LDPC

Convergence-Optimized Variable Node Structure for Stochastic LDPC Decoder

By using stochastic computation, a fully-parallel low-density parity-check (LDPC) decoder can be implemented using a lower wire complexity. In order to enhance the decoder performance, probability tracers, such as up/down counters, are added at each …

Strategies for Reducing Decoding Cycles in Stochastic LDPC Decoders

This brief presents three strategies, including initialization based on Look Up Table (LUT), postprocessing based on bit flipping and hard decision based on the posterior information, to reduce the number of decoding cycles (DCs) for stochastic …

An Area-Efficient Architecture for Stochastic LDPC Decoder

Stochastic computation is an excellent approach for low-density parity-check codes decoding. By adding edge memories at each edge in the Tanner graph, fully parallel hardware implementation can be designed with much lower wire complexity. This …

Latency-Optimized Stochastic LDPC Decoder for High-Throughput Applications

Stochastic decoding can be applied to Low-Density Parity-Check codes in order to achieve high throughput with less area. However, most architectures suffer from large decoding latencies, due to the mechanism of stochastic computation. In this paper, …

An Efficient Multirate LDPC-CC Decoder With a Layered Decoding Algorithm for the IEEE 1901 Standard

An area-efficient multirate low-density parity-check convolutional code (LDPC-CC) decoder is presented in this brief. Using the layered decoding algorithm, the decoder achieves a bet- ter performance than the message-passing algorithm; the extrinsic- …

A High-Throughput LDPC decoder For Optical Communication

As Optical Communication is on the way, conventional LDPC decoders do not work well with the requirement for high throughput over 100 Gb/s. Many new LDPC decoder structures aiming at high throughput have been proposed, such as stochastic decoders, …