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A broadband regeneration multi-hop relay communication method based on dual time slot interweaving and iteration

A technology of multi-hop relay and communication method, applied in the field of wireless multi-hop relay communication based on double-slot interleaving iteration

Inactive Publication Date: 2011-06-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Current multi-hop relay research and products are mostly limited to narrowband communication systems

Method used

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  • A broadband regeneration multi-hop relay communication method based on dual time slot interweaving and iteration
  • A broadband regeneration multi-hop relay communication method based on dual time slot interweaving and iteration
  • A broadband regeneration multi-hop relay communication method based on dual time slot interweaving and iteration

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Embodiment Construction

[0048] The broadband regenerative multi-hop relay communication method proposed by the present invention is simulated and analyzed, and the specific steps are as follows:

[0049] 1. The experimental data is random data subject to Gaussian distribution.

[0050] 2. A group of pseudo-random interleaving patterns is generated and distributed to each node interleaver of the multi-hop relay system.

[0051] 3. The relay system sets the transmission time of each time slot according to the distance of each hop relay stage, the type of channel repetition coding, and according to the normalized allocation method of time resources of two time slots in the present invention, see (1 ) formula-(6) formula.

[0052] 4. The relay nodes of the system work in turn in two time slots:

[0053] (1) First time slot transmission processing

[0054] In the first time slot, the medium access layer of the source node and the odd-numbered working nodes sets a certain transmission power for the data...

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Abstract

The invention belongs to the field of wireless communications technology, specifically, a method for broadband OFDM regenerative multi-hop relay communications based on double-time-slot interleaved iteration. According to the invention, all relay nodes of a system have baseband processing modules and different baseband pseudo-random interleavers through which different interleaving patterns are generated and distributed to each multi-hop relay node to eliminate mutual interference of multi-hop signals with interleaved iterative interference cancellation algorithm and to divide a relay flow into two time-slot stages for running by turns with the application of a distributing method of time resource normalization. The method of the invention can realize higher system capacity than traditional TDMA and FDMA relay networks, avoid defect of signal self-coupling of OFDM relay nodes, the elimination operations on coupling interferences and signal mutual interferences among multi-hop nodes. Therefore, traditional omnidirectional antennas can be used, thus reducing complexity of the system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a wireless multi-hop relay communication method based on double time slot interleaving iteration. Background technique [0002] Multi-hop relay (Multi-hop Relay) is a very important wireless communication technology. With the rapid development of wireless multimedia services, users have higher and higher requirements on data communication capabilities and transmission quality. However, due to the influence of obstacles, shadows and other factors in the complex wireless environment, many communication dead spots are formed. These will make it difficult for users to obtain continuous high-speed and high-quality communication services. Many international manufacturers are developing multi-hop relay communication equipment and formulating corresponding technical specifications, trying to use the development of new relay stations to reduce the cost of comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L27/26H04W40/22
CPCY02D30/70
Inventor 周小林方朝曦李樑宾
Owner FUDAN UNIV
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