CN117294362A - Interference elimination method, device, equipment and medium in UHF frequency band - Google Patents
Interference elimination method, device, equipment and medium in UHF frequency band Download PDFInfo
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Abstract
The invention relates to the field of noise reduction of voice equipment, and discloses an interference elimination method, device, equipment and medium in a UHF frequency band. According to the method, frequency band combinations existing at a plurality of transmitting ends and combinations which possibly generate multi-order interference under each frequency band combination are listed under a UHF frequency band, frequency points under each interference combination are exhausted, the number of the frequency points is counted, the interference combinations which are the same as or different from a preset difference threshold value are obtained and are required to be assigned, the interference combinations with frequency interference are screened and removed through detecting assignment results of the interference combinations, interference occurring under different orders is eliminated, and a better anti-interference effect is achieved.
Description
Technical Field
The present invention relates to the field of audio processing, and in particular, to a method, an apparatus, a device, and a medium for interference cancellation in a UHF band.
Background
Transmitter intermodulation interference is a particular interference generated by a base station using a plurality of different frequency transmitters (frequency division multiple access (FDMA) systems). Because multiple transmitters are co-located, whether they use separate antennas or a common antenna, their signals may be carried into the transmitters by electromagnetic coupling or other means, thereby creating intermodulation interference. Since the final power amplifier of a transmitter typically operates in a nonlinear state, such intermodulation interference typically occurs in the final amplifier.
Due to the nonlinear effect of the transmission system, nonlinear frequency components are generated between the fundamental frequency signals, and if the components are strong for the fundamental frequency of the transmitted signals, intermodulation interference is generated in the receiving frequency band.
Intermodulation interference and intermodulation interference can occur when 4 microphone transmitters are simultaneously connected to 1 receiver. The closest method in the prior art can not completely pick out and filter the interference frequency, and has the problem of uncleanness.
Disclosure of Invention
The invention mainly aims to solve the technical problems that all frequencies are compared in a traversal mode, so that an interference frequency band can be completely covered, interference frequencies are eliminated, and a better anti-interference effect is obtained.
The first aspect of the present invention provides an interference cancellation method in a UHF band, which is applied to a plurality of transmitting ends and one receiving end, the method comprising:
according to the UHF frequency band, calculating a plurality of frequency band combinations existing at a plurality of transmitting ends;
listing a plurality of combinations of possible multi-order interference generated by the transmitting ends under each frequency band combination to obtain a plurality of interference combinations, and exhausting frequency points under each interference combination;
respectively calculating the number of frequency points with the same frequency as the transmitting end under each interference combination, and then calculating the total number of frequency points with the number of frequency points;
comparing the total number of the frequency points of the interference combination with a preset difference threshold value to obtain a difference result, and performing assignment processing on the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination;
and screening and eliminating all the interference combinations based on all the assignment results.
Optionally, in a second implementation manner of the first aspect of the present invention, the method for eliminating interference in the UHF band is applied to four transmitting ends and one receiving end, and calculating, according to the UHF band, a plurality of frequency band combinations existing in the plurality of transmitting ends includes:
according to 48 frequency bands in the UHF frequency band, calculating frequency band combinations of the 48 frequency bands respectively selected by four transmitting ends to obtain 48 4 And (5) frequency band combination.
Optionally, in a third implementation manner of the first aspect of the present invention, the multi-order interference includes third-order interference, fourth-order interference, and super-fourth-order interference.
Optionally, in a fourth implementation manner of the first aspect of the present invention, the method is applied to four transmitting ends and one receiving end, and the method lists combinations of multiple possible multi-order interference generated by multiple transmitting ends under each frequency band combination, obtains multiple interference combinations, and exhausts frequency points under each interference combination includes:
calculating combinations of multiple frequency band combinations under third-order interference and fourth-order interference to obtain multiple third-order combinations and multiple fourth-order combinations respectively;
constructing each third-order combination and each fourth-order combination into an interference combination;
the frequency bins under each of the third order combinations and each of the fourth order combinations are respectively exhausted.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the difference threshold includes a third-order difference threshold and a fourth-order difference threshold, where the third-order difference threshold is 36, and the fourth-order difference threshold is 108.
