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Tensor model based channel estimation method and device

A technology of channel estimation and tensor model, which is applied in the field of channel estimation based on tensor model, and can solve problems such as unsuitable fast fading channel cooperative communication systems

Active Publication Date: 2015-05-06
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] However, the existing tensor model-based channel estimation methods are all proposed on the basis of assuming that the channel parameters are constant, so they are only suitable for cooperative communication systems with slow-varying channels, not for cooperative communication systems with fast-fading channels

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  • Tensor model based channel estimation method and device

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Embodiment Construction

[0064] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0065] see figure 1 , the embodiment of the present invention provides a tensor model-based channel estimation method, including the following steps:

[0066] 101: Establish an uplink signal system model of an uplink signal received by a base station in an uplink multi-user coordinated system.

[0067] 102: According to the system model of the uplink signal, establish a third-order tensor model of the uplink signal received by the base station in the uplink multi-user cooperative system, wherein the three dimensions of the third-order tensor model correspond to the uplink signal, the angle of arrival and the time variation of the uplink signal respectively channel.

[0068] 103: According to the third-order tensor model, the new upli...

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Abstract

The invention relates to the technical field of communication, and provides tensor model based channel estimation method and device. The method comprises the steps of creating a three-order tensor model of an uplink signal received by a base station in an uplink multi-user coordination system according to the created uplink signal system model, wherein the three dimensions of the three-order tensor model are respectively corresponding to the uplink signal, an arrival angle and a time-varying channel of the uplink signal; performing blind tracking for the time-varying channel by the PARAFAC-LMST method or the PARAFAC-RLST method according to the three-order tensor model and the new uplink increase signal received by the base station to obtain the estimation value of the time-varying channel. The device comprises a first creating module, a second creating module and a channel estimation module. The device is applicable to a coordinative communication system of a slow-varying channel as well as the coordinative channel system of a rapid fading channel.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a tensor model-based channel estimation method and device. Background technique [0002] The performance of a wireless communication system is greatly affected by the wireless mobile channel, and multipath fading is an important factor affecting the wireless mobile channel. The cooperative diversity technology can reduce the impact of multipath fading by enabling the UEs with a single antenna to share the antenna with each other to form a virtual multi-antenna array to transmit or receive information. In a cooperative communication system, each user end with a single antenna can not only receive information sent by the base station, but also receive information sent by other user ends; each user end not only needs to transmit its own information to the base station, but also It is necessary to transmit information of other clients to the base station as a cooperat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02
Inventor 张天魁张颖慧曾志民葛安盟
Owner BEIJING UNIV OF POSTS & TELECOMM
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