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Apparatus and method for channel encoding and decoding in communication system using low-density parity-check codes

A low-density parity, communication system technology, applied in the field of effectively generating LDPC codes and implementing channel encoding and decoding, can solve problems such as underutilized LDPC code implementations, and ensure scalability and flexibility. The effect of channel transmission and fast data processing speed

Active Publication Date: 2013-07-31
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

[0004] LDPC codes, first introduced by Gallager in the 1960s, remain underutilized due to their complex implementation, which so far surpasses the state of the art at the time

Method used

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  • Apparatus and method for channel encoding and decoding in communication system using low-density parity-check codes
  • Apparatus and method for channel encoding and decoding in communication system using low-density parity-check codes
  • Apparatus and method for channel encoding and decoding in communication system using low-density parity-check codes

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Embodiment Construction

[0117] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same or similar components are denoted by the same or similar reference numerals even if they are shown in different drawings. Detailed descriptions of structures or processes known in the art are omitted in order to avoid obscuring the subject matter of the present invention.

[0118] The present invention provides a method by which, in a system for applying shortening and puncturing to LDPC encoding, the ratio of shortened bits to punctured bits is changed by a predetermined rule to minimize the number of bits due to shortening A change in effective reception range due to a fixed ratio to punctured bits.

[0119] Figure 5 is a block diagram showing the configuration of a transceiver in a communication system using an LDPC code to which an embodiment of the present invention is applied.

[0120] refer to Figure 5 , th...

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Abstract

A channel coding / decoding method and an apparatus thereof in a communications system using an LDPC code reducing the different block length are provided to maintain effective reception range by using information of the LDPC. A receiver estimates a punch / reduction pattern from the received signal(1101). The receiver determines the presence of hole or the shortened bit(1103). In the receiving device is the decision procedure, it determines not to exist of hole or the shortened bit. The receiver performs the decoding process(1109). The hole / reduction pattern is delivered to the receiving device to an LDPC encoder(1105). The LDPC decoder sets up the punched bit as the disappearance. The receiving device performs the decoding process.

Description

[0001] This application is an invention patent application with an application date of March 3, 2009, an application number of 200980107576.5, and the title of the invention is "A device and method for channel coding and decoding in a communication system using low-density parity-check codes" divisional application. technical field [0002] The present invention generally relates to a communication system using a Low Density Parity Check (LDPC) code, and more particularly, to an apparatus and method for efficiently generating an LDPC code and realizing encoding and decoding of a channel. Background technique [0003] Inter-symbol interference (ISI) as well as various noises and channel fading significantly degrade the performance of a link in a wireless communication system. Therefore, it is necessary to develop techniques for overcoming the noise, fading, and ISI for the purpose of realizing a high-speed digital communication system that requires a large amount of data proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/11H03M13/155H03M13/6362H03M13/6508
Inventor 明世澔权桓准金宰烈林妍周尹圣烈李学周郑鸿实
Owner SAMSUNG ELECTRONICS CO LTD
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