Polarization interference blind estimation and suppression method
A technology of blind estimation and horizontal polarization, which is applied in the field of communication and can solve problems such as crosstalk
Active Publication Date: 2022-06-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a method for blind estimation and suppression of polarization interference, and solve the crosstalk problem existing in the received data of antennas with different polarizations
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application provided in conjunction with the accompanying drawings is not intended to limit the scope of protection of the present application as claimed, but merely represents selected embodiments of the present application. Based on the em...
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
Login to View More Abstract
The invention relates to a polarization interference blind estimation and suppression method, which comprises the following steps of: S1, acquiring intermediate frequency digital signal data, and performing delay alignment on the acquired signals; s2, moving the intermediate frequency real signals of the two channels to a baseband to obtain a baseband complex signal; s3, adjusting a sampling rate through a Farrow filter, and adjusting the sampling rate to an integral multiple of a symbol data rate; s4, inputting the adjusted signals into an RRC filter to eliminate inter-symbol crosstalk, and then aligning the signals; and S5, blind extraction of a first reference signal is carried out, rough correction is carried out on the first reference signal through an LS algorithm to obtain a second reference signal, and then accurate correction is carried out. According to the method, the parameters of the interference offset model are estimated in an adaptive filtering iteration mode, the interference problem caused by different polarized antenna receiving modes of the electronic warfare jammer in the specific battlefield area can be solved through the offset model, and normal communication of the electronic warfare jammer in different battlefield environments is guaranteed.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for blind estimation and suppression of polarization interference. Background technique [0002] In radar, communication, electronic countermeasures, aerospace and remote control telemetry and other systems, the antennas are mostly in the form of multi-polarized MIMO antennas. In this way, diversity gain and multiplexing gain are used to improve channel capacity, reduce multipath fading, and improve However, when multi-polarized MIMO antennas are used to receive, there is crosstalk between the multi-paths of different polarized antennas. Crosstalk is an important cause of interference in the receiving paths of polarized antennas. Polarized interference It will reduce the signal-to-noise ratio of the receiving end, deteriorate the communication quality, and greatly reduce the advantages of the multi-polarized MIMO antenna in terms of high communication qu...
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
Login to View More IPC IPC(8): H04B7/0413H04B1/10H04L25/02H04L25/03H04L27/00
CPCH04B7/0413H04B1/10H04B1/1027H04L25/03012H04L25/0224H04L25/03089H04L27/0014H04L2027/0026Y02D30/70
Inventor 张梦瑶刘颖邵士海马万治潘文生赵宏志徐强唐友喜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA