CN115001603A - Sensitivity detection method, device, medium, circuit, equipment and system - Google Patents
Sensitivity detection method, device, medium, circuit, equipment and system Download PDFInfo
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Abstract
The disclosure relates to a method, a device, a medium, a circuit, a device and a system for detecting sensitivity, wherein the method for detecting sensitivity of a receiving channel comprises the following steps: acquiring a main input signal and a noise input signal output by a detection device; carrying out frequency conversion and demodulation processing on the main input signal and the noise input signal and then outputting a main output signal and a noise output signal; determining a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal. According to the technical scheme, when the sensitivity of the receiving channel is detected, a professional detection device is not needed, and a professional person is not needed to detect, so that the time cost, the labor cost and the instrument cost of the sensitivity detection of the receiving channel are greatly reduced.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a medium, a circuit, a device, and a system for detecting sensitivity.
Background
At present, the radio frequency performance of the mobile terminal needs to meet the requirements of various radio frequency conformance specifications, such as the requirements of 3GPP specifications, operator regulations, and the like. The sensitivity of the receiving path, which is the most important index in the receiving path, must be tested and satisfied in various radio frequency conformance specifications.
In the prior art, the sensitivity of the receiving path is obtained by establishing a signaling connection between a detection instrument and a mobile terminal in a manual mode and by means of manual detection. This method of acquiring the sensitivity of the receiving path by manual detection not only requires the detecting instrument to have a signaling function, but the detecting instrument with a signaling function is usually more expensive than the ordinary instrument, which increases the cost of detecting the sensitivity of the receiving path. And the testing needs to be completed manually, resulting in longer testing time and lower testing efficiency. Meanwhile, the mode and frequency band of the mobile terminal include various types, for example, a 5G mobile terminal supports a 5 mode 30 frequency, and one frequency band in a 4G network and a Multiple Input Multiple Output (MIMO) system at present at least includes 2 to 4 receiving paths, so that the number of the receiving paths of the whole mobile terminal can reach at least 50. If the manual test method is used to detect the sensitivity of the receiving paths corresponding to all the receiving paths, each mobile terminal needs 33 minutes to complete the sensitivity test of the receiving paths according to the average 40 seconds of each path. This requires a large investment in time and labor costs when mass-producing mobile terminals.
Therefore, in the prior art, the sensitivity of the receiving path corresponding to each receiving path of a prototype can be debugged to a reasonable level only in the product development stage, and the index of the sensitivity of the receiving path of the mobile terminal cannot be tested in batch. When the mobile terminal is produced in a large scale, the devices on the radio frequency path often have the problems of poor mounting, insufficient soldering and the like, so that the mobile terminal cannot necessarily meet the requirements of relevant radio frequency consistency specifications when leaving a factory.
Disclosure of Invention
In order to solve the technical problem, the present disclosure provides a method, an apparatus, a medium, a circuit, a device, and a system for detecting sensitivity.
The present disclosure provides a method for detecting sensitivity of a receiving channel, including:
acquiring a main input signal and a noise input signal output by a detection device;
carrying out frequency conversion and demodulation processing on the main input signal and the noise input signal and then outputting a main output signal and a noise output signal;
determining a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal.
In some embodiments, said determining a receive path sensitivity based on said primary input signal, said noise input signal, said primary output signal, and said noise output signal comprises:
acquiring the power of the main input signal and the power of the noise input signal;
determining a ratio of the power of the main input signal and the power of the noise input signal as an input signal-to-noise ratio;
acquiring the power of the main output signal and the power of the noise output signal;
determining a ratio of the power of the main output signal and the power of the noise output signal as an output signal-to-noise ratio;
determining the receive path sensitivity based on the input signal-to-noise ratio and the output signal-to-noise ratio.
In some embodiments, said determining said receive path sensitivity based on said input signal-to-noise ratio and said output signal-to-noise ratio comprises determining said receive path sensitivity based on the following equation:
wherein, SNrin is the signal-to-noise ratio of the input signal, SNrout is the signal-to-noise ratio of the output signal, P is the sensitivity of the receiving channel, and k is a constant.
In some embodiments, before the acquiring the main input signal and the noise input signal output by the detection device, the method includes:
and adjusting the gain value of the receiving path to be more than or equal to a preset value.
In some embodiments, further comprising: and repeatedly executing the steps to acquire the receiving channel sensitivity of a plurality of receiving channels.
