CN115133945A - Signal processing device and method - Google Patents
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- CN115133945A CN115133945A CN202210511521.8A CN202210511521A CN115133945A CN 115133945 A CN115133945 A CN 115133945A CN 202210511521 A CN202210511521 A CN 202210511521A CN 115133945 A CN115133945 A CN 115133945A
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- H—ELECTRICITY
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- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The application discloses a signal processing device and a signal processing method. The device comprises: the antenna system comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first frequency mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the control module is used for sending a first high-frequency signal to the first mixer; the first frequency mixer is used for generating a first local oscillation signal, mixing the first high-frequency signal and the first local oscillation signal to obtain a low-frequency signal, and sending the low-frequency signal to the second frequency mixer; the second frequency mixer is used for generating a second local oscillation signal, mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal, and sending the second high-frequency signal to the antenna port; an antenna port for outputting the second high frequency signal. By adopting the signal processing device of the embodiment of the application, the power loss can be reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal processing apparatus and method.
Background
With the development of the fifth Generation Mobile Communication Technology (5G), 5G Technology is applied to more and more vehicle-mounted products. For example, an On Board Unit (OBU) box in a vehicle networking (V2X) system can better implement collision warning or automatic driving by using the highly reliable and low-delay characteristics of the 5G technology. However, since the 5G operating frequency band is as high as 5.9 ghz, when communicating in this frequency band, the OBU box needs to transmit the output signal with high frequency to the antenna, which causes great power loss in the transmission process.
Therefore, how to reduce power loss becomes a hot issue in current research.
Disclosure of Invention
The embodiment of the invention provides a signal processing device and a signal processing method, which can reduce power loss.
In a first aspect, the present application provides a signal processing apparatus comprising: the antenna system comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first frequency mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the control module is used for sending a first high-frequency signal to the first mixer; the first frequency mixer is used for generating a first local oscillator signal, mixing the first high-frequency signal and the first local oscillator signal to obtain a low-frequency signal, and sending the low-frequency signal to the second frequency mixer; the second frequency mixer is used for generating a second local oscillation signal, mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal, and sending the second high-frequency signal to the antenna port; the antenna port is used for outputting a second high-frequency signal.
Therefore, the low-frequency signal is obtained by mixing the first high-frequency signal and the first local oscillator signal, and is transmitted to the antenna module, so that the power loss can be reduced in the process of transmitting the low-frequency signal from the processing module to the antenna module; the low-frequency signal and the second local oscillator signal are mixed to obtain a second high-frequency signal, so that the second high-frequency signal output from the antenna port can keep the original frequency as much as possible.
In one implementation, the antenna module further includes a first switch, where the first switch includes a first switch port and a second switch port, the second mixer is connected to the first switch port, and the first switch port is connected to the antenna port; the second frequency mixer is connected with a second switch port, the second switch port is connected with the control module, and the control module is connected with the second frequency mixer; the second mixer is configured to transmit a second high-frequency signal to the antenna port through the first switch port when the second mixer is configured to transmit the second high-frequency signal to the antenna port; the second mixer is further configured to send a second high-frequency signal to the control module through a second switch port; the control module is further configured to measure power of the second high-frequency signal to obtain an adjustment signal, send the adjustment signal to the first mixer, and send adjustment information to the second mixer; the first frequency mixer is also used for adjusting the amplitude of the first local oscillation signal according to the adjusting signal; the second mixer is further configured to adjust an amplitude of the second local oscillator signal according to the adjustment signal.
It can be seen that the second high-frequency signal is sent to the control module, so that the control module can measure the power of the second high-frequency signal, determine the adjustment signal, and send the adjustment signal to the first mixer and the second mixer respectively, so that the first mixer adjusts the amplitude of the first local oscillation signal, and the second mixer adjusts the amplitude of the second local oscillation signal, so that the next mixing result is more ideal.
In one implementation, the control module includes a high frequency signal output port and an adjustment signal output port; the high-frequency signal output port is used for transmitting a first high-frequency signal to the first mixer; the adjusting signal output port is used for sending an adjusting signal to the first mixer and sending an adjusting signal to the second mixer.
In one implementation manner, the antenna module further includes a second switch, where the second switch includes a third switch port and a fourth switch port, the antenna port is connected to the third switch port, and the third switch port is connected to the second mixer; the antenna port is connected with the fourth switch port, and the fourth switch port is connected with the control module; the second mixer is specifically configured to send a second high-frequency signal to the antenna port through the third switch port when the second mixer is used to send the second high-frequency signal to the antenna port; and the antenna port is also used for receiving the first input signal and sending the first input signal to the control module through the fourth switch port.
Therefore, by adopting the second switch, the data transmitted by the antenna port can be divided into the output path and the input path, and different processing can be performed on two different paths respectively, so that the signal processing device can obtain better input signals and output signals.
