizer_cc(num_taps, mu, sps, cnst));
-}
-
-digital_lms_dd_equalizer_cc::digital_lms_dd_equalizer_cc(int num_taps, float mu,
-							 int sps,
-							 digital_constellation_sptr cnst)
-  : gr_sync_decimator("lms_dd_equalizer_cc",
-		      gr_make_io_signature(1, 1, sizeof(gr_complex)),
-		      gr_make_io_signature(1, 1, sizeof(gr_complex)),
-		      sps),
-    gr::filter::kernel::adaptive_fir_ccc(sps, std::vector<gr_complex>(num_taps, gr_complex(0,0))),
-    d_cnst(cnst)
-{
-  set_gain(mu);
-  if(num_taps > 0)
-    d_taps[0] = 1.0;
-  set_taps(d_taps);
-
-  const int alignment_multiple =
-    volk_get_alignment() / sizeof(gr_complex);
-  set_alignment(std::max(1,alignment_multiple));
-  set_history(num_taps+1);
-}
-
-int
-digital_lms_dd_equalizer_cc::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];
-
-  int j = 0;
-  size_t l = d_taps.size();
-  for(int i = 0; i < noutput_items; i++) {
-    out[i] = filter(&in[j]);
-
-    d_error = error(out[i]);
-    for(size_t k=0; k < l; k++) {
-      update_tap(d_taps[k], in[i+k]);
-    }
-
-    j += decimation();
-  }
-
-  return noutput_items;
-}
diff --git a/gr-digital/lib/kurtotic_equalizer_cc_impl.cc b/gr-digital/lib/kurtotic_equalizer_cc_impl.cc
new file mode 100644
index 0000000000..c3be3b5d06
--- /dev/null
+++ b/gr-digital/lib/kurtotic_equalizer_cc_impl.cc
@@ -0,0 +1,97 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011,2012 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "kurtotic_equalizer_cc_impl.h"
+#include <gr_io_signature.h>
+#include <volk/volk.h>
+
+namespace gr {
+  namespace digital {
+
+    kurtotic_equalizer_cc::sptr
+    kurtotic_equalizer_cc::make(int num_taps, float mu)
+    {
+      return gnuradio::get_initial_sptr
+	(new kurtotic_equalizer_cc_impl(num_taps, mu));
+    }
+
+    kurtotic_equalizer_cc_impl::kurtotic_equalizer_cc_impl(int num_taps, float mu)
+      : gr_sync_decimator("kurtotic_equalizer_cc",
+			  gr_make_io_signature(1, 1, sizeof(gr_complex)),
+			  gr_make_io_signature(1, 1, sizeof(gr_complex)),
+			  1),
+	filter::kernel::fir_filter_ccc(1, std::vector<gr_complex>(num_taps, gr_complex(0,0)))
+    {
+      set_gain(mu);
+      if(num_taps > 0)
+	d_taps[0] = 1.0;
+      set_taps(d_taps);
+
+      d_alpha_p = 0.01;
+      d_alpha_q = 0.01;
+      d_alpha_m = 0.01;
+
+      d_p = 0.0f;
+      d_m = 0.0f;
+      d_q = gr_complex(0,0);
+      d_u = gr_complex(0,0);
+
+      const int alignment_multiple =
+	volk_get_alignment() / sizeof(gr_complex);
+      set_alignment(std::max(1,alignment_multiple));
+      set_history(num_taps+1);
+    }
+
+    kurtotic_equalizer_cc_impl::~kurtotic_equalizer_cc_impl()
+    {
+    }
+
+    int
+    kurtotic_equalizer_cc_impl::work(int noutput_items,
+				     gr_vector_const_void_star &input_items,
+				     gr_vector_void_star &output_items)
+    {
+      gr_complex *in = (gr_complex *)input_items[0];
+      gr_complex *out = (gr_complex *)output_items[0];
+
+      int j = 0, 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(d_taps[l-k-1], in[j+k]);
+	}
+
+	j += decimation();
+      }
+
+      return noutput_items;
+    }
+
+  } /* namespace digital */
+} /* namespace gr */
diff --git a/gr-digital/lib/kurtotic_equalizer_cc_impl.h b/gr-digital/lib/kurtotic_equalizer_cc_impl.h
new file mode 100644
index 0000000000..0f2ff23808
--- /dev/null
+++ b/gr-digital/lib/kurtotic_equalizer_cc_impl.h
@@ -0,0 +1,108 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011,2012 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.
