CN110971335B - Signal processing method and device and electronic equipment - Google Patents
Signal processing method and device and electronic equipment Download PDFInfo
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- CN110971335B CN110971335B CN201911168974.XA CN201911168974A CN110971335B CN 110971335 B CN110971335 B CN 110971335B CN 201911168974 A CN201911168974 A CN 201911168974A CN 110971335 B CN110971335 B CN 110971335B
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Abstract
The invention provides a signal processing method, a signal processing device and electronic equipment, and relates to the technical field of communication. Wherein the method comprises the following steps: receiving a target signal; determining the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal; generating a notch signal with equal amplitude and opposite phase to an interference signal corresponding to the interference frequency in the target signal according to the interference frequency; and combining the notch signal with the target signal to obtain a service signal. In the invention, the amplitude of the notch signal is equal to and the phase of the interference signal is opposite to the amplitude of the interference signal, so that the interference signal can be eliminated after the notch signal is combined with the target signal, and the service signal without environmental interference is obtained. In addition, the interference frequency is obtained based on the receiving frequency of the target signal, so that when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency according to the current target signal, and thus, random interference generated by any environmental signal in the target signal can be eliminated.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal processing method, an apparatus, and an electronic device.
Background
With the rapid development of communication technology, the requirements on communication quality are also increasing, and the communication quality depends on the interference in the signal to a great extent, so that the interference in the communication signal needs to be eliminated as much as possible if the communication quality is to be improved.
In the related art, an interference signal generated by a known device in an electronic device may be detected in advance before the electronic device leaves the factory, and when the electronic device receives a communication signal, an anti-phase signal of the interference signal may be generated according to an interference frequency of the known device, and then the anti-phase signal and the communication signal are superimposed, so that signal interference of the known device on the communication signal may be eliminated.
However, in practical applications, since the environment is rich in various signals, environmental signals around the electronic device are also superimposed with communication signals, thereby generating interference. With the change of the surrounding environment, the environmental signal will also change, and the environmental signal is usually more and has irregular frequency, so that it is difficult to detect in advance. Therefore, it is difficult to cancel the random interference generated by the environmental signal.
Disclosure of Invention
The invention provides a signal processing method, a signal processing device and electronic equipment, which are used for solving the problem that the random interference generated by an environment signal is difficult to eliminate.
In order to solve the technical problems, the invention is realized as follows:
in a first aspect, a signal processing method, applied to an electronic device, includes:
receiving a target signal;
determining the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal;
generating a notch signal according to the interference frequency; the amplitude of the interference signal corresponding to the interference frequency in the target signal is equal and the phase of the interference signal is opposite to the amplitude of the interference signal corresponding to the interference frequency in the target signal;
and combining the notch signal with the target signal to obtain a service signal.
In a second aspect, an embodiment of the present invention further provides a signal processing apparatus, where the apparatus includes a first antenna, a second antenna, a processing module, and a combiner, where the second antenna is connected to the processing module, and the first antenna and the processing module are respectively connected to the combiner;
the first antenna is used for receiving a target signal;
the second antenna is used for receiving the target signal;
the processing module is used for determining the interference frequency in the target signal received by the second antenna according to the preset receiving frequency corresponding to the target signal received by the second antenna; generating a notch signal according to the interference frequency; the phase of the notch signal is opposite to that of an interference signal corresponding to the interference frequency in the target signal received by the second antenna;
and the combiner is used for combining the notch signal with the target signal received by the first antenna to obtain a service signal.
In a third aspect, an embodiment of the present invention further provides an electronic device, including the signal processing apparatus of the present invention.