Optionally, in a sixth implementation manner of the first aspect of the present invention, comparing the total number of the frequency points of the interference combination with a preset difference threshold to obtain a difference result, and performing assignment processing on the interference combination according to the difference result to obtain a assignment result corresponding to the interference combination includes:
judging whether the number of the same frequency points of each third-order combination and the four transmitting ends is the same as the third-order difference threshold value;
if the three orders are the same, the corresponding three-order combination is assigned to obtain a three-order assignment, wherein the three-order assignment is O;
if the three values are different, the corresponding three-order combination is assigned to obtain a three-order assignment, wherein the three-order assignment is a non-zero value;
judging whether the number of the same frequency points of each fourth-order combination and the four transmitting ends is the same as the fourth-order difference threshold value;
if the four orders are the same, assigning the corresponding fourth order combination to obtain a fourth order assignment, wherein the fourth order assignment is 0;
and if the four values are different, assigning the corresponding fourth-order combination to obtain fourth-order assignment, wherein the fourth-order assignment is a non-zero value.
Optionally, in a seventh implementation manner of the first aspect of the present invention, the filtering and rejecting all the interference combinations based on all the assignment results includes:
summing the third-order assignment and the fourth-order assignment under the same interference combination to obtain a total assignment;
judging whether the total assignment is a non-zero value or not;
if yes, rejecting the interference combination.
The second aspect of the present invention provides an interference cancellation device in a UHF band, applied to four transmitting ends and one receiving end, where the interference cancellation device in the UHF band includes:
the frequency band listing module is used for calculating a plurality of frequency band combinations existing at a plurality of transmitting ends according to the UHF frequency band;
the exhaustion module is used for performing multi-order interference elimination on a plurality of frequency band combinations, listing the combinations of the multi-order interference possibly generated by a plurality of transmitting ends under each frequency band combination, obtaining a plurality of interference combinations, and exhausting frequency points under each interference combination;
the frequency point determining module is used for respectively calculating the total number of frequency points with the same frequency as the transmitting end under each interference combination;
the assignment module is used for comparing the total number of the frequency points of the interference combination with a preset difference threshold value to obtain a difference result, and carrying out assignment processing on the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination;
and the screening and eliminating module is used for carrying out screening and eliminating processing on all the interference combinations based on all the assignment results.
A third aspect of the present invention provides an interference cancellation device in a UHF band, the interference cancellation device in the UHF band including: a memory and at least one processor, the memory having instructions stored therein, the memory and the at least one processor being interconnected by a line;
the at least one processor invokes the instructions in the memory to cause the device to perform the interference cancellation method in the UHF band described above.
A fourth aspect of the present invention provides a computer-readable storage medium of a speech device, having instructions stored therein, which when run on a computer, cause the computer to perform the above-described interference cancellation method in the UHF band.
According to the technical scheme provided by the invention, through listing the frequency band combinations existing at a plurality of transmitting ends and the combinations which can generate multi-order interference under each frequency band combination, the frequency points under each interference combination are exhausted, the number of the frequency points is counted, the interference combinations which are the same as or different from the preset difference threshold value are obtained, the assignment is needed to be carried out on the interference combinations, the interference combinations with frequency interference are screened and removed through detecting the assignment results of the interference combinations, and the interference appearing under different orders is eliminated, so that a better anti-interference effect is obtained.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of an interference cancellation method in a UHF band according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second embodiment of an interference cancellation method in a UHF band according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third embodiment of an interference cancellation method in a UHF band according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a fourth embodiment of an interference cancellation method in a UHF band according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a fourth embodiment of an interference cancellation method in a UHF band according to the present invention;
fig. 6 is a schematic diagram of an embodiment of an interference cancellation device in the UHF band according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an embodiment of an interference cancellation device in the UHF band according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an interference elimination method, an interference elimination system, an interference elimination device, an interference elimination equipment and a storage medium in a UHF frequency band.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For easy understanding, a specific flow of an embodiment of the present invention is described below, referring to fig. 1 to fig. 5, and in an embodiment of the present invention, an interference cancellation method in a UHF band includes:
101. according to the UHF frequency band, calculating a plurality of frequency band combinations existing at a plurality of transmitting ends;
in this embodiment, the method uses four transmitting terminals and one receiving terminal, and is implementedOne step, according to 48 frequency bands in UHF frequency band, calculating frequency band combinations of 48 frequency bands selected by four transmitting ends respectively to obtain 48 4 Combining seed frequency bands;
wherein A, B, C and D respectively refer to four transmitting ends, of course, the number of frequency band combinations at five transmitting ends, six transmitting ends or more is 48 5 、48 6 ...48 n 。
102. Listing a plurality of transmitting ends under each frequency band combination possibly generating multi-order interference combinations to obtain a plurality of interference combinations, and exhausting frequency points under each interference combination;
in the present embodiment, the multi-order interference includes interference of three or more orders, while the multi-order interference in the embodiment of the present invention includes three-order interference, four-order interference, and super-four-order interference, thus being 48 4 The elimination of third-order interference and fourth-order interference under the combination of the frequency bands needs to determine how many corresponding transmitting frequencies of the four transmitting ends are, and the transmitting ends adopted in the embodiment are microphones respectively: x is X A ＝514.56，X B ＝549.82，X C ＝557.33，X D Note that, 585.21, the frequency points are variables, which are different according to the country and the product, and the corresponding frequencies are also different, and the above-mentioned four transmitting ends are shown as frequency points of the microphones used in the present method, which do not represent that the microphones different from the frequency points are not suitable for the present method.
