5G • RAN
LDPC Base Graph 2
Low-Density Parity-Check Base Graph 2
Low-rate LDPC matrix optimized for small transport blocks (TBS <= 3824 bits) and robust cell-edge data transfer.
Technical Explanation
Base Graph 2 is tailored for smaller block lengths (up to 3840 bits) and lower code rates (R as low as 0.15). It provides maximum error-correcting gain in difficult radio environments, serving small packets, VoIP speech frames, and cell-edge retransmissions.
Key Functions
- Optimized for smaller block sizes (up to 3840 bits)
- Supports low code rates down to 1/5 for deep fading tolerance
- Ideal for speech, sensor telemetry, and cell-edge data transmissions
Specifications
3GPP TS 38.212
Interfaces
Uu
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