Struct ExitCurve 

pub struct ExitCurve {
    pub apriori: Vec<f64>,
    pub extrinsic: Vec<f64>,
}

The transfer curve of a constituent decoder on a grid of a priori informations.

Fields

apriori: Vec<f64>

The a priori informations $I_{A}$, increasing.

extrinsic: Vec<f64>

The extrinsic informations $I_{E} = T(I_{A})$.

Implementations

impl ExitCurve

pub fn measure( trellis: &Trellis, parity_period: usize, ebn0_db: f64, rate: f64, n_bits: usize, apriori: &[f64], seed: u64, ) -> Result<ExitCurve>

Measure the transfer curve of the recursive systematic code trellis (rate $1/2$: systematic and parity bits) whose parity is kept once every parity_period bits (2: a rate-2/3 constituent), at the $E_{b}/N_{0}$ ebn0_db of the concatenated code of rate rate, on a block of n_bits information bits (unterminated, log-MAP BCJR), at the a priori informations apriori. The bits, the channel and the a priori noise are drawn from seed: two curves of the same seed share them.

Errors

Error::Config for a trellis that is not of rate 1/2, a period of 0, no bit, or a rate outside $(0, 1]$; as bcjr.

pub fn transfer(&self, i: f64) -> f64

$T(I)$ by linear interpolation on the grid (clamped at its ends).

pub fn tunnel_open(&self, second: &ExitCurve, target: f64) -> bool

Whether the tunnel between this curve (first decoder) and second is open: the alternating passes $I \to T_{2}(T_{1}(I))$ from $I = 0$ reach target.

Trait Implementations

impl Clone for ExitCurve

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExitCurve

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ExitCurve

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ExitCurve