In the embodiment of the invention, after receiving the target signal, the electronic device can determine the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal, and then can generate the notch signal with the same amplitude and opposite phase to the interference signal corresponding to the interference frequency in the target signal, so that the electronic device can perform the combining processing on the notch signal and the target signal to obtain the service signal. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
Drawings
FIG. 1 shows a flow chart of a signal processing method in an embodiment of the invention;
FIG. 2 shows a flow chart of a signal processing method in an embodiment of the invention;
fig. 3 shows a block diagram of a signal processing apparatus in an embodiment of the present invention;
fig. 4 shows a schematic layout of a second antenna according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a target signal in an embodiment of the invention;
FIG. 6 shows a schematic diagram of a notch signal in an embodiment of the invention;
FIG. 7 is a schematic diagram of a traffic signal in an embodiment of the invention;
fig. 8 is a schematic diagram showing a hardware structure of an electronic device in various embodiments of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, a flowchart of a signal processing method according to a first embodiment of the present invention is shown, where the method is applied to an electronic device, and specifically may include the following steps:
in step 101, the electronic device receives a target signal.
In the embodiment of the invention, the target signal is a signal formed by superposing the service signal and the interference signal in the environment, so that the target signal contains the interference frequency. The electronic device may receive the target signal through two paths of receiving paths, where one path is any receiving path in the electronic device for receiving the communication signal, and in general, the receiving path may receive the communication signal through the middle frame antenna, and the other path is a detecting path, where the detecting path may receive the communication signal through an antenna embedded in a rear cover of the electronic device.
Step 102, the electronic device determines the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal.
In the embodiment of the invention, for a specific service signal, a base station, a server or other devices generally transmit through a specific transmitting frequency, and correspondingly, an electronic device can also generally adjust to a corresponding receiving frequency to receive, so that a signal corresponding to a preset receiving frequency in a target signal is the service signal, after the signal corresponding to the preset receiving frequency in the target signal is eliminated, the remaining signal is an interference signal, and the frequency corresponding to the interference signal in the target signal is the interference frequency in the target signal.
Step 103, the electronic equipment generates a notch signal according to the interference frequency; the notch signal and the interference signal corresponding to the interference frequency in the target signal are equal in amplitude and opposite in phase.
In the embodiment of the invention, the electronic equipment can generate the notch signal with the same amplitude and opposite phase to the interference signal corresponding to the interference frequency in the target signal. Since the notch signal and the interference signal have the same amplitude but opposite phases, the interference signal can be eliminated by superimposing the notch signal and the interference signal.
The electronic device may perform the processing from step 102 to step 103 on the target signal received by the detection path, so as to obtain a notch signal.
And 104, the electronic equipment performs combining processing on the notch signal and the target signal to obtain a service signal.
In the embodiment of the invention, the electronic device can perform the combining processing on the notch signal obtained through the detection path and the target signal received through the receiving path, namely, perform signal superposition after frequency alignment. Because the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, the notch signal can eliminate the interference signal in the target signal, so that the service signal with the interference of the environment signal eliminated is obtained.
In the embodiment of the invention, after receiving the target signal, the electronic device can determine the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal, and then can generate the notch signal with the same amplitude and opposite phase to the interference signal corresponding to the interference frequency in the target signal, so that the electronic device can perform the combining processing on the notch signal and the target signal to obtain the service signal. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
Example two
Referring to fig. 2, a flowchart of a signal processing method according to a second embodiment of the present invention is shown, where the method is applied to an electronic device, and may specifically include the following steps:
in step 201, the electronic device receives a target signal.
In an embodiment of the present invention, the electronic device may include a signal processing apparatus, and referring to fig. 3, the signal processing apparatus 30 may include a first antenna 01, a second antenna 02, a processing module 03, and a combiner 04, where the second antenna 02 is connected to the processing module 03, and the first antenna 01 and the processing module 03 are connected to the combiner 04, respectively. The electronic device may receive the target signals through the first antenna 01 and the second antenna 02, where the target signal received by the second antenna 02 may be used to generate a notch signal required for eliminating the interference signal, and the target signal received by the first antenna 01 may be used to combine with the notch signal to obtain the service signal with the interference signal eliminated. When the first antenna 01 receives the target signal, the target signal may not be processed for a while, and the signal monitoring state may be maintained.