In one implementation, the antenna module further includes a third switch, a fourth switch, and a low noise amplifier, the third switch including a fifth switch port and a sixth switch port, the fourth switch including a seventh switch port and an eighth switch port; the fourth switch port is connected with a fifth switch port, the fifth switch port is connected with a seventh switch port, and the seventh switch port is connected with the control module; the fourth switch port is connected with a sixth switch port, the sixth switch port is connected with the input port of the low noise amplifier, the output port of the low noise amplifier is connected with an eighth switch port, and the eighth switch port is connected with the control module; an antenna port, specifically configured to send a first input signal to a fifth switch port through a fourth switch port; a fifth switch port for sending the first input signal to a seventh switch port; the seventh switch port is used for sending the first input signal to the control module; an antenna port, specifically configured to send a first input signal to a sixth switch port through a fourth switch port; a sixth switch port for sending the first input signal to the input port of the low noise amplifier; the low-noise amplifier is used for carrying out noise coefficient processing on the first input signal to obtain a second input signal and sending the second input signal to the eighth switch port through an output port of the low-noise amplifier; the eighth switch port is used for sending a second input signal to the control module; the control module is used for receiving a first input signal from the seventh switch port and measuring the signal strength of the first input signal to obtain a first Received Signal Strength Indicator (RSSI) signal; receiving a second input signal from the eighth switch port, and measuring the signal strength of the second input signal to obtain a second RSSI signal; and compensating the second input signal according to the first RSSI signal and the second RSSI signal to obtain a third input signal.
Therefore, two transmission paths are established through the third switch and the fourth switch to transmit the first input signal, so that the control module can respectively receive the first input signal which is not processed by the low-noise amplifier and the second input signal which is processed by the low-noise amplifier, and the second input signal which is processed by the low-noise amplifier is compensated through the first RSSI of the first input signal and the second RSSI of the second input signal, so that the third input signal with more accurate signal intensity is obtained.
In one implementation, the control module further includes an input port for receiving a third input signal.
In one implementation manner, the processing module further includes a low-frequency power amplifier, an output port of the first mixer is connected to a first input port of the low-frequency power amplifier, and an output port of the low-frequency power amplifier is connected to an input port of the second mixer; the control module is connected with a second input port of the low-frequency power amplifier; the first frequency mixer is specifically used for mixing a first high-frequency signal and a first local oscillator signal to obtain a reference low-frequency signal and sending the reference low-frequency signal to a first input port of the low-frequency power amplifier; and the low-frequency power amplifier is used for amplifying the power of the reference low-frequency signal according to the adjusting signal to obtain a low-frequency signal and sending the low-frequency signal to the second mixer.
Therefore, the power of the reference low-frequency signal can be amplified through the low-frequency power amplifier, so that high-power output is easily realized, and the power loss in the transmission process is compensated.
In one implementation, the adjustment signal output port is further configured to send an adjustment signal to the low frequency power amplifier.
Therefore, the low-frequency power amplifier can adjust the gain of the low-frequency amplifier according to the adjusting signal, so that the gain of the low-frequency power amplifier is more accurate, and the power of the reference low-frequency signal can be amplified to more appropriate power.
In a second aspect, the present application provides a signal processing method, which is applied to a signal processing apparatus including: the antenna system comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first frequency mixer and the second frequency mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the method comprises the following steps: mixing the first high-frequency signal and the first local oscillation signal to obtain a low-frequency signal; mixing the low-frequency signal and a second local oscillator signal to obtain a second high-frequency signal; the second high frequency signal is transmitted through the antenna port.
Therefore, a low-frequency signal can be obtained and transmitted by mixing the first high-frequency signal and the first local oscillator signal, so that the power loss in the transmission process is reduced; the second high-frequency signal can be obtained and output by mixing the low-frequency signal and the second local oscillation signal, so that the original frequency of the output second high-frequency signal is kept as much as possible.
In a third aspect, the present application provides a signal processing device comprising the signal processing apparatus of the first aspect and any possible implementation manner thereof.
In a fourth aspect, the present application provides a computer-readable storage medium storing one or more instructions adapted to be loaded by a processor and execute the signal processing method of the second aspect and any possible implementation manner thereof.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of a V2X system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a signal processing apparatus 300 according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a signal processing apparatus 400 according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a signal processing apparatus 500 according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a signal processing apparatus 600 according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a signal processing apparatus 700 according to an embodiment of the present disclosure;
fig. 8 is a flowchart of a signal processing method according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The signal processing device provided by the application can be applied to a V2X system, a microwave communication system, a satellite communication system or other long-distance communication systems. The following description will be given by taking an example in which the signal processing device is applied to a V2X system.
Referring to fig. 1, fig. 1 is a schematic diagram of a V2X system according to an embodiment of the present disclosure. In the field of vehicle communication, V2X technology is directed to achieving low-latency, high-reliability communication between high-speed devices, between a high-speed device and a low-speed device, or between a high-speed device and a stationary device. Where X may represent a vehicle, a pedestrian, a road facility, a network, or the like, i.e., V2X may include vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, or the like.
It should be noted that in V2V communication, any vehicle may include a signal processing device. The signal processing device may be an in-vehicle device, a desktop computer, a server, a device in self-driving (self-driving), or the like. Optionally, the signal processing device may also be a tablet computer (Pad), a Mobile Internet Device (MID), a notebook computer, a palm computer, or the like, and the form of the signal processing device is not limited in the present application.
In the V2P communication, a signal processing device on the vehicle can communicate with an electronic device of a pedestrian. The electronic device of the pedestrian may be the signal processing device, or may be other devices, such as a mobile phone, a wearable device, or a computer carried by the pedestrian, which is not limited in the present application. Alternatively, the form of the devices (e.g., the signal processing device and the electronic device) that communicate with each other may be the same or different.
