Unlock instant, AI-driven research and patent intelligence for your innovation.

An implementation method of beamforming based on common reference in mimo system

A beamforming and realization method technology, applied in the direction of automatic power control, diversity/multi-antenna system, space transmit diversity, etc., can solve the problems of high circuit cost and high hardware circuit complexity

Active Publication Date: 2021-04-20
XIDIAN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the circuit based on the common local oscillator mode has the problems of high hardware circuit complexity and high circuit cost.

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
  • An implementation method of beamforming based on common reference in mimo system
  • An implementation method of beamforming based on common reference in mimo system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as figure 1 As shown, the purpose of the present invention is achieved in this way, including: low frequency reference source 1, amplifier 2, power divider 3, frequency and phase detector PD4, loop filter LPF5, power VCO6, phase shifter PH7, N frequency division 8 and antenna array 9; wherein, the low-frequency reference source 1 is used to provide low-frequency reference signals to the transceiver unit; the low-frequency reference signal is amplified by the amplifier 2 and then divided into multiple paths by the power divider 3, and each path is phase-locked by a path The loop unit enters the transceiver unit through the antenna array 9; the phase-locked loop unit includes a frequency detector PD4, a loop filter LPF5, a power VCO6, an N frequency divider 8, a frequency detector PD4, a loop filter LPF4, The power VCO6 and the N frequency divider 8 are electrically connected in turn to form a loop. The input terminal of the frequency and phase detector PD4 is the i...

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 present invention relates to a beamforming implementation method based on common reference in MIMO system, comprising: low frequency reference source, amplifier, power divider, frequency and phase detector PD, loop filter LPF, power VCO, phase shifter PH, N frequency divider and antenna array; Among them, the low-frequency reference source is used to provide low-frequency reference signals to the transceiver unit; the low-frequency reference signal is amplified by the amplifier and divided into multiple channels by the power divider, and each channel passes through a phase-locked loop unit. Then enter the transceiver unit through the antenna array; the phase-locked loop unit includes frequency detector PD, loop filter LPF, power VCO, N frequency divider, frequency detector PD, loop filter LPF, power VCO, N The frequency divider is electrically connected in turn to form a loop. The input end of the frequency and phase detector PD is the input end of the loop, the output end of the power VCO is the output end of the loop, and the output end of the power VCO is also the input end of the frequency and phase detector PD. Control terminal. The invention has the characteristics of simple hardware circuit and low circuit cost.

Description

technical field [0001] The invention relates to the fields of wireless communication, radar navigation and the like, and in particular to a method for implementing beamforming based on common reference in the MIMO system. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology refers to arranging multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, and realizing multiple transmission and multiple reception through multiple antennas, making full use of space resources and improving signal quality , doubling the channel capacity of the communication system. [0003] The fifth-generation mobile communication system (5G) uses massive multiple-input multiple-output (Massive MIMO) technology. Multiple antenna units are deployed in base station antennas, and multiple antennas are deployed in mobile terminals at the same time, which greatly enhances the spatial multiplexing capability. Achieve breakthro...

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 Patents(China)
IPC IPC(8): H04B7/0413H04B7/06H03L7/18
CPCH03L7/18H04B7/0413H04B7/0617
Inventor 詹劲松王博孙璐胡为胡聪
Owner XIDIAN UNIV