CECCO::BI_AWGN Class Reference

Binary-Input AWGN — fused NRZMapper + AWGN block. More...

#include <blocks.hpp>

Inheritance diagram for CECCO::BI_AWGN:

Public Member Functions
	BI_AWGN (double EbN0dB, double a=0.0, double b=2.0)
	Construct with SNR and constellation parameters.
std::complex< double >	operator() (const Fp< 2 > &in)
	Map a bit and add noise.
const NRZMapper &	get_encoder () const noexcept
	Internal NRZ mapper (for constructing matching demappers/LLR calculators).
const AWGN &	get_transmission () const noexcept
	Internal AWGN block (for noise statistics).
double	get_capacity () const noexcept
	Shannon capacity in bits per symbol.
constexpr double	get_pe () const noexcept
	Theoretical hard-decision bit error probability for this constellation/SNR.
double	get_sigma () const noexcept
	Noise standard deviation σ.
long double	get_Bhattacharyya_param () const noexcept
	Bhattacharyya parameter γ = exp(−b²/(8σ²)).
Public Member Functions inherited from CECCO::details::BlockProcessor< BI_AWGN, Fp< 2 >, std::complex< double > >
Vector< std::complex< double > >	operator() (const Vector< Fp< 2 > > &in)
	Apply the block element-wise to each vector entry.

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

Detailed Description

Binary-Input AWGN — fused NRZMapper + AWGN block.

Maps binary inputs through an internal NRZMapper and then through AWGN, yielding noisy complex symbols ready for hard decision (NRZDemapper) or soft decision (LLRCalculator). Default parameters give BPSK (a = 0, b = 2).

BI_AWGN channel(6.0);                                       // BPSK at 6 dB
Vector<Fp<2>> c = {1, 0, 1, 0};
Vector<Fp<2>> r = c >> channel >> NRZDemapper(channel);     // hard decisions

See also

CECCO::AWGN, CECCO::NRZDemapper, CECCO::LLRCalculator

Definition at line 634 of file blocks.hpp.

Constructor & Destructor Documentation

BI_AWGN()

CECCO::BI_AWGN::BI_AWGN ( double EbN0dB, double a = 0.0, double b = 2.0 )

inline

Construct with SNR and constellation parameters.

Parameters

EbN0dB	SNR Eb/N₀ in dB
a	NRZ DC offset (default 0 for BPSK)
b	NRZ constellation distance (default 2 for BPSK)

Definition at line 644 of file blocks.hpp.

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Member Function Documentation

get_Bhattacharyya_param()

long double CECCO::BI_AWGN::get_Bhattacharyya_param ( ) const

inlinenoexcept

Bhattacharyya parameter γ = exp(−b²/(8σ²)).

Definition at line 676 of file blocks.hpp.

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get_capacity()

double CECCO::BI_AWGN::get_capacity ( ) const

noexcept

Shannon capacity in bits per symbol.

Returns

C ∈ [0, 1], computed by composite Simpson's rule (no closed form for BI-AWGN).

Returns 0 if the constellation distance is 0 and 1 if the noise vanishes.

Definition at line 687 of file blocks.hpp.

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get_encoder()

const NRZMapper & CECCO::BI_AWGN::get_encoder ( ) const

inlinenoexcept

Internal NRZ mapper (for constructing matching demappers/LLR calculators).

Definition at line 654 of file blocks.hpp.

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get_pe()

double CECCO::BI_AWGN::get_pe ( ) const

inlineconstexprnoexcept

Theoretical hard-decision bit error probability for this constellation/SNR.

Definition at line 668 of file blocks.hpp.

get_sigma()

double CECCO::BI_AWGN::get_sigma ( ) const

inlinenoexcept

Noise standard deviation σ.

Definition at line 671 of file blocks.hpp.

get_transmission()

const AWGN & CECCO::BI_AWGN::get_transmission ( ) const

inlinenoexcept

Internal AWGN block (for noise statistics).

Definition at line 657 of file blocks.hpp.

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operator()()

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

inline

Map a bit and add noise.

Parameters

in

Input bit

Returns

NRZ symbol corrupted by AWGN

Definition at line 651 of file blocks.hpp.

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

• blocks.hpp