In V2I communication, a signal processing device on a vehicle can communicate with an electronic device on a road facility. The electronic device located on the road infrastructure may be a Road Side Unit (RSU), the RSU is an infrastructure entity supporting the V2X application, and the RSU may perform information interaction with other devices supporting the V2X communication.
In the V2N communication, the signal processing apparatus on the vehicle can communicate with the server each other. The server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, and a cloud server for providing basic cloud computing services such as cloud service, a cloud database, a big data and artificial intelligence platform and the like. Optionally, the server may also be a server in a network device, so as to configure V2X resources for each signal processing device and other electronic devices in the V2X system, so that each signal processing device and other electronic devices can communicate with each other. The network device is an entity for transmitting or receiving signals on the network side. For example, the network device may be an evolved NodeB (eNB), a transmission point (TRP), a next generation base station (gNB) in the NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.
It should be further noted that the technical solutions of the embodiments of the present application may be applied to various communication systems. For example: a Long Term Evolution (LTE) system, a 5th generation (5G) mobile communication system, and a 5G New Radio (NR) system. Optionally, the method of the embodiment of the present application is also applicable to various future communication systems, for example, a 6G system or other communication networks.
As shown in fig. 2, a schematic configuration diagram of a signal processing apparatus is shown. The signal processing device may be an in-vehicle device, a microwave device, or a satellite communication device. The signal processing device may include a signal processing apparatus, which may include a processing module and an antenna module. It will be understood by those skilled in the art that the schematic structural diagram shown in fig. 2 does not constitute a limitation of the signal processing apparatus, and the signal processing apparatus may include more or less components than those shown, or combine some components, or arrange different components, and the present application is not limited thereto.
Optionally, the signal processing apparatus may further include a memory to store a software program and various data, an interface unit to connect to other external devices, sensors (e.g., a light sensor, a motion sensor, a pressure sensor, etc.), and the like. Optionally, the signal processing device may further comprise a power source (such as a battery) for powering the various components. The power supply can be logically connected with the signal processing device through the power supply management system, so that the functions of managing charging, discharging, power consumption management and the like are realized through the power supply management system.
In some embodiments, the "processing module", "antenna module", and "control module" are only names used in the embodiments of the present application, and the names do not limit the embodiments of the present application. Alternatively, the "processing module" may also be referred to as a "processor" or "CPU" or "OBU box" or the like; "antenna module" may also be referred to as "radio frequency unit" or "radio frequency line"; the "control module" may also be referred to as a "Micro Controller Unit (MCU)", "single-chip microcomputer" or "single-chip microcomputer", and the application is not limited thereto.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a signal processing apparatus 300 according to an embodiment of the present disclosure, the signal processing apparatus including: a processing module 31 and an antenna module 32, wherein the processing module 31 is connected with the antenna module 32.
In this application, the processing module 31 may be configured to generate and output a high frequency signal, perform mixing processing on the high frequency signal to obtain a low frequency signal, and input the low frequency signal to the antenna module 32 through a connection line between the processing module 31 and the antenna module 32. For example, the processing module 31 may be an OBU box in a V2X system. The processing module 31 includes a control module 311 and a first mixer 312, and the control module 311 is connected to the first mixer 312. The control module 311 may be used to generate and output a high frequency signal, for example, the control module 311 may include a MCU, an Application Process (AP), a Modem (Modem), and the like. The control module 311 inputs the output high frequency signal to the first mixer 312 through a connection line between the control module 311 and the first mixer 312. The first mixer 312 may be configured to, when receiving the high frequency signal from the control module 311, perform mixing processing on the high frequency signal, such as performing frequency down-conversion processing on the high frequency signal to obtain a low frequency signal, and output the low frequency signal.
In one implementation, the control module 311 sends a first high frequency signal to the first mixer 312. Accordingly, the first mixer 312 may receive the first high frequency signal. The first high frequency signal may be a high frequency signal generated and output by the control module 311. The first high frequency signal may be a higher frequency signal, for example the frequency of the first high frequency signal may be 5.9 ghz. Specifically, the control module 311 may generate a first high frequency signal and output the first high frequency signal from the high frequency signal output port 3111 of the control module 311.
In one implementation, the first mixer 312 generates a first local oscillator signal, and mixes the first high frequency signal and the first local oscillator signal to obtain a low frequency signal. The first local oscillation signal may be a signal with stable frequency generated by the local oscillator of the first mixer 312, and the first local oscillation signal may be used for the first mixer 312 to perform frequency mixing, frequency doubling, frequency division, or the like. The low frequency signal may be an output signal of a low frequency after the first high frequency signal is down-converted by the first mixer 312. The low frequency signal may be a lower frequency signal, which may be lower or much lower in frequency than the first high frequency signal; the frequency of the low frequency signal may be 400 mhz, for example.
Specifically, the first input port of the first mixer 312 is connected to the high-frequency signal output port 3111 of the control module 311. When the first input port of the first mixer 312 receives the first high frequency signal from the high frequency signal output port 3111, the first high frequency signal may be mixed with the generated first local oscillation signal to obtain a low frequency signal, and the low frequency signal may be output from the output port of the first mixer 312.