In practical applications, alternatively, the first antenna 01 may be embedded in a motherboard bracket of the electronic device, that is, the middle frame, and the second antenna 02 may be embedded in a rear cover of the electronic device, as shown in fig. 4. The first antenna 01 may be an antenna with a circular probe, and may be disposed near the motherboard, so that a signal can enter the first antenna 01, and then go to a subsequent device, such as a Low-noise Amplifier (LNA), and finally may be displayed on a spectrometer. The second antenna 02 is located close to the first antenna 01, so that an interference signal near the main board can be received in real time. Referring to fig. 4, the arrangement position of the second antenna 02 may avoid the position of the electronic device corresponding to the battery 05, the camera 06, and other devices on the rear cover, so as to avoid adverse effects on normal operation of other devices of the electronic device.
The target signal is a superimposed signal of all signals that can be received near the first antenna 01 and the second antenna 02, wherein the superimposed signal includes an interference signal in addition to the service signal, and the frequency range of the interference signal can cover a low frequency band, a medium frequency band and a high frequency band. For example, referring to fig. 5, a schematic diagram of a target signal is shown, where the target signal may include signals with three frequencies f1, f0, and f2, where the signal corresponding to f0 is a traffic signal, and the signals corresponding to f1 and f2 are interference signals in the environment.
In a specific application, the operating frequencies of the first antenna 01 and the second antenna 02 may be different, where the receiving frequency band of the second antenna 02 may be greater than the receiving frequency band of the first antenna 01. The first antenna 01 is a main antenna for communication, whose operating frequency can generally cover a low frequency band and a medium frequency band, and the second antenna 02 is mainly used for detecting interference signals in a target signal, so that its operating frequency can cover a low frequency band, a medium frequency band and a high frequency band, thereby being capable of receiving more interference signals in the environment, and further being capable of removing more interference from the target signal.
In practical applications, the second antenna 02 may alternatively be a PIFA (PIFA) antenna, so that the reliability of the received signal may be improved. Of course, the first antenna 01 may be a picofarad antenna, which is not limited in the embodiment of the present invention.
In step 202, the electronic device detects a reception sensitivity and/or an input signal-to-noise ratio of the target signal.
In the embodiment of the invention, the electronic device can detect at least one of the receiving sensitivity and the input signal-to-noise ratio of the target signal, wherein the receiving sensitivity and the input signal-to-noise ratio can represent the sensitivity degree of the electronic device to the signal, however, in practical application, the decreasing of the receiving sensitivity and the input signal-to-noise ratio is likely to be caused by coupling interference video generated between an interference signal and a service signal in the environment. Therefore, if the current receiving sensitivity is smaller than the preset sensitivity and/or the input signal-to-noise ratio is smaller than the preset signal-to-noise ratio, the electronic device may execute the subsequent steps to reduce noise of the target signal, and if the current receiving sensitivity is greater than or equal to the preset sensitivity and/or the input signal-to-noise ratio is greater than or equal to the preset signal-to-noise ratio, which indicates that the current environment has less interference on the target signal, the electronic device may stop the operation so as not to excessively distort the target signal after performing the subsequent processing on the target signal.
In step 203, the electronic device determines the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal when the receiving sensitivity is smaller than the preset sensitivity and/or the input signal-to-noise ratio is smaller than the preset signal-to-noise ratio.
In the embodiment of the invention, the electronic device can determine the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal under the condition that the current receiving sensitivity is smaller than the preset sensitivity and/or the input signal to noise ratio is smaller than the preset signal to noise ratio.
Specifically, the step of determining the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal may be implemented by the following manner, including: determining respective frequencies included in the target signal; frequencies other than the preset reception frequency among the respective frequencies are determined as interference frequencies in the target signal.
