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

一种低密度奇偶、通信系统的技术，应用在有效地生成LDPC码并实现信道的编码和解码领域，能够解决LDPC码实现方式未被充分利用等问题，达到确保可扩展性和灵活性、快数据处理速度、确保信道传输的效果

Active Publication Date: 2013-09-04
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

[0003] 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

An apparatus and a method for channel encoding / decoding in a communication system are provided. The apparatus and the method generate LDPC-encoded blocks with various lengths from an LDPC codewith fixed length in a communication system using a Low-Density Parity-Check (LDPC) code. The apparatus and the method perform shortening using a predetermined number of shortened bits and perform LDPC encoding. The apparatus and the method apply predetermined rules according to the predeterminednumber of shortened bits and determine the number of bits to be punctured, and perform puncturing based on the determined number of punctured bits.

Description

technical field [0001] 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 [0002] Inter-symbol interference (ISI) and various noises and channel fading significantly degrade the performance of the link of the 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 processing, high-speed data processing, and high reliability of data, such as The next generation of mobile communications, digital broadcasting and mobile Internet. Recently, active research has been conducted on the use of error-correcting codes as a method for effectively restoring distorted information to its original st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/11H03M13/00
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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