CN111010243A - Radio station audio signal selectivity performance test method and test system - Google Patents
Radio station audio signal selectivity performance test method and test system Download PDFInfo
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- CN111010243A CN111010243A CN201911235776.0A CN201911235776A CN111010243A CN 111010243 A CN111010243 A CN 111010243A CN 201911235776 A CN201911235776 A CN 201911235776A CN 111010243 A CN111010243 A CN 111010243A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/327—Received signal code power [RSCP]
Abstract
The invention relates to a radio station audio signal selectivity performance test method and a test system, wherein the method comprises the following steps: s1, inputting the audio radio frequency signal of the channel to be tested to the input end of the radio station to be tested, and converting the audio radio frequency signal into a radio station digital signal through the radio station to be tested; s2, measuring the power of the radio station digital signal, and comparing the power with the power of the input audio radio frequency signal to obtain the gain of the channel to be measured; and S3, inputting audio radio frequency signals of other channels to the input end of the tested radio station, converting the audio radio frequency signals into radio station digital signals through the tested radio station, repeating the step S2 to obtain the gain of the corresponding channel, and further obtaining the audio signal selectivity performance index of the tested radio station. The invention improves the accuracy of the radio station audio signal selectivity performance test and also reduces the test cost.
Description
Technical Field
The invention relates to the technical field of wireless communication testing, in particular to a radio station audio signal selectivity performance testing method and a radio station audio signal selectivity performance testing system.
Background
Most of the radio stations are digital radio stations, including radio stations, and the receiving performance of the radio receiving device has several key indexes, such as sensitivity, selectivity, bit error rate, etc. Selectivity is an important indicator, and its physical meaning is the ability of a wireless receiver to select from a plurality of signals (also called interfering signals) to receive its own desired signal. In the present wireless signal complex environment, the interference signal exists in a large quantity, and the selective performance of the wireless receiver is extremely important to test. In the aspect of the selectivity performance of the wireless receiver, indexes realized by the whole machine can be distributed to different values of the analog channel and the digital channel, and the analog channel is poor in consistency, and the digital channel is basically consistent, so that the selectivity performance of testing the analog channel of the wireless receiver is particularly outstanding.
The existing way to test the selectivity performance of the radio receiver analog channel is: and setting a test interface from an output port of the wireless receiver analog channel, and taking out a signal from the test interface to a test instrument for testing. Although the existing testing method is simple and direct, a testing interface needs to be arranged on a wireless receiver simulation channel, and then a special testing fixture is used for taking out signals to test a testing instrument, so that the normal work of the wireless receiver is influenced, the testing cost is increased, and the testing accuracy is reduced.
Disclosure of Invention
The invention aims to provide a radio station audio signal selectivity performance test method and a radio station audio signal selectivity performance test system, which are used for reducing the cost of radio station audio signal selectivity performance test and improving the test accuracy.
The above object of the present invention is achieved by the following technical solutions:
in a first aspect, the present invention provides a radio station audio signal selectivity performance testing method, including the following steps:
s1, inputting the audio radio frequency signal of the channel to be tested to the input end of the radio station to be tested, and converting the audio radio frequency signal into a radio station digital signal through the radio station to be tested;
s2, measuring the power of the radio station digital signal, and comparing the power with the power of the input audio radio frequency signal to obtain the gain of the channel to be measured;
and S3, inputting audio radio frequency signals of other channels to the input end of the tested radio station, converting the audio radio frequency signals into radio station digital signals through the tested radio station, repeating the step S2 to obtain the gain of the corresponding channel, and further obtaining the audio signal selectivity performance index of the tested radio station.
By adopting the technical scheme, the audio radio frequency signals of the channel to be tested of the radio station and other channels are respectively input into the radio station, the power of the audio radio frequency signals is measured after the audio radio frequency signals are processed into digital signals by the radio receiver of the radio station, the digital signals are compared with the power of the initially input audio radio frequency signals to obtain the gain of the corresponding channel, and the difference value is obtained to be used as the index of the audio signal selectivity performance of the tested radio station, so that a test interface does not need to be arranged on the radio receiver simulation channel of the radio station, a special test fixture is used for taking out the signals to a test instrument for testing, the normal work of the radio receiver is not influenced, the accuracy of the radio station audio signal selectivity performance test is improved, and the test.
