restructure receiver

2016-05-31 15:39:15 +02:00
parent dd89949184
commit 1ed08f6e9a
14 changed files with 586 additions and 638 deletions
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2016 Bastian Bloessl <bloessl@ccs-labs.org>
+ *
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INCLUDED_IEEE802_11_FRAME_EQUALIZER_IMPL_H
+#define INCLUDED_IEEE802_11_FRAME_EQUALIZER_IMPL_H
+
+#include <ieee802-11/frame_equalizer.h>
+#include <ieee802-11/constellations.h>
+#include "equalizer/base.h"
+#include "viterbi_decoder.h"
+
+namespace gr {
+namespace ieee802_11 {
+
+class frame_equalizer_impl : virtual public frame_equalizer
+{
+
+public:
+	frame_equalizer_impl(Equalizer algo, double freq, double bw, bool log, bool debug);
+	~frame_equalizer_impl();
+
+	void set_algorithm(Equalizer algo);
+	void set_bandwidth(double bw);
+	void set_frequency(double freq);
+
+	void forecast (int noutput_items, gr_vector_int &ninput_items_required);
+	int general_work(int noutput_items,
+			gr_vector_int &ninput_items,
+			gr_vector_const_void_star &input_items,
+			gr_vector_void_star &output_items);
+
+private:
+
+
+	bool parse_signal(uint8_t *signal);
+	bool decode_signal_field(uint8_t *rx_bits);
+	void deinterleave(uint8_t *rx_bits);
+
+	equalizer::base *d_equalizer;
+	gr::thread::mutex d_mutex;
+	std::vector<gr::tag_t> tags;
+	bool d_debug;
+	bool d_log;
+	int  d_current_symbol;
+	viterbi_decoder d_decoder;
+
+	// freq offset
+	double d_freq;
+	double d_bw;
+	double d_er;
+	double d_epsilon0;
+	gr_complex d_prev_pilots[4];
+
+	int  d_frame_bytes;
+	int  d_frame_symbols;
+	int  d_frame_encoding;
+
+	uint8_t d_deinterleaved[48];
+	gr_complex symbols[48];
+
+	boost::shared_ptr<gr::digital::constellation> d_frame_mod;
+	constellation_bpsk::sptr d_bpsk;
+	constellation_qpsk::sptr d_qpsk;
+	constellation_16qam::sptr d_16qam;
+	constellation_64qam::sptr d_64qam;
+
+	static int interleaver_pattern[48];
+};
+
+} // namespace ieee802_11
+} // namespace gr
+
+#endif /* INCLUDED_IEEE802_11_FRAME_EQUALIZER_IMPL_H */