GEO-Mobile Radio LDPC Decoder

Block Diagram

Solution Type: IP Core

End Market: Broadcast, Military, Test & Measurement, Wireless, Wireline

Evaluation Method: OpenCore Plus

Technology: DSP: Error Detection and Correction

Arria Series: Intel® Arria® 10, Arria® V, Intel® Arria® 10 SoC, Arria® V SoC

Cyclone Series: Cyclone® IV, Cyclone® V, Cyclone® V SoC

Stratix Series: Stratix® IV, Stratix® V


GEO-Mobile Radio (GMR) is an ETSI standard for satel- lite phones. The Creonic GMR Decoder IP core supports the PNB2 burst packets that were added in GMR Release 2 (GMPRS-1) and use LDPC codes for the first time. The same burst modes and LDPC codes are also in GMR Re- lease 3 (GMR-3G). The Creonic GMR LDPC decoder IP core is a field-proven solution.


  • -compliant with GMR Release 2, ETSI TS 101 376-5-3 V2.3.1 (2008-07) (GMPRS-1 05.003)
  • -compliant with GMR Release 3, ETSI TS 101 376-5-3 V3.1.1 (2009-07) (GMR-3G 45.003)
  • -support for return and forward link
  • -support for short PNB2 (5,3) bursts and long PNB2 (5,12) bursts
  • -support for all PNB2 modulation schemes (Pi/4-QPSK, 16-APSK, 32-APSK)

Device Utilization and Performance

-support for all PNB2 shortening, repeating, and puncturing schemes -support for all PNB2 LDPC codes (approximate channel coding rates 1/2, 2/3, 4/5, 9/10)

Getting Started

Please contact the Creonic Sales Team!

IP Quality Metrics

Year IP was first released2013
Latest version of Quartus supported15.1
Altera Customer Use
IP has been successfully implemented in production with at least one customerY

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim Altera edition
  • Timing and/or layout constraints
  • Testbench or design example
  • Documentation with revision control
  • Readme file
Any additional customer deliverables provided with IP
Parameterization GUI allowing end user to configure IPN
IP core is enabled for OpenCore Plus SupportY
Source language
Testbench languageVHDL
Software drivers providedN
Driver OS supportn/a
User InterfaceOther: proprietary
IP-XACT Metadata includedN
Simulators supportedModelSim, RivieraPRO
Hardware validated N. Altera Board Name NULL
Industry standard compliance testing performed
If No, is it planned?Y
IP has undergone interoperability testing
Interoperability reports available  N

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