Further, step 102 may be specifically performed:
1021. and calculating the combination of the multiple frequency band combinations under the third-order interference and the fourth-order interference to respectively obtain multiple third-order combinations and multiple fourth-order combinations.
1022. Each third order combination and each fourth order combination is constructed as an interference combination.
1023. The frequency bins for each third order combination and each fourth order combination are respectively exhausted.
In steps 1021-1023, the multiple third order combinations are actually cases where four microphones appear under third order interference, specificallyABC, ABD, ACD, BCD, respectively, which are in turn 48 4 The combination of the seed frequency bands is free, so that more third-order combinations are obtained, and similarly, the fourth-order combination is +.>That is, ABCD, but in the third-order combination, it is necessary to calculate the frequency intervals between the three microphones, and the combination of calculating ABD, specifically d1=x, is taken as an example B -X A ，d2＝X D -X A ，d3＝X D -X B In calculating the frequencies of d1, d2 and d3 at the transmitting end A to obtain the preselected interference frequency groups A, X1, X2, X3, X4, X5 and X6,
X1＝X-d1；X2＝X-d2；X3＝X-d3；
X4＝X+d1；X5＝X+d2；X6＝X+d3；
and then respectively calculating frequency points with distances of X1, X2, X3, X4, X5 and X6 being d1, d2 and d 3:
X1_1＝X1-d1；X1_2＝X1-d2；X1_3＝X1-d3；
X1_4＝X1+d1；X1_5＝X1+d2；X1_6＝X1+d3；
X2_1＝X2-d1；X2_2＝X2-d2；X2_3＝X2-d3；
X2_4＝X2+d1；X2_5＝X2+d2；X2_6＝X2+d3；
…
X6_1＝X6-d1；X6_2＝X6-d2；X6_3＝X6-d3；
X6_4＝X6+d1；X6_5＝X6+d2；X6_6＝X6+d3；
similarly, when the frequencies of d1, d2 and d3 of the transmitting end B and the transmitting end C are calculated to obtain the pre-selected interference frequency group B and the pre-selected interference frequency group C, all the cases are respectively listed in order of magnitude in the same manner as described above, which is specifically as follows:
preselect interference frequency group 1:
{X1，X2，X3，X4，X5，X6，X1_1，X1_2…X6_6}
preselect interference frequency group 2:
{X1’，X2’，X3’，X4’，X5’，X6’，X1_1’，X1_2’…X6_6’}
preselect interference frequency group 3:
{X1”，X2”，X3”，X4”，X5”，X6”，X1_1”，X1_2”…X6_6”}
in the fourth-order combination, the direct influence distances between the four microphones need to be calculated, and because there is only one case, the ABCD combination is taken as an example, specifically:
d1＝X B -X A ，d2＝X C -X A ，d3＝X D -X A ，d4＝X C -X B ，d5＝X D -X B ，d6＝X D -X C ；
the set of preselected interference frequencies A, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11 and X12 are calculated by calculating the frequencies at the transmitting end A at frequencies d1, d2, d3, d4, d5 and d6,
X1＝X-d1；X2＝X-d2；X3＝X-d3；X4＝X-d4；
X5＝X-d5；X6＝X-d6；X7＝X+d1；X8＝X+d2；
X9＝X+d3；X10＝X+d4；X11＝X+d5；X12＝X+d6；
calculating frequency points with distances d1, d2, d3, d4, d5 and d6 from X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11 and X12:
X1_1＝X1-d1；X1_2＝X1-d2；X1_3＝X1-d3；X1_4＝X1-d4；
X1_5＝X1-d5；X1_6＝X1-d6；X1_7＝X1+d1；X1_8＝X1+d2；
X1_9＝X1+d3；X1_10＝X1+d4；X1_11＝X1+d5；X1_12＝X1+d6；
…
X12_1＝X12-d1；X12_2＝X12-d2；X12_3＝X12-d3；X12_4＝X12-d4；
X12_5＝X12-d5；X12_6＝X12-d6；X12_7＝X12+d1；X12_8＝X12+d2；
X12_9＝X12+d3；X12_10＝X12+d4；X12_11＝X12+d5；X12_12＝X12+d6
similarly, when the frequencies of D1, D2, D3, D4, D5 and D6 of the transmitting end B, the transmitting end C and the transmitting end D are calculated to obtain the pre-selected interference frequency group B, the pre-selected interference frequency group C and the pre-selected interference frequency group D, all the cases are respectively listed in order of magnitude in the same manner as described above, specifically as follows:
preselect interference frequency group 1:
{X1，X2，X3，X4，X5，X6，X7，X8，X9，X10，X11，X12，X1_1，X1_2…X12_12}
preselect interference frequency group 2:
{X1’，X2’，X3’，X4’，X5’，X6’，X7’，X8’，X9’，X10’，X11’，X12’，X1_1’，X1_2’…12_12’}
preselect interference frequency group 3:
{X1”，X2”，X3”，X4”，X5”，X6”，X7”，X8”，X9”，X10”，X11”，X12”，X1_1”，X1_2”…X12_12”}
preselect interference frequency group 4:
{X1”’，X2”’，X3”’，X4”’，X5”’，X6”’，X7”’，X8”’，X9”’，X10”’，X11”’，X12”’，X1_1”’，X1_2”’…X12_12”’}。
all frequency bins of the third order combination and the fourth order combination under one interference combination are listed.
103. Respectively calculating the number of frequency points with the same frequency as the transmitting end under each interference combination, and then calculating the total number of frequency points of the number of frequency points;
in this embodiment, the frequency points in the third-order combination and the fourth-order combination under the interference combination are compared with the frequencies of the four transmitting ends by an algorithm, and the number of the frequency points is fed back.
104. Comparing the total number of the frequency points of the interference combination with a preset difference threshold value to obtain a difference result, and carrying out assignment processing on the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination;
in this embodiment, the difference threshold includes a third-order difference threshold and a fourth-order difference threshold, the third-order difference threshold is 36, the fourth-order difference threshold is 108, the total number of frequency points of the third-order combination needs to be compared with the third-order difference threshold, the compared result is recorded in the third-order combination in a value assignment form, the same applies to the fourth-order combination, and the corresponding result is assigned to the third-order combination.
Further, step 104 may further specifically perform:
1041. judging whether the number of the same frequency points and the four transmitting ends under each third-order combination is the same as the third-order difference threshold value;
1042. if the three values are the same, the corresponding three-order combination is assigned to obtain a three-order assignment, and the three-order assignment is 0;
1043. if the values are different, corresponding third-order combination values are assigned to obtain third-order values, and the third-order values are non-zero values;
1044. judging whether the number of the same frequency points under each fourth-order combination and the four transmitting ends is the same as the fourth-order difference threshold value;
1045. if the four orders are the same, the corresponding fourth order combination is assigned to obtain a fourth order assignment, and the fourth order assignment is 0;
1046. and if the values are different, assigning the corresponding fourth-order combination to obtain a fourth-order assignment, wherein the fourth-order assignment is a non-zero value.
In steps 1041-1046, in normal circumstances, each third-order combination or fourth-order combination is a frequency point having the same frequency as the frequencies of the four transmitting ends, and in the third-order combination, the number of the same frequency points is generally 36, that is, the sum of the same frequency points in the preselected interference frequency group a, the preselected interference frequency group B and the preselected interference frequency group C is 36, if the sum is greater than 36, it indicates that there is one or more frequencies in interference, so that the third-order combination needs to be identified, in this embodiment, by assigning a value, with a value of TH, a value of TH is assigned to 0 or 1, to represent that the detection has been confirmed, and in a corresponding confirmation result, similarly, the fourth-order combination is an assigning manner, the number of the same frequency points is generally 108, that the sum of the same frequency points in the preselected interference frequency group a, the preselected interference frequency group B, the preselected interference frequency group C and the preselected interference frequency group D is 108, and it is determined that the fourth-order combination is good, and after that the value of the fourth-order combination is assigned, the value of TH is assigned to be retrieved, and the value of TH is assigned directly after the third-order combination and the value is required to be retrieved.