The invention is further configured to: the audio frequency radio frequency signal is generated by a radio frequency signal generator, and the working frequency of the radio frequency signal generator is controlled by a computer connected with the radio frequency signal generator.
By adopting the technical scheme, the radio frequency signal generator is controlled by using the computer, and channels with different frequencies can be conveniently generated.
The invention is further configured to: the radio station digital signal is generated by converting and processing the audio radio frequency signal input into the tested radio station through an analog-to-digital converter of the radio station.
By adopting the technical scheme, the analog signal of the radio station audio radio frequency signal is converted into the digital signal, then the signal can be conveniently and rapidly digitized and measured, and the error caused by directly measuring the analog signal is avoided.
The invention is further configured to: and after the power of the radio station digital signal is measured in step S2, the power is output to the computer for power comparison, so as to obtain the gain of the channel to be measured.
By adopting the technical scheme, the power obtained by measurement is output to the computer, so that the computer can be conveniently used for carrying out accurate calculation.
The invention is further configured to: the audio signal selective performance index of the tested electric station comprises a suppression degree.
And the inhibition degree is the difference value between the gain of the channel to be tested and the gains of other channels.
By adopting the technical scheme, the obtained difference value between the gain of the channel to be tested and the gains of other channels is used as the selective performance index of the audio signal of the tested electric station, namely, the suppression degree is used as the selective performance index, so that the capability of the tested electric station for selecting the required signal under the interference of other signals can be well measured.
In a second aspect, the present invention provides a system for selective performance testing of radio audio signals, the system comprising: the device comprises a control computer, a radio frequency signal generator controlled by the control computer and a tested electric platform connected with the control computer.
The invention is further configured to: the control computer controls the operating frequency of the radio frequency signal generator so that the radio frequency signal generator can generate channels of different frequencies.
By adopting the technical scheme, the adjustment and gain calculation of the working frequency of the radio frequency signal generator can be conveniently and rapidly controlled through a computer, and then the test process of the selectivity performance of the tested radio station is controlled.
The invention is further configured to: the tested station is connected with the control computer and outputs channel power of different frequencies to the computer, and the control computer calculates the suppression degree among the different frequency channels based on the power of the different frequency channels as an audio signal selectivity performance test index of the tested station.
By adopting the technical scheme, the frequency to suppression degree of different frequency channels can be calculated conveniently and rapidly by using the computer, so that the test process of the selective performance of the tested radio station can be accurately controlled, and the test error is reduced.
The invention is further configured to: the tested electric stand is provided with a radio frequency signal receiver corresponding to the radio frequency signal generator.
By adopting the technical scheme, the radio-frequency signal receiver corresponding to the radio-frequency signal generator is arranged, and the receiving capacity of the tested platform for the radio-frequency signals is improved.
In conclusion, the beneficial technical effects of the invention are as follows: the radio station audio frequency radio frequency signals of the channel to be tested and other channels are respectively input to the radio station, the power of the radio station audio frequency radio frequency signals is measured after the radio station audio frequency radio frequency signals are processed into digital signals by the radio receiver of the radio station, the digital signals are compared with the power of the initially input audio frequency radio frequency signals to obtain the gain of the corresponding channel, the difference value is obtained to be used as the index of the audio frequency signal selectivity performance of the tested radio station, therefore, a test interface does not need to be arranged on the radio receiver simulation channel of the radio station, a special test fixture is used for taking out the signals to be tested to a test instrument, the normal work of the radio receiver cannot be influenced, the accuracy of the radio station audio frequency signal selectivity.
Drawings
Fig. 1 is a flowchart of a method for testing selective performance of an audio signal of a radio station according to the present invention.
Fig. 2 is a schematic structural diagram of a radio station audio signal selective performance test system provided by the present invention.
