US 2022/0103187 A1 · LOW-DENSITY PARITY-CHECK (LDPC) DECODER OF RECONSTRUCTION-COMPUTATION-QUANTIZATION (RCQ) APPROACH FOR A STORAGE DEVICE

Abstract

A device is disclosed. The device may include an input buffer to receive a first low bit width message. A reconstruction circuit may implement a reconstruction function on the first low bit width message, producing a first high bit width message. A computation circuit may implementing a computation function on the first high bit width message, producing a second high bit width message. A quantization circuit may implementing a quantization function on the second high bit width message, producing a second low bit width message. A decision buffer may then store the second low bit width message. The reconstruction function and the quantization function may vary depending on an iteration and a layer of the device.

Claims20

Dependent claims

A device, comprising:

an input buffer to receive a first low bit width message;
a reconstruction circuit implementing a reconstruction function on the first low bit width message, producing a first high bit width message;
a computation circuit implementing a computation function on the first high bit width message, producing a second high bit width message;
a quantization circuit implementing a quantization function on the second high bit width message, producing a second low bit width message;
and
a decision buffer to store the second low bit width message,
wherein the reconstruction function and the quantization function vary depending on at least one of an iteration and a layer of the device.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/204,936Filed 17 Mar 2021

Priority

25 Sep 2020

Published

31 Mar 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H03M 13/6577
Purpose and implementation aspects: representation or format of variables, register sizes or word-lengths and quantization
H03M 13/1111
Decoding: soft-decision decoding, e.g. by means of message passing or belief propagation algorithms
H03M 13/1117
Soft-decision decoding, e.g. by means of message passing or belief propagation algorithms: using approximations for check node processing, e.g. an…
H03M 13/114
Scheduling of bit node or check node processing: shuffled, staggered, layered or turbo decoding schedules

Low-density parity-check (ldpc) decoder of reconstruction-computation-quantization (rcq) approach for a storage device

Life of this patent

Low-density parity-check (ldpc) decoder of reconstruction-computation-quantization (rcq) approach for a storage device

Life of this patent

Abstract

Claims20