The processing module 03 may include a frequency tracking loop 031 and a processor 032, where the frequency tracking loop 031 is connected to the processor 032, the second antenna 02 is connected to the processor 032, and the processor 032 is connected to the combiner 04. In a specific application, the frequency tracking loop 031 may be a frequency locked loop circuit (Frequency Lock Loop, FLL), or of course, may be another circuit or module capable of determining each frequency in a signal, which is not specifically limited by the embodiment of the present invention. Specifically, when the processor 032 determines that the reception sensitivity is less than the preset sensitivity and/or the input signal-to-noise ratio is less than the preset signal-to-noise ratio, the target signal received by the second antenna 02 may be sent to the frequency tracking loop 031, then the frequency tracking loop 031 may determine each frequency included in the target signal and output the determined frequency to the processor 032, and then, when the processor 032 receives each frequency included in the target signal, other frequencies than the preset reception frequency in each frequency may be determined as the interference frequency in the target signal. The specific implementation manner of determining each frequency included in the target signal through the circuits such as the frequency locking ring may refer to the related art, and the embodiments of the present invention are not described herein again.
In practical applications, optionally, the preset sensitivity may be a sensitivity value that is 5dB, 6dB, 7dB, or the like smaller than the sensitivity of the national standard or the industry standard, and similarly, the preset signal-to-noise ratio may be a signal-to-noise ratio value that is 5dB, 6dB, 7dB, or the like smaller than the signal-to-noise ratio of the national standard or the industry standard, which is not particularly limited in the embodiment of the present invention.
Step 204, the electronic device generates a notch signal according to the interference frequency; the notch signal and the interference signal corresponding to the interference frequency in the target signal are equal in amplitude and opposite in phase.
In the embodiment of the present invention, this step may be specifically implemented by the following manner, including: extracting an interference signal corresponding to the interference frequency from the target signal; and performing anti-phase processing on the interference signal to obtain a notch signal corresponding to the interference signal.
After determining the interference frequency in the target signal, the processor 032 may extract an interference signal corresponding to the interference frequency from the target signal, where the remaining signal of the target signal is the service signal. The processor 032 may then perform anti-phase processing on the interference signal, and the resulting notch signal, as shown in fig. 6, has the same amplitude but opposite phase as the interference signal corresponding to the interference frequencies f1 and f2 in the target signal.
In step 205, the electronic device performs a combining process on the notch signal and the target signal to obtain a service signal.
In the embodiment of the present invention, after the processor 032 processes the notch signal, the notch signal may be transmitted to the input end of the combiner 04 through the coaxial line, and at the same time, the first antenna 01 may also transmit the received target signal to the input end of the combiner 04, so that the combiner 04 may perform the combining process on the notch signal and the target signal received by the first antenna 01, that is, perform signal superposition after frequency alignment. Since the notch signal and the interference signal have equal amplitudes but opposite phases, the interference signal in the target signal can be eliminated by superimposing the notch signal, so that a service signal with the f0 frequency corresponding to the interference of the environment signal is obtained, as shown in fig. 7. After obtaining the service signal, the combiner 04 may output it to a module of a next step for signal processing.
In the embodiment of the invention, after the electronic equipment receives the target signal, the interference frequency in the target signal can be determined according to the preset receiving frequency corresponding to the target signal under the condition that the receiving sensitivity is smaller than the preset sensitivity and/or the input signal to noise ratio is smaller than the preset signal to noise ratio, then the notch signal with the same amplitude and opposite phase to the interference signal corresponding to the interference frequency in the target signal can be generated, and the electronic equipment can further perform the combining processing on the notch signal and the target signal to obtain the service signal. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
Example III
Referring to fig. 3, a block diagram of a signal processing apparatus 30 according to a third embodiment of the present invention is shown, where the apparatus 30 may specifically include a first antenna 01, a second antenna 02, a processing module 03, and a combiner 04, where the second antenna 02 is connected to the processing module 03, and the first antenna 01 and the processing module 03 are connected to the combiner 04, respectively;
a first antenna 01 for receiving a target signal;
a second antenna 02 for receiving a target signal;
a processing module 03, configured to determine an interference frequency in the target signal received by the second antenna 02 according to a preset receiving frequency corresponding to the target signal received by the second antenna 02; generating a notch signal according to the interference frequency; the phase of the notch signal is opposite to that of an interference signal corresponding to the interference frequency in the target signal received by the second antenna 02;
and the combiner 04 is configured to combine the notch signal with the target signal received by the first antenna 01 to obtain a service signal.
