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Relay Transmission Method Based on Distributed 3-d Turbo Codes

A transmission method and relay node technology, applied in transmission systems, digital transmission systems, radio relay systems, etc., can solve the problem that distributed Turbo codes are difficult to obtain frame error rate performance, and reduce the probability of error propagation and coding. Low gain, the effect of achieving system performance

Inactive Publication Date: 2016-04-13
XIDIAN UNIV
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Problems solved by technology

Limited by the performance of Turbo codes with high SNR, it is difficult for distributed Turbo codes to achieve satisfactory frame error rate performance in relay transmission.
[0006] Therefore, in the existing multiple access relay system, how to design a relay transmission method using the 3-DTurbo code that solves the problem of the Turbo code with a lower error floor is a problem that needs to be solved at present.

Method used

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  • Relay Transmission Method Based on Distributed 3-d Turbo Codes
  • Relay Transmission Method Based on Distributed 3-d Turbo Codes
  • Relay Transmission Method Based on Distributed 3-d Turbo Codes

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Embodiment Construction

[0037] Reference figure 2 with image 3 , The implementation steps of the present invention are as follows:

[0038] Step 1. The source node broadcasts data

[0039] (1.1) The source node S performs Turbo code encoding and modulation on its original data u:

[0040] Reference Figure 4 , The implementation of this step is as follows:

[0041] (1.1a) The source node S performs Turbo code encoding on the original data u (length K), and obtains the code sequence c=(u,p) 1 ,p 2 ) (Length N=3K), where u is the information sequence of the source node S coding sequence c, p 1 (Length is K) is the check sequence of the first component code of the source node S code sequence c, p 2 (Length is K) is the check sequence of the second component code of the source node S coding sequence c; the Turbo coding method used by the source node can be selected from existing methods, see: ShuLin, Daniel J. Costello, Jr ., "Error Control Coding", Machinery Industry Press, 2007;

[0042] (1.1b) The source nod...

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Abstract

The invention discloses a distributed 3-D Turbo code-based relay transmission method which mainly solves the problem of higher frame error rate of the existing distributed Turbo code. The distributed 3-D Turbo code-based relay transmission method comprises the steps that a source node broadcasts data; a relay node carries out Turbo decoding on the received signal, and Turbo code coding same with that of the source node on decoded information, a check bit is selected for carrying out third-dimensional coding by using an osmotic coefficient, and a modulated check bite output by the third dimension is sent to a destination node; and the destination node receives information transmitted by the relay node, and then carries out 3-D Turbo code decoding together with the received source information. The distributed 3-D Turbo code-based relay transmission method is capable of realizing effective compromise of decoding property and relay complexity through modulating a relay position and changing the osmotic coefficient, and can be used in a wireless multiple access relay network.

Description

Technical field [0001] The present invention belongs to the field of wireless communication technology, and relates to channel coding and relay transmission, specifically a method of applying 3-D Turbo code to relay transmission. Background technique [0002] The use of relay nodes to help mobile users forward data can obtain additional diversity gain and improve the frame error rate performance of the receiving end. It is one of the effective means to improve the quality of mobile users' calls at the edge of the cell. [0003] The existing wireless multiple access relay network, such as figure 1 Shown. It consists of a source node, a relay node and a destination node. When its source node communicates with the destination node with the help of the relay node, it needs two time slots, that is, the source node occupies one time slot to broadcast data to the relay node and the destination node, and the relay node occupies one time slot to help The source node forwards the data to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B7/15
Inventor 孙岳李亚锋李颖翟绪论
Owner XIDIAN UNIV
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