Distributed cascade-based channel coding system and method thereof
A channel coding and distributed technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as limiting the number of users or implementing complex problems, and achieve the effect of improving relay transmission efficiency and reliability
Inactive Publication Date: 2012-02-15
BEIJING UNIV OF POSTS & TELECOMM
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[0006] The main purpose of the present invention is to provide a channel coding system and method based on distributed concatenation, so as to solve the problems existing in the prior art that the existing distributed concatenated block coding scheme limits the number of users or implements complex problems, wherein:
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[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] According to an embodiment of the present invention, a channel coding system based on distributed concatenation is provided, and the system includes: multiple user nodes, a relay node and a destination node.
[0022] refer to figure 1 , figure 1 It is an architecture diagram of a channel coding system based on distributed cascading according to an embodiment of the present invention. figure 1 It shows a user cooperative cluster in the wireless network system, the cooperative cluster includes N (N≥2) user nodes SN i (i=0, 1, 2, . . . , N-1), a relay node (RN) and a destination node (BN).
[0023] First, all user nodes in the wireless network system are divided into multiple user cooperative clusters, where a node (SN 0 ) as a re...
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The invention discloses a distributed cascade-based channel coding system and a method thereof. The system comprises a plurality of user nodes which are used for performing block code-based channel coding processing on acquired original information to acquire first-stage coding information and broadcasting the first-stage coding information to a relay node and a destination node respectively; the plurality of user nodes belong to a same user collaborative cluster; the relay node is used for performing decoding processing on the received first-stage coding information to acquire original information, performing block code-based joint channel coding processing on the original information to acquire second-stage coding information and forwarding check information in the second-stage coding information to the destination node; and the destination node is used for performing turbo decoding principle-based multi-user joint decoding processing to acquire the original information of the plurality of user nodes according to the first-stage coding information and the second-stage coding information. Through the system and the method, the relay transmission efficiency is increased and the reliability of a multi-user relay system is improved.
Description
technical field [0001] The invention relates to the communication field, in particular to a channel coding system and method based on distributed cascading. Background technique [0002] At present, in the data transmission of the digital communication network, in order to prevent information from being wrong, the user node performs channel coding on the information, and the relay node uses a channel decoder to reconstruct the information, and performs channel coding on the information again and sends it to the base station . The base station attempts to reconstruct the original information based on the channel information it receives. In the prior art, Turbo code is an iterative encoding and decoding scheme with good performance. [0003] According to one type of technical solutions in the prior art, block code schemes based on single-user, 2-user, and 4-user distributed concatenation are respectively proposed. Such technical solutions limit the number of users, and cann...
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IPC IPC(8): H04L1/00
Inventor 彭岳星辛海洋赵慧郑侃王文博
Owner BEIJING UNIV OF POSTS & TELECOMM