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diff --git a/gr-digital/lib/ofdm_mapper_bcv_impl.h b/gr-digital/lib/ofdm_mapper_bcv_impl.h
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+++ b/gr-digital/lib/ofdm_mapper_bcv_impl.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2007,2011,2012 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_OFDM_MAPPER_BCV_IMPL_H
+#define INCLUDED_DIGITAL_OFDM_MAPPER_BCV_IMPL_H
+
+#include <digital/ofdm_mapper_bcv.h>
+#include <gr_message.h>
+#include <vector>
+
+namespace gr {
+  namespace digital {
+
+    class ofdm_mapper_bcv_impl : public ofdm_mapper_bcv
+    {
+    private:
+      std::vector<gr_complex> d_constellation;
+      gr_msg_queue_sptr d_msgq;
+      gr_message_sptr   d_msg;
+      unsigned          d_msg_offset;
+      bool              d_eof;
+  
+      unsigned int d_occupied_carriers;
+      unsigned int d_fft_length;
+      unsigned int d_bit_offset;
+      int          d_pending_flag;
+
+      unsigned long d_nbits;
+      unsigned char d_msgbytes;
+  
+      unsigned char d_resid;
+      unsigned int  d_nresid;
+
+      std::vector<int> d_subcarrier_map;
+
+      int randsym();
+
+    public:
+      ofdm_mapper_bcv_impl(const std::vector<gr_complex> &constellation,
+			   unsigned msgq_limit, 
+			   unsigned occupied_carriers,
+			   unsigned int fft_length);
+      ~ofdm_mapper_bcv_impl(void);
+
+      gr_msg_queue_sptr msgq() const { return d_msgq; }
+
+      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_OFDM_MAPPER_BCV_IMPL_H */