Optionally, referring to fig. 3, the processing module 03 is specifically configured to:
extracting an interference signal corresponding to the interference frequency from the target signal received by the second antenna 02;
and performing anti-phase processing on the interference signal to obtain a notch signal corresponding to the interference signal.
Optionally, referring to fig. 3, the processing module 03 is specifically configured to:
detecting the receiving sensitivity or the input signal-to-noise ratio of the target signal received by the second antenna 02;
and under the condition that the receiving sensitivity is smaller than the preset sensitivity or the input signal to noise ratio is smaller than the preset signal to noise ratio, determining the interference frequency in the target signal received by the second antenna 02 according to the preset receiving frequency corresponding to the target signal received by the second antenna 02.
Optionally, referring to fig. 3, the processing module 03 includes a frequency tracking loop 031 and a processor 032, the frequency tracking loop 031 is connected to the processor 032, the second antenna 02 is connected to the processor 032, and the processor 032 is connected to the combiner 04;
a frequency tracking loop 031, in particular for determining the respective frequencies included in the target signal received by the second antenna 02;
the processor 032 is specifically configured to determine, as an interference frequency in the target signal received by the second antenna 02, a frequency other than the preset reception frequency in each frequency.
Optionally, the receiving frequency band of the second antenna 02 is larger than the receiving frequency band of the first antenna 01.
Optionally, the second antenna 02 is a pico-farad antenna.
The signal processing device provided in the embodiment of the present invention can implement each process implemented by the signal processing device in the method embodiments of fig. 1 to 2, and in order to avoid repetition, a description is omitted here.
In the embodiment of the invention, after the electronic device receives the target signals through the first antenna and the second antenna respectively, the processing module can determine the interference frequency in the target signals received by the second antenna according to the preset receiving frequency corresponding to the target signals received by the second antenna, then the notch signals with the same amplitude and opposite phase to the interference signals corresponding to the interference frequency in the target signals can be generated, and the electronic device can further perform the combining processing on the notch signals and the target signals received by the first antenna through the combiner, so that the service signals are obtained. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
Example IV
The embodiment of the invention also provides electronic equipment which comprises the signal processing device.
Optionally, the second antenna is embedded in a rear cover of the electronic device.
In the embodiment of the invention, after the electronic device receives the target signals through the first antenna and the second antenna respectively, the processing module can determine the interference frequency in the target signals received by the second antenna according to the preset receiving frequency corresponding to the target signals received by the second antenna, then the notch signals with the same amplitude and opposite phase to the interference signals corresponding to the interference frequency in the target signals can be generated, and the electronic device can further perform the combining processing on the notch signals and the target signals received by the first antenna through the combiner, so that the service signals are obtained. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
Example five
Figure 8 is a schematic diagram of a hardware architecture of an electronic device implementing various embodiments of the invention,
the electronic device 800 includes, but is not limited to: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, processor 810, and power supply 811. It will be appreciated by those skilled in the art that the electronic device structure shown in fig. 8 is not limiting of the electronic device and that the electronic device may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. In the embodiment of the invention, the electronic equipment comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer and the like.
Wherein, the radio frequency unit 801 is configured to receive a target signal;
a processor 810, configured to determine an interference frequency in the target signal according to a preset receiving frequency corresponding to the target signal; generating a notch signal according to the interference frequency; the amplitude of the interference signal corresponding to the interference frequency in the target signal is equal and the phase of the interference signal is opposite to the amplitude of the interference signal corresponding to the interference frequency in the target signal; and combining the notch signal with the target signal to obtain a service signal.
