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Low density parity code (LDPC) encoding and decoding devices and encoding and decoding methods thereof

A low-density parity and coding device technology, which is applied to a low-density parity code coding device and a decoding device and the fields of coding and decoding thereof, and can solve problems such as possible low efficiency of messages

Active Publication Date: 2009-12-23
SAMSUNG ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it may be inefficient for a communication system to transmit / receive coded messages using two frequency bands when the states of wireless channels in the two frequency bands are not considered to be the same, for example, where the two frequency bands are not adjacent to each other, where , encode the encoded message according to the same scheme

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  • Low density parity code (LDPC) encoding and decoding devices and encoding and decoding methods thereof
  • Low density parity code (LDPC) encoding and decoding devices and encoding and decoding methods thereof
  • Low density parity code (LDPC) encoding and decoding devices and encoding and decoding methods thereof

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[0048] The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the media, devices, methods and / or systems described herein. Accordingly, various changes, modifications, and equivalents of the systems, methods, devices, and / or media described herein will be suggested to those of ordinary skill in the art. Also, descriptions of well-known functions are omitted for increased clarity and conciseness.

[0049] figure 1 A secondary system 120 using primary system 110 and cognitive radio technology is shown according to an exemplary embodiment.

[0050] refer to figure 1 , the secondary system 120 includes a cognitive radio base station 121 and a cognitive radio terminal 122 .

[0051] The cognitive radio base station 121 and the cognitive radio terminal 122 can recognize all or part of the frequency band located in the primary system 110 as an available frequency band (f 1 , f 2 ). In addition, the cognitive radio base st...

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Abstract

A low density parity code (LDPC) encoding and decoding devices and encoding and decoding methods thereof are provided. An LDPC encoding device includes an information obtaining unit which obtains status information of at least two frequency bands, a matrix generation unit which generates a parity check matrix based on the status information, the parity check matrix including sub matrices which correspond to the at least two frequency bands, and an encoder which generates data bits and parity bits using an LDPC with the generated parity check matrix.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2008-0057099 filed with the Korean Intellectual Property Office on Jun. 17, 2008, which is hereby incorporated by reference in its entirety. technical field [0002] The following description relates to an encoding and decoding technique, and more particularly, to a low-density parity code encoding and decoding technique in a communication system using a plurality of frequency bands. Background technique [0003] Active research is being conducted to transmit various multimedia services at high speed and high quality in a wireless communication environment. Among the technologies involved, channel coding is one area of ​​technology that has attracted attention. [0004] For example, encoding schemes according to Low Density Parity Codes (LDPC) that can achieve the lowest Bit Error Rate (BER) compared to other encoding techniques are gaining attention. In addition, new technologies with lower comp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/09
CPCH03M13/1148H04L1/04H03M13/356H04L1/0009H03M13/1102H03M13/353H03M13/11
Inventor 崔贤镐张景训朴正贤赵容皓朴东祚
Owner SAMSUNG ELECTRONICS CO LTD