Main Content

Modeling Basics

Resource grids, resource extraction, FDD and TDD duplexing modes, parameter structures

LTE Toolbox™ functions create valid 3GPP parameter sets and model LTE physical layer processing. The parameter configuration functions create and initialize parameter structures that align with specified 3GPP reference measurement channel (RMC), fixed reference channel (FRC), or E-UTRA test model (E-TM) settings. Use the parameter structures as inputs to waveform generation functions to create waveforms compliant with 3GPP LTE and UMTS standards.


lteResourceGridSubframe resource array
lteResourceGridSizeSize of subframe resource array
lteDLResourceGridDownlink subframe resource array
lteDLResourceGridSizeSize of downlink subframe resource array
lteULResourceGridUplink subframe resource array
lteULResourceGridSizeUplink subframe resource array size
lteSLResourceGridSidelink subframe resource array
lteSLResourceGridSizeSidelink subframe resource array size
lteNBResourceGridNarrowband resource array (Since R2021a)
lteDuplexingInfoDuplexing information
lteExtractResourcesExtract resource elements


Reference Guides

Resource Grids

  • Create an Empty Resource Grid
    This example shows how to create an empty resource grid of the right dimensions for the cell-wide settings specified in structure enb.
  • Map Reference Signal to Resource Grid
    This example shows how to map the cell specific reference signals to the resource grid for a subframe in the two antenna case.
  • Resource Grid Indexing
    LTE Toolbox provides facilities to generate sequences of symbols corresponding to the physical channels and signals.


  • FDD and TDD Duplexing
    Describes frequency and time division duplexing (LTE frame structure type 1 and 2) and representation in the LTE Toolbox product.

Parameter Structures

  • Parameterization
    Describes the function parameter style, the way parameters are passed to the toolbox functions. Some of the functions in the LTE Toolbox require a large number of parameters. To simplify this process and to group together relevant parameters, structures are used.
  • LTE Parameterization for Waveform Generation and Simulation
    This example shows how to parameterize end-to-end simulations and generate static waveforms by using LTE Toolbox™ software.
  • UL-SCH Parameterization
    Describes parameterization forms for the UL-SCH and PUSCH related functions.