Struct ToneReservation 

pub struct ToneReservation {
    pub reserved: Vec<usize>,
    pub ratio_db: f64,
    pub iterations: usize,
    pub step: f64,
}

Tone reservation (Tellado 2000): a few subcarriers carry no data but a peak-cancelling signal. Every iteration projects the excess of the peaks above the target amplitude (the clipping noise) onto the reserved tones, by least squares, and subtracts it: a gradient descent on the peak excess that never touches the data tones.

Fields

reserved: Vec<usize>

Indices of the reserved tones among the active subcarriers.

ratio_db: f64

Target amplitude, in dB above the average power.

iterations: usize

Iterations.

step: f64

Step of every iteration (1: the full projection).

Implementations

impl ToneReservation

pub fn random( n_active: usize, count: usize, seed: u64, ratio_db: f64, ) -> ToneReservation

count reserved tones drawn at random (seeded) among the n_active subcarriers, the usual choice (a random set gives a peaky cancelling kernel).

Trait Implementations

impl Clone for ToneReservation

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 ToneReservation

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

Formats the value using the given formatter.

impl PaprReduction for ToneReservation

fn data_len(&self, ofdm: &Ofdm) -> usize

Data symbols per block (all the active subcarriers by default).

fn reduce(&self, ofdm: &Ofdm, data: &[C64]) -> Result<(Vec<C64>, usize)>

The time block (without prefix) of one block of data, and its side information.

fn recover( &self, ofdm: &Ofdm, active: Vec<C64>, _side: usize, ) -> Result<Vec<C64>>

The data of a block from the values of its active subcarriers and its side information (despreading only, by default).

fn restore_time(&self, _block: &mut [C64])

Undo a memoryless transformation of the time block at the receiver (the expansion of companding); nothing by default.

impl PartialEq for ToneReservation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ToneReservation