5G • RAN
LDPC Base Graph 1
Low-Density Parity-Check Base Graph 1
High-rate LDPC matrix optimized for large transport blocks (TBS > 3824 bits) and multi-gigabit throughput.
Technical Explanation
3GPP replaced LTE Turbo codes with LDPC codes for 5G data channels. Base Graph 1 is designed for high coding rates (R > 0.67) and large block sizes up to 8448 bits. It utilizes quasi-cyclic parity-check matrices enabling highly parallelized hardware decoding engines achieving multi-Gbps decoding throughput.
Key Functions
- Decodes large transport blocks exceeding 3824 bits up to 8448 bits
- Optimized for high code rates (0.33 <= R <= 0.95)
- Supports ultra-high throughput parallel decoding with low latency
Specifications
3GPP TS 38.212
Interfaces
Uu
Related 5G Concepts
Want to memorize 5G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.