+ */
+
+#ifndef INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H
+#define	INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H
+
+#include <digital/kurtotic_equalizer_cc.h>
+#include <filter/fir_filter.h>
+#include <gr_math.h>
+#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;
+      bool d_updated;
+      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:
+      virtual gr_complex error(const gr_complex &out) 
+      {
+	// p = E[|z|^2]
+	// q = E[z^2]
+	// m = E[|z|^4]
+	// u = E[kurtosis(z)]
+
+	float nrm = norm(out);
+	gr_complex cnj = 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 - conj(d_q)*out) -
+	   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);
+      }
+
+      virtual void update_tap(gr_complex &tap, const gr_complex &in) 
+      {
+	tap += d_mu*in*d_error;
+      }
+  
+    public:
+      kurtotic_equalizer_cc_impl(int num_taps, float mu);
+      ~kurtotic_equalizer_cc_impl();
+
+      float gain() const { return d_mu; }
+
+      void set_gain(float mu) 
+      {
+	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);
+    };
+
+  } /* namespace digital */
+} /* namespace gr */
+
+#endif /* INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_IMPL_H */
+
diff --git a/gr-digital/lib/lms_dd_equalizer_cc_impl.cc b/gr-digital/lib/lms_dd_equalizer_cc_impl.cc
new file mode 100644
index 0000000000..6c217896c3
--- /dev/null
+++ b/gr-digital/lib/lms_dd_equalizer_cc_impl.cc
@@ -0,0 +1,94 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011,2012 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "lms_dd_equalizer_cc_impl.h"
+#include <gr_io_signature.h>
+#include <gr_misc.h>
+#include <volk/volk.h>
+
+namespace gr {
+  namespace digital {
+
+    lms_dd_equalizer_cc::sptr
+    lms_dd_equalizer_cc::make(int num_taps, float mu, int sps,
+			      constellation_sptr cnst)
+    {
+      return gnuradio::get_initial_sptr
+	(new 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)
+      : gr_sync_decimator("lms_dd_equalizer_cc",
+			  gr_make_io_signature(1, 1, sizeof(gr_complex)),
+			  gr_make_io_signature(1, 1, sizeof(gr_complex)),
+			  sps),
+	filter::kernel::fir_filter_ccc(sps, std::vector<gr_complex>(num_taps, gr_complex(0,0))),
+	d_cnst(cnst)
+    {
+      set_gain(mu);
+      if(num_taps > 0)
+	d_taps[0] = 1.0;
+      set_taps(d_taps);
+
+      const int alignment_multiple =
+	volk_get_alignment() / sizeof(gr_complex);
+      set_alignment(std::max(1,alignment_multiple));
+
+      set_history(num_taps+1);
+    }
+
+    lms_dd_equalizer_cc_impl::~lms_dd_equalizer_cc_impl()
+    {
+    }
+
+    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];
+
+      int j = 0;
+      size_t l = d_taps.size();
+      for(int i = 0; i < noutput_items; i++) {
+	out[i] = filter(&in[j]);
+
+	d_error = error(out[i]);
+	for(size_t k=0; k < l; k++) {
+	  update_tap(d_taps[k], in[i+k]);
+	}
+
+	j += decimation();
+      }
+
+      return noutput_items;
+    }
+
+  } /* namespace digital */
+} /* namespace gr */
diff --git a/gr-digital/lib/lms_dd_equalizer_cc_impl.h b/gr-digital/lib/lms_dd_equalizer_cc_impl.h
new file mode 100644
index 0000000000..aa84a71b4a
--- /dev/null
+++ b/gr-digital/lib/lms_dd_equalizer_cc_impl.h
@@ -0,0 +1,87 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011,2012 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.
+ */
+
+#ifndef INCLUDED_DIGITAL_LMS_DD_EQUALIZER_CC_IMPL_H
+#define INCLUDED_DIGITAL_LMS_DD_EQUALIZER_CC_IMPL_H
+
+#include <digital/lms_dd_equalizer_cc.h>
+#include <filter/fir_filter.h>
+#include <stdexcept>
+
+namespace gr {
+  namespace digital {
+
+    class lms_dd_equalizer_cc_impl
+      : public lms_dd_equalizer_cc, filter::kernel::fir_filter_ccc
+    {
+    private:
+      std::vector<gr_complex> d_new_taps;
+      bool d_updated;
+      gr_complex d_error;
+
+      float d_mu;
+      constellation_sptr d_cnst;
+
+    protected:
+      gr_complex error(const gr_complex &out) 
+      { 
+	gr_complex decision, error;
+	d_cnst->map_to_points(d_cnst->decision_maker(&out), &decision);
+	error = decision - out;
+	return error;
+      }
+
+      void update_tap(gr_complex &tap, const gr_complex &in) 
+      {
+	tap += d_mu*conj(in)*d_error;
+      }
+
+    public:
+      lms_dd_equalizer_cc_impl(int num_taps,
+			       float mu, int sps,
+			       constellation_sptr cnst);
+      ~lms_dd_equalizer_cc_impl();
+
+      float gain() const
+      {
+	return d_mu;
+      }
+  
+      void set_gain(float mu)
+      {
+	if(mu < 0.0f || mu > 1.0f) {
+	  throw std::out_of_range("lms_dd_equalizer_impl::set_mu: Gain value must in [0, 1]");
+	}
+	else {
+	  d_mu = mu;
+	}
+      }
+  
+      int work(int noutput_items,
+	       gr_vector_const_void_star &input_items,
+	       gr_vector_void_star &output_items);
+    };
+
+  } /* namespace digital */
+} /* namespace gr */
+
+#endif /* INCLUDED_DIGITAL_LMS_DD_EQUALIZER_CC_IMPL_H */