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Relay method and device based on space mapping

A technology of spatial mapping and relay nodes, applied in the shaping network of the transmitter/receiver, components of the baseband system, preventing/detecting errors through diversity reception, etc., can solve problems such as optimization of the overall transmission performance of the communication system , to achieve the effect of improving reliability and effectiveness, improving transmission performance, and solving the problem of noise amplification

Inactive Publication Date: 2012-11-07
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] However, the disadvantage of this relay system is that it does not optimize the overall transmission performance of the communication system

Method used

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  • Relay method and device based on space mapping
  • Relay method and device based on space mapping
  • Relay method and device based on space mapping

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] see figure 2 , introducing the structural composition of the relay node device based on spatial mapping used in the wireless access system of the present invention, the device is provided with: a backward filtering unit, a forward filtering unit, a control unit, a channel state information acquisition and storage unit and a space mapping unit, where

[0033] The backward filtering unit is used to receive the signaling sent by the control unit whether to enable precoding reception. If the previous hop node uses precoding, first use the product of the first channel matrix and the channel precoding matrix to generate an equivalent first channel Matrix, and then generate the receiving filter matrix according to the equivalent first channel matrix and the filt...

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Abstract

The invention relates to a relay node method and device based on space mapping used for a wireless access system. The relay node device comprises a backward filtering unit, a forward filtering unit, a control unit, a channel condition information obtaining and storing unit and a space mapping unit. The relay transmission method comprises the following steps: the backward and forward filtering units separately generate receiving filter matrix and transmitting preconditioning matrix according to the current state information of two channels and then transmit to the space mapping unit; the backward filtering unit filters the transmitting signal of the last hop node according to the receiving filter matrix and transmits the generated N first signals to the space mapping unit; the space mapping unit uses the generated space mapping matrix to map the received N first signals to the corresponding N second signals and transmits to the forward filtering unit; and the forward filtering unit performs transmitting preconditioning to the N second signals according to the transmitting preconditioning matrix and amplifies and forwards to the next hop node. The invention can improve the transmission performance of the system.

Description

technical field [0001] The present invention relates to a relay transmission technology of a wireless communication system, to be precise, to a relay method and device based on space mapping, and belongs to the technical field of wireless communication. Background technique [0002] With the application of various new mobile technologies, the number of global mobile communication users and the traffic volume of mobile data are increasing rapidly. While this growth brings benefits, it also brings some new problems that must be solved: increasing system capacity and improve spectrum resource utilization. Therefore, how to use limited spectrum resources to provide more comprehensive services for more users has become one of the important issues concerned by scientific and technological personnel in the industry at this stage. [0003] The traditional cellular system lacks spectrum resources, the needs of cell edge users are often not met, and the data transmission rate is low....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L25/03
Inventor 郑侃龙航旷婧华申山山王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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