This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Downlink Channels

Downlink physical signals, physical channels, transport channels, control information, and OFDM modulation

Use LTE Toolbox™ mid-level downlink channel processing functions to:

  • Create physical signals and physical channels for transmission and reception.

  • Create, encode, and decode transport channels.

  • Create, manipulate, encode, and decode control information messages.

  • Perform OFDM modulation and demodulation.

For function mapping within the downlink grid, see Downlink Physical Channels Grid and Downlink Physical Signals Grid.

  • Physical Signals
    Synchronization signals (PSS and SSS), downlink reference signals (CRS, DM-RS, CSI-RS, and PRS)
  • Physical Channels
    PBCH, PDSCH, PDCCH, PCFICH, PHICH and EPDCCH coding, modulation, indices, scrambling sequence
  • Transport Channels
    BCH coding, DL-SCH coding and information
  • Control Information
    DCI creation, manipulation, coding, and information; CFI coding; UL-PMI information and selection
  • OFDM Modulation
    Orthogonal frequency division multiplexing modulator, demodulator, dimension information

Featured Examples

LTE Parameterization for Waveform Generation and Simulation

LTE Parameterization for Waveform Generation and Simulation

The steps involved and the different ways to parameterize end-to-end simulations and static waveform generation using LTE Toolbox™. In this example we focus on the downlink, but the concepts discussed apply to the uplink as well.

Open Script
LTE DL-SCH and PDSCH Processing Chain

LTE DL-SCH and PDSCH Processing Chain

In LTE the Downlink Shared Channel (DL-SCH) is a transport channel used for the transmission of user data, dedicated control and user-specific higher layer information and downlink system information. The Physical Downlink Shared Channel (PDSCH) is the physical channel that carries the DL-SCH coded data. This example shows the different stages involved in the Downlink Shared Channel (DL-SCH) and Physical Downlink Shared Channel (PDSCH) processing and provides access to the data from these intermediate stages.

Open Script
Create Synchronization Signals

Create Synchronization Signals

Construct synchronization signals using the LTE Toolbox™. In this example, you create the primary and secondary synchronization signals and map them to a resource grid.

Open Live Script
NB-IoT Downlink Waveform Generation

NB-IoT Downlink Waveform Generation

Generate LTE-Advanced Pro Release 13 Narrowband IoT (NB-IoT) waveforms for test and measurement applications using the LTE Toolbox™.

Open Script
LTE-M Downlink Waveform Generation

LTE-M Downlink Waveform Generation

Create a downlink LTE-M transmission consisting of MTC Physical Downlink Control Channel (MPDCCH) as well as its associated Physical Downlink Shared Channel (PDSCH) and Physical Broadcast Channel (PBCH), including repetitions and frequency hopping. When compared to pre-Release 13 devices, Cat-M devices offer lower cost and complexity, enhanced coverage by the introduction of repetitions and an extended DRX for further power saving.

Open Script
LTE Toolbox Documentation
Support
5G Development with MATLAB

5G Development with MATLAB

Download ebook