Documentation
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Overview ¶
Package phase holds the small phase-domain helpers the rotation analyses use — the native Go equivalents of numpy.unwrap and the per-symbol differential phase that makes a π/4-DQPSK constellation's rotation visible. They are stdlib-only and operate on plain float64 / complex128 slices.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Diff ¶
func Diff(z []complex128) []float64
Diff returns the per-sample differential phase angle(z[i]·conj(z[i-1])) in (-π, π] — the rotation between consecutive samples, i.e. the π/4-DQPSK rotation signal. The output has length len(z)-1; it is nil when z has fewer than two samples.
func FromComplex ¶
func FromComplex(z []complex128) []float64
FromComplex returns the wrapped instantaneous phase (atan2(Im, Re), in (-π, π]) of each sample in z. Returns a new slice.
func Unwrap ¶
Unwrap removes 2π discontinuities from a sequence of phase angles in radians, matching numpy.unwrap with the default discontinuity of π: wherever the step between consecutive samples exceeds π in magnitude, a multiple of 2π is added to bring it back into (-π, π]. The first sample is left untouched. Returns a new slice; the input is not modified.
Types ¶
This section is empty.
Source Files