CN108183716A - Wireless data communication co-channel interference suppression receiver framework and its method of work - Google Patents
Wireless data communication co-channel interference suppression receiver framework and its method of work Download PDFInfo
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- CN108183716A CN108183716A CN201711464438.5A CN201711464438A CN108183716A CN 108183716 A CN108183716 A CN 108183716A CN 201711464438 A CN201711464438 A CN 201711464438A CN 108183716 A CN108183716 A CN 108183716A
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- 238000004891 communication Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001629 suppression Effects 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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Abstract
The invention discloses a kind of wireless data communication co-channel interference suppression receiver framework and its method of work, when subcarrier detection circuit has detected that the machine radiofrequency signal reaches, control switch works with phase regulator；Range detector detects co-channel interference signal amplitude in real time；Phase regulator makes mixed signal phase consistent with co-channel interference signal phase；The consistent mixed signal of phase and co-channel interference signal are carried out subtraction by linear subtractive device, eliminate co-channel interference, and positive effect is generated to 5G network constructions, WIFI interconnections, car networking, ship networking, Internet of Things；Meter can eliminate wireless receiver co-channel interference.Cancellation receiver co-channel interference；Enhance receiver antijamming capability.
Description
Technical field
The invention belongs to the communication technologys, are related to a kind of wireless data communication co-channel interference suppression receiver framework and its work
Method.
Background technology
With the development of the communication technology, wireless data transmission has been had been applied in various equipment, as mobile phone, Internet of Things are set
It is standby etc., but it is channel radio that the co-channel interference in a point to multi-point wireless signal problem of co-channel interference, electronic countermeasure, which inhibits problem,
It is most difficult to solve the problems, such as in letter.
Invention content
The object of the present invention is to provide a kind of wireless data communication co-channel interference suppression receiver framework and its method of work,
For eliminating the problem of co-channel interference of wireless receiver, the antijamming capability of wireless receiver is improved.
To solve the above-mentioned problems, the present invention adopts the following technical scheme that：
Wireless data communication co-channel interference suppression receiver framework, including subcarrier detection circuit, interferer signal detection
Circuit, switch 1, switch 2, switch 3,2 control selections circuits of switch, signal amplitude detection circuit, signal phase adjust circuit, letter
Number attenuator circuit, signal attenuator amplitude regulating circuit and a subtraction circuit；
The radiofrequency signal ID that subcarrier detection circuit is responsible for detecting subcarrier carrying reaches starting and end with signal
Temporal information；
Interference signal on interferer signal detection circuit detection wireless receiver working frequency range；
Signal amplitude detection circuit measures interference signal amplitude and useful signal amplitude in real time；
Signal phase, which adjusts circuit, ensures to switch 1 output signal with switching 3 output signals in subtracter input terminal phase one
It causes；
Signal attenuator circuit will be adjusted to consistent with interference signal amplitude with frequency mixed signal amplitude；
Signaling switch is used for that signal is controlled to export；
Subtraction circuit is used for eliminating co-channel interference signal.
Further, subcarrier detection circuit, which has detected, opens respective antenna switch when radiofrequency signal is sent to the machine.
Wireless data communication co-channel interference suppression receiver framework method of work, specific work process are as follows：
Step 1: all switches of original state are closed；
Step 2: co-channel interference signal deteching circuit is in real time detected wireless reception of signals；
Step 3: when co-channel interference signal deteching circuit detects co-channel interference, 2 are turned on the switch；
Step 4: amplitude detection circuit detects co-channel interference signal amplitude in real time；
Step 5: adjusting co-channel interference signal amplitude by attenuator, make amplitude output signal as possible close to co-channel interference
Signal amplitude；
Step 6: subcarrier detection circuit detects subcarrier information in real time, when receiving the machine carrier wave arrival information
Turn on the switch 1, switch 2, switch 3；
Step 7: setting signal phase regulating circuit, makes 1 phase of output signal of switch exist with 3 phase of output signal of switch
Subtraction operator input terminal phase is consistent；
Step 8: the signal exported after subtraction operator eliminates co-channel interference；
Step 9: subcarrier instruction useful signal transmission terminates, all switches are closed.
