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Dynamic decoding and forwarding relay method based on optimal time distribution

A decoding and forwarding, optimal time technology, applied in radio relay systems, active power relay systems, electrical components, etc., can solve the problem that the power control scheme cannot be directly applied, achieve good interference prevention effect, and improve diversity performance Effect

Inactive Publication Date: 2014-09-03
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Therefore, the above power control scheme cannot be directly applied to this scenario

Method used

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  • Dynamic decoding and forwarding relay method based on optimal time distribution
  • Dynamic decoding and forwarding relay method based on optimal time distribution
  • Dynamic decoding and forwarding relay method based on optimal time distribution

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] The invention discloses a cooperative diversity transmission scheme in a wireless network, including: setting an optimal time allocation ratio according to the value of the multiplexing gain; judging whether the channel between the sending node and the destination node is based on the time allocation ratio and the instantaneous channel gain coefficient It can support the successful transmission of the current data packet within the preset time interval; if the conditions are not met, each da...

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Abstract

The invention provides a dynamic decoding and forwarding relay method based on optimal time distribution. The method includes the steps that an optimal time distribution ratio is set according to a value of a multiplexing gain; whether a channel between a transmitting node and a destination node can support successful transmission of a current data package within a preset time interval is judged according to the time distribution ratio and a transient channel gain coefficient; if the answer is negative, data packages are transmitted in the corresponding time frames of the data packages in a dynamic decoding and forwarding relay method; if the answer is positive, the current data package is directly sent to the destination node from the transmitting node within the preset time interval, then the next data package begins to be transmitted from the transmitting node until the next time frame is finished, and meanwhile transmission of the next data package is assisted by means of a relay node in the dynamic decoding and forwarding method. According to the method, due to the fact that distribution of transmission time is optimized, transmission modes can be switched over self-adaptively according to state information of the channel, requirements of communication services with limited delay can be met, and meanwhile, diversity of the system can be improved.

Description

technical field [0001] The invention relates to the technical field of cooperative wireless communication, in particular to a dynamic decoding and forwarding relay method based on optimal time allocation. Background technique [0002] Recently, multiple relay protocols have been incorporated into various cellular wireless communication standards, such as WiMAX, 3GPP LTE-Advanced, etc. Common relay protocols mainly include fixed gain amplification and forwarding, variable gain amplification and forwarding, static decoding and forwarding, and dynamic decoding and forwarding. Among them, the dynamic decoding and forwarding relay protocol has been proved to have excellent diversity multiplexing trade-off performance. For the basic three-node (sending node, destination node, relay node) relay transmission system, in the region of low multiplexing gain, dynamic decoding and forwarding With the gain region, the diversity performance of the dynamic decode-and-forward protocol is a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04B7/15
Inventor 苏胤杰蒋铃鸽何晨
Owner SHANGHAI JIAO TONG UNIV
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