info

Characteristic information about multipath fading channels

Syntax

s = info(chan)

Description

s = info(chan) returns a structure containing characteristic information about the specified multipath fading channel System object™.

Examples

Return Characteristic Information of WLAN TGax Channel

Create a WLAN TGax multipath fading channel System object with default property values.

chan = wlanTGaxChannel;

Return and display the characteristic information of the TGax channel.

s = info(chan)

s = struct with fields:
           ChannelFilterDelay: 7
    ChannelFilterCoefficients: [17×22 double]
                   PathDelays: [0 5.0000e-09 1.0000e-08 1.5000e-08 2.0000e-08 2.5000e-08 3.0000e-08 3.5000e-08 4.0000e-08 4.5000e-08 5.0000e-08 5.5000e-08 6.0000e-08 6.5000e-08 7.0000e-08 7.5000e-08 8.0000e-08]
             AveragePathGains: [0 -2.7143 -5.4287 -8.1431 -2.5162 -4.2194 -5.8905 -7.5358 -9.1603 -10.9595 -12.5105 -14.0616 -15.6126 -17.1637 -18.7147 -20.2657 -21.8168]
                     Pathloss: 0

Return Characteristic Information of WLAN TGay Channel

Create a WLAN TGay multipath fading channel System object with default property values.

chan = wlanTGayChannel;

Return and display the characteristic information of the TGay channel.

s = info(chan)

s = struct with fields:
     ChannelFilterDelay: 7
    NumSamplesProcessed: 0
           NumTxStreams: 1
           NumRxStreams: 1
          NumTxElements: 4
          NumRxElements: 4

Input Arguments

chan — Multipath fading channel

wlanTGnChannel object | wlanTGacChannel object | wlanTGahChannel object | wlanTGaxChannel object | wlanTGayChannel object

Multipath fading channel, specified as a wlanTGnChannel, wlanTGacChannel, wlanTGahChannel, wlanTGaxChannel, or wlanTGayChannel object.

Output Arguments

s — Characteristic information

structure

Characteristic information, returned as a structure whose fields depend on the multipath fading channel you specify in the chan input.

This field applies to all channel objects.

Field	Values	Description	Data Types
ChannelFilterDelay	Positive integer	Channel filter delay in samples	double
PathDelays	Nonnegative-valued row vector	Multipath delay, in seconds, of the discrete paths

These fields do not apply to the wlanTGayChannel object.

Field	Values	Description	Data Types
ChannelFilterCoefficients	Real-valued matrix	Channel fractional delay filter coefficients	double
AveragePathGains	Nonpositive-valued row vector	Average gains, in dB, of the discrete paths
PathLoss	Nonnegative scalar	Path loss, in dB, between the transmitter and receiver

These fields apply only to the wlanTGayChannel object.

Field	Values	Description	Data Types
NumSamplesProcessed	Nonnegative integer	Number of samples the channel processed since its last reset	double
NumTxStreams	Positive integer	Number of transmitted data streams
NumRxStreams		Number of received data streams
NumTxElements		Number of elements in each transmit antenna array
NumRxElements		Number of elements in each receive antenna array
AnglesOfDeparture	Real-valued matrix	Azimuth and elevation angles of departure in degrees. Each element of this matrix contains the angles of departure for the corresponding for each pair of transmit and receive antennas. To enable this field, lock the TGay channel.
AnglesOfArrival		Azimuth and elevation angles of arrival in degrees. Each element of this matrix contains the angles of arrival for the corresponding pair of transmit and receive antenna elements. To enable this field, lock the TGay channel.
DopplerShifts	Real-valued row vector	Doppler shifts in Hz. Each element of this vector contains the Doppler shift for the corresponding pair of transmit and receive antenna elements. To enable this field, lock the TGay channel.

Data Types: struct

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2015b