mimo::EqualizerZF Class Reference

ZF 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::EqualizerZF:

[legend]List of all members.

Public Member Functions
	EqualizerZF (int deviceID, DeviceSystemIntf *system, const simth::PropertyList &pl, size_t dim_in, size_t dim_out)
void	process ()
Static Public Member Functions
void	calcZF (const CVectorSeq &received_signal, const MatrixFreqSignal &channelestim, CVectorSeq &equalized_signal, CVectorSeq *softout_information)

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Detailed Description

ZF 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.

The second output interface (# 1) calculates the necessary reliability information for soft-output demodulation.

Parameters in Micos parameter file:

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

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

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

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Constructor & Destructor Documentation

mimo::EqualizerZF::EqualizerZF (  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::EqualizerZF::process (   )  [virtual]

Implements simth::Device.

void mimo::EqualizerZF::calcZF (  const CVectorSeq &  received_signal, const MatrixFreqSignal &  channelestim, CVectorSeq &  equalized_signal, CVectorSeq *  softout_information )  [static]

Calculate a ZF equalization on the given received_signal. The output sequence for the softout_information may be NULL.

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