Fig. 3 is a schematic structural diagram of a control computer device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
First, the relevant basic knowledge will be described. The quality of the selectivity performance of the radio station receiver is measured, generally, to continuously increase the interference signal of the adjacent channel or the separated channel under the condition that the radio station receiver receives the expected signal of a rated working frequency and keeps a rated receiving error rate until the receiving error rate (or the signal-to-noise ratio) is increased to the rated value. The difference between the interference signal power and the desired signal power is used as the reception selectivity performance value. For example, in a WCDMA base station system, when the receiver receives the desired signal power of-115 dBm, the error rate of the reception performance is guaranteed to be less than 0.1% (or the snr is 12 db), and the interference signal of the adjacent channel or the alternate channel is added, so that the interference signal power is required to reach at least-52 dBm of the adjacent channel and-40 dBm of the alternate channel. The larger the interference signal power can be added, the better the receiver selectivity performance is, and the receiver analog channel is corresponding to, the interference signal needs to be suppressed sufficiently to enable the receiver to achieve the index. On the selective performance of the receiver, the index realized by the whole machine can be distributed to different values of the analog channel and the digital channel, and the selective test is a main link for testing the selective performance of the receiver in the industry because the consistency of the analog channel is poor. The selective property is the gain difference between the interfering signal and the desired signal, i.e. the degree of suppression of the interfering signal, corresponding to the receiver analog channel.
Referring to fig. 1, fig. 1 is a flowchart of a method for testing selective performance of a radio station audio signal, which includes the following steps:
and S1, inputting the audio radio frequency signal of the channel to be tested to the input end of the radio station to be tested, and converting the audio radio frequency signal into a radio station digital signal through the radio station to be tested.
In this embodiment, the channel to be measured is a channel (frequency) allocated by a wireless transmitter or receiver in an FDMA (frequency division multiple access) mode, and FDMA (frequency division multiple access) is to divide a total frequency band of wireless communication into a plurality of equally spaced frequency channels (channels) and then allocate the frequency channels to different users, where the frequency channels do not overlap with each other but have certain mutual interference. The audio RF signal can be generated at a certain operating frequency by an RF signal generator
The audio frequency radio frequency analog signal of the corresponding channel is input to an ADC (analog-to-digital converter) of the station receiver through the input end of the station to be tested and converted into a corresponding digital signal, so that the further digital processing of the signal, such as frequency discrimination, frequency mixing and the like, can be conveniently carried out.
And S2, measuring the power of the radio station digital signal, and comparing the power with the power of the input audio radio frequency signal to obtain the gain of the channel to be measured.
After the digital signal of the audio radio frequency signal of the channel to be measured is obtained in the step S1, the digital signal may be further subjected to frequency mixing processing with a Numerically Controlled Oscillator (NCO) of the wireless receiver in the digital channel to obtain a signal suitable for the measurement range of the power meter, and then the power meter is used to measure the power of the processed frequency-mixed signal; and further comparing the power of the mixing signal with the power of the audio radio-frequency signal with the corresponding frequency sent by the radio-frequency signal generator to obtain the gain of the channel to be tested.
And S3, inputting audio radio frequency signals of other channels to the input end of the tested radio station, converting the audio radio frequency signals into radio station digital signals through the tested radio station, repeating the step S2 to obtain the gain of the corresponding channel, and further obtaining the audio signal selectivity performance index of the tested radio station.
Adjusting the operating frequency of the RF signal generator
Or by generating different operating frequencies by another radio-frequency signal generator, e.g.
And +/-50khz (plus-minus) to send out audio radio frequency signals of other channels and input the audio radio frequency signals to the input end of the tested electric station, converting the audio radio frequency signals into corresponding digital signals through the tested electric station, repeating the step S2 to obtain gains of corresponding channels, comparing the gains of the other channels with the gains of the channels to be tested, and obtaining the difference between the gains as a suppression degree to obtain the audio signal selectivity performance index of the tested electric station.
The implementation principle of the embodiment is as follows: the audio radio frequency signals of the channel to be tested and other channels of the radio station are respectively input to the radio station, the power of the radio station is measured after the radio frequency signals are processed into digital signals by a radio receiver of the radio station, the digital signals are compared with the power of the initially input audio radio frequency signals to obtain the gain of the corresponding channel, and the difference value is obtained to obtain the inhibition degree which is used as the index of the selective performance of the audio signals of the tested station. The method of the embodiment does not need to arrange a test interface on the radio receiver simulation channel of the radio station and use a special test fixture to take out the signal to a test instrument for testing, so that the normal work of the radio receiver is not influenced, the accuracy of the radio station audio signal selectivity performance test is improved, and the test cost is also reduced.