105. And screening and eliminating all interference combinations based on all assignment results.
In this embodiment, as long as the sum of the frequency points of the same frequency as the four transmitting ends in the interference combination is greater than the specified difference threshold, the interference combination is confirmed to be interfered, and needs to be screened and removed, and the interference-free combination is left in a quality-selecting manner, so that the situations of eliminating the frequency generating interference and avoiding the intermodulation interference are achieved.
Further, step 105 may further specifically perform:
1051. summing the third-order assignment and the fourth-order assignment under the same interference combination to obtain a total assignment;
1052. judging whether the total assignment is a non-zero value;
1053. if yes, the interference combination is eliminated.
In steps 1051-1054, since the interference combination includes a third order combination and a fourth order combination, one of the third order combination and the fourth order combination is assigned a value of 1, which determines that the interference combination has a frequency interference, and rejects the interference combination to achieve a combination that filters out the frequency interference.
In this embodiment, four transmitting ends under multi-order interference are listed through frequency band combinations existing under the UHF frequency band, frequency points of the same frequency of the frequency band combinations and the four transmitting ends are exhausted under the multi-order interference, the number of the frequency points is counted, assignment is needed to be performed on the interference combinations, the assignment results of the interference combinations are detected to screen out the interference combinations with frequency interference, interference occurring under different orders is eliminated, and a better anti-interference effect is obtained.
The above describes the method for canceling interference in the UHF band in the embodiment of the present invention, and the following describes the apparatus for canceling interference in the UHF band in the embodiment of the present invention, referring to fig. 6, an embodiment of the apparatus for canceling interference in the UHF band in the embodiment of the present invention includes:
the frequency band listing module 201 is configured to calculate, according to a UHF frequency band, a plurality of frequency band combinations existing at a plurality of transmitting ends;
the exhaustion module 202 is configured to outline a combination of multiple transmitting ends under each frequency band combination that may generate multi-order interference, obtain multiple interference combinations, and exhaust frequency points under each interference combination;
the frequency point determining module 203 is configured to calculate a total number of frequency points with the same frequency as the transmitting end under each interference combination;
the assignment module 204 is configured to compare the total number of frequency points of the interference combination with a preset difference threshold to obtain a difference result, and perform assignment processing on the interference combination according to the difference result to obtain an assignment result corresponding to the interference combination;
and the screening and rejecting module 205 is configured to perform screening and rejecting processing on all interference combinations based on all assignment results.
The interference cancellation device in the UHF band in another embodiment of the interference cancellation device in the UHF band in the embodiment of the present invention includes:
the frequency band listing module 201 is configured to calculate, according to a UHF frequency band, a plurality of frequency band combinations existing at a plurality of transmitting ends;
the exhaustion module 202 is configured to outline a combination of multiple transmitting ends under each frequency band combination that may generate multi-order interference, obtain multiple interference combinations, and exhaust frequency points under each interference combination;
the frequency point determining module 203 is configured to calculate a total number of frequency points with the same frequency as the transmitting end under each interference combination;
the assignment module 204 is configured to compare the total number of frequency points of the interference combination with a preset difference threshold to obtain a difference result, and perform assignment processing on the interference combination according to the difference result to obtain an assignment result corresponding to the interference combination;
and the screening and rejecting module 205 is configured to perform screening and rejecting processing on all interference combinations based on all assignment results.
Wherein, the exhaustion module 202 is specifically configured to:
and calculating the combination of the multiple frequency band combinations under the third-order interference and the fourth-order interference to respectively obtain multiple third-order combinations and multiple fourth-order combinations.
Each third order combination and each fourth order combination is constructed as an interference combination.
The frequency bins for each third order combination and each fourth order combination are respectively exhausted.