In this application, the antenna module 32 may receive the low frequency signal sent by the processing module 31, perform mixing processing on the low frequency signal to obtain a high frequency signal, and output the high frequency signal. The frequency of the high-frequency signal output by the antenna module 32 may be the same as or different from the frequency of the high-frequency signal generated and output by the processing module 31, which is not limited in the present application. The antenna module 32 comprises a second mixer 321 and an antenna port 322, the second mixer 321 being connected to the antenna port 322. The second mixer 321 may be configured to, when receiving the low-frequency signal from the first mixer 312, perform mixing processing on the low-frequency signal, for example, perform frequency boosting processing on the low-frequency signal to obtain a high-frequency signal, and output the high-frequency signal. The second mixer 321 inputs the output high frequency signal to the antenna port 322 through a connection line between the second mixer 321 and the antenna port 322. The antenna port 322 may be used to output the high frequency signal from the second mixer 321 when receiving the high frequency signal.
In the present application, the first mixer 312 is connected to the second mixer 321. Specifically, the output port of the first mixer 312 is connected to the first input port of the second mixer 321. The first mixer 312 inputs a low frequency signal from an output port of the first mixer 312 to a first input port of the second mixer 321 through a connection line between the first mixer 312 and the second mixer 321; accordingly, the first input port of the second mixer 321 receives the low frequency signal.
In one implementation, the second mixer 321 generates a second local oscillation signal, mixes the low frequency signal with the second local oscillation signal to obtain a second high frequency signal, and sends the second high frequency signal to the antenna port 322. The second local oscillator signal may be a signal with stable frequency generated by the local oscillator of the second mixer 321, and the second local oscillator signal may be used for the second mixer 321 to perform frequency mixing, frequency multiplication, frequency division, or the like. It should be noted that, the frequency of the second local oscillator signal may be the same as or different from that of the first local oscillator signal, and this application is not limited thereto. The second high frequency signal may be a high frequency signal that is up-converted by the second mixer 321 according to the low frequency signal and the second local oscillator signal, and the second high frequency signal may be a high frequency signal output by the signal processing device. The frequency of the second high frequency signal may be the same as the frequency of the first high frequency signal, or may be different from the frequency of the first high frequency signal, which is not limited in this application.
Specifically, the output port of the second mixer 321 is connected to the antenna port 322. The second mixer 321 may transmit the second high frequency signal from the output port of the second mixer 321 to the antenna port 322 through a connection line between the second mixer 321 and the antenna port 322. Accordingly, the antenna port 322 may receive the second high frequency signal and output the second high frequency signal.
In the present application, the first high frequency signal is down-converted by the first mixer 312, so as to obtain a low frequency signal with a lower frequency, so that the power loss can be reduced in the process of transmitting the low frequency signal from the processing module 31 to the antenna module 32; the low-frequency signal is up-converted by the second mixer 321 to obtain a second high-frequency signal with a higher frequency, so that the second high-frequency signal transmitted from the second mixer 321 to the antenna port 322 can maintain the original frequency as much as possible.
Optionally, fig. 4 provides a schematic structural diagram of a signal processing apparatus 400. As shown in fig. 4, the antenna module further includes a first switch 401, and the first switch 401 includes a first switch port 4011 and a second switch port 4012. The first switch 401 may be a single-pole double-throw switch. The first switch 401 may be configured to provide two different connection modes for the second mixer 321, for example, an output port of the second mixer 321 may be connected to the antenna port 322 through the first switch port 4011, or an output port of the second mixer 321 may be connected to the control module 311 through the second switch port 4012, so as to establish two different paths for the second mixer 321 to transmit the second high-frequency signal. The two paths may specifically be as follows:
the first path is: the second mixer 321 transmits the second high frequency signal to the antenna port 322 through the first switch port 4011 of the first switch 401. Specifically, the output port of the second mixer 321 transmits a second high-frequency signal to the first switch port 4011, and the first switch port 4011 may transmit the second high-frequency signal to the antenna port 322 when receiving the second high-frequency signal. Accordingly, the antenna port 322 may receive the second high frequency signal from the second mixer 321 through the first switch port 4011 and output the second high frequency signal through the antenna port 322.
A second path: the second mixer 321 sends the second high frequency signal to the control module 311 through the second switch port 4012 of the first switch 401. Specifically, the output port of the second mixer 321 sends a second high-frequency signal to the second switch port 4012, and the second switch port 4012 may send the second high-frequency signal to the control module 311 when receiving the second high-frequency signal. Accordingly, the control module 311 may receive the second high frequency signal from the second mixer 321 through the second switch port 4012 and measure the power of the second high frequency signal.
Optionally, the control module 311 may include a power measurement port 3112, and the power measurement port 3112 is connected to the second switch port 4012. Specifically, the control module 311 may receive the second high-frequency signal transmitted by the second switch port 4012 through the power measurement port 3112. Optionally, the power measurement port 3112 may be a transmit signal detection (TX _ det) port, that is, the control module 311 may receive the second high frequency signal through the TX _ det port.
In one implementation, the control module 311 may derive the adjustment signal after measuring the power of the second high frequency signal. The adjusting signal may be configured to adjust an amplitude of the local oscillator signals (such as the first local oscillator signal and the second local oscillator signal). The control module 311 may send the adjustment signal to the first mixer 312; accordingly, the first mixer 312 may receive the adjustment signal and adjust the amplitude of the first local oscillator signal according to the adjustment signal. The control module 311 may send the adjustment signal to the second mixer 321; accordingly, the second mixer 321 may receive the adjustment signal and adjust the amplitude of the second local oscillator signal according to the adjustment signal.
Optionally, the control module 311 may include an adjustment signal output port 3113, the adjustment signal output port 3113 is connected to the second input port of the first mixer 312, and the adjustment signal output port 3113 is connected to the second input port of the second mixer 321. Specifically, the control module 311 may send the adjustment signal to the second input port of the first mixer 312 through the adjustment signal output port 3113, and send the adjustment signal to the second input port of the second mixer 321. Optionally, the adjustment signal output port 3113 may be a transmission signal control (TX _ ctr) port, that is, the control module may send the adjustment signal through the TX _ ctr port. It should be noted that the adjustment signal may be a ctr signal, which is not limited in this application.
In this application, the second mixer 321 sends the second high-frequency signal to the control module 311 through the second switch port 4012, so that the control module 311 can measure the power of the second high-frequency signal, and adjust the amplitude of the local oscillation signal according to the power of the second high-frequency signal, so that the first mixer 312 and the second mixer 321 can obtain a better mixing effect according to the adjusted local oscillation signal.
Optionally, fig. 5 provides a schematic structural diagram of a signal processing apparatus 500. As shown in fig. 5, the processing module 31 further includes a low frequency power amplifier 501, and the low frequency power amplifier 501 is connected to the first mixer 312. The low-frequency power amplifier 501 may be configured to amplify the power of the low-frequency signal to achieve high-power output. Specifically, the output port of the first mixer 312 is connected to the first input port of the low frequency power amplifier 501. In one implementation, the first mixer 312 mixes the first high frequency signal and the first local oscillator signal to obtain a reference low frequency signal, and sends the reference low frequency signal to the first input port of the low frequency power amplifier 501 through the output port of the first mixer 312. Accordingly, the low frequency power amplifier 501 receives the reference low frequency signal from the first input port.
If a high-frequency signal (e.g., the first high-frequency signal) is power-amplified, a high-frequency power amplifier with higher device cost needs to be used to compensate for the power loss. In the present application, after the first high-frequency signal is mixed by the first mixer 312, a low-frequency signal is obtained, and power amplification of the low-frequency signal can be easily achieved by the low-frequency power amplifier 501, so that device cost is reduced, and difficulty in implementing power amplification is reduced.
Optionally, the low frequency power amplifier 501 may also be connected to the control module 311. Specifically, the adjustment signal output port 3113 of the control module 311 is connected to the second input port of the low frequency power amplifier 501.
In one implementation, the control module 311 sends the adjustment signal to the second input port of the low frequency power amplifier 501 through the adjustment signal output port 3113. Accordingly, the low frequency power amplifier 501 receives the adjustment signal from the second input port to amplify the power of the reference low frequency signal according to the adjustment signal, so as to obtain the low frequency signal.
It should be noted that the adjustment signal may also adjust the gain of the low frequency power amplifier 501. For example, if the power of the low-frequency signal after power amplification by the low-frequency power amplifier 501 is smaller than the minimum threshold, the gain of the low-frequency power amplifier 501 may be increased according to the adjustment signal; if the power of the low-frequency signal after power amplification by the low-frequency power amplifier 501 is greater than the maximum threshold, the gain of the low-frequency power amplifier 501 may be reduced according to the adjustment signal. The minimum threshold and the maximum threshold may be set, which is not limited in this application.
Optionally, the low frequency power amplifier 501 may be further connected to a second mixer 321. Specifically, the output port of the low frequency power amplifier 501 is connected to the input port of the second mixer 321.
In one implementation, the low frequency power amplifier 501 sends the low frequency signal to the input port of the second mixer 321 through the output port; accordingly, the second mixer 321 receives the low frequency signal from the input port, and performs a mixing process according to the low frequency signal and the second local oscillator signal.
Optionally, fig. 6 provides a schematic structural diagram of a signal processing apparatus 600. As shown in fig. 6, the antenna module 32 further includes a second switch 601, and the second switch 601 includes a third switch port 6011 and a fourth switch port 6012. Wherein, the second switch 601 can be a single-pole double-throw switch. The second switch 601 may be used to provide two different connection modes for the antenna port 322, so that the antenna port 322 may be connected to the second mixer 321 through the third switch port 6011, or so that the antenna port 322 may be connected to the control module 311 through the fourth switch port 6012, thereby providing two different paths for signals passing through the antenna port 322. The two paths may be used for transmitting an output signal and an input signal (such as the first input signal) respectively, and specifically may be as follows:
an output path: the second mixer 321 transmits the second high frequency signal to the antenna port 322 through the third switch port 6011. Specifically, the output port of the second mixer 321 may transmit the second high frequency signal to the third switch port 6011 through the first switch port 4011, and the third switch port 6011 may transmit the second high frequency signal to the antenna port 322 when receiving the second high frequency signal. Accordingly, the antenna port 322 may receive the second high frequency signal from the second mixer 321 through the third switch port 6011 and output the second high frequency signal.
