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The Tx schedule used in band hopping is tailored to minimize consecutive transmit periods while maintaining roughly the requested Tx/Rx ratio rather than being truly random. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5546 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
#ifndef WSPR_BAND_HOPPING_HPP__
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#define WSPR_BAND_HOPPING_HPP__
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#include <QObject>
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#include "pimpl_h.hpp"
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class QSettings;
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class Configuration;
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class QWidget;
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//
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// WSPR Band Hopping Control
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//
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// WSPR specifies a globally coordinated band hopping schedule and
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// this class implements that.
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//
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// Responsibilities
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//
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// Provides a maintenance dialog allowing the user to define which
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// bands are allowed from the band hopping schedule as defined here:
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//
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// http://physics.princeton.edu/pulsar/K1JT/doc/wspr/wspr-main.html
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//
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// Along with selecting bands a flag indicating that a short tune up
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// signal is required for specified bands.
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//
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// Provides a Qt property that holds the Tx percentage which is used
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// to generate a semi-randomized schedule of period to transmit. This
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// schedule is random but adjusted to limit the number of consecutive
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// transmission periods, it also adjusts the schedule to ensure that
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// the overall number of transmission periods in any two hour hopping
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// schedule reflects the percentage provided.
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//
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// Collaborations
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//
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// Settings including the selected bands with periods, the tune up
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// flags and the gray line duration are maintained in persistent
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// storage using the provided QSettings object instance.
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//
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// A passed in Configuration object instance is used to query the
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// FrequencyList model to determine working frequencies for each
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// band. The row index of this model is returned by this classes
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// hopping scheduling method so it may be conveniently used to select
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// a new working frequency by a client.
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//
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class WSPRBandHopping
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: public QObject
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{
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Q_OBJECT;
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Q_PROPERTY (int tx_percent READ tx_percent WRITE set_tx_percent);
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public:
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WSPRBandHopping (QSettings *, Configuration const *, QWidget * parent = nullptr);
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~WSPRBandHopping ();
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// display the band hopping maintenance dialog
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Q_SLOT void show_dialog (bool);
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// Property tx_percent implementation
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int tx_percent () const;
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Q_SLOT void set_tx_percent (int);
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// structure that defines the results of the next_hop() method
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struct Hop
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{
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QString period_name_;
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int frequencies_index_; // may be -1 indicating no change
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bool tune_required_;
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bool tx_next_;
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};
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// return the next band parameters
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Hop next_hop ();
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// determine if the next period should be a transmit period
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bool next_is_tx ();
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private:
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class impl;
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pimpl<impl> m_;
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};
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#endif
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