CN111865846A - Channel influence estimation analysis method of interference signal - Google Patents
Channel influence estimation analysis method of interference signal Download PDFInfo
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- CN111865846A CN111865846A CN202010612879.0A CN202010612879A CN111865846A CN 111865846 A CN111865846 A CN 111865846A CN 202010612879 A CN202010612879 A CN 202010612879A CN 111865846 A CN111865846 A CN 111865846A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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Abstract
The invention provides a channel influence estimation and analysis method of an interference signal, wherein the channel influence estimation and analysis method comprises the following steps: an information acquisition step of acquiring an interference signal and outputting the interference signal; an information determination step of determining transmission methods of the output interference signal, the received signal, and the interference signal sequence; the estimation analysis step carries out the channel response estimation of any two sub-carrier frequencies, and the estimation determination step calculates the channel response estimation values of the rest sub-carrier frequencies. The invention can estimate the channel response of the interference signal, and is convenient for clearly predicting the influence of the interference signal on the useful signal.
Description
Technical Field
The present invention relates to the field of channel estimation technologies, and in particular, to a method for estimating and analyzing channel influence of an interference signal.
Background
In a modern society, useful information can be obtained through transmission among signals, and information is transmitted through data transmission among the signals, so that the social life is facilitated, and the development of the society is promoted.
The signal can be divided into a useful signal and an interference signal; the useful signal is a signal for transmitting information required by a user or a signal for enabling the receiving equipment to generate a preset action after receiving the signal; the interference signal is relative to a specific information requirement, and the interference signal can be noise and the like; since the interference signal and the useful signal coexist, the influence of the interference signal on the useful signal is inevitable during information transmission, and therefore, the influence of the interference signal on the useful signal can be known by knowing the channel response estimate of the interference signal.
Therefore, the present invention provides a method for estimating and analyzing the channel influence of an interference signal, so as to calculate the channel response estimation value of the interference signal, and facilitate predicting the influence of the interference signal on a useful signal.
Disclosure of Invention
Objects of the invention
In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present invention provides a method for estimating and analyzing channel influence of an interference signal, which can calculate a channel response estimation value of the interference signal, and facilitate clear understanding of the influence of the interference signal on a useful signal.
(II) technical scheme
The invention discloses a channel influence estimation analysis method of interference signals, which comprises the following steps:
an information acquisition step of acquiring an interference signal and outputting the interference signal;
an information determining step of determining the interference signal output by the information acquiring step, a receiving signal corresponding to the interference signal, and a transmission method of an interference signal sequence;
estimating and analyzing, namely acquiring a partial sequence of the interference signal of the sub-carrier frequency through a plurality of sub-carrier frequency sets formed by sub-carrier frequencies in the carrier frequency of the interference signal; estimating the channel response of any two sub-carrier frequencies in the sub-carrier frequency set by the method of the channel response estimation value of the sub-carrier frequencies, the partial sequence of the interference signal and the receiving signal;
And an estimation determining step of estimating the channel response of the sub-carrier frequency between any two sub-carrier frequencies by using the channel response estimation values of any two sub-carrier frequencies when the transmitting method is a cyclic method and/or an extraction method.
In one possible embodiment, the information acquisition step generates the interference signal by constructing an interference signal acquisition device.
In a possible implementation manner, the information obtaining step converts the single interference signal into multiple interference signals.
In a possible implementation manner, in the information obtaining step, the interference signal is output through a signal output device.
In a possible implementation, in the estimation analysis step:
selecting different sub-carrier frequency sets respectively comprising a preset number of continuous sub-carrier frequencies from the sub-carrier frequencies contained in the carrier frequency carrying the interference signal;
determining a partial sequence of the interference signal respectively carried by each sub-carrier frequency in the selected sub-carrier frequency set;
and determining channel response estimation values of any two sub-carrier frequencies according to the received signal and the determined partial sequence of the interference signal in a mode of respectively determining the channel response estimation value of one sub-carrier frequency contained in each selected sub-carrier frequency set.
