Signal Transmission

Waveform generation and low-level physical layer subcomponents

Satellite Communications Toolbox provides functions and examples to create various standards-based waveforms for the design, modeling, and verification of satellite communications and navigation systems. The toolbox offers these standards-based waveforms.

Consultative Committee for Space Data Systems (CCSDS) Telecommand (TC)
CCSDS Telemetry (TM)
Digital Video Broadcasting Satellite Second Generation (DVB-S2)
Digital Video Broadcasting Satellite Second Generation extended (DVB-S2X)
Global Positioning System (GPS)

Use these functions as golden reference for verification when implementing satellite communication and navigation features. You can modify and customize the toolbox functions and use them as custom reference models in your implementation.

Apps

Satellite Waveform Generator

Create, impair, visualize, and export satellite communications waveforms (Since R2023b)

Functions

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Waveform Generation

`ccsdsHPEWaveformGenerator`	Generate CCSDS optical HPE waveform (Since R2023b)
`ccsdsTCConfig`	CCSDS TC configuration parameters (Since R2021a)
`ccsdsTCWaveform`	Generate CCSDS TC waveform (Since R2021a)
`ccsdsTMWaveformGenerator`	Generate CCSDS TM waveform (Since R2021a)
`dvbs2WaveformGenerator`	Generate DVB-S2 waveform (Since R2021a)
`dvbs2xWaveformGenerator`	Generate DVB-S2X waveform (Since R2021a)
`dvbrcs2WaveformGenerator`	Generate DVB-RCS2 waveform (Since R2021b)
`gpsWaveformGenerator`	Generate GPS waveform (legacy L1 and L2, modernized L1C, L2C, and L5) (Since R2025a)

Physical Layer Subcomponents

`ccsdsRSEncode`	Encode CCSDS-compliant RS codes (Since R2021a)
`ccsdsRSDecode`	Decode CCSDS-complaint RS codes (Since R2021a)
`dvbsLDPCPCM`	Generate parity-check matrix for DVB-S2/S2X LDPC codes (Since R2024b)
`dvbrcs2TurboEncode`	Encode DVB-RCS2-compliant turbo codes (Since R2021b)
`dvbrcs2TurboDecode`	Decode DVB-RCS2-compliant turbo codes (Since R2021b)
`dvbsapskmod`	DVB-S2/S2X/SH standard-specific APSK modulation
`dvbsapskdemod`	DVB-S2/S2X/SH standard-specific APSK demodulation

Satellite Navigation Systems

`bocmod`	Binary offset carrier modulation (Since R2022a)
`casmmod`	CASM modulation (Since R2024b)
`gnssCACode`	Generate C/A-code for GPS, NavIC, and QZSS satellites (Since R2021b)
`gpsL1CCodes`	Generate ranging and overlay codes for GPS L1C (Since R2024a)
`gpsL2CCodes`	Generate CM and CL codes for GPS L2C (Since R2025a)
`gpsL5Codes`	Generate ranging codes for GPS L5 (Since R2024b)
`gpsPCode`	Generate P-code for GPS satellites (Since R2021b)
`gpsWaveformGenerator`	Generate GPS waveform (legacy L1 and L2, modernized L1C, L2C, and L5) (Since R2025a)
`interplexmod`	Interplex modulation (Since R2024a)

Deep Space Optical Communications

`ccsdsHPEWaveformGenerator`	Generate CCSDS optical HPE waveform (Since R2023b)
`ccsdsSCPPMEncode`	Encode CCSDS-compliant SCPPM codes (Since R2022b)
`ccsdsSCPPMDecode`	Decode CCSDS-compliant SCPPM codes (Since R2022b)

Blocks

DVBS-APSK Demodulator Baseband	DVB-S2/S2X/SH standard-specific APSK demodulation
DVBS-APSK Modulator Baseband	DVB-S2/S2X/SH standard-specific APSK modulation
Waveform From Wireless Waveform Generator App	Wireless waveform source exported to Simulink (Since R2023b)

Topics

GPS and How It Works
Learn about GPS, its segments, and how GPS and other GNSS signals work using the ranging and trilateration technique.
GPS Signals
Describes the signal specifications of legacy (C/A and P-code) and modernized (L1C, L2C, and L5) GPS signals.
Optical Wireless Communications
Understand optical wireless communications and core components of free space optical communication (FSOC) and deep space optical communication (DSOC).
Generate Waveforms
Generate waveforms for these satellite communication standards — DVB-S2, DVB-S2X, DVB-RCS2, CCSDS HPE TM, CCSDS TM, and CCSDS TC.