Method and apparatus for transmitting data through polarization antenna

A polarized antenna and data symbol technology, applied in polarization/direction diversity, diversity/multi-antenna systems, and preventing/detecting errors through diversity reception, can solve problems such as unsatisfactory system performance and system performance deterioration, and achieve Reduce the disadvantages of beamforming and space-time coding, the effect of good diversity gain

Active Publication Date: 2013-06-05
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

However, in the scenario where the wireless channel changes rapidly, the system performance will be seriously deteriorated
[0004] To sum up, there is currently no solution for multiple groups of polarized antennas to provide services to users at the same time, and if the existing technology is directly applied, the system performance is not ideal

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  • Method and apparatus for transmitting data through polarization antenna
  • Method and apparatus for transmitting data through polarization antenna
  • Method and apparatus for transmitting data through polarization antenna

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Embodiment Construction

[0041] The embodiments of the present invention combine beamforming and space-time coding technologies to realize multiple groups of polarized antennas to transmit data for target users and obtain diversity gain.

[0042] A group of polarized antennas in the embodiments of the present invention includes at least one antenna with a single polarization direction, and the polarization directions of multiple groups of polarized antennas are different.

[0043] see figure 1 , this embodiment provides a network side device, configured to transmit data to a user through multiple sets of polarized antennas. The network side device may be a base station (Node B or Evolved Node B). It includes a first interface module 101 , a space-time coding module 102 , a beamforming module 103 and a second interface module 104 .

[0044] The first interface module 101 is used to connect with other devices on the network side to obtain data symbols to be sent. If the network side device includes a...

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Abstract

The invention discloses a method for transmitting data by polarized antennas, which is used for realizing data transmission by a plurality of groups of polarized antennas so as to obtain diversity gain. The method comprises the following steps: a network side obtains data symbols to be transmitted; the network side divides the data symbols into at least two paths and carries out space time coding; the network side carries out beam forming respectively to the at least two paths of data symbols and respectively transmits the data symbols by at least two groups of polarized antennas; and a terminal side obtains the at least two paths of data symbols transmitted by the network side, constructs a first system matrix and a second system matrix which are related to the at least two groups of polarized antennas and carries out data detection to the at least two paths of received data symbols, thus obtaining data symbol estimation values of the at least two paths of data symbols. The inventionalso discloses a device and a system used for realizing the method.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for transmitting data through a polarized antenna. Background technique [0002] Dual-polarized antenna is a new type of antenna technology, which combines +45° and -45° two antennas with orthogonal polarization directions, and works in the transceiver duplex mode at the same time, each cell only needs one set of dual-polarized antennas antenna. Dual-polarized antennas allow the system to adopt polarization diversity reception technology. The principle is to use the uncorrelation between ±45° polarization directions. The degree of uncorrelation between the two determines the quality of diversity reception. Since ±45° is orthogonal polarization, it can effectively guarantee diversity reception, and its polarization diversity gain is about 5dB, which is about 2dB higher than the space diversity commonly used by single-polarization antennas. In addition, the space d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08H04B7/10H04L1/06
Inventor 康绍莉蔡月民徐红艳吴柯维郑银香
Owner DATANG MOBILE COMM EQUIP CO LTD
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