In the embodiment of the invention, after receiving the target signal, the electronic device can determine the interference frequency in the target signal according to the preset receiving frequency corresponding to the target signal, and then can generate the notch signal with the same amplitude and opposite phase to the interference signal corresponding to the interference frequency in the target signal, so that the electronic device can perform the combining processing on the notch signal and the target signal to obtain the service signal. In the embodiment of the invention, the amplitude of the notch signal is equal to that of the interference signal, but the phases are opposite, so that the interference signal in the target signal can be eliminated after the notch signal is combined with the target signal, and a service signal without the interference of the environment signal can be obtained. In addition, because the interference frequency is determined based on the preset receiving frequency corresponding to the current target signal, when the target signal and the receiving frequency thereof change, the electronic equipment can still determine the interference frequency of the current target signal, so that random interference generated by any environmental signal can be eliminated from the target signal.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 801 may be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, specifically, receiving downlink data from a base station, and then processing the received downlink data by the processor 810; and, the uplink data is transmitted to the base station. In general, the radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 801 may also communicate with networks and other devices through a wireless communication system.
The electronic device provides wireless broadband internet access to the user through the network module 802, such as helping the user to send and receive e-mail, browse web pages, access streaming media, and the like.
The audio output unit 803 may convert audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the electronic device 800. The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.
The input unit 804 is used for receiving an audio or video signal. The input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted via the radio frequency unit 801 or the network module 802. The microphone 8042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 801 in case of a telephone call mode.
The electronic device 800 also includes at least one sensor 805 such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 8061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 8061 and/or the backlight when the electronic device 800 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for recognizing the gesture of the electronic equipment (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; the sensor 805 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.
The display unit 806 is used to display information input by a user or information provided to the user. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 807 is operable to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the electronic device. In particular, the user input unit 807 includes a touch panel 8071 and other input devices 8072. Touch panel 8071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on touch panel 8071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 8071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends the touch point coordinates to the processor 810, and receives and executes commands sent from the processor 810. In addition, the touch panel 8071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mice, joysticks, and so forth, which are not described in detail herein.
Further, the touch panel 8071 may be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 810 to determine a type of touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of touch event. Although in fig. 8, the touch panel 8071 and the display panel 8061 are two independent components for implementing the input and output functions of the electronic device, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the electronic device, which is not limited herein.
The interface unit 808 is an interface to which an external device is connected to the electronic apparatus 800. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic apparatus 800 or may be used to transmit data between the electronic apparatus 800 and an external device.
The memory 809 can be used to store software programs as well as various data. The memory 809 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory 809 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 810 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 809, and invoking data stored in the memory 809, thereby performing overall monitoring of the electronic device. The processor 810 may include one or more processing units; preferably, the processor 810 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 810.
The electronic device 800 may also include a power supply 811 (e.g., a battery) for powering the various components, and the power supply 811 may preferably be logically coupled to the processor 810 through a power management system that provides for managing charge, discharge, and power consumption.
In addition, the electronic device 800 includes some functional modules, which are not shown, and will not be described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (6)
1. A signal processing method applied to an electronic device, the electronic device including a first antenna and a second antenna, the method comprising:
receiving a target signal through the first antenna and the second antenna respectively; the target signal received by the first antenna is used for communication, the target signal received by the second antenna is an interference signal near a main board of the electronic equipment, and the working frequency range of the second antenna is larger than that of the first antenna; detecting the receiving sensitivity and/or the input signal-to-noise ratio of the target signal received by the first antenna;
determining frequencies except a preset receiving frequency in all frequencies included in the target signal received by the second antenna as interference frequencies of the target signal received by the first antenna under the condition that the receiving sensitivity is smaller than a preset sensitivity and/or the input signal-to-noise ratio is smaller than a preset signal-to-noise ratio; the preset receiving frequency is the working frequency of the first antenna;
generating a notch signal according to the interference frequency; the amplitude of the notch signal is equal to that of an interference signal corresponding to the interference frequency in a target signal received by the first antenna, and the phases of the notch signal and the interference signal are opposite;
and combining the notch signal with the target signal to obtain a service signal.
2. The method of claim 1, wherein the step of generating a notch signal based on the interference frequency comprises:
extracting an interference signal corresponding to the interference frequency from the target signal;
and performing anti-phase processing on the interference signal to obtain a notch signal corresponding to the interference signal.
