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A Dynamic Subarray Design Method Based on Millimeter Wave MIMO System

A design method and dynamic sub-technology, applied in transmission systems, radio transmission systems, transmission monitoring, etc., can solve problems such as uneven distribution of antennas

Active Publication Date: 2020-09-01
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: 1) the search range of each sub-array matching group is the entire antenna array; 2) the sub-array antennas are not evenly distributed

Method used

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  • A Dynamic Subarray Design Method Based on Millimeter Wave MIMO System
  • A Dynamic Subarray Design Method Based on Millimeter Wave MIMO System
  • A Dynamic Subarray Design Method Based on Millimeter Wave MIMO System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Assuming that the sender knows complete channel state information, consider a single-user millimeter-wave MIMO system, the number of antennas at the sender is N TX =16, the number of antennas at the receiving end N RX =8, the number of radio frequency links between the sending end and the receiving end There are a total of 8 clusters in the channel, and each cluster has 10 transmission paths, that is, there are a total of N cl N ray =80 transmission paths. Assume the path gain α for each cluster of the channel il Obey variance is Gaussian distribution. And assume that the azimuth angle of arrival angle and departure angle is uniformly distributed in [0,2π], and the elevation angle is in Inner uniform distribution, set the noise variance σ 2 = 1, N s = 2, and normalize the transmitter power at the same time. In step S1, the 16 antennas at the transmitting end are divided into upper and lower halves according to the antenna index values, and each half area i...

Embodiment 2

[0052] Assuming that the sender knows complete channel state information, consider a single-user millimeter-wave MIMO system, the number of antennas at the sender is N TX =64, the number of antennas at the receiving end N RX =8, the number of radio frequency links between the sending end and the receiving end There are a total of 8 clusters in the channel, and each cluster has 10 transmission paths, that is, there are a total of N cl N ray =80 transmission paths. Assume the path gain α for each cluster of the channel il Obey variance is Gaussian distribution. And assume that the azimuth angle of arrival angle and departure angle is uniformly distributed in [0,2π], and the elevation angle is in Inner uniform distribution, set the noise variance σ 2 = 1, N s = 2, and normalize the transmitter power at the same time. In step S1, the 64 antennas at the transmitting end are divided into upper and lower halves according to the antenna index values, each of which consis...

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Abstract

The invention discloses a dynamic sub-array design method based on a millimeter wave MIMO system. The method comprises the following steps: S1, dividing a transmitting end antenna into an upper half region and a lower half region according to an antenna index value; S2, solving all permutation and combination of the sub-regions, and dividing the sub-regions into two groups consisting of four antennas with continuous index values; S3, carrying out SVD decomposition on the covariance matrix of the subarea group, solving the sum of the singular values of the subarea group, repeating the operationuntil the sum of the maximum singular values is obtained, and adjusting the position of the antenna according to the index value combination corresponding to the sum of the maximum singular values; S4, repeating the operations of the steps S2 and S3 in all the sub-regions, and grouping according to the partial connection sub-array architecture after the operations are completed; and S5, finally,performing pre-coding performance simulation verification. Compared with the prior art, the dynamic sub-array method provided by the invention has the advantage that the superiority of the performanceis proved through simulation on the basis of partial connection of the sub-arrays.

Description

technical field [0001] The invention belongs to the technical field of millimeter wave communication technology and large-scale antenna array, and relates to a dynamic subarray design method for improving system transmission efficiency, in particular to a method for dynamically assigning partly connected subarrays in a millimeter wave large-scale MIMO system. Background technique [0002] As the number of smart mobile terminals continues to grow, the current cellular network cannot meet the large-capacity and high-performance requirements of the next-generation communication system due to the lack of spectrum resources. The combination of millimeter wave and massive MIMO system effectively solves the problem of insufficient spectrum resources, and plays a key role in meeting the strict performance requirements of 5G networks. At the same time, thanks to the shorter wavelength of the millimeter wave, it is possible to package a large number of antenna elements in a certain si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456H04B17/391
CPCH04B7/0413H04B7/0456H04B17/3912
Inventor 王璀潘鹏张帅胡松王国栋
Owner HANGZHOU DIANZI UNIV