Error Correction/Detection Using LDPC Codes TRIZ Cases

Non-uniform 16-symbol mapping for 3/15 LDPC codewords improves BICM transmission efficiency while reducing bit and frame error rates.

Structured LDPC group-to-symbol bit mapping improves decoding and reception robustness in digital broadcasting without excessive transmitter complexity.

By regenerating parity bits and forming syndromes with the encoding circuit, this case cuts parity-check decoding complexity in rewritable memory.

Parity bits are grouped and written into preset columns to spread burst errors and improve LDPC decoding reliability in DVB-T2.

Channel-quality-based precision switching in LDPC decoding cuts power use while preserving decoding accuracy across varying SNR conditions.

New LDPC, BCH, interleaving, and 256-APSK schemes extend satellite links below -3 dB and above 15.5 dB with finer SNR granularity.

By removing rows and columns tied to punctured parity bits, this LDPC decoding approach improves low-SNR bit estimation without reinsertion.

Section-based bit permutation maps each constellation word across cyclic blocks, improving QC-LDPC interleaving parallelism while cutting latency.

By grouping QC-LDPC cyclic blocks into foldable sections, this interleaving scheme improves parallel decoding and cuts latency.

Trellis maximization speeds non-binary LDPC decoding in MLC NAND storage while lowering memory use and hardware complexity.

Bit permutation between LDPC coding and QAM mapping improves bit-to-constellation association and quasi error-free reception at tighter SNR limits.

Bit permutation before QAM mapping improves LDPC bit-to-constellation association and raises SNR toward quasi error-free reception.

Finite-field non-binary LDPC mapping improves error correction with shorter code lengths while keeping decoding complexity manageable.

Optimized constellation mapping with LDPC and CO-OFDM raises few-mode fiber data rates while lowering OSNR needs and BER over long distances.

Permuting QC-LDPC codeword bits across cyclic blocks improves constellation mapping in spatial multiplexing and boosts reception performance.

Scores based on unsatisfied check nodes let LDPC decoders improve error correction while avoiding explicit message passing and routing delays.

Parallel section and cyclic-block permutations cut QC LDPC bit interleaving latency while preserving constellation mapping for iterative decoding.

A two-stage permutation of QC-LDPC cyclic blocks and bits improves constellation mapping robustness in spatial multiplexing receivers.

By grouping QC-LDPC cyclic blocks into folding sections, this interleaving scheme improves parallel mapping flexibility while reducing latency.

Folding-section mapping and cyclic-block permutation improve QC-LDPC BICM parallelism, lowering interleaving latency and bit-error rate.

Modulation-specific bit permutation improves LDPC-to-QAM bit mapping, lowering SNR needs for quasi-error-free 64QAM reception.

A cyclic parity block and recursion path avoid inverse-matrix storage, cutting LDPC encoder memory and computation for real-time links.

Capacity-optimized geometric constellations let digital links transmit at lower SNR or higher data rates while improving spectral efficiency.

Different LDPC code constructions across modulation levels improve decoding speed and bit-error performance in high-speed digital transmission.

A relaxed half-stochastic LDPC decoder cuts decoding complexity and lowers error floors for higher-throughput, more reliable links.

New LDPC, BCH, interleaving, and APSK constellations extend satellite links below -3 dB and above 15.5 dB with finer Es/N0 granularity.

LDPC coding and bit interleaving help multi-level memory distinguish adjacent signal levels, improving data density and read reliability.

Geometric shaping repositions constellation points to narrow the SNR gap to Gaussian capacity, enabling higher data rates or lower power.

Termination length is set from information size and coding rate to preserve LDPC-CC error correction and transmission efficiency.

Sub-circulant codeword conversion enables parallel LDPC processing to improve decoding performance while limiting power use and die space.

Flash controllers switch LDPC code rates as P/E cycles rise, balancing storage efficiency, error protection, and SSD lifespan.

Tailored interleaver permutation improves LDPC bit-to-constellation association, raising SNR for 16QAM, 64QAM, and 256QAM reception.

Column-wise interleaving and substream demultiplexing align LDPC bits with QAM symbol positions to lower error probability.

Partial hard limiting at LDPC check nodes suppresses trapping-set error floors and improves low-SNR decoding for 8-PSK, 16-APSK, and 32-APSK.

Allocates unequally protected 64QAM and 16QAM bits to LDPC variable nodes by check-node degree to improve error correction and lower bit errors.

Factoring the parity-check matrix around an invertible cyclic block cuts inverse-matrix storage and speeds LDPC encoding hardware.