An input path: the antenna port 322 receives the first input signal and sends the first input signal to the control module 311 through the fourth switch port 6012. Accordingly, the control module 311 receives the first input signal from the fourth switch port 6012.
Optionally, as shown in fig. 6, the antenna module 32 further includes a third switch 602, and the third switch 602 includes a fifth switch port 6021 and a sixth switch port 6022. The third switch 602 is connected with the second switch 601; specifically, the fifth switch port 6021 of the third switch 602 is connected to the fourth switch port 6012 of the second switch 601, and the sixth switch port 6022 of the third switch 602 is connected to the fourth switch port 6012 of the second switch 601. The third switch 602 may be a single-pole double-throw switch. The third switch 602 may be used to provide two different transmission paths for the first input signal transmitted by the second switch 601.
In one implementation, the antenna port 322 may send a first input signal through the fourth switch port 6012 to the fifth switch port 6021 of the third switch 602; accordingly, the fifth switch port 6021 of the third switch 602 receives the first input signal.
In another implementation, the antenna port 322 may send a first input signal through the fourth switch port 6012 to the sixth switch port 6022 of the third switch 602; accordingly, the sixth switch port 6022 of the third switch 602 receives the first input signal.
Optionally, the antenna module 32 further includes a low noise amplifier 603, and the low noise amplifier 603 is connected to the third switch 602. Specifically, the input port of the low noise amplifier 603 is connected to the sixth switch port 6022 of the third switch 602. The low noise amplifier 603 can be used to reduce the noise figure of the input path of the signal processing apparatus, so as to maintain the sensitivity of the input signal during long-distance transmission. It should be noted that the low noise amplifier 603 may be located as close to the antenna port 322 as possible, so as to reduce the noise figure of the input path as soon as possible when receiving an input signal from the antenna port 322.
Optionally, the antenna module 32 further includes a fourth switch 604, and the fourth switch 604 includes a seventh switch port 6041 and an eighth switch port 6042. Specifically, the fifth switch port 6021 of the third switch 602 is connected to the seventh switch port 6041 of the fourth switch 604, and the seventh switch port 6041 is connected to the control module 311; the output port of the low noise amplifier 603 is connected to the eighth switch port 6042 of the fourth switch 604, and the eighth switch port 6042 is connected to the control module 311. The fourth switch 604 may be a single-pole double-throw switch. The fourth switch 604 may be configured to receive input signals on two transmission paths provided by the third switch 602, and send the input signals on the two transmission paths to the control module 311 respectively.
In one implementation, after the fifth switch port 6021 of the third switch 602 receives the first input signal, the first input signal may be transmitted through the fifth switch port 6021 to the seventh switch port 6041 of the fourth switch 604. Accordingly, the seventh switch port 6041 of the fourth switch 604 receives the first input signal and sends the first input signal to the control module 311. Accordingly, the control module 311 receives the first input signal and measures the signal strength of the first input signal to obtain a first RSSI signal.
In another implementation, after the sixth switch port 6022 of the third switch 602 receives the first input signal, the first input signal may be sent to the input port of the low noise amplifier 603 through the sixth switch port 6022. Accordingly, after receiving the first input signal, the low noise amplifier 603 performs noise factor processing on the first input signal to obtain a second input signal, and sends the second input signal to the eighth switch port 6042 through the output port of the low noise amplifier 603. Accordingly, the eighth switch port 6042 receives the second input signal and sends the second input signal to the control module 311. Accordingly, the control module 311 receives the second input signal, and measures the signal strength of the second input signal to obtain a second RSSI signal.
In one implementation, the control module 311 may compensate the second input signal according to the first RSSI signal and the second RSSI signal to obtain a third input signal. Optionally, the control module 311 further comprises an input port. Specifically, the control module 311 may receive a third input signal through the input port.
Optionally, fig. 7 provides a schematic structural diagram of a signal processing apparatus 700. As shown in fig. 7, the antenna module 32 may include a splitter 701, the splitter 701 being connected to the second switch 601. Specifically, the input port of the splitter 701 is connected to the fourth switch port 6012 of the second switch 601. Splitter 701 may be configured to split the first input signal into a plurality of paths, such that the first input signal may be transmitted on a plurality of different paths. It should be noted that two input signals (for example, referred to as input Signal 1 and input Signal 2) split by the splitter 701 may be the same, so that the two same input signals are processed differently on different paths, and are Received by the control module 311, so as to determine the RSSI of the actual input Signal according to the Received Signal Strength Indicator (RSSI) of the two input signals.
In one implementation, the antenna port 322 sends the first input signal to the input port of the splitter 701 through the fourth switch port 6012. Accordingly, the input port of the splitter 701 receives the first input signal and splits the first input signal to obtain an input signal 1 and an input signal 2. It should be noted that the splitter 701 may include two output ports (e.g., a first output port and a second output port) for transmitting the input signal 1 and the input signal 2, respectively. Specifically, a first output port of the splitter 701 is connected to the input port 1 of the control module 311; a second output port of the splitter 701 is connected to an input port of the low noise amplifier 603, and an output port of the low noise amplifier 603 is connected to the input port 2 of the control module 311.
The transmission paths of the input signal 1 and the input signal 2 are specifically as follows:
transmission path of input signal 1: splitter 701 sends input signal 1 to input port 1 of control module 311 via a first output port. Accordingly, the input port 1 of the control module 311 receives the input signal 1, and measures the signal strength of the input signal 1 to obtain a first RSSI signal.
Transmission path of input signal 2: the splitter 701 sends the input signal 2 via a second output port to the input port of the low noise amplifier 603. Accordingly, the low noise amplifier 603 receives the input signal 2 from the input port of the low noise amplifier 603, performs noise figure processing on the input signal 2 to obtain an input signal 3, and sends the input signal 3 to the input port 2 of the control module 311 through the output port of the low noise amplifier 603. Accordingly, the input port 2 of the control module 311 receives the input signal 3, and measures the signal strength of the input signal 3 to obtain a second RSSI signal.
It should be noted that the control module 311 may receive an input signal 1 through the input port 1, and receive an input signal 3 through the input port 2. Optionally, the input port 1 and the input port 2 may be the same port or different ports, which is not limited in this application. Optionally, the input port 1 and the input port 2 may be the same port as the input port for receiving the third input signal, or may be different ports, which is not limited in this application.
As can be seen from the embodiments corresponding to fig. 6 and fig. 7, the present application may provide two transmission paths for the first input signal through the third switch 602 and the fourth switch 604, and may also provide two transmission paths for the first input signal through the splitter 701. Since the third switch 602 and the splitter 701 are located before the low noise amplifier 603, and the power loss of the splitter 701 to the input path may be larger than the power loss of the third switch 602 to the input path, for example: splitter 701 may cause a 3dB power loss and third switch 602 may cause a 0.5dB power loss. Therefore, it is preferable that the third switch 602 and the fourth switch 604 are used to provide two transmission paths for the first input signal, so as to maintain the sensitivity of the input signal during long-distance transmission.
In this application, the control module 311 may obtain a first RSSI signal of the first input signal that is not subjected to noise factor processing by receiving the first input signal; by receiving the second input signal, a second RSSI signal of the second input signal subjected to noise figure processing can be obtained; therefore, the signal strength of the second input signal is supplemented according to the difference between the first RSSI signal and the second RSSI signal, so that the third input signal received by the control module 311 is more accurate.
In this embodiment, the control module 311 sends the first high-frequency signal to the first mixer 312, so that after the first mixer 312 receives the first high-frequency signal and generates the first local oscillator signal, the first high-frequency signal may be subjected to frequency reduction processing to obtain a low-frequency signal, thereby reducing power loss in the process of transmitting the low-frequency signal to the second mixer 321; after the second mixer 321 receives the low-frequency signal from the first mixer 312 and generates a second local oscillator signal, it may perform frequency up-conversion on the low-frequency signal to obtain a second high-frequency signal, and further send the second high-frequency signal to the antenna port 322, so that the second high-frequency signal sent by the antenna port 322 maintains the original frequency as much as possible.
Referring to fig. 8, fig. 8 is a flowchart of a signal processing method according to an embodiment of the present disclosure. The signal processing method can be realized by the signal processing device. The signal processing device comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first frequency mixer and the second frequency mixer; the second mixer is connected with the antenna port; the first mixer is connected to the second mixer. The signal processing apparatus may be configured in a signal processing device, and the signal processing apparatus may be configured to reduce power consumption. As shown in fig. 8, the signal processing method includes, but is not limited to, the following steps S801 to S803.
S801, mixing a first high-frequency signal and a first local oscillator signal to obtain a low-frequency signal;
s802, mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal;
s803, the second high frequency signal is transmitted through the antenna port.
It should be noted that the embodiment corresponding to fig. 8 is based on the same concept as the embodiment of the signal processing apparatus, and the technical effects thereof are also the same.
In the embodiment of the application, a low-frequency signal with a frequency lower than that of a first high-frequency signal can be obtained by mixing the first high-frequency signal and a first local oscillator signal, so that power loss is reduced in the process of transmitting the first high-frequency signal from a processing module to an antenna module; by mixing the low-frequency signal and the second local oscillator signal, a second high-frequency signal with a frequency higher than that of the low-frequency signal can be obtained, so that the original frequency of the second high-frequency signal sent from the antenna port can be kept as much as possible.
The embodiment of the present application further provides a computer-readable storage medium, in which one or more instructions are stored, and the one or more instructions are adapted to be loaded by a processor and execute the method provided by the foregoing method embodiment.
Embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to perform the method provided by the above method embodiments.
Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit. For example, each module/unit included in each apparatus or product applied to or integrated in a chip may all be implemented by hardware such as a circuit, or at least a part of the modules/units may be implemented by a software program, where the software program runs on an integrated processor inside the chip, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same piece (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated inside the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device or product applied to or integrated in the terminal, the modules/units included in the device or product may all be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some of the modules/units may be implemented by software programs running on a processor integrated in the terminal, and the rest (if any) of the modules/units may be implemented by hardware such as a circuit.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art will recognize that the embodiments described in this specification are preferred embodiments and that acts or modules referred to are not necessarily required for this application.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, which may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The descriptions of the embodiments provided in the present application may refer to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A signal processing apparatus, characterized in that the signal processing apparatus comprises: the antenna system comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer;
the control module is used for sending a first high-frequency signal to the first mixer;
the first frequency mixer is configured to generate a first local oscillator signal, mix the first high-frequency signal and the first local oscillator signal to obtain a low-frequency signal, and send the low-frequency signal to the second frequency mixer;
the second mixer is configured to generate a second local oscillator signal, mix the low-frequency signal and the second local oscillator signal to obtain a second high-frequency signal, and send the second high-frequency signal to the antenna port;
the antenna port is configured to output the second high-frequency signal.
