What is LDPC encoding and decoding?
In information theory, a low-density parity-check (LDPC) code is a linear error correcting code, a method of transmitting a message over a noisy transmission channel. An LDPC is constructed using a sparse Tanner graph (subclass of the bipartite graph).
What is regular LDPC code?
LDPC codes are linear block codes, based on low-density parity check matrices H, i.e the number of non-zero elements in the matrix is much less than the number of zeros. The code rate R of an LDPC code is given by:(1) R = N – M N where N and M are respectively the number of columns and rows of H.
Is LDPC a block code?
Low – density parity check (LDPC) code is a linear error-correcting block code, suitable for error correction in large block sizes transmitted via very noisy channels.
Is LDPC a convolutional code?
The convolutional counterparts of LDPC block codes are LDPC convolutional codes. Analogous to LDPC block codes, LDPC convolutional codes are defined by sparse parity-check matrices, which allow them to be decoded using iterative mes- sage-passing algorithms.
What is LDPC in WIFI?
The Low-Density Parity-Check (LDPC) is a code that enables or disables erroneous correction to reduce the probability of data loss in noisy channels. The Rate Adaptation algorithm automatically disables LDPC coding when working at physical (PHY) rates higher than 162.
Is LDPC a FEC?
The interest of the wireless industry in forward error correction (FEC) with low-density parity check (LDPC) codes has surged over the last few years. In the era of Gigabit-per-second transmission rates and physical limitation of a channel capacity, every useful information bit has a value on its own.
What is Ldpc in WIFI?
Is Ldpc a FEC?
What is LDPC base graph?
LDCP Base Graph Base Graph is a Matrix where each of the entries can be further expanded based on the expansion factor Zc. Base Graph 1 (BG1) : With Matrix size 46X68 entries –> For Large Transport Block. Base Graph 2(BG2): With matrix size 42X52 entries–> For Smaller Transport Block.
Who invented Ldpc?
R. Gallager
Abstract: LDPC codes were invented in 1960 by R. Gallager. They were largely ignored until the discovery of turbo codes in 1993. Since then, LDPC codes have experienced a renaissance and are now one of the most intensely studied areas in coding.