The present disclosure also provides a detection apparatus for receiving channel sensitivity, including:
the signal receiving unit is used for acquiring a main input signal and a noise input signal output by the detection device;
the signal processing unit is used for carrying out frequency conversion and demodulation processing on the main input signal and the noise input signal and then outputting a main output signal and a noise output signal;
a receive path sensitivity determination unit to determine a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal.
The present disclosure also provides a computer-readable storage medium storing a computer program, wherein the computer program is configured to implement any one of the methods provided by the present disclosure when executed by a processor.
The present disclosure also provides a radio frequency circuit, comprising: the computer program product comprises a memory, a processor and a program stored on the memory and executable on the processor, wherein the program when executed by the processor implements the steps defined by any one of the methods provided by the present disclosure.
The present disclosure also provides an electronic device including the radio frequency circuit provided by the present disclosure.
The disclosure also provides a system for detecting the sensitivity of a receiving channel, which includes a detecting device and the electronic apparatus of the disclosure;
the detection device is electrically connected with the electronic equipment; the detection device is used for outputting a main input signal and a noise input signal to the electronic equipment.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the technical scheme provided by the embodiment of the disclosure, the main input signal and the noise input signal output by the detection device are obtained, then the main output signal and the noise output signal are output after the frequency conversion and demodulation processing is carried out on the main input signal and the noise input signal, and the sensitivity of a receiving channel is determined based on the main input signal, the noise input signal, the main output signal and the noise output signal. Therefore, the detection device does not need to be provided with a signaling function, and can automatically and quickly calculate the sensitivity of the receiving channel only by analyzing the main input signal, the noise input signal, the main output signal and the noise output signal. When the sensitivity of the receiving channel is detected, a professional detection device is not needed, and a professional person is not needed to detect, so that the time cost, the labor cost and the instrument cost of the sensitivity detection of the receiving channel are greatly reduced.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for detecting sensitivity of a receive path according to an embodiment of the present disclosure;
fig. 2 is a block diagram of a detection apparatus for receiving channel sensitivity according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a hardware structure of a radio frequency circuit according to an embodiment of the disclosure;
fig. 4 is a schematic diagram of another hardware structure of the rf circuit according to the embodiment of the disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 is a schematic flow chart of a method for detecting sensitivity of a receive path according to an embodiment of the present disclosure, and as shown in fig. 1, the method includes the following steps:
step S110: and acquiring a main input signal and a noise input signal output by the detection device.
Step S120: and performing frequency conversion and demodulation processing on the main input signal and the noise input signal and outputting a main output signal and a noise output signal.
The frequency conversion processing is performed on the main input signal and the noise input signal, for example, the main input signal and the noise input signal may be subjected to frequency reduction processing to obtain corresponding frequency conversion signals. The signal after the frequency conversion is demodulated, for example, after the signal after the frequency conversion is subjected to analog-to-digital conversion and digital signal processing, the signal after the frequency conversion is demodulated, and a corresponding main output signal and a corresponding noise output signal are output.
Step S130: the receive path sensitivity is determined based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal.
In the related art, a detection device provided with a signaling function is generally used to detect the sensitivity of a reception channel. A professional operation is required to establish a signaling connection between the detection device and the mobile terminal. After the signaling connection is established between the detection device and the mobile terminal, the detection device continuously sends detection signals to the mobile terminal, after the mobile terminal receives the detection signals, the detection signals are coded and then fed back to the detection device, and the detection device calculates BER parameters. Ber (bit Error ratio) is the bit Error probability, which is the number of erroneous bits divided by the total number of transmitted bits during a certain time interval, usually expressed in percentage. In digital transmission, the number of bit errors is the number of received bits of a data stream on a communication channel that are altered due to noise, interference, distortion, or bit synchronization errors. When the BER parameter value reaches a preset threshold value, determining the frequency of the signal sent by the detection device at the moment as the sensitivity of a receiving channel.