Further, the audio frequency radio frequency signal is generated by a radio frequency signal generator, and the working frequency of the radio frequency signal generator is controlled by a computer connected with the radio frequency signal generator.
The radio frequency audio radio frequency signal can be generated by a radio frequency signal generator, and the radio frequency signal generator adjusts the working frequency thereof under the control of a computer connected with the radio frequency signal generator
And thus channels of different frequencies can be conveniently generated.
Further, the radio station digital signal is generated by converting and processing the audio radio frequency signal input to the tested radio station through an analog-to-digital converter of the radio station.
The radio frequency signal generator generates radio frequency audio radio frequency signals which are analog signals, the analog signals are received by a receiver of a radio station in the same channel (namely, the same working frequency), then the analog signals are converted into digital signals through an analog-to-digital converter (ADC), and the digital signals are subjected to frequency mixing and frequency conversion to form the required radio station digital signals, and equipment and/or operation errors caused by direct measurement of the analog signals can be avoided.
The working frequency of the receiver of the radio station can change the output frequency of the digital numerically controlled oscillator NCO in the receiver according to the frequency of the radio station audio radio frequency signal, so that the receiver can receive the signal with specific frequency.
Further, after the power of the radio station digital signal is measured in step S2, the power is output to the computer for power comparison, so as to obtain the gain of the channel to be measured.
In step S2, the power of the radio station digital signal is obtained by the power meter, and then output to a computer connected to the radio station, and the power of the input audio radio frequency signal is compared with the power of the radio station digital signal measured by the power meter, and the gain of the corresponding channel is obtained by the computer. The power obtained by measurement is output to a computer, so that the computer can be conveniently used for fast and accurate calculation.
Furthermore, the audio signal selectivity performance index of the tested electric station comprises a suppression degree. And the inhibition degree is the difference value between the gain of the channel to be tested and the gains of other channels.
The channel to be measured can be obtained through the step S2 (
) Gain of (2) and other channels (mainly adjacent to the channel to be measured)
+/-50khz and streets
+/-100 khz), and calculating the difference between the gain and the gain by inputting the gain to a computer for comparison, wherein the difference is used as the selective performance index, namely the suppression degree, of the audio signal of the tested station, so as to measure the ability of the tested station to select the required signal under the interference of other signals.
With continued reference to fig. 2, fig. 2 is a schematic structural diagram of the radio station audio signal selectivity performance testing system provided by the present invention, the testing system 100 includes a control computer 101, a radio frequency signal generator 102 controlled by the control computer, and a tested station 103 connected to the control computer 101.
The control computer 101 runs a control program, which can be used to send a control instruction to the rf signal generator 102 through a network port, a serial port, or the like, so as to adjust the operating frequency of the rf signal generator 102 according to the test requirement, so that the rf signal generator 102 can generate channels with different frequencies.
The station under test 103 is connected to the control computer 101 via a cable (e.g., a network cable, a serial port cable, etc.), and is provided with a radio frequency signal receiver 1031 corresponding to the radio frequency signal generator 102. When the rf signal receiver 1031 of the tested station 103 receives the audio rf signal sent by the rf signal generator 102, it performs analog-to-digital conversion, frequency mixing, power measurement, and other processing, and then outputs the powers of different frequency channels to the control computer 101, and finally the control computer 101 calculates the gains of different frequency channels based on the received powers of different frequency channels and the input power of the audio rf signal, and further calculates the gain difference between different channels, i.e., the suppression degree, as an index for the audio signal selectivity performance test of the tested station 103. The adjustment of the working frequency of the radio frequency signal generator and the gain calculation of different frequency channels are conveniently and quickly controlled by the computer, so that the test process of the selectivity performance of the tested radio station can be accurately controlled, the test error is further reduced, and the test precision is improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of the control computer device according to an embodiment of the present invention, and as shown in fig. 3, the control computer device 200 includes: the memory 202, the processor 201, and the computer program stored in the memory 202 and operable on the processor 201, when executed by the processor 201, may implement sending a control instruction to the radio frequency signal generator 102 and receiving gains of different frequency channels output by the tested station 103, and then calculating a suppression degree between different frequency channels based on the received gains of different frequency channels to be used as an index for an audio signal selectivity performance test of the tested station 103, and implement corresponding beneficial effects, and are not described herein again to avoid repetition.