In one possible implementation, in the estimation determining step, the channel response estimation of the sub-carrier frequency between any two sub-carrier frequencies may be performed by using a linear interpolation method in combination with the transmission method of the interference signal.
(III) advantageous effects
The invention provides a method for estimating and analyzing the channel influence of an interference signal, which is characterized in that the interference signal is obtained through an information obtaining step, the sending methods of the output interference signal, a received signal and an interference signal sequence are determined through an information determining step, so that the estimation and analysis step can calculate the channel response estimation values of any two sub-carrier frequencies in the carrier frequencies of the interference signal, and the estimation and determination step calculates the channel response estimation values of the rest sub-carrier frequencies in the carrier frequencies of the interference signal, thereby realizing the calculation of the channel response estimation value of the interference signal of the whole channel through the channel response estimation of the sub-carrier frequencies, and being convenient for clearly predicting the influence of the interference signal on a useful signal.
Drawings
The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining and illustrating the present invention and should not be construed as limiting the scope of the present invention.
Fig. 1 is a flowchart of a method for estimating and analyzing channel influence of an interference signal according to the present invention.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that: in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are some embodiments of the present invention, not all embodiments, and features in embodiments and embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A first embodiment of a method for estimating and analyzing channel influence of an interference signal according to the present invention is described in detail with reference to fig. 1. As shown in fig. 1, the channel influence estimation analysis method provided in this embodiment mainly includes: the method comprises an information acquisition step, an information determination step, an estimation analysis step and an estimation determination step.
An information acquisition step of acquiring an interference signal and outputting the interference signal; in the information acquisition step, the interference signal is collected so as to carry out the channel response estimation of the interference signal subsequently. The interference signal may refer to a signal causing damage to reception of a useful signal; the interfering signal may be noise or the like.
In the information acquisition step, the acquired interference signal is output, so that the interference signal is input into a channel, and further, the channel influence estimation and analysis of the interference signal can be performed.
An information determining step of determining the interference signal output by the information acquiring step, a receiving signal corresponding to the interference signal, and a transmission method of an interference signal sequence; the received signal corresponding to the interference signal may be a received signal obtained after the interference signal is transmitted through a channel. The interference signal and the sending method thereof and the receiving signal after the transmission of the interference signal are obtained through the information determining step, so that the channel response of the interference signal is estimated conveniently.
Estimating and analyzing, namely acquiring a partial sequence of the interference signal of the sub-carrier frequency through a plurality of sub-carrier frequency sets formed by sub-carrier frequencies in the carrier frequency of the interference signal; estimating the channel response of any two sub-carrier frequencies in the sub-carrier frequency set by the method of the channel response estimation value of the sub-carrier frequencies, the partial sequence of the interference signal and the receiving signal; any two sub-carrier frequencies can be non-adjacent sub-carrier frequencies.
And an estimation determining step of estimating the channel response of the sub-carrier frequency between any two sub-carrier frequencies by using the channel response estimation values of any two sub-carrier frequencies when the transmitting method is a cyclic method and/or an extraction method. The channel response estimation values of the two sub-carrier frequencies calculated by the estimation analysis step are combined with the sending method of the interference signal, and the channel response estimation of the sub-carrier frequency between the two sub-carrier frequencies can be carried out by using a linear interpolation method. The description of the linear interpolation method can be realized by a Cyclic (Cyclic) method and an extraction (subtraction) method.
Wherein the information acquisition step generates the interference signal by constructing an interference signal acquisition device. Various interference signal parameters can be set through equipment or devices for setting the interference signal parameters, and therefore the interference signals can be generated in the interference signal acquisition device according to the interference signal parameters.
And the information acquisition step is used for converting the single-channel interference signal into the multi-channel interference signal. The multi-channel signal generating circuit can convert a single-channel interference signal into a multi-channel interference signal, and then adjust the multi-channel interference signal through the power adjusting circuit and output a plurality of channels of digital intermediate frequency interference signals.