Therefore, in the related art, the detection device is required to continuously send a detection signal to the mobile terminal, and when the BER parameter value reaches a preset threshold value, the frequency of the signal sent by the detection device at this time is determined as the sensitivity of the receiving path. Therefore, the method for detecting the sensitivity of the receiving path in the related art is complicated, and the time for calculating the sensitivity of the receiving path of one receiving path is long. Meanwhile, the mobile terminal needs to feed back the coded signal to the detection device, so the mobile terminal must be provided with a signaling function, otherwise, the mobile terminal and the detection device cannot transmit the signal. Both the mobile terminal and the detection device need to be equipped with signaling functions, which increases the cost of the mobile terminal and the detection device. According to the technical scheme provided by the embodiment of the disclosure, the main input signal and the noise input signal output by the detection device are obtained, then the main input signal and the noise input signal are subjected to frequency conversion processing and demodulation processing and then output the main output signal and the noise output signal, and the sensitivity of a receiving path is determined based on the power of the main output signal, the power of the noise output signal and the signal-to-noise ratio of the input signal. Therefore, the detection device does not need to be provided with a signaling function, and can automatically and quickly calculate the sensitivity of a receiving channel only by analyzing the power of the main output signal, the power of the noise output signal and the change of the signal-to-noise ratio of the input signal. When the sensitivity of the receiving channel is detected, a professional detection device is not needed, and a professional person is not needed to detect, so that the time cost, the labor cost and the instrument cost of the sensitivity detection of the receiving channel are greatly reduced.
In some embodiments, step S130: determining the receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal, for example, includes:
the power of the main input signal and the power of the noise input signal are obtained.
The ratio of the power of the main input signal to the power of the noisy input signal is determined as the input signal-to-noise ratio.
The power of the main output signal and the power of the noise output signal are obtained.
The ratio of the power of the main output signal and the power of the noise output signal is determined as the output signal to noise ratio.
The receive path sensitivity is determined based on the input signal-to-noise ratio and the output signal-to-noise ratio.
Since the input signal to noise ratio is the ratio of the power of the main input signal to the power of the noisy input signal. It is therefore possible to first obtain the power of the main input signal and the power of the noisy input signal and then determine the input signal-to-noise ratio based on the ratio between the two.
In some embodiments, the power of the primary input signal is P Sin Power of the noisy input signal is P Nin And the input signal-to-noise ratio is SNRin, the input signal-to-noise ratio SNRin satisfies the following relation:
according to the technical scheme provided by the embodiment of the disclosure, the signal-to-noise ratio of the input signal can be determined based on the power of the main input signal and the power of the noise input signal, and the calculation method is simple and easy to implement.
Since the output signal to noise ratio is the ratio of the power of the main output signal to the power of the noisy output signal. The output signal to noise ratio can therefore be determined based on the ratio between the power of the main output signal and the power of the noise output signal after the acquisition. Since the receive path sensitivity is related to the ratio between the input signal-to-noise ratio and the output signal-to-noise ratio, the receive path sensitivity can be determined based on the input signal-to-noise ratio and the output signal-to-noise ratio.
In some embodiments, the primary output signal has a power of P Sout Power of the noise output signal is P Nout And if the output signal-to-noise ratio is SNRout, the output signal-to-noise ratio SNRout meets the following relational expression:
according to the technical scheme provided by the embodiment of the disclosure, the signal-to-noise ratio of the output signal can be determined based on the power of the main output signal and the power of the noise output signal. And provides a calculation method for calculating the sensitivity of the receiving path, which can easily determine the sensitivity of the receiving path based on the signal-to-noise ratio of the input signal and the signal-to-noise ratio of the output signal, and has simple calculation method and easy realization.
In some embodiments, the input signal-to-noise ratio may be, for example, a preset signal-to-noise ratio.
When the input signal-to-noise ratio is the preset signal-to-noise ratio, the input signal-to-noise ratio is the ratio of the power of the main input signal to the power of the noise input signal. The power of the main input signal and the power of the noisy input signal can thus be determined on the basis of the input signal-to-noise ratio, which facilitates the simple determination of the power of the signal to be emitted by the detection means for detecting the sensitivity of the receiving path on the basis of the frequency band that can be received by the receiving path and a predetermined signal-to-noise ratio. Meanwhile, the signal-to-noise ratio of the input signal is set as the preset signal-to-noise ratio, so that the complexity of the sensitivity calculation of the receiving channel can be simplified, and the sensitivity of the receiving channel can be calculated only by determining the signal-to-noise ratio of the output signal.
In some embodiments, the predetermined snr can be, for example, greater than or equal to 30dB, which can avoid unnecessary non-linear products and improve the accuracy of the sensitivity detection result of the receive path.