2. The signal processing apparatus of claim 1, wherein the antenna module further comprises a first switch, the first switch comprising a first switch port and a second switch port, the second mixer being connected to the first switch port, the first switch port being connected to the antenna port; the second mixer is connected with the second switch port, the second switch port is connected with the control module, and the control module is connected with the second mixer;
the second mixer is configured to, when sending the second high-frequency signal to the antenna port, specifically, send the second high-frequency signal to the antenna port through the first switch port;
the second mixer is further configured to send the second high-frequency signal to the control module through the second switch port;
the control module is further configured to measure the power of the second high-frequency signal to obtain an adjustment signal; sending the adjustment signal to the first mixer; sending the adjustment signal to the second mixer;
the first mixer is further configured to adjust an amplitude of the first local oscillator signal according to the adjustment signal;
the second mixer is further configured to adjust an amplitude of the second local oscillator signal according to the adjustment signal.
3. The signal processing apparatus of claim 1, wherein the control module comprises a high frequency signal output port and an adjustment signal output port; the high-frequency signal output port is used for transmitting the first high-frequency signal to the first mixer; and the adjusting signal output port is used for sending the adjusting signal to the first mixer and sending the adjusting signal to the second mixer.
4. The signal processing apparatus of claim 1, wherein the antenna module further comprises a second switch, the second switch comprising a third switch port and a fourth switch port, the antenna port connected to the third switch port, the third switch port connected to the second mixer; the antenna port is connected with the fourth switch port, and the fourth switch port is connected with the control module;
the second mixer is configured to, when sending the second high-frequency signal to the antenna port, specifically, send the second high-frequency signal to the antenna port through the third switch port;
the antenna port is further configured to receive a first input signal, and send the first input signal to the control module through the fourth switch port.
5. The signal processing apparatus of claim 4, wherein the antenna module further comprises a third switch comprising a fifth switch port and a sixth switch port, a fourth switch comprising a seventh switch port and an eighth switch port, and a low noise amplifier; the fourth switch port is connected with the fifth switch port, the fifth switch port is connected with the seventh switch port, and the seventh switch port is connected with the control module; the fourth switch port is connected with the sixth switch port, the sixth switch port is connected with the input port of the low noise amplifier, the output port of the low noise amplifier is connected with the eighth switch port, and the eighth switch port is connected with the control module;
the antenna port is specifically configured to send the first input signal to the fifth switch port through the fourth switch port; the fifth switch port is configured to send the first input signal to the seventh switch port; the seventh switch port is configured to send the first input signal to the control module;
the antenna port is specifically configured to send the first input signal to the sixth switch port through the fourth switch port; the sixth switch port is configured to send the first input signal to the input port of the low noise amplifier;
the low noise amplifier is configured to perform noise coefficient processing on the first input signal to obtain a second input signal, and send the second input signal to the eighth switch port through an output port of the low noise amplifier; the eighth switch port is configured to send the second input signal to the control module;
the control module is configured to receive the first input signal from the seventh switch port, and measure the signal strength of the first input signal to obtain a first Received Signal Strength Indicator (RSSI) signal; receiving the second input signal from the eighth switch port, and measuring the signal strength of the second input signal to obtain a second RSSI signal; and compensating the second input signal according to the first RSSI signal and the second RSSI signal to obtain a third input signal.
6. The signal processing apparatus of claim 5, wherein the control module further comprises an input port for receiving the third input signal.
7. The signal processing apparatus of claim 1, wherein the processing module further comprises a low frequency power amplifier, an output port of the first mixer is connected to a first input port of the low frequency power amplifier, and an output port of the low frequency power amplifier is connected to an input port of the second mixer; the control module is connected with a second input port of the low-frequency power amplifier;
the first mixer is specifically configured to mix the first high-frequency signal and the first local oscillator signal to obtain a reference low-frequency signal, and send the reference low-frequency signal to a first input port of the low-frequency power amplifier;
the low-frequency power amplifier is configured to amplify the power of the reference low-frequency signal according to the adjustment signal to obtain the low-frequency signal, and send the low-frequency signal to the second mixer.
8. A signal processing method applied to a signal processing apparatus, the signal processing apparatus comprising: the antenna system comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer, and the control module is connected with the second mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer;
mixing the first high-frequency signal and the first local oscillation signal to obtain a low-frequency signal;
mixing the low-frequency signal and a second local oscillator signal to obtain a second high-frequency signal;
transmitting the second high frequency signal through the antenna port.
9. A signal processing device characterized in that it comprises a signal processing apparatus according to any one of claims 1-7.
10. A computer-readable storage medium having stored thereon one or more instructions adapted to be loaded by a processor and to perform the method of claim 8.
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