Further, amplitude detection circuit detects co-channel interference signal amplitude and notes down in real time.
The key point of the present invention is that the designed holder composition has used subcarrier detection circuit, amplitude detection circuit, phase
Adjuster and subtracter, feature are：
When one subcarrier detection circuit has detected that the machine radiofrequency signal reaches, control switch and phase regulator work
Make；
Secondly range detector detects co-channel interference signal amplitude in real time；
Thirdly phase regulator makes mixed signal phase consistent with co-channel interference signal phase；
The consistent mixed signal of phase and co-channel interference signal are carried out subtraction by its four linear subtractives device, are eliminated dry with frequency
It disturbs.
The positive effect of the present invention is：
The present invention provides a kind of elimination wireless receiver with the jamproof designing scheme of frequency, to 5G network constructions, WIFI
Interconnection, car networking, ship networking, Internet of Things generate positive effect；Meter can eliminate wireless receiver co-channel interference.It eliminates and receives
Machine co-channel interference；Enhance receiver antijamming capability.
Description of the drawings
Fig. 1 is the circuit design block diagram using embodiment 1 of the present invention.
Fig. 2 is wireless data communication co-channel interference suppression receiver framework flow chart of work methods of the present invention.
Specific embodiment
Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, with the technical solution that the present invention will be described in detail, but not because
This is limited the present invention among the embodiment described range.
Such as attached drawing 1, the present invention provides a kind of wireless data communication co-channel interference suppression receiver frameworks, are carried including auxiliary
Wave detection circuit, interferer signal detection circuit, 2 control selections circuits of switch, signal amplitude detection circuit, signal phase adjust electricity
Road, signal attenuator circuit, signal attenuator amplitude regulating circuit, three switching circuits, a subtraction circuit, collective effect
To eliminate the co-channel interference of wireless receiver.
As shown in Fig. 2, specific work process is as follows：
All switches of one original state are closed；
Secondly co-channel interference signal deteching circuit is in real time detected wireless reception of signals；
Thirdly when co-channel interference signal deteching circuit detects co-channel interference, it turns on the switch 2；
Its four amplitude detection circuit detects co-channel interference signal amplitude, and record in real time；
Its five by attenuator adjust co-channel interference signal amplitude, make amplitude output signal as possible close to co-channel interference signal
Amplitude；
Its six subcarriers detection circuit detects subcarrier information in real time, when receive the machine carrier wave reach information when open
Switch 1, switch 2, switch 3；
Its seven setting signals phase regulating circuit makes 1 phase of output signal of switch with 3 phase of output signal of switch in subtraction
Arithmetic unit input terminal phase is consistent；
Its eight signal exported after subtraction operator eliminates the need for co-channel interference；
The instruction useful signal transmission of its nine subcarrier terminates, and closes all switches.
It will be appreciated by those skilled in the art that wireless receiver antenna coupled signal is the linear coupling of a multisignal source
Superposition can detach useful signal, as long as we are aware of effectively for homogenous frequency signal for different frequency signals by filtering
Signal reaches and end time, interference signal amplitude can be eliminated by operation and interfered, and it is same that Fig. 1 provides wireless data communication
Frequency interference suppressing receiver block architecture diagram is exactly a kind of design method that can eliminate co-channel interference signal from mixed signal,
It detects co-channel interference signal amplitude in real time, then by it from the mixed signal for being mixed with co-channel interference signal and useful signal
It eliminates.
Embodiment 1：
The wireless data communication co-channel interference suppression receiver block architecture diagram of the present embodiment includes：
Subcarrier information detection, it completes wireless carrier signal ID detections and arrival time detection, antenna channels
Switch, Lag synchronization adjuster, signal transmission end detection circuit, linear adder device.
