plot

R2026b

Plot pilot locations in 3-D

Since R2026a

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Syntax

plot(pilotcfg)
plot(pilotcfg,limits)

Description

plot(pilotcfg) returns a 3-D plot of all pilot locations given in the pilotcfg input. Each cube represents one pilot symbol. Cubes of the same color in the plot show pilot symbols that form orthogonal vectors along the stream axis.

example

plot(pilotcfg,limits) plots pilot locations in the region specified by limits input argument.

Examples

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Open Live Script

Plot the default OFDM pilots for the ofdmPilotConfig configuration object.

Specify an OFDM pilot configuration using default values.

pilotcfg = ofdmPilotConfig
pilotcfg = 
  ofdmPilotConfig with properties:

               FFTLength: 64
    NumGuardBandCarriers: [2×1 double]
              NumSymbols: 14
      NumTransmitStreams: 1
            StreamGroups: {[1]}
          PilotLocations: {[1×2×28 double]}
            PilotSymbols: {[1×1×28 double]}

Plot the pilot configuration. The tilted 3D-style plot shows all pilot symbols in an OFDM system. Colored cubes represent individual complex pilot symbols, arranged diagonally by transmit stream. The horizontal axis is OFDM Symbols (indices 1–14), the vertical axis is Subcarrier Indices (7–59). Each cube marks a pilot location across subcarriers and OFDM symbols.

plot(pilotcfg)

Figure contains an axes object. The axes object with xlabel Subcarrier Indices, ylabel OFDM Symbols contains an object of type patch.

Input Arguments

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Pilot configuration object, specified as a ofdmPilotConfig object.

Limits of a plotting region, specified as a 2-element vector or a 4-element vector.

  • For the 2-element vector, [scMinIndex, scMaxIndex], plots pilot locations for all symbols in pilotcfg.NumSymbols and subcarriers, scMinIndex:scMaxIndex. The vector elements must satisfy 1<=scMinIndex<=scMaxIndex<=pilotcfg.FFTLength.

  • For the 4-element vector, [scMinIndex, scMaxIndex, symMinIndex, symMaxIndex], plots pilot locations for subcarriers scMinIndex:scMaxIndex and OFDM symbols symMinIndex:symMaxIndex. The vector elements must satisfy 1<=scMinIndex<=scMaxIndex<=pilotcfg.FFTLength and 1<=symMinIndex<=symMaxIndex<=pilotcfg.NumSymbols.

Data Types: double

Version History

Introduced in R2026a

See Also

Objects

Functions