mimo::EqualizerMMSE Class Reference

MMSE Equalizer, i.e. Matrix inversion and multiplication block, i.e. the solution of a linear equation system. More...

#include <equalizer.h>

Inheritance diagram for mimo::EqualizerMMSE:

[legend]List of all members.

Public Member Functions
	EqualizerMMSE (int deviceID, DeviceSystemIntf *system, const simth::PropertyList &pl, size_t dim_in, size_t dim_out)
void	setSNR (double snr)
void	setNoisePower (double n)
void	process ()
Static Public Member Functions
void	calcMMSE (const CVectorSeq &received_signal, const MatrixFreqSignal &channelestim, CVectorSeq &equalized_signal, double noise_power, CVectorSeq *softout_information)

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Detailed Description

MMSE Equalizer, i.e. Matrix inversion and multiplication block, i.e. the solution of a linear equation system.

Only works for matrices at input_port 1 and vectors at input_port 0. The matrix A is of dimension MxN, the input vector b of dimension N, and the output vector x of dimension M. If M=N, the solution is, well, the solution of Ax=b. If M>N, the solution will be the linear least square that minimizes ||Ax-b||^2 using QR factorization.

Parameters in Micos parameter file:

eq_type: set this to "<code>zf</code>"

dim_in: Set this to the length M of the input vector.

dim_out: Set this to the length M of the output vector.

snr: Set this to the loop variable that specifies the SNR.

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Constructor & Destructor Documentation

mimo::EqualizerMMSE::EqualizerMMSE (  int  deviceID, DeviceSystemIntf *  system, const simth::PropertyList &  pl, size_t  dim_in, size_t  dim_out )

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Member Function Documentation

void mimo::EqualizerMMSE::setSNR (  double  snr  )

Sets the signal-to-noise ratio to 'snr', while the signal power is kept constant.

void mimo::EqualizerMMSE::setNoisePower (  double  n  )

void mimo::EqualizerMMSE::process (   )  [virtual]

Implements simth::Device.

void mimo::EqualizerMMSE::calcMMSE (  const CVectorSeq &  received_signal, const MatrixFreqSignal &  channelestim, CVectorSeq &  equalized_signal, double  noise_power, CVectorSeq *  softout_information )  [static]

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