The processor 201 may be a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor, or other data Processing chip in some embodiments. The memory 202 stores the computer program operable on the processor 201, and when executed, the computer program implements corresponding functions.
Illustratively, the computer program stored in the computer memory 202 described above includes computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, and the like. The computer memory may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A radio station audio signal selectivity performance test method is characterized by comprising the following steps:
s1, inputting the audio radio frequency signal of the channel to be tested to the input end of the radio station to be tested, and converting the audio radio frequency signal into a radio station digital signal through the radio station to be tested;
s2, measuring the power of the radio station digital signal, and comparing the power with the power of the input audio radio frequency signal to obtain the gain of the channel to be measured;
and S3, inputting audio radio frequency signals of other channels to the input end of the tested radio station, converting the audio radio frequency signals into radio station digital signals through the tested radio station, repeating the step S2 to obtain the gain of the corresponding channel, and further obtaining the audio signal selectivity performance index of the tested radio station.
2. The method of claim 1, wherein: the audio frequency radio frequency signal is generated by a radio frequency signal generator, and the working frequency of the radio frequency signal generator is controlled by a computer connected with the radio frequency signal generator.
3. The method of claim 2, wherein: the radio station digital signal is generated by converting and processing the audio radio frequency signal input into the tested radio station through an analog-to-digital converter of the radio station.
4. The method of claim 3, wherein: and after the power of the radio station digital signal is measured in step S2, the power is output to the computer for power comparison, so as to obtain the gain of the channel to be measured.
5. The method of claim 4, wherein: the audio signal selective performance index of the tested electric station comprises a suppression degree.
6. The method of claim 5, wherein: and the inhibition degree is the difference value between the gain of the channel to be tested and the gains of other channels.
7. A radio station audio signal selectivity performance test system is characterized in that: the system comprises:
a control computer;
a radio frequency signal generator controlled by the control computer; and
and the tested electric stand is connected with the control computer.
8. The system of claim 7, wherein: the control computer controls the operating frequency of the radio frequency signal generator so that the radio frequency signal generator can generate channels of different frequencies.
9. The system of claim 8, wherein: the tested station is connected with the control computer and outputs channel power of different frequencies to the computer, and the control computer calculates the suppression degree among the different frequency channels based on the power of the different frequency channels as an audio signal selectivity performance test index of the tested station.
10. The system of claim 9, wherein: the tested electric stand is provided with a radio frequency signal receiver corresponding to the radio frequency signal generator.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213902A (en) * | 1997-08-26 | 1999-04-14 | 汤姆森消费电子销售股份有限公司 | RDS ratio with multi-function RDS button |
| CN1606261A (en) * | 2003-10-10 | 2005-04-13 | 华为技术有限公司 | Method for testing analog channel selective performance of receiver |
| US20100150275A1 (en) * | 2008-12-12 | 2010-06-17 | Sirf Technology, Inc. | Systems and Methods for Digitizing Multiple Channels in a Receiver |
| US20160337049A1 (en) * | 2015-05-11 | 2016-11-17 | Collision Communications, Inc. | Methods, Systems, And Computer Program Products For Calibrating Hardware-Induced Distortion In A Communication System |
-
2019
- 2019-12-05 CN CN201911235776.0A patent/CN111010243A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213902A (en) * | 1997-08-26 | 1999-04-14 | 汤姆森消费电子销售股份有限公司 | RDS ratio with multi-function RDS button |
| CN1606261A (en) * | 2003-10-10 | 2005-04-13 | 华为技术有限公司 | Method for testing analog channel selective performance of receiver |
| US20100150275A1 (en) * | 2008-12-12 | 2010-06-17 | Sirf Technology, Inc. | Systems and Methods for Digitizing Multiple Channels in a Receiver |
| US20160337049A1 (en) * | 2015-05-11 | 2016-11-17 | Collision Communications, Inc. | Methods, Systems, And Computer Program Products For Calibrating Hardware-Induced Distortion In A Communication System |
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Application publication date: 20200414 |