3. The signal processing device is characterized by comprising a first antenna, a second antenna, a processing module and a combiner, wherein the second antenna is connected with the processing module, and the first antenna and the processing module are respectively connected with the combiner;
the first antenna is used for receiving a target signal; the target signal received by the first antenna is used for communication;
the second antenna is used for receiving the target signal; the target signal received by the second antenna is an interference signal near a main board of the electronic equipment, and the working frequency range of the second antenna is larger than that of the first antenna;
the processing module is used for detecting the receiving sensitivity and/or the input signal-to-noise ratio of the target signal received by the first antenna; determining frequencies except a preset receiving frequency in each frequency included in the target signal received by the second antenna as interference frequencies in the target signal received by the first antenna under the condition that the receiving sensitivity is smaller than a preset sensitivity and/or the input signal-to-noise ratio is smaller than a preset signal-to-noise ratio; the preset receiving frequency is the working frequency of the first antenna; generating a notch signal according to the interference frequency; the notch signal is opposite to the phase of an interference signal corresponding to the interference frequency in the target signal received by the first antenna;
and the combiner is used for combining the notch signal with the target signal received by the first antenna to obtain a service signal.
4. The apparatus according to claim 3, wherein the processing module is specifically configured to:
extracting an interference signal corresponding to the interference frequency from the target signal received by the second antenna;
and performing anti-phase processing on the interference signal to obtain a notch signal corresponding to the interference signal.
5. An electronic device, characterized in that it comprises the signal processing apparatus as claimed in any one of claims 3 to 4.
6. The electronic device of claim 5, wherein the second antenna is embedded in a rear cover of the electronic device.
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478656A (en) * | 2008-12-15 | 2009-07-08 | 北京创毅视讯科技有限公司 | Co-channel interference filtering method and apparatus therefor |
| CN101742382A (en) * | 2009-11-24 | 2010-06-16 | 北京中星微电子有限公司 | Active noise cancellation method and earphone |
| CN102571656A (en) * | 2008-05-31 | 2012-07-11 | 华为技术有限公司 | Method and device for eliminating interference from signal in short-range wireless network |
| CN102742235A (en) * | 2011-12-02 | 2012-10-17 | 华为技术有限公司 | Method for eliminating adjacent channel interference, modem and system |
| KR101551811B1 (en) * | 2014-05-19 | 2015-09-10 | 최수호 | Radar apparatus and method for frequency interference cancellation thereof |
| CN105207962A (en) * | 2015-06-28 | 2015-12-30 | 知鑫知识产权服务（上海）有限公司 | Interference signal searching method with high frequency precision |
| CN105898783A (en) * | 2016-06-07 | 2016-08-24 | 北京小米移动软件有限公司 | Processing method and device of wireless full-duplex communication self-interference signal |
| CN105929376A (en) * | 2016-04-25 | 2016-09-07 | 哈尔滨工业大学 | Smart jamming noise signal design method based on velocity pull-off |
| CN106230446A (en) * | 2016-08-19 | 2016-12-14 | 维沃移动通信有限公司 | A kind of anti-jamming circuit, mobile terminal and the method for suppression harmonic wave interference |
| CN106656226A (en) * | 2016-12-06 | 2017-05-10 | 大唐半导体设计有限公司 | Narrowband interference processing method and device |
| CN107967919A (en) * | 2016-10-19 | 2018-04-27 | 展讯通信（上海）有限公司 | Eliminate the method, device and mobile terminal of TDD noises |
| CN108252753A (en) * | 2018-01-17 | 2018-07-06 | 浙江中控技术股份有限公司 | The method, apparatus and equipment of a kind of filtering interference signals |
