3 * Copyright 2002 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
22 #ifndef _FPLL_BTLOOP_COUPLING_H_
23 #define _FPLL_BTLOOP_COUPLING_H_
26 * Magic coupling constant between GrAtscFPLL and GrAtscBitTimingLoop.
27 * Trust me, you don't want to mess with this.
29 * The agc block buried in the FPLL indirectly sets the level of the input
30 * to the bit timing loop. The bit timing loop's convergence properties
31 * depend on the the mean amplitude of it's input. This constant ties
32 * them together such that you can tweak the input level of the bit timing loop
33 * (somewhat) without screwing everything.
36 static const float FPLL_BTLOOP_COUPLING_CONST = 3.125;
38 #endif /* _FPLL_BTLOOP_COUPLING_H_ */