SPUC::max_pn Class Reference

Maximal Length Pseudorandom sequence generator. More...

#include <max_pn.h>

Public Member Functions
	max_pn (int g=0x006d, int len=63, int init=-1)
void	reset ()
	Reset. More...
signed char	out ()
	Get output (fast method) More...
bool	get_bit ()
	Fast method. More...
signed char	out1 ()
	Get output (alternative method) More...
int	state ()

Protected Attributes
int	lenp1
int	gen
int	u

Detailed Description

Maximal Length Pseudorandom sequence generator.

Simple implementation of a maximal length pseudorandom sequence used for spread spectrum PN generation, BER testing etc. G is the generator Len is the PN length (must be 2^N - 1) Init is an initialization seed Two methods supported out : exclusive or (XOR) shift register with Generator out1 : feedback with XOR reduction Note: G, LEN must be correct (need to get from book).

Author

Tony Kirke

Constructor & Destructor Documentation

SPUC::max_pn::max_pn ( int  g = 0x006d, int  len = 63, int  init = -1  )

inline

Constructor Constructor

Member Function Documentation

bool SPUC::max_pn::get_bit

(

)

Fast method.

References gen, lenp1, and u.

Referenced by SPUC::dvb_conv_encoder::get_data(), and SPUC::data_conv_encoder::get_data().

signed char SPUC::max_pn::out

(

)

Get output (fast method)

References gen, lenp1, and u.

Referenced by SPUC::qam_tx< float_type >::clock(), SPUC::quad_data< float_type >::get_fir_output(), SPUC::qpsk_ber_test::init_delay(), main(), SPUC::baud_eq_env< Numeric >::step(), SPUC::qpsk_ber_test::synchronise(), SPUC::bpsk_ber_test::synchronize(), and SPUC::qpsk_ber_test::synchronize().

signed char SPUC::max_pn::out1

(

)

Get output (alternative method)

returns {0,1} instead of {-1,1}

References gen, lenp1, and u.

void SPUC::max_pn::reset ( void  )

inline

Reset.

Referenced by SPUC::qam_tx< float_type >::loop_init(), SPUC::bpsk_ber_test::reset(), SPUC::dvb_conv_encoder::reset(), SPUC::qpsk_ber_test::reset(), and SPUC::data_conv_encoder::reset().

int SPUC::max_pn::state ( )

inline

Member Data Documentation

int SPUC::max_pn::gen

protected

Referenced by get_bit(), out(), and out1().

int SPUC::max_pn::lenp1

protected

Referenced by get_bit(), out(), and out1().

int SPUC::max_pn::u

protected

Referenced by get_bit(), out(), and out1().

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

• max_pn.h
• max_pn.cpp