| CN108365863A (en) * | 2018-02-09 | 2018-08-03 | 妙原科技有限公司 | A kind of device and counteracting method with reception out-of-band interference in adaptive cancellation wireless transceiver system |
| CN108834159A (en) * | 2018-05-31 | 2018-11-16 | 深圳市零度智控科技有限公司 | Intelligent antijam wireless communication method, system, server and storage medium |
| CN109121195A (en) * | 2017-06-23 | 2019-01-01 | 中兴通讯股份有限公司 | A kind of channeling control method, device and equipment |
| CN109728960A (en) * | 2017-10-27 | 2019-05-07 | 大唐移动通信设备有限公司 | A kind of test method and device |
| CN109768810A (en) * | 2019-03-07 | 2019-05-17 | 维沃移动通信有限公司 | A kind of signal processing circuit, terminal device and signal processing method |
| CN110061791A (en) * | 2019-04-11 | 2019-07-26 | Oppo广东移动通信有限公司 | Electronic equipment receiving sensitivity test method and system, storage medium |
| CN110166065A (en) * | 2019-05-24 | 2019-08-23 | 维沃移动通信有限公司 | Signal processing method, network collocating method and relevant device |
-
2019
- 2019-11-25 CN CN201911168974.XA patent/CN110971335B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571656A (en) * | 2008-05-31 | 2012-07-11 | 华为技术有限公司 | Method and device for eliminating interference from signal in short-range wireless network |
| CN101478656A (en) * | 2008-12-15 | 2009-07-08 | 北京创毅视讯科技有限公司 | Co-channel interference filtering method and apparatus therefor |
| CN101742382A (en) * | 2009-11-24 | 2010-06-16 | 北京中星微电子有限公司 | Active noise cancellation method and earphone |
| CN102742235A (en) * | 2011-12-02 | 2012-10-17 | 华为技术有限公司 | Method for eliminating adjacent channel interference, modem and system |
| KR101551811B1 (en) * | 2014-05-19 | 2015-09-10 | 최수호 | Radar apparatus and method for frequency interference cancellation thereof |
| CN105207962A (en) * | 2015-06-28 | 2015-12-30 | 知鑫知识产权服务（上海）有限公司 | Interference signal searching method with high frequency precision |
| CN105929376A (en) * | 2016-04-25 | 2016-09-07 | 哈尔滨工业大学 | Smart jamming noise signal design method based on velocity pull-off |
| CN105898783A (en) * | 2016-06-07 | 2016-08-24 | 北京小米移动软件有限公司 | Processing method and device of wireless full-duplex communication self-interference signal |
| CN106230446A (en) * | 2016-08-19 | 2016-12-14 | 维沃移动通信有限公司 | A kind of anti-jamming circuit, mobile terminal and the method for suppression harmonic wave interference |
| CN107967919A (en) * | 2016-10-19 | 2018-04-27 | 展讯通信（上海）有限公司 | Eliminate the method, device and mobile terminal of TDD noises |
| CN106656226A (en) * | 2016-12-06 | 2017-05-10 | 大唐半导体设计有限公司 | Narrowband interference processing method and device |
| CN109121195A (en) * | 2017-06-23 | 2019-01-01 | 中兴通讯股份有限公司 | A kind of channeling control method, device and equipment |
| CN109728960A (en) * | 2017-10-27 | 2019-05-07 | 大唐移动通信设备有限公司 | A kind of test method and device |
| CN108252753A (en) * | 2018-01-17 | 2018-07-06 | 浙江中控技术股份有限公司 | The method, apparatus and equipment of a kind of filtering interference signals |
| CN108365863A (en) * | 2018-02-09 | 2018-08-03 | 妙原科技有限公司 | A kind of device and counteracting method with reception out-of-band interference in adaptive cancellation wireless transceiver system |
| CN108834159A (en) * | 2018-05-31 | 2018-11-16 | 深圳市零度智控科技有限公司 | Intelligent antijam wireless communication method, system, server and storage medium |
| CN109768810A (en) * | 2019-03-07 | 2019-05-17 | 维沃移动通信有限公司 | A kind of signal processing circuit, terminal device and signal processing method |
| CN110061791A (en) * | 2019-04-11 | 2019-07-26 | Oppo广东移动通信有限公司 | Electronic equipment receiving sensitivity test method and system, storage medium |
| CN110166065A (en) * | 2019-05-24 | 2019-08-23 | 维沃移动通信有限公司 | Signal processing method, network collocating method and relevant device |
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|---|---|
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