SPUC::qpsk< Numeric > Class Template Reference

A QPSK receiver that can operate at exactly 2 samples/symbol. More...

#include <qpsk.h>

Collaboration diagram for SPUC::qpsk< Numeric >:

Public Types
typedef fundtype< Numeric >::ftype	CNumeric

Public Member Functions
Numeric	I_data ()
Numeric	Q_data ()
complex< CNumeric >	data ()
Numeric	carrier_loop ()
Numeric	symbol_loop ()
bool	symclk (void)
	qpsk (void)
void	reset (void)
void	clock (complex< CNumeric >adc_out)

Public Attributes
a_d	ADC
loop_filter< Numeric >	carrier_loop_filter
loop_filter< Numeric >	symbol_loop_filter
Numeric	carrier_loop_out
Numeric	symbol_loop_out
bool	symbol_clk
bool	symbol_clk_pls
bool	sample_clk
bool	symbol_x2_clk
bool	symbol_x2_clk_pls
vco< Numeric >	c_nco
fir< complex< CNumeric >, long >	rcv_sqrt_rc
delay< complex< CNumeric > >	final_baseband_delay
delay< complex< CNumeric > >	hard_decision_delay
delay< complex< CNumeric > >	timing_disc_delay
long	bpsk
long	dec_rate_log
Numeric	carrier_error
Numeric	symbol_nco_out
complex< CNumeric >	prev_sam
complex< CNumeric >	prev_sym
complex< CNumeric >	decision
complex< CNumeric >	hard_decision_prev
complex< CNumeric >	final_baseband_prev
complex< CNumeric >	baseband
complex< CNumeric >	resampled
complex< CNumeric >	carrier_in
complex< CNumeric >	carrier_nco_out
complex< CNumeric >	mf_in
complex< CNumeric >	mf_out
complex< CNumeric >	final_baseband
complex< CNumeric >	hard_decision
Numeric	timing_error
Numeric	nda_timing_error

Detailed Description

template<class Numeric>
class SPUC::qpsk< Numeric >

A QPSK receiver that can operate at exactly 2 samples/symbol.

to illustrate carrier phase locked loop and demod process see qpsk_variable for more comprehensive example.

Author

Tony Kirke, Copyright(c) 2001

Tony Kirke

Member Typedef Documentation

template<class Numeric>

typedef fundtype<Numeric>::ftype SPUC::qpsk< Numeric >::CNumeric

Constructor & Destructor Documentation

template<class Numeric>

SPUC::qpsk< Numeric >::qpsk ( void  )

inline

References SPUC::loop_filter< Numeric, Coeff >::k0, SPUC::loop_filter< Numeric, Coeff >::k0_en, SPUC::loop_filter< Numeric, Coeff >::k1, SPUC::loop_filter< Numeric, Coeff >::k1_en, SPUC::fir< Numeric, Coeff >::num_taps, SPUC::qpsk< Numeric >::reset(), SPUC::root_raised_cosine_quantized(), and SPUC::fir< Numeric, Coeff >::settaps().

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Member Function Documentation

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::carrier_loop ( )

inline

template<class Numeric>

void SPUC::qpsk< Numeric >::clock ( complex< CNumeric >  adc_out )

inline

References SPUC::qpsk< Numeric >::baseband, SPUC::delay< Numeric >::checkback(), SPUC::vco< Numeric >::clock(), SPUC::dd_symbol(), SPUC::qpsk< Numeric >::hard_decision, SPUC::delay< Numeric >::input(), SPUC::qpsk< Numeric >::mf_out, SPUC::nda_symbol(), SPUC::qpsk_dd_phase(), SPUC::qpsk< Numeric >::resampled, SPUC::round(), SPUC::signbit(), SPUC::qpsk< Numeric >::symbol_clk, SPUC::loop_filter< Numeric, Coeff >::update(), and SPUC::fir< Numeric, Coeff >::update().

Referenced by SPUC::sim_qpsk< Numeric >::rx_step().

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template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::data ( )

inline

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::I_data ( )

inline

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::Q_data ( )

inline

template<class Numeric>

void SPUC::qpsk< Numeric >::reset ( void  )

inline

References SPUC::vco< Numeric >::reset(), SPUC::fir< Numeric, Coeff >::reset(), SPUC::loop_filter< Numeric, Coeff >::reset(), and SPUC::vco< Numeric >::reset_frequency().

Referenced by SPUC::sim_qpsk< Numeric >::loop_init(), and SPUC::qpsk< Numeric >::qpsk().

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template<class Numeric>

Numeric SPUC::qpsk< Numeric >::symbol_loop ( )

inline

template<class Numeric>

bool SPUC::qpsk< Numeric >::symclk ( void  )

inline

Referenced by SPUC::sim_qpsk< Numeric >::rx_step().

Member Data Documentation

template<class Numeric>

a_d SPUC::qpsk< Numeric >::ADC

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::baseband

Referenced by SPUC::qpsk< Numeric >::clock().

template<class Numeric>

long SPUC::qpsk< Numeric >::bpsk

template<class Numeric>

vco<Numeric> SPUC::qpsk< Numeric >::c_nco

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::carrier_error

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::carrier_in

template<class Numeric>

loop_filter<Numeric> SPUC::qpsk< Numeric >::carrier_loop_filter

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::carrier_loop_out

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::carrier_nco_out

template<class Numeric>

long SPUC::qpsk< Numeric >::dec_rate_log

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::decision

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::final_baseband

template<class Numeric>

delay< complex<CNumeric> > SPUC::qpsk< Numeric >::final_baseband_delay

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::final_baseband_prev

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::hard_decision

Referenced by SPUC::qpsk< Numeric >::clock().

template<class Numeric>

delay< complex<CNumeric> > SPUC::qpsk< Numeric >::hard_decision_delay

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::hard_decision_prev

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::mf_in

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::mf_out

Referenced by SPUC::qpsk< Numeric >::clock().

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::nda_timing_error

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::prev_sam

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::prev_sym

template<class Numeric>

fir< complex<CNumeric>, long > SPUC::qpsk< Numeric >::rcv_sqrt_rc

template<class Numeric>

complex<CNumeric> SPUC::qpsk< Numeric >::resampled

Referenced by SPUC::qpsk< Numeric >::clock().

template<class Numeric>

bool SPUC::qpsk< Numeric >::sample_clk

template<class Numeric>

bool SPUC::qpsk< Numeric >::symbol_clk

Referenced by SPUC::qpsk< Numeric >::clock().

template<class Numeric>

bool SPUC::qpsk< Numeric >::symbol_clk_pls

template<class Numeric>

loop_filter<Numeric> SPUC::qpsk< Numeric >::symbol_loop_filter

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::symbol_loop_out

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::symbol_nco_out

template<class Numeric>

bool SPUC::qpsk< Numeric >::symbol_x2_clk

template<class Numeric>

bool SPUC::qpsk< Numeric >::symbol_x2_clk_pls

template<class Numeric>

delay< complex<CNumeric> > SPUC::qpsk< Numeric >::timing_disc_delay

template<class Numeric>

Numeric SPUC::qpsk< Numeric >::timing_error

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The documentation for this class was generated from the following file:

• qpsk.h