Wherein, the assignment module 204 is specifically configured to:
judging whether the number of the same frequency points and the four transmitting ends under each third-order combination is the same as the third-order difference threshold value;
if the three values are the same, the corresponding three-order combination is assigned to obtain a three-order assignment, and the three-order assignment is 0;
if the values are different, corresponding third-order combination values are assigned to obtain third-order values, and the third-order values are non-zero values;
judging whether the number of the same frequency points under each fourth-order combination and the four transmitting ends is the same as the fourth-order difference threshold value;
if the four orders are the same, the corresponding fourth order combination is assigned to obtain a fourth order assignment, and the fourth order assignment is 0;
and if the values are different, assigning the corresponding fourth-order combination to obtain a fourth-order assignment, wherein the fourth-order assignment is a non-zero value.
The filtering and rejecting module 205 is specifically configured to:
summing the third-order assignment and the fourth-order assignment under the same interference combination to obtain a total assignment;
judging whether the total assignment is a non-zero value;
if yes, the interference combination is eliminated.
In this embodiment, four transmitting ends under multi-order interference are listed through frequency band combinations existing under the UHF frequency band, frequency points of the same frequency of the frequency band combinations and the four transmitting ends are exhausted under the multi-order interference, the number of the frequency points is counted, assignment is needed to be performed on the interference combinations, the assignment results of the interference combinations are detected to screen out the interference combinations with frequency interference, interference occurring under different orders is eliminated, and a better anti-interference effect is obtained.
Fig. 6 above describes the interference cancellation device in the UHF band in the embodiment of the present invention in detail from the point of view of the modularized functional entity, and the interference cancellation device in the UHF band in the embodiment of the present invention is described in detail from the point of view of hardware processing.
Fig. 7 is a schematic structural diagram of an interference cancellation device in the UHF band, where the interference cancellation device 300 in the UHF band may have a relatively large difference due to different configurations or performances, and may include one or more processors (central processing units, CPU) 310 (e.g., one or more processors) and a memory 320, and one or more storage media 330 (e.g., one or more mass storage devices) storing applications 333 or data 332 according to an embodiment of the present invention. Wherein memory 320 and storage medium 330 may be transitory or persistent storage. The program stored in the storage medium 330 may include one or more modules (not shown), each of which may include a series of instruction operations to the interference cancellation device 300 in the UHF band. Still further, the processor 310 may be configured to communicate with the storage medium 330 and execute a series of instruction operations in the storage medium 330 on the interference cancellation device 300 in the UHF band.
The UHF band based interference cancellation device 300 may also include one or more power supplies 340, one or more wired or wireless network interfaces 350, one or more input/output interfaces 360, and/or one or more operating systems 331, such as Windows service, mac OSX, unix, linux, freeBSD, etc. It will be appreciated by those skilled in the art that the interference cancellation device structure shown in fig. 7 in the UHF band does not constitute a limitation of the interference cancellation device based on the UHF band, and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The invention also provides a computer readable storage medium, which can be a nonvolatile computer readable storage medium, and can also be a volatile computer readable storage medium, wherein the computer readable storage medium stores instructions, and when the instructions run on a computer, the instructions cause the computer to execute the steps of the interference elimination method and system under the UHF frequency band.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the system or apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
- The interference elimination method in UHF frequency band is characterized by being applied to a plurality of transmitting ends and a receiving end, and comprises the following steps:according to the UHF frequency band, calculating a plurality of frequency band combinations existing at a plurality of transmitting ends;listing a plurality of combinations of possible multi-order interference generated by the transmitting ends under each frequency band combination to obtain a plurality of interference combinations, and exhausting frequency points under each interference combination;respectively calculating the number of frequency points with the same frequency as the transmitting end under each interference combination, and then calculating the total number of frequency points with the number of frequency points;comparing the total number of the frequency points of the interference combination with a preset difference threshold value to obtain a difference result, and performing assignment processing on the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination;and screening and eliminating all the interference combinations based on all the assignment results.
- 2. The method of claim 1, wherein the calculating a plurality of frequency band combinations of the plurality of transmitting ends according to the UHF frequency band is applied to four transmitting ends and one receiving end, and the method comprises:according to 48 frequency bands in the UHF frequency band, calculating frequency band combinations of the 48 frequency bands respectively selected by four transmitting ends to obtain 48 4 And (5) frequency band combination.
- 3. The method of claim 1, wherein the multi-order interference includes three-order interference, four-order interference and super-four-order interference.
