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Joint channel large-scale fading estimation method based on spatial correlation and base station

A technology of large-scale fading and spatial correlation, applied in baseband system components, preventing/detecting errors through diversity reception, etc., to achieve the effects of easy implementation, convenient operation, and high reliability

Active Publication Date: 2014-01-22
TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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  • Joint channel large-scale fading estimation method based on spatial correlation and base station
  • Joint channel large-scale fading estimation method based on spatial correlation and base station
  • Joint channel large-scale fading estimation method based on spatial correlation and base station

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention provides a joint channel large-scale fading estimation method based on spatial correlation. The method comprises the following steps: acquiring the known position information, moving speeds and channel large-scale fading estimation values of users in a preset region; determining a spatial correlation matrix of channel large-scale fading among the users according to the known position information, moving speeds and channel large-scale fading estimation values of the users in the preset region; acquiring unknown user channel large-scale fading estimation values according to the spatial correlation of the spatial correlation matrix. According to the embodiment of the invention, unknown user channel large-scale fading estimation values can be obtained by using the spatial correlation according to the known user channel large-scale fading estimation values in the preset region, and the known user channel large-scale fading estimation accuracy is increased. The invention further provides a base station.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a joint channel large-scale fading estimation method based on spatial correlation and a base station. Background technique [0002] In a multi-user MIMO (Multiple-Input Multiple-Out-put, Multiple-Input-Multiple-Output) system, user scheduling at the base station needs to know the channel large-scale fading information of each user. In current large-scale channel fading estimation techniques of wireless communication systems, channel large-scale fading between different users and base stations is estimated independently. But in fact, there is a spatial correlation between the large-scale fading of these channels. Using the spatial correlation between channel large-scale fading, not only can the unknown user channel large-scale fading estimate be obtained from the known user channel large-scale fading estimate in the absence of a certain user channel large-scale fading esti...

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Application Information

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IPC IPC(8): H04L25/02H04L1/06
Inventor 张鑫张秀军肖立民赵熠飞许希斌王京
Owner TSINGHUA UNIV