In some embodiments, the step of determining the receive path sensitivity based on the input signal to noise ratio and the output signal to noise ratio comprises determining the receive path sensitivity based on the following equation:
wherein, SNRin is the signal-to-noise ratio of the input signal, SNRout is the signal-to-noise ratio of the output signal, P is the sensitivity of the receiving channel, and k is a constant.
In some embodiments, the constant k is a parameter related to the bandwidth of the radio frequency signal and the demodulation threshold.
For example, the relationship between the input signal-to-noise ratio SNRin, the output signal-to-noise ratio SNRout, and the reception path sensitivity P satisfies:
BW is the bandwidth of the radio frequency signal, C/N is the demodulation threshold, for example, C/N is the demodulation threshold of the baseband processor. The constant k at this time satisfies the following relation:
k＝10*log(BW)+C/N-174
for a known frequency band, the bandwidth BW of the radio frequency signal is known, and the bandwidth BW of the radio frequency signal may be, for example, 5 megabytes or 20 megabytes, specifically, the bandwidth of the radio frequency signal received by the receiving path when calculating the actual receiving path sensitivity is taken as the reference, which is not limited in this embodiment of the disclosure. The demodulation threshold C/N is also known, for example for a network of mobile terminals 4G, which is typically-1 dB.
In some embodiments, the ratio between the input signal-to-noise ratio and the output signal-to-noise ratio is the equivalent noise figure of the entire receive path. Therefore, the reception path sensitivity can be determined based on the equivalent noise figure of the reception path. The equivalent noise figure of the receiving path can be obtained by determining the ratio between the input signal-to-noise ratio and the output signal-to-noise ratio.
In some embodiments, at step S110: before acquiring the main input signal and the noise input signal output by the detection device, for example, the method includes: and adjusting the gain value of the receiving path to be more than or equal to a preset value.
The preset value may be set according to a circuit structure of the receiving path, for example, and the disclosure is not limited thereto.
According to the technical scheme provided by the embodiment of the disclosure, the maximum value of the signal power which can be received by the receiving path can be controlled by adjusting the gain value of the receiving path, and the gain value of the receiving path is adjusted to be greater than or equal to the preset value, so that the receiving path can be ensured to receive the main input signal and the noise input signal sent by the detection device.
In some embodiments, the method for detecting the sensitivity of the receive path further includes, for example: the above steps are repeatedly executed, and the receiving path sensitivities of a plurality of receiving paths are obtained.
For example, the mobile terminal includes a plurality of receiving paths, and the sensitivity of each receiving path needs to be detected, for example, the following steps may be repeatedly performed: acquiring a main input signal and a noise input signal output by a detection device; carrying out frequency conversion and demodulation processing on the main input signal and the noise input signal and then outputting a main output signal and a noise output signal; the receive path sensitivity is determined based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal. The reception path sensitivities of a plurality of reception paths are sequentially acquired.
According to the technical scheme provided by the embodiment of the disclosure, the automatic detection of the sensitivity of the receiving channel can be realized, and meanwhile, the sensitivity of the receiving channel of the mobile terminal can be detected in batch.
Fig. 2 is a block diagram illustrating a structure of the apparatus for detecting sensitivity of a receiving path according to the embodiment of the present disclosure, and as shown in fig. 2, the apparatus includes a signal receiving unit 201, a signal processing unit 202, and a receiving path sensitivity determining unit 203. The signal receiving unit 201 is configured to obtain a main input signal and a noise input signal output by the detection apparatus. The signal processing unit 202 is configured to perform frequency conversion and demodulation processing on the main input signal and the noise input signal, and output a main output signal and a noise output signal. The reception path sensitivity determination unit 203 is configured to determine the reception path sensitivity based on the main input signal, the noise input signal, the main output signal, and the noise output signal.
The apparatus for detecting sensitivity of a receiving path disclosed in the above embodiments can perform the method for detecting sensitivity of a receiving path disclosed in each of the above embodiments, and has the same or corresponding beneficial effects, and in order to avoid repetition, the details are not repeated herein.
Embodiments of the present disclosure also provide a computer-readable storage medium storing a computer program, which when executed by a processor implements any one of the above methods.
Optionally, the computer program, when executed by a computer processor, may be further configured to implement a technical solution of the foregoing method for detecting sensitivity of any receiving path provided in the embodiment of the present disclosure, so as to achieve corresponding beneficial effects.
