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Processing method and device for pilot frequency in multi-point cooperative transmission system

A multi-point coordination and transmission system technology, applied in the field of communication, can solve the problems of consuming system transmission capacity and completely orthogonal pilots occupying spectrum resources, etc., and achieve the effect of reducing the number of pilots and reducing the occupation

Inactive Publication Date: 2014-06-04
TSINGHUA UNIV
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Problems solved by technology

[0005] This application provides a pilot processing method and device in a coordinated multi-point transmission system to solve the problem that completely orthogonal pilots occupy spectrum resources and consume system transmission capacity

Method used

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  • Processing method and device for pilot frequency in multi-point cooperative transmission system
  • Processing method and device for pilot frequency in multi-point cooperative transmission system
  • Processing method and device for pilot frequency in multi-point cooperative transmission system

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Embodiment Construction

[0049] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] refer to figure 1 , which provides a structural diagram of the coordinated multi-point transmission system described in the embodiment of the present application.

[0051] These include processors, base stations and mobile terminals.

[0052] The processor may be a single-chip microcomputer, FPGA (Field-Programmable Gate Array, Field-Programmable Gate Array) or a computer with data processing functions, which is not limited in this application.

[0053]The base station, that is, the public mobile communication base station, is a form of radio station, which refers to a radio transceiver station that transmits information between mobile phone terminals through a mobile communication switching cent...

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Abstract

The invention provides a processing method and a device for pilot frequency in a multi-point cooperative transmission system, in order to solve the problems of occupancy of frequency spectrum resource by fully orthogonal pilot frequency and consumption of system transmission capacity. The method comprises the following steps of: generating a pilot frequency matrix set and picking out a vector of a pilot frequency matrix as the pilot frequency from the pilot frequency matrix set, wherein a row vector in each pilot frequency matrix corresponds to an antenna of a base station; emitting corresponding pilot frequency through the antenna, wherein the pilot frequency emitted between base stations is non-orthogonal; and responding by a mobile terminal according to a pilot frequency estimation channel to detect channel quality. The non-orthogonal pilot frequency is used between the base stations, so that the orthogonality of the pilot frequency between all transmitting antennas in the base station is maintained. By using the non-orthogonal pilot frequency technology, distinguishing of pilot frequency sequences transmitted by different base stations can be realized by using large-size difference of the transmission channels for different cooperative base stations to reach a terminal; and thus, the amount of the system resource integrally occupied by the pilot frequency is reduced, and the consumption of the system resource is reduced.

Description

technical field [0001] The present application relates to communication technology, in particular to a pilot processing method and device in a coordinated multi-point transmission system. Background technique [0002] Coordinated Multi-Point (CoMP, Coordinated Multi-Point) technology has been proven to be a new mobile communication technology that can effectively suppress inter-cell interference, and has received extensive attention in the next generation mobile communication standardization process. Coordinated multi-point transmission technology is especially effective for improving the peak transmission rate of cell edge users. [0003] However, in a coordinated multi-point transmission system, in order to achieve joint processing of multiple cells, especially downlink joint transmission, it is often required that the receiver can estimate and feed back the channel state information (CSI, Channel State Information). At this time, it is necessary to estimate the channel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L5/00H04L25/02
Inventor 张秀军陈翔许希斌赵熠飞周世东王京
Owner TSINGHUA UNIV
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