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Downstream wave beam shaping method and apparatus thereof

A beamforming method and beamforming technology, applied in the directions of space transmit diversity, diversity/multi-antenna systems, etc., can solve the problems of large storage capacity and occupation, and achieve the effect of reducing storage capacity and improving block error rate performance.

Inactive Publication Date: 2014-04-09
TD TECH COMM TECH LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this method needs to store the average value of the spatial covariance matrix of the previous subframe, so it needs to occupy a large amount of storage

Method used

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  • Downstream wave beam shaping method and apparatus thereof
  • Downstream wave beam shaping method and apparatus thereof
  • Downstream wave beam shaping method and apparatus thereof

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] figure 1 It is a flow chart of Embodiment 1 of the downlink beamforming method of the present invention. As shown in the figure, the method includes the following steps:

[0027] Step 101, acquire and save the weight value of the average spatial covariance matrix of the last subframe of the uplink beam corresponding to the downlink beam to...

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Abstract

The invention provides a downstream wave beam shaping method and an apparatus thereof. The method comprises the following steps that: a weight of an average spatial covariance matrix of a previous subframe of an uplink wave beam corresponded to a to-be-shaped downstream wave beam is obtained and stored; the average spatial covariance matrix of the previous subframe is reconstructed according to the weight of the average spatial covariance matrix of the previous subframe; smooth filtering processing is carried out on the average spatial covariance matrix of the previous subframe and an instantaneous spatial covariance matrix of a current subframe of the uplink weave beam so as to obtain a current subframe average spatial covariance matrix; and according to a weight of the current subframe average spatial covariance matrix, wave beam shaping is carried out on the downstream wave beam. According to the invention, a block error rate performance is improved; and an occupied storage content during the operation process is reduced.

Description

technical field [0001] The invention relates to a downlink beam forming method and device, belonging to the field of third-generation mobile communication. Background technique [0002] The basic principle of beamforming technology is to form a directional beam in space by changing the weight of each antenna unit. The main beam tracks the signal of the desired user equipment (User Equipment, referred to as: UE) and forms a null in the direction of the interfering UE. , which greatly reduces the interference of the system and improves the frequency utilization. [0003] The existing Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) communication system needs to apply smart antenna technology. The smart antenna can generate multiple beams at the same time. According to the distribution of communication terminals, Realize downlink beamforming within a 360-degree range. [0004] The existing technology directly uses the instantaneous spatial covarian...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
Inventor 张坚强李小捷赵琼
Owner TD TECH COMM TECH LTD
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