In the information acquisition step, the interference signal is output through a signal output device. The signal output equipment can also convert the multi-channel digital intermediate frequency interference signals into multi-channel analog intermediate frequency interference signals in a digital-to-analog conversion mode; and converting the multi-channel analog intermediate frequency interference signals into multi-channel radio frequency analog interference signals, and further outputting the multi-channel radio frequency analog interference signals (namely outputting the interference signals).
Wherein, in the estimation analysis step:
selecting different sub-carrier frequency sets respectively comprising a preset number of continuous sub-carrier frequencies from the sub-carrier frequencies contained in the carrier frequency carrying the interference signal; if the transmission method is an extraction method and there are 1 sub-carrier frequencies in the set of sub-carrier frequencies, the predetermined number may be 1. If the transmission method is a round robin method, the predetermined number may be 4, 16, etc.;
determining a partial sequence of the interference signal respectively carried by each sub-carrier frequency in the selected sub-carrier frequency set;
and determining channel response estimation values of any two sub-carrier frequencies according to the received signal and the determined partial sequence of the interference signal in a mode of respectively determining the channel response estimation value of one sub-carrier frequency contained in each selected sub-carrier frequency set.
The method comprises the steps of outputting the interference signal through an information acquisition step, determining the sending methods of the output interference signal, the received signal and the interference signal sequence through an information determination step, further enabling an estimation analysis step to calculate channel response estimation values of any two sub-carrier frequencies in carrier frequencies of the interference signal, and calculating channel response estimation values of the rest sub-carrier frequencies in the carrier frequencies of the interference signal through an estimation determination step, so that channel response estimation of the interference signal of the whole channel is realized through channel response estimation of the sub-carrier frequencies. The method for estimating and analyzing the channel influence of the interference signal can estimate the channel response of the interference signal, and is convenient for clearly predicting the influence of the interference signal on a useful signal.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A method for estimating and analyzing channel influence of interference signals, comprising the steps of:
an information acquisition step of acquiring an interference signal and outputting the interference signal; (information acquisition step of outputting the acquired interference signal so that the interference signal is input to the channel, thereby enabling estimation and analysis of the channel influence of the interference signal)
An information determining step of determining the interference signal output by the information acquiring step, a receiving signal corresponding to the interference signal, and a transmission method of an interference signal sequence;
estimating and analyzing, namely acquiring a partial sequence of the interference signal of the sub-carrier frequency through a plurality of sub-carrier frequency sets formed by sub-carrier frequencies in the carrier frequency of the interference signal; estimating the channel response of any two sub-carrier frequencies in the sub-carrier frequency set by the method of the channel response estimation value of the sub-carrier frequencies, the partial sequence of the interference signal and the receiving signal;
and an estimation determining step of estimating the channel response of the sub-carrier frequency between any two sub-carrier frequencies by using the channel response estimation values of any two sub-carrier frequencies when the transmitting method is a cyclic method and/or an extraction method.
2. The channel-impact estimation analysis method of claim 1, wherein the information acquisition step generates the interference signal by constructing an interference signal acquisition device.
3. The channel estimation analysis method according to claim 2, wherein the information obtaining step converts the single interference signal into multiple interference signals.
4. The channel-impact estimation and analysis method of claim 1, wherein in the information obtaining step, the interference signal is output through a signal output device.
5. The channel-impact estimation analysis method of claim 1, wherein in the estimation analysis step:
selecting different sub-carrier frequency sets respectively comprising a preset number of continuous sub-carrier frequencies from the sub-carrier frequencies contained in the carrier frequency carrying the interference signal;
determining a partial sequence of the interference signal respectively carried by each sub-carrier frequency in the selected sub-carrier frequency set;
and determining channel response estimation values of any two sub-carrier frequencies according to the received signal and the determined partial sequence of the interference signal in a mode of respectively determining the channel response estimation value of one sub-carrier frequency contained in each selected sub-carrier frequency set.
6. The channel estimation analysis method according to claim 5, wherein the estimation determination step performs channel response estimation of sub-carrier frequencies between any two sub-carrier frequencies by using a linear interpolation method in combination with the transmission method of the interference signal.
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Application publication date: 20201030 |