presync_cccf

Pre-demodulation signal synchronizer

Public Functions

presync_cccf	presync_cccf_create(float complex * _v, unsigned int _n, float _dphi_max, unsigned int _m)
int	presync_cccf_destroy(presync_cccf _q)
int	presync_cccf_print(presync_cccf _q)
int	presync_cccf_reset(presync_cccf _q)
int	presync_cccf_push(presync_cccf _q, float complex _x)
int	presync_cccf_execute(presync_cccf _q, float complex * _rxy, float * _dphi_hat)

Interfaces

presync_cccf presync_cccf_create(float complex * _v, unsigned int _n, float _dphi_max, unsigned int _m)∞

Create pre-demod synchronizer from external sequence

• _v : baseband sequence, shape: (_n, 1)
• _n : baseband sequence length, 0 < _n
• _dphi_max : maximum absolute frequency deviation for detection
• _m : number of correlators, 0 < _m

int presync_cccf_destroy(presync_cccf _q)∞

Destroy pre-demod synchronizer, freeing all internal memory

int presync_cccf_print(presync_cccf _q)∞

Print pre-demod synchronizer internal state

int presync_cccf_reset(presync_cccf _q)∞

Reset pre-demod synchronizer internal state

int presync_cccf_push(presync_cccf _q, float complex _x)∞

Push input sample into pre-demod synchronizer

• _q : pre-demod synchronizer object
• _x : input sample

int presync_cccf_execute(presync_cccf _q, float complex * _rxy, float * _dphi_hat)∞

Correlate original sequence with internal input buffer

• _q : pre-demod synchronizer object
• _rxy : output cross correlation
• _dphi_hat : output frequency offset estimate