from_file Class Reference

This is a channel model where the receive data is simply taken from a file of received samples. This enables playback of measurements obtained using live runs (see save_raw_input_on_file of four_multi_node) into the simulator (and thus debugging). More...

#include <simulator.hpp>

Inheritance diagram for from_file:

List of all members.

Public Member Functions
	from_file (std::string directory_name="/usr/local/meas_data/")
virtual void	sub_channel (uint32_t from_node_ix, uint32_t to_node_ix, uint32_t from_antenna_ix, uint32_t to_antenna_ix, double freq_tx, double freq_rx, double time, double gain_tx, double gain_rx, std::complex< short int > const *signal_in, std::complex< short int > *signal_out, uint32_t number_of_samples)
virtual void	add_noise (double gain_rx, std::complex< short int > *signal, uint32_t number_of_samples)
Public Attributes
std::string	raw_data_dir
itpp::mat	old_time [max_num_nodes][max_num_nodes]
itpp::imat	frame_ix [max_num_nodes][max_num_nodes]
Static Public Attributes
static const int unsigned	max_num_nodes = 10
static const int unsigned	max_num_ant = 20

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Detailed Description

This is a channel model where the receive data is simply taken from a file of received samples. This enables playback of measurements obtained using live runs (see save_raw_input_on_file of four_multi_node) into the simulator (and thus debugging).

Definition at line 77 of file simulator.hpp.

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Constructor & Destructor Documentation

from_file::from_file

(

std::string

directory_name = "/usr/local/meas_data/"

)

The data is read from the directory directory_name.

The file name is given by frame_node=x_frame=y.dat, where x is the node index and y is the frame number. The directory name can also be used to include a prefix to the filename e.g. directory_name="/home/arnold/sunday_". The files will then be named e.g. /home/arnold/sunday_frame_node=x_frame=y.dat and so on. How to read this data from the files into matlab is described in the document xxx.

Definition at line 440 of file simulator.cpp.

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Member Function Documentation

virtual void from_file::add_noise	(	double	gain_rx,
		std::complex< short int > *	signal,
		uint32_t	number_of_samples
	)		[inline, virtual]

The noise model.

Parameters:

gain_rx	Gain of the receiver chain.
signal	Pointer to noise-free received signal.
number_of_samples	Buffer size

Implements channel_model.

Definition at line 98 of file simulator.hpp.

void from_file::sub_channel	(	uint32_t	from_node_ix,
		uint32_t	to_node_ix,
		uint32_t	from_antenna_ix,
		uint32_t	to_antenna_ix,
		double	freq_tx,
		double	freq_rx,
		double	time,
		double	gain_tx,
		double	gain_rx,
		std::complex< short int > const *	signal_in,
		std::complex< short int > *	signal_out,
		uint32_t	number_of_samples
	)		[virtual]

Transfer function between two antennas in the system.

Parameters:

from_node_ix	Transmitter node index.
to_node_ix	Receiver node index.
from_antenna_ix	Transmitter antenna index.
to_antenna_ix	Receiver antenna index.
freq_tx	Frequency of transmitter (Hz).
freq_rx	Frequency of receiver (Hz).
time	Time in seconds.
gain_tx	Gain setting of transmitter chain.
gain_rx	Gain setting of receiver chain,
signal_in	Pointer to buffer of transmitter samples.
signal_out	Pointer to buffer of receiver samples.
number_of_samples	Buffer size.

Implements channel_model.

Definition at line 459 of file simulator.cpp.

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

• core/simulator.hpp
• core/simulator.cpp