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Turbo code/network coding-united relay transmission and corresponding decoding method

A network coding and decoding technology, which is applied in the field of wireless communication, can solve the problems of inability to perform parallel decoding and high decoding complexity, and achieve the effect of parallel decoding and low decoding complexity

Inactive Publication Date: 2013-09-25
XIDIAN UNIV
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Problems solved by technology

[0008] The existing joint channel-network coding decoding method is to jointly decode the received signal, the decoding complexity is relatively high, and it cannot be decoded in parallel, so how to design a simple decoding method is also currently to be solved a question of

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  • Turbo code/network coding-united relay transmission and corresponding decoding method
  • Turbo code/network coding-united relay transmission and corresponding decoding method
  • Turbo code/network coding-united relay transmission and corresponding decoding method

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Embodiment Construction

[0034] refer to figure 2 , flow chart of the present invention, implementation steps are as follows:

[0035] Step 1, the source node broadcasts data.

[0036] (1.1) The source node S1 has its own original data information d S1 Perform Turbo encoding to get your own encoding sequence i 1 =(d 1 ,p 11 ,p 12 ), the source node S2 for its own original data information d S2 Perform Turbo encoding to get your own encoding sequence i 2 =(d 2 ,p 21 ,p 22 ), where d 1 ,p 11 and p 12 Respectively for the source node S1 coding sequence i 1 The information sequence, the first set of check sequence and the second set of check sequence; d 2 ,p 21 and p 22 coded sequence i for source node S2 respectively 2 The information sequence, the first set of check sequences and the second set of check sequences; the two source nodes use the same Turbo encoding method, and the Turbo encoding method can choose one of the existing methods, see: Shu Lin, Daniel J. Costello, Jr., "Error ...

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Abstract

The invention discloses a Turbo code / network coding-united relay transmission and corresponding decoding method, which mainly aims to solve the problems of low forwarding efficiency of a relay node and high decoding complexity of a destination node in the prior art. The method is implemented by the following steps that: source nodes broadcast data; the relay node performs Turbo decoding on received signals, performs Turbo coding and network coding modulation on decoded information, constructs a forwarding sequence according to the volume of the data to be forwarded, and forwards the data; and the destination node corrects the received signals, and performs Turbo decoding on the corrected signals of the two source nodes respectively. By the method, effective compromise between the forwarding efficiency of the relay node and the decoding performance of the destination node is realized; and the method has the advantage of low decoding complexity, and can be used for a wireless multiple access relay network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to channel coding and network coding, in particular to a relay transmission and corresponding decoding method combining Turbo code and network coding, which can be used in wireless multiple access relay networks . Background technique [0002] Using relay nodes to help mobile users forward data can obtain additional diversity gain and improve the bit error BER performance of the receiving end, which is one of the effective means to improve the call quality of mobile users at the edge of the cell. [0003] Existing wireless multiple access relay networks such as figure 1 shown. It consists of two source nodes, a relay node and a destination node. When its two source nodes communicate with the destination node with the help of a relay node, it usually needs four time slots, that is, the two source nodes respectively occupy a time slot to broadcast data to the relay nod...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H03M13/39
Inventor 李颖梁鲁娟侯伟孙岳
Owner XIDIAN UNIV
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