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Method and device for estimating spatial correlation

A spatial correlation and spatial correlation technology, applied in transmission monitoring, radio transmission systems, electrical components, etc., can solve problems such as reducing the complexity of the spatial correlation estimation process and reducing the amount of calculation.

Active Publication Date: 2017-06-13
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0005] The problem solved by the present invention is how to reduce the complexity of the spatial correlation estimation process and reduce the amount of computation

Method used

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  • Method and device for estimating spatial correlation
  • Method and device for estimating spatial correlation
  • Method and device for estimating spatial correlation

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Embodiment Construction

[0094] figure 1 It shows a schematic structural diagram of a multi-antenna wireless communication system using multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) technology, and the system may include: a transmitting end 11, a receiving end 14, and M of transmitter 11 T A transmitting antenna 12, M arranged on the receiving end 14 R a receiving antenna 13, a channel estimation unit 15, a spatial correlation estimation unit 16, a measurement unit 17 and a demodulator 18, wherein:

[0095] The transmitting end 11 passes through the M provided at the transmitting end 11 T A transmitting antenna 12 transmits a signal, and the receiving end 14 passes through the M arranged at the receiving end 14 R receiving antennas 13 to receive the signal, and the channel estimation unit 15 performs the M T transmit antenna 12 with the M R The channel estimation operation is performed on the transmission channel between the receiving antennas 13 to obtain a channel estima...

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Abstract

The invention discloses a method and device for estimating spatial correlation. The method comprises the following steps: obtaining the element value at the (0,0)th location and the element value at the (1,1)th location of the correlation matrix estimation value of a channel transmitting terminal according to the modular square of a first column matrix and a second column matrix; obtaining the element value at the (0,1)th location of the correlation matrix estimation value of the channel transmitting terminal according to the real part value and the imaginary part value of a first scalar matrix; calculating the correlation coefficient of the channel transmitting terminal according to the element value at the (0,0)th location, the element value at the (1,1)th location and the element value at the (0,1)th location of the correlation matrix estimation value; and comparing the calculated correlation coefficient of the channel transmitting terminal with the preset correlation coefficient threshold to determine the correlation degree of the wireless channel of the channel transmitting terminal. By adopting the scheme disclosed by the invention, the complexity degree of the spatial correlation estimation process can be reduced, and the amount of computation can be reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for estimating spatial correlation. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology uses multiple transmitting antennas at the transmitting end of the communication system and multiple receiving antennas at the receiving end, so that signals can be transmitted through multiple antennas at the transmitting end and the receiving end. and reception, thereby improving communication quality. The use of MIMO technology can double the channel capacity of the communication system without increasing spectrum resources and antenna transmission power, so MIMO technology shows obvious advantages. Spatial correlation is a key feature of the channel in MIMO technology, which can be used to predict the capacity of the channel. [0003] At present, the spatial correlation estimation process includes: performing a correlation operation on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/309H04B7/0413
CPCH04B7/0413
Inventor 杨宜进李俊强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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