- 4. The method of claim 3, applied to four transmitting ends and a receiving end, wherein the steps of listing a plurality of combinations of possible multi-order interference generated by the transmitting ends under each frequency band combination, obtaining a plurality of interference combinations, and exhausting frequency points under each interference combination include:calculating combinations of multiple frequency band combinations under third-order interference and fourth-order interference to obtain multiple third-order combinations and multiple fourth-order combinations respectively;constructing each third-order combination and each fourth-order combination into an interference combination;the frequency bins under each of the third order combinations and each of the fourth order combinations are respectively exhausted.
- 5. The method of interference cancellation in the UHF band of claim 4 wherein the difference threshold comprises a third level difference threshold and a fourth level difference threshold, the third level difference threshold being 36 and the fourth level difference threshold being 108.
- 6. The method for interference cancellation in UHF band of claim 5, wherein comparing the total number of frequency points of the interference combination with a preset difference threshold to obtain a difference result, and assigning the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination comprises:judging whether the number of the frequency points under each third-order combination and the same frequency of the four transmitting ends is the same as the third-order difference threshold value;if the three orders are the same, the corresponding three-order combination is assigned to obtain a three-order assignment, wherein the three-order assignment is 0;if the three values are different, the corresponding three-order combination is assigned to obtain a three-order assignment, wherein the three-order assignment is a non-zero value;judging whether the number of the same frequency points of each fourth-order combination and the four transmitting ends is the same as the fourth-order difference threshold value;if the four orders are the same, assigning the corresponding fourth order combination to obtain a fourth order assignment, wherein the fourth order assignment is 0;and if the four values are different, assigning the corresponding fourth-order combination to obtain fourth-order assignment, wherein the fourth-order assignment is a non-zero value.
- 7. The method of interference cancellation in the UHF band of claim 6, wherein said filtering and rejecting all of said interference combinations based on all of said assignment results comprises:summing the third-order assignment and the fourth-order assignment under the same interference combination to obtain a total assignment;judging whether the total assignment is a non-zero value or not;if yes, rejecting the interference combination.
- The interference elimination device under the UHF frequency band is characterized by being applied to four transmitting ends and one receiving end, and comprises:the frequency band listing module is used for calculating a plurality of frequency band combinations existing at a plurality of transmitting ends according to the UHF frequency band;the exhaustion module is used for listing the combinations of the multi-order interference possibly generated by a plurality of transmitting ends under each frequency band combination to obtain a plurality of interference combinations, and exhausting frequency points under each interference combination;the frequency point determining module is used for respectively calculating the total number of frequency points with the same frequency as the transmitting end under each interference combination;the assignment module is used for comparing the total number of the frequency points of the interference combination with a preset difference threshold value to obtain a difference result, and carrying out assignment processing on the interference combination according to the difference result to obtain a corresponding assignment result of the interference combination;and the screening and eliminating module is used for carrying out screening and eliminating processing on all the interference combinations based on all the assignment results.
- An interference cancellation device in the UHF band, characterized in that the interference cancellation device in the UHF band comprises: a memory and at least one processor, the memory having instructions stored therein, the memory and the at least one processor being interconnected by a line;the at least one processor invoking the instructions in the memory to cause the interference cancellation device in the UHF band to perform the interference cancellation method in the UHF band of any one of claims 1-7.
- 10. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the interference cancellation method in the UHF band of any one of claims 1-7.
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| CN202311097152.3A CN117294362B (en) | 2023-08-28 | Interference elimination method, device, equipment and medium in UHF frequency band |
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| CN202311097152.3A CN117294362B (en) | 2023-08-28 | Interference elimination method, device, equipment and medium in UHF frequency band |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187585A (en) * | 2008-10-16 | 2011-09-14 | 高通股份有限公司 | Method and apparatus for avoiding interference between coexisting wireless systems |
| CN114710173A (en) * | 2022-05-27 | 2022-07-05 | 深圳市长丰影像器材有限公司 | Interference signal filtering method and device, electronic equipment and storage medium |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187585A (en) * | 2008-10-16 | 2011-09-14 | 高通股份有限公司 | Method and apparatus for avoiding interference between coexisting wireless systems |
| CN114710173A (en) * | 2022-05-27 | 2022-07-05 | 深圳市长丰影像器材有限公司 | Interference signal filtering method and device, electronic equipment and storage medium |
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