From the above description of the embodiments, it is obvious for those skilled in the art that the embodiments of the present disclosure can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better implementation in many cases. Based on such understanding, the technical solutions of the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and the like, and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, and the like) to execute the methods described in the embodiments of the present disclosure.
The embodiment of the present disclosure further provides a radio frequency circuit, including: the computer program product comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein when the program is executed by the processor, the steps defined by any one of the methods are realized, and the corresponding beneficial effects are realized.
Fig. 3 is a schematic diagram of a hardware structure of the rf circuit according to the embodiment of the disclosure. As shown in fig. 3, the radio frequency circuit includes a processor 301 and a memory 302.
The processor 301 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the radio frequency circuitry to perform desired functions.
In one example, the radio frequency circuit may further include: an input device 303 and an output device 304, which are interconnected by a bus system and/or other form of connection mechanism (not shown).
The input device 303 may also include, for example, a radio frequency test socket or the like.
The output means 304 may output various information including information of the determined sensitivity of the reception path and the like to the outside. The output means 304 may include, for example, a display, speakers, and a communication network and its connected remote output devices, among others.
Of course, for simplicity, only some of the components of the radio frequency circuitry relevant to the present disclosure are shown in fig. 3, omitting components such as buses, input/output interfaces, and the like. In addition, the radio frequency circuitry may include any other suitable components, depending on the particular application.
Exemplarily, fig. 4 is a schematic diagram of another hardware structure of the radio frequency circuit provided in the embodiment of the present disclosure. As shown in fig. 4, the rf circuit includes, for example, an rf test socket 401, a filter 402, a low noise amplifier 403, an rf transceiver 404, and a baseband processor 405 connected in series in this order. The rf test socket 401 is configured to receive a main input signal and a noise input signal output by the detection apparatus. The filter 402 and the low noise amplifier 403 are used to perform filtering and amplifying processing on the main input signal and the noise input signal, so as to improve the definition of the main input signal and the noise input signal. The radio frequency transceiver 404 is used for frequency converting the main input signal and the noise input signal. The baseband processor 405 is configured to demodulate the frequency-converted signal, output a main output signal and a noise output signal, and determine a receiving path sensitivity based on the main input signal, the noise input signal, the main output signal, and the noise output signal.
As shown in fig. 4, the radio frequency transceiver 404 includes a mixer 406, a low pass filter 407, and a phase locked loop 408. A first input of the mixer 406 is electrically connected to an output of the low noise amplifier 403. A second input of the mixer 406 is electrically connected to a phase locked loop 408. The output of the mixer 406 is electrically connected to the input of a low pass filter 407. The baseband processor 405 includes an analog-to-digital converter 409, a digital variable gain amplifier 410, and a digital signal processor 411, which are connected in series in this order. The output of the low pass filter 407 is electrically connected to the input of the analog-to-digital converter 409.
Alternatively, the memory and the processor in the radio frequency circuit may be integrally provided in the digital signal processor 411, for example.
In some embodiments, as shown in FIG. 4, the RF circuit further comprises an antenna 412, for example, and the antenna 412 is electrically connected to the input of the RF test socket 401. Antenna 412 is used to receive base station signals. The radio frequency circuit is also used for performing digital conversion processing on the received base station signal and outputting a digital signal.
In some embodiments, the gain value of the receiving path may be adjusted to be greater than or equal to a preset value, for example, by adjusting the low noise amplifier 403 and/or the digital variable gain amplifier 410.
According to the technical scheme provided by the embodiment of the disclosure, the radio frequency circuit can utilize the existing devices of the receiving channel, namely, the automatic detection of the sensitivity of the receiving channel can be realized, and the circuit has the advantages of simple structure, low cost and good applicability, and is beneficial to being realized on the terminal communication equipment with low cost and small volume.
The embodiment of the present disclosure further provides an electronic device, which includes the rf circuit according to the embodiment of the present disclosure, and has the same or corresponding beneficial effects, and in order to avoid repetition, the details are not repeated herein.
The embodiment of the disclosure further provides a system for detecting the sensitivity of a receiving channel, and the system comprises a detection device and the electronic device according to the embodiment of the disclosure. The detection device is electrically connected with the electronic equipment. The detection means is for outputting a main input signal and a noise input signal to the electronic device.
Referring to the structure of the rf circuit shown in fig. 4, the detection device is electrically connected to the rf test socket 401, for example, by an rf coaxial test line.
