GEO-Mobile Radio (GMR) is an ETSI standard for satellite 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 Release 3 (GMR-3G).
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).
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).
FPGA-proven design, validated with satellite data.
Soft-decision demapper, LLR-descrambler, block deinterleaver, and LDPC decoder included.
Design-time configuration of throughput for optimal resource utilization.
The software model includes the corresponding transmitter part.