info

Provide dimensioning information for OFDM modulator

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Syntax

S = info(obj)

Description

S = info(obj) returns a structure with fields that identify the input and output signal dimensions for the comm.OFDMModulator System object™, obj.

example

Examples

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Open Live Script

Get the OFDM modulator data dimensions by using the info object function.

Create an OFDM modulator object with pilot indices, a DC null, and two transmit antennas. 

ofdmMod = comm.OFDMModulator( ...
    NumGuardBandCarriers=[4; 3], ...
    PilotInputPort=true, ...
    PilotCarrierIndices=cat(3,[12; 26; 40; 54],[11; 25; 39; 53]), ...
    InsertDCNull=true, ...
    NumTransmitAntennas=2);

Use the info object function to get the modulator input data, pilot input data, and output data sizes.

info(ofdmMod)
ans = struct with fields:
     DataInputSize: [48 1 2]
    PilotInputSize: [4 1 2]
        OutputSize: [80 2]

Input Arguments

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System object to return dimensional information for, specified as a comm.OFDMModulator System object.

Output Arguments

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Dimensions for OFDM modulator signals, returned as a structure with fields that identify the input and output signal dimensions for the comm.OFDMModulator System object, obj.

Dimensions of input data signal, returned as a column vector. The element values are computed as [NDataSC,NSym,NStreams], based on the configuration of the input obj.

For variable definitions, see List of Variables.

Data Types: double

Dimensions of the pilot input signal, returned as a column vector. The element values are computed as [NPilot,NSym,NStreams], based on the configuration of the input obj.

For variable definitions, see List of Variables.

Data Types: double

Modulator output signal matrix dimensions, returned as a column vector. The element values are computed as [NOut,NStreams], based on the configuration of the input obj.

For variable definitions, see List of Variables.

Data Types: double

Data Types: struct

More About

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Version History

Introduced in R2014a

See Also

Objects

Functions