Illustratively, with reference to the structure of the rf circuit shown in fig. 4, the following steps are performed to detect the sensitivity of the receive path:
the detection device is connected to a radio frequency test seat of the electronic equipment through a radio frequency coaxial test wire. The detecting device simultaneously outputs a frequency f Sin Power of P Sin And a main input signal of frequency f Nin Power of P Nin The noise input signal of (2). For example, the input signal-to-noise ratio SNRin is set to 30 dB.
The receive path is then set to maximum gain mode. For example, the gain value of the receiving path may be adjusted to be equal to or greater than a predetermined value by adjusting the low noise amplifier and/or the digital variable gain amplifier. According to the frequency f of a given main input signal Sin Frequency f of the noise input signal Nin And a reference frequency f provided by a phase-locked loop LO The frequency information of (2) performs frequency conversion processing on the main input signal and the noise input signal. And the baseband processor demodulates the signals after the frequency conversion processing. Frequency f of automatic fast sampling main output signal of baseband processor Sout Frequency f of the noise output signal Nout And the power P of the corresponding main output signal Sout Power P of the noise output signal Nout And obtaining the signal-to-noise ratio SNRout of the output signal by the two power values. It is assumed here that the calculated output signal-to-noise ratio SNRout is 23 dB.
The digital signal processor in the baseband processor automatically calculates the equivalent noise coefficient NF of the receiving path, namely the ratio of the signal-to-noise ratio SNrin of the input signal to the signal-to-noise ratio SNrout of the output signal is the equivalent noise coefficient NF of the whole receiving path, and the equivalent noise coefficient NF of the receiving path satisfies the following relational expression:
the digital signal processor in the baseband processor automatically calculates the receiving path sensitivity P of the receiving path, and the receiving path sensitivity P satisfies the following relational expression:
P＝NF+10*log(BW)+C/N-174
wherein, the demodulation threshold C/N is-1 dB, so that the receiving path sensitivity P is-101 dBm when the bandwidth BW of the radio frequency signal is 5 MHz.
According to the technical scheme, a professional detection device is not required, and time cost, labor cost and instrument cost of receiving channel sensitivity detection are reduced.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for detecting sensitivity of a receive path, comprising:
acquiring a main input signal and a noise input signal output by a detection device;
performing frequency conversion and demodulation processing on the main input signal and the noise input signal and outputting a main output signal and a noise output signal;
determining a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal.
2. The method of claim 1, wherein the determining a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal comprises:
acquiring the power of the main input signal and the power of the noise input signal;
determining the ratio of the power of the main input signal and the power of the noise input signal as an input signal-to-noise ratio;
acquiring the power of the main output signal and the power of the noise output signal;
determining a ratio of the power of the main output signal and the power of the noise output signal as an output signal-to-noise ratio;
determining the receive path sensitivity based on the input signal-to-noise ratio and the output signal-to-noise ratio.
3. The method of claim 2, wherein determining the receive path sensitivity based on the input signal to noise ratio and the output signal to noise ratio comprises determining the receive path sensitivity based on the following equation:
wherein, SNrin is the signal-to-noise ratio of the input signal, SNrout is the signal-to-noise ratio of the output signal, P is the sensitivity of the receiving channel, and k is a constant.
4. The method of claim 1, wherein prior to said obtaining the primary input signal and the noise input signal output by the detection device, comprising:
and adjusting the gain value of the receiving path to be more than or equal to a preset value.
5. The method of claim 1, further comprising:
and repeatedly executing the steps to acquire the receiving channel sensitivity of a plurality of receiving channels.
6. An apparatus for detecting sensitivity of a receive path, comprising:
the signal receiving unit is used for acquiring a main input signal and a noise input signal output by the detection device;
the signal processing unit is used for carrying out frequency conversion and demodulation processing on the main input signal and the noise input signal and then outputting a main output signal and a noise output signal;
a receive path sensitivity determination unit to determine a receive path sensitivity based on the primary input signal, the noise input signal, the primary output signal, and the noise output signal.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-5.
8. A radio frequency circuit, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps defined by the method of any one of claims 1 to 5.
9. An electronic device comprising the radio frequency circuit of claim 8.
10. A detection system for sensitivity of a reception path, comprising a detection device and the electronic apparatus according to claim 9;
the detection device is electrically connected with the electronic equipment; the detection device is used for outputting a main input signal and a noise input signal to the electronic equipment.
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