CECCO::NRZMapper Class Reference

Non-Return-to-Zero (NRZ) mapper for binary modulation. More...

#include <blocks.hpp>

Inheritance diagram for CECCO::NRZMapper:

Public Member Functions
constexpr	NRZMapper (double a, double b) noexcept
	Construct with constellation parameters.
constexpr std::complex< double >	operator() (const Fp< 2 > &in) noexcept
	Map a bit to its constellation point.
Constellation Parameters
constexpr double	get_Eb () const noexcept
	Energy per bit Eb = a² + b²/4.
constexpr double	get_a () const noexcept
	DC offset parameter a.
constexpr double	get_b () const noexcept
	Constellation distance parameter b.
Public Member Functions inherited from CECCO::details::BlockProcessor< T, Fp< 2 >, std::complex< double > >
Vector< std::complex< double > >	operator() (const Vector< Fp< 2 > > &in)
	Apply the block element-wise to each vector entry.
Vector< std::complex< double > >	operator() (Vector< Fp< 2 > > &&in)
	Apply the block element-wise (rvalue input).
Matrix< std::complex< double > >	operator() (const Matrix< Fp< 2 > > &in)
	Apply the block element-wise to each matrix entry.
Matrix< std::complex< double > >	operator() (Matrix< Fp< 2 > > &&in)
	Apply the block element-wise (rvalue input).
std::complex< double >	operator() (const U &)
	Catch-all for inputs whose element type differs from InputType.
Vector< std::complex< double > >	operator() (const Vector< U > &)
Matrix< std::complex< double > >	operator() (const Matrix< U > &)

Additional Inherited Members
Protected Member Functions inherited from CECCO::details::BlockProcessor< T, Fp< 2 >, std::complex< double > >
const T &	derived () const noexcept
T &	derived () noexcept

Detailed Description

Non-Return-to-Zero (NRZ) mapper for binary modulation.

Maps 𝔽_2 symbols to real constellation points (a − b/2, 0) and (a + b/2, 0), where a is the DC offset and b is the constellation distance. Energy per bit is Eb = a² + b²/4 (unit symbol duration assumed).

Typical configurations: BPSK (a = 0, b = 2, constellation {−1, +1}, Eb = 1) and OOK (a = 1, b = 2, constellation {0, +2}, Eb = 2).

NRZMapper ook(1.0, 2.0);
Vector<Fp<2>> bits = {0, 1, 0, 1};
Vector<std::complex<double>> signal = bits >> ook;   // (0, 2, 0, 2)

See also

CECCO::BPSKMapper, CECCO::AWGN, CECCO::NRZDemapper

Definition at line 462 of file blocks.hpp.

Constructor & Destructor Documentation

NRZMapper()

CECCO::NRZMapper::NRZMapper ( double a, double b )

inlineconstexprnoexcept

Construct with constellation parameters.

Parameters

a	DC offset (real-axis shift)
b	Constellation distance (separation between symbols)

Definition at line 472 of file blocks.hpp.

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Member Function Documentation

get_a()

double CECCO::NRZMapper::get_a ( ) const

inlineconstexprnoexcept

DC offset parameter a.

Definition at line 482 of file blocks.hpp.

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get_b()

double CECCO::NRZMapper::get_b ( ) const

inlineconstexprnoexcept

Constellation distance parameter b.

Definition at line 485 of file blocks.hpp.

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get_Eb()

double CECCO::NRZMapper::get_Eb ( ) const

inlineconstexprnoexcept

Energy per bit Eb = a² + b²/4.

Definition at line 479 of file blocks.hpp.

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operator()()

std::complex< double > CECCO::NRZMapper::operator() ( const Fp< 2 > & in )

inlineconstexprnoexcept

Map a bit to its constellation point.

Parameters

in	Binary input

Returns

(a − b/2, 0) for input 0; (a + b/2, 0) for input 1

Definition at line 494 of file blocks.hpp.

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The documentation for this class was generated from the following file:

• blocks.hpp