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Beamforming method and beamforming device

A beamforming method and data symbol technology, applied in the field of communication, can solve problems such as large channel diversity gain, unstable performance, and small channel diversity gain, and achieve the effect of multi-diversity gain and stable and reliable performance

Active Publication Date: 2015-02-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0028] It can be seen from the expression (2-7) that when the number of receiving antennas N=2, the received signal can only obtain the second-order channel gain When the channel changes, the shaped gain fluctuates greatly, the performance is unstable, and the channel diversity gain obtained is small, which is not as large as the channel diversity gain obtained by transmit diversity

Method used

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  • Beamforming method and beamforming device
  • Beamforming method and beamforming device
  • Beamforming method and beamforming device

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Embodiment Construction

[0045] Embodiments of the present invention provide a beamforming method and device, which are used to achieve more channel diversity gains and more stable performance obtained by a single-stream beamforming technique.

[0046] An embodiment of the present invention provides an enhanced single-stream beamforming technology, which will be described below from a signal sending end and a receiving end respectively.

[0047] see image 3 , at the signal sending end, a beamforming method provided by an embodiment of the present invention includes:

[0048] S101. The signal transmitting end maps the modulated data symbols to at least two layers to obtain data symbols of each layer;

[0049] S102. The signal transmitting end maps the data symbols of each layer to at least two antenna ports respectively, to obtain the data symbols of each antenna port;

[0050] S103. The signal transmitting end maps the data symbols of each antenna port to physical antennas, and sends the signal to ...

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Abstract

The invention discloses a beamforming method and a beamforming device which are used for acquiring more diversity gain and more stable and more reliable performance. The beamforming method comprises the following steps that a signal sending end maps a modulated signal symbol to at least two layers, and the data sign of each layer is obtained; the signal sending end respectively maps the data sign of each layer onto at least two antenna ports, and the data sign of each antenna port is obtained; and the signal sending end respectively maps the data sign of each antenna port to a physical antenna, and sends the data sign of each antenna port to a signal receiving end.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a beamforming method and device. Background technique [0002] Such as figure 1 As shown, beamforming technology is a multi-antenna transmission technology applied to small-pitch antenna arrays. The main principle is to use the strong correlation of spatial channels and the principle of wave interference to generate a strong directional radiation pattern, so that the radiation pattern The main lobe of the beam adaptively points to the user's incoming wave direction, which can improve the received signal-to-noise ratio. At the same time, if the orientation of other users is known, the nulling direction of the beam can be aligned with the orientation of other users, thereby further reducing the interference between users. To improve system capacity or coverage, beamforming technology has been widely used in wireless communication systems such as TD-SCDMA and LTE. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08
Inventor 李远军汪玲蔡月民
Owner DATANG MOBILE COMM EQUIP CO LTD