We propose a general method for constructing Tanner graphs having a large girth by establishing edges or connections between symbol and check nodes in an edge-by-edge manner, called progressive… (More)
Various log-likelihood-ratio-based belief-propagation (LLR-BP) decoding algorithms and their reduced-complexity derivatives for low-density parity-check (LDPC) codes are presented. Numerically… (More)
We propose a general method for constructing Tanner graphs with large girth by progressively establishing edges or connections between symbol and check nodes in an edge–by–edge manner, called… (More)
Nanotechnology is the science of understanding matter and the control of matter at dimensions of 100 nm or less. Encompassing nanoscale science, engineering, and technology, nanotechnology involves… (More)
Write amplification is a critical factor limiting the random write performance and write endurance in storage devices based on NAND-flash memories such as solid-state drives (SSD). The impact of… (More)
Adaptive signal processing algorithms derived from LS (least squares) cost functions are known to converge extremely fast and have excellent capabilities to " track " an unknown parameter vector.… (More)
Efficient implementations of the sum-product algorithm (SPA) for decoding low-density parity-check (LDPC) codes using loglikelihood ratios (LLR) as messages between symbol and parity-check nodes are… (More)
Today's data storage systems are increasingly adopting low-cost disk drives that have higher capacity but lower reliability, leading to more frequent rebuilds and to a higher risk of unrecoverable… (More)
Rate-compatible low-density parity-check (LDPC) codes obtained from the class of array LDPC codes are presented. The design methodology described herein retains practical advantages of array LDPC… (More)