Receiver architecture specific work process is as follows：
S101a, interferer signal detection circuit detect the interference signal that receiver antenna is coupled in real time；
S102a, it detects interference signal, turns on the switch 2；
S103a, interference signal enter interference signal amplitude real-time detection circuit, detect interference signal amplitude in real time, and remember
Record range value；
S104a, subcarrier information detection detect receiver inlet subcarrier information in real time, it is determined whether have
The radiofrequency signal for being sent to the machine reaches, determines radiofrequency signal arrival time and end time；
S105a, signal reaches all control switches of opening；
S106a, control phase regulator work；
S107a, setting attenuator amplitude, make its amplitude output signal consistent with interference signal amplitude；
S108a, signal operation is carried out, eliminates interference signal；
S109a, subcarrier information detection detect end signal mark, reset all circuits.
Complete specific statement is carried out to the technical solution in the present invention herein, still, example described herein is only
It is a part of example, is not whole examples.On the basis of the present invention, those skilled in the art are not making innovative work
Other examples obtained under the premise of work belong to the scope that the present invention protects.
Claims (4)
1. wireless data communication co-channel interference suppression receiver framework, it is characterised in that：Including subcarrier detection circuit, interference
Signal deteching circuit, switch 1, switch 2, switch 3,2 control selections circuits of switch, signal amplitude detection circuit, signal phase tune
Economize on electricity road, signal attenuator circuit, signal attenuator amplitude regulating circuit and a subtraction circuit；
Subcarrier detection circuit is responsible for detecting radiofrequency signal ID and signal arrival starting and the end time that subcarrier carries
Information；
Interference signal on interferer signal detection circuit detection wireless receiver working frequency range；
Signal amplitude detection circuit measures interference signal amplitude and useful signal amplitude in real time；
Signal phase, which adjusts circuit, ensures that 1 output signal of switch and 3 output signals of switch are consistent in subtracter input terminal phase；
Signal attenuator circuit will be adjusted to consistent with interference signal amplitude with frequency mixed signal amplitude；
Signaling switch is used for that signal is controlled to export；
Subtraction circuit is used for eliminating co-channel interference signal.
2. wireless data communication co-channel interference suppression receiver framework described in claim 1, it is characterised in that：Subcarrier is examined
Slowdown monitoring circuit, which has detected, opens respective antenna switch when radiofrequency signal is sent to the machine.
3. wireless data communication co-channel interference suppression receiver framework method of work described in claim 1, which is characterized in that tool
Body running process is as follows：
Step 1: all switches of original state are closed；
Step 2: co-channel interference signal deteching circuit is in real time detected wireless reception of signals；
Step 3: when co-channel interference signal deteching circuit detects co-channel interference, 2 are turned on the switch；
Step 4: amplitude detection circuit detects co-channel interference signal amplitude in real time；
Step 5: adjusting co-channel interference signal amplitude by attenuator, make amplitude output signal as possible close to co-channel interference signal
Amplitude；
Step 6: subcarrier detection circuit detects subcarrier information in real time, open when receiving the machine carrier wave and reach information
Switch 1, switch 2, switch 3；
Step 7: setting signal phase regulating circuit, makes 1 phase of output signal of switch with 3 phase of output signal of switch in subtraction
Arithmetic unit input terminal phase is consistent；
Step 8: the signal exported after subtraction operator eliminates co-channel interference；
Step 9: subcarrier instruction useful signal transmission terminates, all switches are closed.
4. the wireless data communication co-channel interference suppression receiver framework method of work described in claim 3, it is characterised in that：Width
Degree detection circuit detects co-channel interference signal amplitude and notes down in real time.
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| CN201711464438.5A CN108183716B (en) | 2017-12-28 | 2017-12-28 | Wireless data communication same-frequency interference suppression receiver architecture and working method thereof |
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| CN201711464438.5A CN108183716B (en) | 2017-12-28 | 2017-12-28 | Wireless data communication same-frequency interference suppression receiver architecture and working method thereof |
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| CN108183716B CN108183716B (en) | 2020-06-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429947A (en) * | 2019-09-02 | 2019-11-08 | 深圳市友华通信技术有限公司 | A kind of method and communicating terminal reducing co-channel interference |
| CN108183716B (en) * | 2017-12-28 | 2020-06-30 | 浙江中智海通信科技有限公司 | Wireless data communication same-frequency interference suppression receiver architecture and working method thereof |
| CN113169762A (en) * | 2021-04-19 | 2021-07-23 | 华为技术有限公司 | Communication device and method |
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