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Interleaving iterative multi-user communication method based on the network coding cooperative relay

A technology of network coding and cooperative relay, applied in diversity/multi-antenna systems, preventing/detecting errors through diversity reception, etc., can solve problems such as strict requirements for RF filter design, improve transmission accuracy, and reduce path loss , The effect of reducing the transmission bit error rate

Inactive Publication Date: 2009-10-28
FUDAN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

This method has loose requirements on the management of time synchronization, but has strict requirements on the design of RF filters.

Method used

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  • Interleaving iterative multi-user communication method based on the network coding cooperative relay
  • Interleaving iterative multi-user communication method based on the network coding cooperative relay
  • Interleaving iterative multi-user communication method based on the network coding cooperative relay

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Embodiment Construction

[0025] For the interleaving and iterative multi-user base station receiving communication method based on network coding relay proposed by the present invention, its specific implementation steps are as follows:

[0026] 1. The data is random data subject to Gaussian distribution.

[0027] 2. Generate a set of pseudo-random interleaving patterns and distribute them to each user interleaver. At the same time, the relay node and the base station receiver also store this set of interleaving patterns.

[0028] 3. The system works in two time slots:

[0029] (1) First time slot transmission processing

[0030] In the first time slot, the medium access layer of the target user and the interfering user sets a certain transmission power for the data to be transmitted, and transmits the data to the physical layer transmission module; in the physical layer transmission module, the data will first Carry out channel coding (such as: repetition code coding), then perform bit interleavin...

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Abstract

The invention belongs to the wireless communication technology field, in particular relates to a double time slot interleaving iterative multi-user communication method based on the network coding cooperative relay. The method adopts a wireless relay system model, communication nodes are divided into a target user node, an interference user node, a relay node and a base station node; the relay node is provided with a baseband processing module, and carries out network coding to relay data; and in addition, a base station receiver utilizes the interleaving iterative interference elimination improvement algorithm of double time slot network coding to carry out the multi-user signal detection. The method can provide space diversity gain for the base station of a receiving terminal and reducepath loss, can realize higher transmission reliability compared with the traditional multi-user system, and synchronously can reduce the time of relay transmission and improve the system capacity.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an interleaved iterative multi-user communication method based on network coding cooperative relay. Background technique [0002] In a traditional wired communication network, data is basically transmitted through a router using a store-and-forward mechanism. The information is transmitted from the source node to the destination node through the router node. Generally speaking, the intermediate nodes of the network do not perform any data processing process. [0003] With the rapid development of multimedia services, the application of large-capacity file transfer is becoming more and more extensive. Increasing network throughput, reducing transmission bit error rate, and reducing network energy consumption are the focus of the development of today's communication networks, and the theory of network coding (network coding) was born from this. The cen...

Claims

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Application Information

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IPC IPC(8): H04L1/02H04B7/02
Inventor 周小林方朝曦胡蝶单杭冠
Owner FUDAN UNIV
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