Collaboration diagram for Complex vectors math and signal processing:

Files
file	cxvec_math.h
	Osmocom Complex vectors math header.

Macros
#define	M_PIf (3.14159265358979323846264338327f)
	PI value float.

Enumerations
enum	osmo_cxvec_conv_type { CONV_FULL_SPAN , CONV_OVERLAP_ONLY , CONV_NO_DELAY }
	Various possible types of convolution span. More...
enum	osmo_cxvec_peak_alg { PEAK_WEIGH_WIN , PEAK_WEIGH_WIN_CENTER , PEAK_EARLY_LATE }
	Various possible peak finding algorithms. More...

Functions
static float	osmo_sinc (float x)
	Unnormalized sinc function.
static float	osmo_normsqf (float complex c)
	Squared norm of a given complex.
struct osmo_cxvec *	osmo_cxvec_scale (const struct osmo_cxvec in, float complex scale, struct osmo_cxvec out)
struct osmo_cxvec *	osmo_cxvec_rotate (const struct osmo_cxvec in, float freq_shift, struct osmo_cxvec out)
struct osmo_cxvec *	osmo_cxvec_delay (const struct osmo_cxvec v, float delay, struct osmo_cxvec out)
struct osmo_cxvec *	osmo_cxvec_convolve (const struct osmo_cxvec f, const struct osmo_cxvec g, enum osmo_cxvec_conv_type type, struct osmo_cxvec *out)
struct osmo_cxvec *	osmo_cxvec_correlate (const struct osmo_cxvec f, const struct osmo_cxvec g, int g_corr_step, struct osmo_cxvec *out)
float complex	osmo_cxvec_interpolate_point (const struct osmo_cxvec *cv, float pos)
int	osmo_cxvec_peaks_scan (const struct osmo_cxvec cv, int peaks_idx, int N)
float	osmo_cxvec_peak_energy_find (const struct osmo_cxvec cv, int win_size, enum osmo_cxvec_peak_alg alg, float complex peak_val_p)
struct osmo_cxvec *	osmo_cxvec_sig_normalize (const struct osmo_cxvec sig, int decim, float freq_shift, struct osmo_cxvec out)

Detailed Description

Macro Definition Documentation

◆ M_PIf

#define M_PIf (3.14159265358979323846264338327f)

PI value float.

Enumeration Type Documentation

◆ osmo_cxvec_conv_type

enum osmo_cxvec_conv_type

Various possible types of convolution span.

Enumerator
CONV_FULL_SPAN	Full span (every possible overlap of f onto g).
CONV_OVERLAP_ONLY	Every possible full overlap of f onto g.
CONV_NO_DELAY	Center f sequence on every g sample.

◆ osmo_cxvec_peak_alg

enum osmo_cxvec_peak_alg

Various possible peak finding algorithms.

Enumerator
PEAK_WEIGH_WIN	Weigthed position for the max pwr window.
PEAK_WEIGH_WIN_CENTER	Weighted position of the peak centered window.
PEAK_EARLY_LATE	Early-Late balancing around peak.

Function Documentation

◆ osmo_cxvec_convolve()

struct osmo_cxvec * osmo_cxvec_convolve	(	const struct osmo_cxvec *	f,
		const struct osmo_cxvec *	g,
		enum osmo_cxvec_conv_type	type,
		struct osmo_cxvec *	out )

◆ osmo_cxvec_correlate()

struct osmo_cxvec * osmo_cxvec_correlate	(	const struct osmo_cxvec *	f,
		const struct osmo_cxvec *	g,
		int	g_corr_step,
		struct osmo_cxvec *	out )

◆ osmo_cxvec_delay()

struct osmo_cxvec * osmo_cxvec_delay	(	const struct osmo_cxvec *	v,
		float	delay,
		struct osmo_cxvec *	out )

◆ osmo_cxvec_interpolate_point()

float complex osmo_cxvec_interpolate_point	(	const struct osmo_cxvec *	cv,
		float	pos )

◆ osmo_cxvec_peak_energy_find()

float osmo_cxvec_peak_energy_find	(	const struct osmo_cxvec *	cv,
		int	win_size,
		enum osmo_cxvec_peak_alg	alg,
		float complex *	peak_val_p )

◆ osmo_cxvec_peaks_scan()

int osmo_cxvec_peaks_scan	(	const struct osmo_cxvec *	cv,
		int *	peaks_idx,
		int	N )

◆ osmo_cxvec_rotate()

struct osmo_cxvec * osmo_cxvec_rotate	(	const struct osmo_cxvec *	in,
		float	freq_shift,
		struct osmo_cxvec *	out )

◆ osmo_cxvec_scale()

struct osmo_cxvec * osmo_cxvec_scale	(	const struct osmo_cxvec *	in,
		float complex	scale,
		struct osmo_cxvec *	out )

◆ osmo_cxvec_sig_normalize()

struct osmo_cxvec * osmo_cxvec_sig_normalize	(	const struct osmo_cxvec *	sig,
		int	decim,
		float	freq_shift,
		struct osmo_cxvec *	out )

◆ osmo_normsqf()

float osmo_normsqf ( float complex c )

inlinestatic

Squared norm of a given complex.

Parameters

[in] c Complex number for which to compute the squared norm

Returns

◆ osmo_sinc()

float osmo_sinc ( float x )