Electronic equipment and communication method

A technology of electronic equipment and user equipment, applied in wireless communication, electrical components, radio transmission systems, etc., can solve the problems of poor applicability, high cost, high complexity of joint optimization of digital precoding and analog precoding, and achieve low complexity Effect

Inactive Publication Date: 2019-03-19
SONY CORP
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of line-of-sight channels, the channel coefficients do not obey the complex Gaussian distribution, and there is a strong correlation between different channels, so the asymptotic orthogonality of large-scale multi-antenna systems is applicable in millimeter-wave frequency band communications poor
Although in communication systems such as millimeter waves, a hybrid precoding architecture can be used to reduce hardware implementation complexity and power consumption, the joint optimization complexity of digital precoding and analog precoding in the hybrid precoding architecture is still very high. lead to high overhead in practical applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electronic equipment and communication method
  • Electronic equipment and communication method
  • Electronic equipment and communication method

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0139] In Example 1 of Section 4-2, N is obtained by the traditional exhaustive search method opt The complexity of is O(M). It can be seen that as the number M of antenna elements increases, the complexity is very high, which imposes a very large burden on the processing circuit 303 or the activation number acquisition unit 305 and may lead to an unreasonable extension of the calculation time. It is beneficial to improve the efficiency of the communication system.

[0140] In this case, if the result requirements are not particularly strict, you can directly use the number N of activated antenna elements that make B(N, φ) less than the set threshold η found in the first search sub-opt , to be used for downlink beamforming, instead of selecting the N that minimizes B(N,φ) from the final set obtained through multiple searches sub-opt . This is a way to reduce complexity, but it may not be possible to obtain N that minimizes B(N,φ) sub-opt .

[0141] In order to reduce the c...

example 3

[0147] In the foregoing determination example 1 and determination example 2, the number of activated antenna elements is calculated in real time. Although we have obtained a method to reduce the complexity through simulation, it still generates real-time computing resource and time overhead.

[0148] In Example 3, a method of avoiding real-time computing resource and time overhead through pre-static configuration is proposed.

[0149] Specifically, the beamforming codebook such as the DFT codebook is fixed, and the pointing direction (beam direction) of each transmit beam generated by the base station is relatively fixed, so the base station 101 and the user equipment 102-104 can know The beam direction of each transmit beam.

[0150] Since the beam direction representing the direction of the downlink transmission signal can be known in advance, the calculation algorithm in Determination Example 1 and Determination Example 2 can be directly used to calculate the correspondenc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides electronic equipment and a communication method. The electronic equipment comprises a processing circuit; the processing circuit is configured to determine that signal transmission is carried out on at least two user equipments simultaneously and the proximity degree of the directions of downlink transmission signals used for the at least two user equipment meets a preset condition; and acquire the number of activated antenna array elements for downlink beamforming determined based on the directions of the downlink transmission signals for the at least two user equipments.

Description

technical field [0001] The present disclosure generally relates to an electronic device and a communication method, and in particular, an electronic device and a communication method for a millimeter-wave large-scale multi-antenna system. Background technique [0002] As one of the key technologies of next-generation wireless communication (5G), Massive multiple-input multiple-output (Massive MIMO) technology has attracted extensive attention. As the number of antennas in a large-scale multi-antenna system increases, each channel coefficient tends to be orthogonal, and this property is called asymptotic orthogonality (asymptoticorthogonality) hereinafter. Benefiting from the asymptotic orthogonality introduced by the large-scale multi-antenna system, the system spectral efficiency and energy efficiency can be effectively improved through low-complexity linear signal processing algorithms. In such a system, conjugate-transpose beamforming can be used to effectively eliminate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04W16/28
CPCH04B7/0413H04B7/0617H04W16/28H04B7/0452H04B7/0608H04B7/0417
Inventor 刘文东王昭诚曹建飞
Owner SONY CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap