CN108702165B

CN108702165B - Radio signal determination method and radio

Info

Publication number: CN108702165B
Application number: CN201780009086.6A
Authority: CN
Inventors: 邹剑锋; 孔令华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-03
Filing date: 2017-04-18
Publication date: 2020-10-27
Anticipated expiration: 2037-04-18
Also published as: CN108702165A; WO2018126553A1

Abstract

A signal determination method of a radio and the radio are provided to solve the problem of poor radio effect of the radio. In the method, the radio receiver may determine that the signal is a station signal based on a comparison of a bandwidth of the received signal to a set bandwidth threshold. By the method, the radio can judge that the received signal is a radio station signal, and the radio effect of the radio can be improved.

Description

Radio signal determination method and radio

The present application claims priority from chinese patent application filed on 03.01/2017 under the name of "method and apparatus for vehicle FM tuning" with the application number 201710001671.3, which is incorporated herein by reference in its entirety.

Technical Field

The application relates to the technical field of radios, in particular to a signal determination method of a radio and the radio.

Background

Currently, a radio station may generate a radio station signal by using Frequency Modulation (FM) modulation, that is, the radio station changes the frequency of a carrier signal according to the change of the amplitude of an audio signal (modulation signal) to be transmitted to generate the radio station signal. Wherein the frequency of the carrier signal is a legitimate frequency authorized by a radio authority.

Since the amplitude of the signal, which may also be referred to as the intensity (level), is severely affected after the signal is disturbed during the transmission process. Therefore, during the channel searching process, the radio usually eliminates the interference signal and identifies the station signal according to the strength of the received signal.

Because the traditional radio mainboard has low noise and less interference sources or interference sources, the traditional radio can easily judge whether the received signal is a radio station signal or an interference signal according to the strength of the signal. However, as the complexity and the function integration of radio products are higher, the bottom noise of the main board of the current radio becomes higher, and the number of interference sources also becomes higher. Under the condition that the hardware environment is poor, the existing radio still adopts the signal determination method, so that the interference signal is easily identified as the radio station signal in a strong signal area, and the radio station signal is easily identified as the interference signal in a weak signal area, so that the radio reception effect of the radio is poor.

Disclosure of Invention

The embodiment of the application provides a signal determination method of a radio and the radio, which are used for solving the problem of poor radio reception effect of the radio.

In a first aspect, an embodiment of the present application provides a signal determination method for a radio receiver, where the method includes: the radio may determine that the signal is a station signal based on a comparison of a bandwidth of the received signal to a set bandwidth threshold, e.g., when the bandwidth is greater than a first bandwidth threshold (e.g., 90kHz, 95kHz, or 100kHz), the radio determines that the signal is a station signal.

By the method, the radio can take the bandwidth of the signal as a main factor for judging the radio station signal, and the received signal is judged to be the radio station signal, so that the radio effect of the radio can be improved.

In one possible design, the radio determines the signal to be an interfering signal when the bandwidth is less than a second bandwidth threshold (e.g., 40kHz, 45kHz, or 55kHz), where the second bandwidth threshold is less than the first bandwidth threshold.

Through the design, the radio can determine that the received signal is the interference signal, so that the radio can discard the interference signal, and if the radio searches for a channel, the radio does not use the frequency for receiving the interference signal as the frequency used by a radio station, thereby improving the radio effect of the radio.

In one possible design, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio acquires a quality parameter of the signal, wherein the quality parameter is used for indicating the quality of the signal; and determining the signal to be a radio station signal according to the comparison result of the quality parameter of the signal and the quality parameter threshold.

Through the design, the radio can also determine that the signal is the radio station signal through the quality parameter of the received signal, so that the radio can take the signal with good quality as the radio station signal, thereby improving the quality of the signal to be played obtained by demodulating the radio, and finally improving the listening experience of a user.

In one possible design, the quality parameters involved in the above design include at least one of: strength, noise and multipath interference strength; wherein the content of the first and second substances,

when the quality parameter comprises intensity, the comparison result comprises that the intensity of the signal is greater than an intensity threshold;

when the quality parameter comprises noise (e.g., USN), the comparison result comprises that the noise of the signal is less than a noise threshold;

when the quality parameter includes a multipath interference strength (e.g., WAM), the comparison result includes the multipath interference strength of the signal being less than a multipath interference strength threshold.

Through the design, the radio can determine that the signal is the radio station signal through the strength, the noise and the multipath interference strength of the received signal, so that the radio can use the signal with good quality as the radio station signal, the quality of the signal to be played obtained by demodulating the signal by the radio can be improved, and finally the listening experience of a user can be improved.

In one possible design, when the quality parameters include multiple quality parameters, the radio receiver may determine whether the received signal is a station signal or an interfering signal by:

the first method is as follows: if any one of the quality parameters of the received signal meets a condition of a station signal (e.g., the strength of the signal is greater than a strength threshold, the noise of the signal is less than a noise threshold, or the multipath interference strength of the signal is less than a multipath interference strength threshold), the radio determines the signal to be a station signal; otherwise, the radio determines the signal to be an interfering signal.

The second method comprises the following steps: if each of the quality parameters of the received signal meets the condition of a corresponding radio station signal, the radio determines that the signal is a radio station signal; otherwise, the radio determines the signal to be an interfering signal.

Through the design, the radio receiver can determine the type of the signal through the quality parameter under the condition that whether the received signal is an interference signal or a station signal cannot be determined through the bandwidth.

In one possible design, strength, noise and multipath interference strength parameters may be used as secondary factors in determining the signal type of the radio, with different parameters having different priorities. For example, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio receiver determines whether the signal is an interference signal or a station signal according to a parameter of a first secondary factor (for example, at least one of the strength of the signal, the noise and the multipath interference strength), and if the type of the signal cannot be determined, the radio receiver continues to determine whether the signal is an interference signal or a station signal according to a parameter of a second secondary factor (at least one of the parameters except for the parameter of the first secondary factor) until the type of the station signal is determined according to the parameter of the last secondary factor.

In one possible design, in a scenario where the intensity is a first secondary factor and the interference parameter is a second secondary factor, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio acquires the intensity of the signal; and determining the type of the signal by:

when the intensity is greater than a first intensity threshold (e.g., 50dBuV), the radio determines the signal to be a station signal;

the radio determines the signal as an interfering signal when the strength is less than a second strength threshold (e.g., 20dBuV), wherein the second strength threshold is less than the first strength threshold.

By the above method, the radio receiver can determine the type of the signal through the quality parameter in the case that whether the received signal is an interference signal or a station signal cannot be determined through a bandwidth.

In one possible design, when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold, the radio acquires an interference parameter of the signal, the interference parameter including at least one of: noise, multipath interference strength; and determining the type of the signal by:

when the interference parameter is smaller than an interference parameter threshold value, the radio determines that the signal is a radio station signal;

when the interference parameter is greater than or equal to the interference parameter threshold, the radio determines the signal to be an interfering signal.

In the case that the radio receiver can not determine the type of the received signal through the bandwidth, and cannot determine the type of the signal through the strength of the signal, through the above design, the radio receiver can also determine the type of the signal through the interference parameter of the signal. Therefore, the radio can take the signal with good quality as the radio station signal, so that the quality of the signal to be played obtained by demodulating the signal by the radio can be improved, and the listening experience of a user can be improved finally.

In a second aspect, the present application further provides a radio receiver, where the radio receiver has a function of implementing the radio receiver behavior in the above method example. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In a possible design, the structure of the radio receiver includes a receiving unit and a processing unit, and these units may perform corresponding functions in the above method example, which is specifically referred to the detailed description in the method example, and is not described herein again.

In one possible design, the radio receiver has a structure including a receiver for receiving a signal, a processor configured to support the radio receiver to perform the corresponding functions of the above-described method, and a memory. The memory is coupled to the processor and holds the necessary program instructions (or applications) and data for the radio.

In a third aspect, an embodiment of the present application further provides a computer storage medium, where a software program is stored, and when the software program is read and executed by one or more processors, the software program may implement the method provided by the first aspect or any one of the designs of the first aspect.

In the embodiment of the application, the radio receiver can determine that the signal is a station signal according to the comparison between the bandwidth of the received signal and the set bandwidth threshold. The signal has small bandwidth change although the signal strength may change greatly during the transmission process. In addition, the bandwidth difference between the radio station signal and the interference signal is large, so that, compared with the prior art, in the method provided by the embodiment of the application, the radio receiver uses the bandwidth of the signal as a main factor for judging the radio station signal, and judges that the received signal is the radio station signal, so that the radio reception effect of the radio receiver can be improved.

Drawings

Fig. 1 is a flowchart of a signal determination method for a radio according to an embodiment of the present application;

fig. 2 is a flowchart illustrating an example of a method for determining a signal of a radio according to an embodiment of the present application;

FIG. 3 is a flow chart of an example of another method for determining a signal of a radio according to an embodiment of the present application;

fig. 4 is a block diagram of a radio according to an embodiment of the present application;

fig. 5 is a block diagram of another radio according to an embodiment of the present application.

Detailed Description

The application provides a signal determination method of a radio and the radio, which are used for solving the problem of poor radio reception effect of the radio. The method and the radio are based on the same inventive concept, and because the method and the radio solve the problems on the similar principle, the implementation of the radio and the method can be referred to each other, and repeated parts are not repeated.

In the method provided by the embodiment of the application, the radio receiver can determine that the signal is a station signal according to the comparison between the bandwidth of the received signal and the set bandwidth threshold. The signal has small bandwidth change although the signal strength may change greatly during the transmission process. In addition, the bandwidth difference between the radio station signal and the interference signal is large, so that compared with the prior art, in the method, the radio takes the bandwidth of the signal as a main factor for judging the radio station signal, and judges that the received signal is the radio station signal, so that the radio reception effect of the radio can be improved.

Hereinafter, some terms in the present application are explained to be understood by those skilled in the art.

1. The bandwidth of a signal related to the embodiments of the present application is the width of the frequency of the signal in the frequency spectrum, i.e. the difference between the highest frequency component and the lowest frequency component of the signal in the frequency spectrum.

In general, the energy of the interference signal is small relative to the station signal, and the factors affecting the signal energy include the strength of the signal and the bandwidth of the signal, that is, the strength of the signal is larger and the bandwidth of the signal is smaller in the case that the signal energy is fixed, and obviously, the strength of the interference signal is larger in the scene that the radio can receive the interference signal, so the bandwidth of the interference signal is small, and is usually below several tens of kHz.

Since FM modulated broadcast frequency intervals may be 100 kilohertz (kHz), 200kHz, 300kHz, or 400kHz as specified in international standards, the bandwidth of the station signal generated and transmitted by the station is large relative to the interfering signal.

In addition, during signal transmission, various interference factors have a large influence on the strength of the signal and a weak influence on the bandwidth of the signal, so that the bandwidth of the station signal and the interference signal changes little during transmission. As can be seen from the above description of the bandwidths of the station signal and the interference signal generated by the station, there is a significant gap between the bandwidth of the interference signal received by the station and the bandwidth of the station signal received by the station.

2. The first bandwidth threshold is a reference value for directly determining that a signal received by a radio is a station signal. Optionally, the value of the first bandwidth threshold may be specifically set according to a first bandwidth value range of a radio station signal transmitted by the radio station under a normal condition and a second bandwidth value range of a general interference signal, for example, the first bandwidth threshold may be smaller than or equal to a minimum value in the first bandwidth value range, or may be larger than a maximum value in the second bandwidth value range. Optionally, the first bandwidth threshold may also be specifically set according to a specific application scenario. For another example, as can be seen from the above description of the bandwidths of the station signal and the interfering signal, the first bandwidth threshold value is 90kHz, 95kHz, or 100 kHz. It should be noted that, in the embodiment of the present application, a value of the first bandwidth threshold is not specifically limited.

3. The second bandwidth threshold is a reference value for directly determining that the signal received by the radio is an interference signal. As can be seen from the above description of the first bandwidth threshold, the second bandwidth threshold is smaller than the first bandwidth threshold. The same principle as the first bandwidth threshold value, the value of the first bandwidth threshold value may be specifically set according to the second bandwidth value range, for example, the second bandwidth threshold value may be equal to or smaller than the maximum value of the second bandwidth value range. Optionally, the first bandwidth threshold may also be specifically set according to a specific application scenario. For another example, as can be seen from the above description of the bandwidths of the station signal and the interfering signal, the second bandwidth threshold value is 40kHz, 45kHz, or 50 kHz. It should be noted that, in the embodiment of the present application, a value of the second bandwidth threshold is not specifically limited.

4. The quality parameter of the signal that this application embodiment relates to is used for instructing the quality of signal, consequently the dereferencing of the quality of signal can embody the radio demodulation the quality of the signal of waiting to broadcast that the signal obtained has influenced the radio broadcast user's experience of listening to when waiting to broadcast the signal. Optionally, the quality parameter of the signal may include at least one of: intensity, interference parameters, wherein the interference parameters include: noise and/or multipath interference strength, etc., which are not limited in this application.

In the embodiment of the present application, the quality parameter of the signal is a factor for further determining the radio station signal, i.e. a secondary factor, when the radio determines the radio station signal according to the bandwidth of the signal, and whether the signal is the radio station signal is not determined. Optionally, the secondary factor may be one of the above parameters, or a plurality of parameters. Optionally, when there are multiple parameters of the secondary factor, different priorities may be set for different parameters.

For example, strength as a first secondary factor, noise as a second secondary factor, and multipath interference strength as a third secondary factor, etc.; in this case, the radio receiver continues to determine the strength of the signal when it is not possible to determine which signal the received signal is, based on the bandwidth of the signal, and continues to determine whether the received signal is an interference signal or a station signal when it is still not possible to determine which signal the received signal is.

For another example, the strength is taken as a first secondary factor, and the interference parameter (noise and/or multipath interference strength) is taken as a second secondary factor; in this case, when the radio receiver cannot determine which signal the received signal is based on the bandwidth of the signal, the radio receiver continues to determine the strength of the signal, and if it is still impossible to determine which signal the received signal is based on, the radio receiver further determines the signal based on the interference parameter at the same time, thereby determining whether the received signal is an interference signal or a station signal.

5. The quality parameter threshold referred to in the embodiments of the present application is a reference value for the radio to determine whether a received signal is an interference signal/a station signal. Since the quality of the interference signal is generally poor, and even if the radio demodulates a signal with poor quality, the quality of the obtained signal to be played is also poor, and the listening experience of the user is further reduced. Thus, the radio receiver can determine a signal of higher quality as a station signal by comparing the quality parameter of the received signal with the quality parameter threshold.

As is clear from the above description of the quality parameter, the quality parameter of the signal comprises at least one of: strength, noise, multipath interference strength, etc. and, accordingly, each quality parameter has a corresponding quality parameter threshold, and thus, the quality parameter threshold includes at least one of: an intensity threshold, a noise threshold, a multipath interference intensity threshold, etc., which are not limited in this application.

Optionally, the value of the quality parameter threshold may be specifically set according to the value ranges of the quality parameters of the interference signal and the radio station signal, or may be specifically set by combining the value ranges of the two signals and the overall scheme of the signal determination method, which is not limited in this application.

6. The strength of the signal related to the embodiments of the present application can be expressed in decibels (dBuV) by the amplitude of the signal.

7. The Noise related to the embodiment of the present application may be UltraSonic Noise (USN).

8. The multipath interference strength according to the embodiment of the present application may be indicated by Wideband Amplitude Modulation (WAM).

It should be noted that the above-mentioned strength, noise, and multipath interference strength may represent the strength of various interferences received by the signal, and when the strength of the interference received by the signal is higher, the quality of the signal is poorer, and when the strength of the interference received by the signal is lower, the quality of the signal is better. And thus may be used to indicate the quality of the signal.

In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 illustrates a signal determination method for a radio receiver, which is provided by an embodiment of the present application and is applicable to various FM modulated radio receivers, such as a general household radio receiver, a car radio receiver, and the like. The radio receiver can lock a certain frequency and use the frequency as a frequency used by a station if the radio receiver determines that the received signal at the certain frequency is a station signal in the channel searching process by the method. Referring to fig. 1, the process of the method includes:

s101: the radio determines the bandwidth of the signal after receiving the signal.

The radio station signal is generated by the radio station performing FM modulation on an audio signal to be transmitted, that is, the radio station changes the frequency of the high-frequency carrier signal according to the change of the amplitude value of the audio signal to generate the radio station signal. Since the above description of the interference signal indicates that the bandwidth of the interference signal is small, the interference signal can be regarded as a carrier. Clearly, there is a significant difference between the bandwidth of the station signal and the bandwidth of the interfering signal. Thus, in some embodiments of the present application, the radio uses the above-described differences to distinguish between interfering signals and station signals, which may improve the accuracy with which the radio determines the type of signal received.

S102: when the bandwidth is greater than a first bandwidth threshold, the radio determines the signal to be a station signal.

Since the international standard specifies that the FM modulation broadcast frequency interval in china is 200kHz, the necessary bandwidth of the station signal is 200kHz, while the bandwidth of the station signal is 180kHz at a typical monaural 100% modulation degree, and the bandwidth of the station signal is 256kHz at a stereo 100% modulation degree, the radio signal with a good sound pickup effect is generally greater than 100kHz in china. Thus, optionally, the first bandwidth threshold may be set to 100 kHz. Of course, the first bandwidth threshold may also be set to 90kHz or 95kHz, and the like, which is not limited in this embodiment of the application.

In the following embodiments, the first bandwidth threshold is 100kHz for example.

Optionally, in some specific scenarios, in order to ensure the accuracy of the radio for determining the station signal, the radio may further consider some secondary factors, i.e. quality parameters of the signal, such as strength, etc., in the case that the bandwidth is determined to be greater than the first bandwidth threshold.

Optionally, through the above steps, the radio may determine that the received signal is a radio station signal, and may improve the reception effect of the radio.

Optionally, the method further comprises the following steps:

s103: when the bandwidth is less than a second bandwidth threshold, the radio determines the signal to be an interfering signal.

Wherein the second bandwidth threshold is less than the first bandwidth threshold. As can be seen from the above description of the bandwidth of the interference signal, the bandwidth of the interference signal is small, typically several tens of kHz. Therefore, optionally, the second bandwidth threshold may be set to 50 kHz. Of course, the second bandwidth threshold may also be set to 40kHz, 45kHz, or 55kHz, and the like, which is not limited in this embodiment of the application.

In the following embodiments, the second bandwidth threshold is 50kHz for example.

Through the step, the radio can determine that the received signal is the interference signal, so that the radio can discard the interference signal, and if the radio searches for a channel, the radio does not use the frequency for receiving the interference signal as the frequency used by a radio station, thereby improving the radio effect of the radio.

As can be seen from the description of S102 and S103, through the above two steps, it can be determined whether the received signal is an interference signal or a station signal, and then, in practical applications, for various reasons, there may also be an interference signal with a larger bandwidth (greater than or equal to the second bandwidth threshold value) and/or a station signal with a smaller bandwidth (less than or equal to the first bandwidth threshold value). Therefore, optionally, the method provided in the embodiment of the present application further includes: when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio determines the manner of the station signal, which may be referred to as S104a below.

S104 a: and when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio acquires a quality parameter of the signal, and determines that the signal is a radio station signal according to a comparison result of the quality parameter of the signal and the quality parameter threshold, wherein the quality parameter is used for indicating the quality of the signal.

Through the above S104a, the radio may further determine that the signal is a radio station signal according to the quality parameter of the received signal, so that the radio may use the signal with good quality as the radio station signal, thereby improving the quality of the signal to be played obtained by demodulating the signal by the radio, and finally improving the listening experience of the user.

As can be seen from the above description of the quality parameters, the quality parameters may include at least one of the following: strength, noise, multipath interference strength, etc. Optionally, in S104a, the parameters included in the quality parameters are not prioritized.

Optionally, when the quality parameter includes only one of the above, the radio receiver may determine whether the signal is a station signal directly according to the comparison result, for example, the following scenario:

scene one: the quality parameter only comprises intensity, and when the comparison result shows that the intensity of the signal is greater than an intensity threshold value, the radio determines that the signal is a radio station signal; and when the comparison result is that the intensity of the signal is less than or equal to the intensity threshold value, the radio receiver determines that the signal is an interference signal.

In this scenario, the intensity threshold may be set according to a value of the intensity of the radio station signal that does not affect the listening experience of the user, for example, the intensity threshold may be set to 35dBuV, 40dBuV, or the like, which is not limited in this application.

Scene two: the quality parameter only comprises noise (such as USN), and when the comparison result shows that the noise of the signal is less than a noise threshold value, the radio determines that the signal is a station signal; and when the comparison result is that the noise of the signal is greater than or equal to a noise threshold value, the radio determines the signal to be an interference signal.

In this scenario, the noise threshold may be set according to a value of noise of the radio station signal that does not affect the listening experience of the user, for example, the noise threshold may be 15%.

Scene three: the quality parameter only comprises a multipath interference strength (such as WAM), and when the comparison result shows that the multipath interference strength of the signal is smaller than a multipath interference strength threshold value, the radio receiver determines the signal to be a station signal; and when the comparison result shows that the multipath interference strength of the signal is greater than or equal to a multipath interference strength threshold value, the radio receiver determines the signal to be an interference signal.

Similarly, in this scenario, the multipath interference strength threshold may be set according to a value of the multipath interference strength of the radio station signal that does not affect the listening experience of the user, for example, the multipath interference strength threshold may be 15%.

Optionally, when the quality parameters include only a plurality of the above parameters, the radio receiver may determine whether the signal is a station signal or an interfering signal according to a comparison result of the plurality of quality parameters, for example, the following scenario:

scene four: the quality parameters include intensity and noise.

Scene five: the quality parameters include strength and multipath interference strength.

Scene six: the quality parameters include noise and multipath interference strength.

Scene seven: the quality parameters include strength, noise, and multipath interference strength.

In the above scenarios four to seven, the radio receiver may determine whether the received signal is a station signal or an interfering signal by the following ways:

the first method is as follows: if any one of the quality parameters of the received signal meets the condition of the radio station signal, the radio determines that the signal is the radio station signal; otherwise, the radio determines the signal to be an interfering signal.

For example, in a fourth scenario, if the comparison result of the intensity is that the signal of the signal is greater than the intensity threshold, or the comparison result of the noise is that the noise of the signal is less than the noise threshold, the radio determines that the signal is a station signal; otherwise, the radio determines the signal to be an interference signal.

For example, in a scenario four, if the comparison result of the intensity is that the signal of the signal is greater than the intensity threshold, and the comparison result of the noise is that the noise of the signal is less than the noise threshold, the radio determines that the signal is a station signal; otherwise, the radio determines the signal to be an interference signal.

Based on the above description of the quality parameters, the strength, the noise and the multipath interference strength can be used as secondary factors for determining the signal type of the radio, and the priority of different parameters is different. For example, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio receiver determines whether the signal is an interference signal or a station signal according to a parameter of a first secondary factor (for example, at least one of the above-mentioned strength, noise and multipath interference strength), and if the type of the signal cannot be determined, the radio receiver continues to determine whether the signal is an interference signal or a station signal according to a parameter of a second secondary factor (at least one of the above-mentioned parameters other than the parameter of the first secondary factor) until the type of the station signal is determined according to the parameter of the last secondary factor.

Based on the above description, in a scenario where the intensity is the first secondary factor and the interference parameter is the second secondary factor, optionally, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio receiver determines the type of the signal by:

s104 b: when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio acquires the strength of the signal.

S105: when the intensity is greater than a first intensity threshold, the radio determines the signal to be a station signal.

S106: when the intensity is less than a second intensity threshold, the radio determines the signal to be an interfering signal, wherein the second intensity threshold is less than the first intensity threshold.

The first intensity threshold and the second intensity threshold may be set according to a specific application scenario. For example, the first intensity threshold is set at 50dBuV and the second intensity threshold is set at 20 dBuV. It should be noted that specific values of the first intensity threshold and the second intensity threshold in the embodiments of the present application are not limited, and the following embodiments take the above values as examples for explanation.

Optionally, the method may further include the steps of:

s107: when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold, the radio acquires an interference parameter of the signal, the interference parameter including at least one of: noise, multipath interference strength;

s108: when the interference parameter is less than the interference parameter threshold, the radio determines the signal to be a station signal.

The interference parameter threshold may be specifically set according to a specific application scenario. For example, when the interference parameter includes noise and the noise is USN, the threshold value set for the USN in the interference parameter threshold value is 15%; when the interference parameter includes a multi-path interference strength and the multi-path interference strength is the WAM, a threshold value set for the multi-path interference strength in the interference parameter threshold value is 15%.

It should be noted that specific values of the interference parameter threshold in the embodiments of the present application are not limited, and the following embodiments take the above values as examples for explanation.

S109: when the interference parameter is greater than or equal to the interference parameter threshold, the radio determines the signal to be an interfering signal.

By the method, the radio can determine the type of the signal sequentially through the strength of the signal and the interference parameter under the condition that whether the received signal is an interference signal or a station signal cannot be determined through the bandwidth. Therefore, the radio can take the signal with good quality as the radio station signal, so that the quality of the signal to be played obtained by demodulating the signal by the radio can be improved, and the listening experience of a user can be improved finally.

By adopting the method provided by the embodiment of the application, the radio can determine that the signal is the radio station signal according to the comparison between the bandwidth of the received signal and the set bandwidth threshold. The bandwidth of the signal varies less during transmission although the intensity may vary more. In addition, the bandwidth difference between the radio station signal and the interference signal is large, so that compared with the prior art, in the method, the radio takes the bandwidth of the signal as a main factor for judging the radio station signal, and judges that the received signal is the radio station signal, so that the radio reception effect of the radio can be improved.

Based on the above embodiments, the present application provides an example of a signal determination method for a radio, which is shown in fig. 2 and includes the following steps:

s201: after receiving the signal, the radio determines the bandwidth BW of the signal.

S202: when BW is more than 100kHz, the radio determines the signal to be a station signal.

S203: when BW < 50kHz, the radio determines the signal to be an interference signal.

S204: and when BW is more than or equal to 50kHz and less than or equal to 100kHz, the radio acquires the strength L of the signal.

S205: when L > 50dBuV, the radio determines the signal to be a station signal.

S206: when L < 20dBuV, the radio determines the signal to be an interfering signal.

S207: and when L is more than or equal to 20dBuV and less than or equal to 50dBuV, the radio acquires the USN and the WAM of the signal.

S208: when USN < 15% and WAM < 15%, the radio determines the signal to be a station signal.

S209: when the USN is larger than or equal to 15 percent or the WAM is larger than or equal to 15 percent, the radio determines the signal as an interference signal.

By the method provided by the embodiment of the application, the radio can determine the type of the received signal according to the bandwidth of the signal, and the radio effect of the radio is improved. Further, in the case that the type of the signal cannot be determined through the bandwidth, the type of the signal may be determined continuously through parameters such as the strength of the signal, the USN, and the WAM. Therefore, the radio can take the signal with good quality as the radio station signal, so that the quality of the signal to be played obtained by demodulating the signal by the radio can be improved, and the listening experience of a user can be improved finally. Compared with the prior art, the method has the advantages that the bandwidth of the signal is used as a main factor for judging the radio station signal, so that the radio reception effect of the radio can be improved.

Based on the above embodiments, the present application provides another example of a method for determining a signal of a radio, as shown in fig. 3, in the method, except for step S302 and subsequent steps S3021 and S3022, other steps are the same as those in the example shown in fig. 2 except for step S202, and therefore, they may be referred to each other, and are not described again here. The different steps from the example shown in fig. 2 are then:

s302: when BW is more than 100kHz, the radio acquires the strength L of the signal.

S3021: when L > 30DBuV, the radio determines the signal to be a station signal.

S3022: and when L is less than or equal to 30DBuV, the radio determines the signal as an interference signal.

Through the steps, the radio can judge the signal with the bandwidth meeting the bandwidth condition of the radio station signal but with the lower strength as the interference signal, so that the radio can use the signal meeting the bandwidth condition of the radio station signal and with good quality as the radio station signal, thereby further improving the quality of the signal to be played obtained by demodulating the signal by the radio and improving the listening experience of a user.

Based on the above embodiments, the present application further provides a radio receiver, where the radio receiver may implement the signal determination method of the radio receiver in the embodiments shown in fig. 1 to fig. 3, and referring to fig. 4, the radio receiver 400 includes: a receiving unit 401, a processing unit 402, wherein,

a receiving unit 401 for receiving a signal;

a processing unit 402 for determining a bandwidth of the signal; and determining the signal as a station signal when the bandwidth is greater than a first bandwidth threshold.

Optionally, the processing unit 402 is further configured to:

when the bandwidth is smaller than a second bandwidth threshold, determining that the signal is an interference signal, wherein the second bandwidth threshold is smaller than the first bandwidth threshold.

Optionally, the processing unit 402 is further configured to:

when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, acquiring a quality parameter of the signal, wherein the quality parameter is used for indicating the quality of the signal;

and determining the signal to be a radio station signal according to the comparison result of the quality parameter of the signal and the quality parameter threshold value.

Optionally, the quality parameter includes at least one of: strength, noise and multipath interference strength;

when the quality parameter comprises intensity, the comparison result comprises that the intensity of the signal is greater than an intensity threshold; or

When the quality parameter comprises noise, the comparison result comprises that the noise of the signal is less than a noise threshold; or

When the quality parameter comprises a multipath interference strength, the comparison result comprises that the multipath interference strength of the signal is smaller than a multipath interference strength threshold value.

Optionally, the processing unit 402 is further configured to:

when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, acquiring the strength of the signal;

when the intensity is greater than a first intensity threshold, determining the signal to be a station signal; or

When the intensity is less than a second intensity threshold, determining that the signal is an interference signal, wherein the second intensity threshold is less than the first intensity threshold.

Optionally, the processing unit 402 is further configured to:

when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold, acquiring an interference parameter of the signal, wherein the interference parameter comprises at least one of the following: noise, multipath interference strength;

when the interference parameter is smaller than an interference parameter threshold value, determining the signal as a radio station signal; or

When the interference parameter is greater than or equal to the interference parameter threshold, determining the signal as an interference signal.

The embodiment of the application provides a radio, and the radio can determine that a received signal is a radio station signal according to the comparison between the bandwidth of the signal and a set bandwidth threshold. The signal has small bandwidth change although the signal strength may change greatly during the transmission process. In addition, the bandwidth difference between the radio station signal and the interference signal is large, so that the radio can use the bandwidth of the signal as a main factor for judging the radio station signal, judge the received signal as the radio station signal and improve the radio reception effect of the radio.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Based on the above embodiments, the present application further provides a computer storage medium storing a software program, which when read and executed by one or more processors can implement the signal determination method of the radio receiver provided by the embodiments. The computer storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Based on the above embodiments, the present application further provides a radio receiver, which is used for implementing the signal determination method of the radio receiver shown in fig. 1-3, and has the functions of the radio receiver 400 shown in fig. 4. Referring to fig. 5, the radio receiver includes: a receiver 501, a processor 502, and a memory 503. Wherein, the receiver 501, the processor 502 and the memory 503 are connected to each other.

Optionally, the receiver 501, the processor 502 and the memory 503 are connected to each other through a bus 504. The bus 504 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.

In the process of implementing the signal determination method of the radio receiver in the above embodiment by the radio receiver 500:

the receiver 501 is used for receiving signals. The receiver 501 includes a receiving antenna.

The processor 502 is configured to determine that the signal is a station signal when the bandwidth is greater than a first bandwidth threshold.

Optionally, the processor 502 is further configured to:

The memory 503 is used for storing application programs and the like. In particular, the application program may include program code comprising computer operating instructions. The memory 503 may include Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 502 executes the application program stored in the memory 503 to implement the above functions, thereby implementing the signal determination method of the radio receiver provided by the above embodiments.

Optionally, the radio 500 further includes various conventional signal processing devices, an earphone interface, a speaker, and other components for implementing the playing function of the radio, which are not described herein again.

In summary, the present application provides a method for determining a signal of a radio receiver and a radio receiver, in which the radio receiver may determine that the signal is a station signal according to a comparison between a bandwidth of the received signal and a set bandwidth threshold. The signal has small bandwidth change although the signal strength may change greatly during the transmission process. In addition, the bandwidth difference between the radio station signal and the interference signal is large, so that, compared with the prior art, in the method provided by the embodiment of the application, the radio receiver uses the bandwidth of the signal as a main factor for judging the radio station signal, and judges that the received signal is the radio station signal, so that the radio reception effect of the radio receiver can be improved.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method for signal determination in a radio receiver, comprising:

after receiving a signal, the radio determines the bandwidth of the signal;

when the bandwidth is larger than a first bandwidth threshold, the radio determines that the signal is a station signal;

when the bandwidth is less than a second bandwidth threshold, the radio determines the signal to be an interference signal, wherein the second bandwidth threshold is less than the first bandwidth threshold;

and when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio determines that the signal is a radio station signal or an interference signal according to the comparison result of the quality parameter of the signal and the quality parameter threshold.

2. The method of claim 1, wherein the quality parameter comprises at least one of: strength, noise and multipath interference strength;

3. The method of claim 1, wherein the radio receiver determining that the signal is a station signal or an interfering signal based on a comparison of a quality parameter of the signal to a quality parameter threshold comprises:

the radio acquires the strength of the signal;

when the intensity is greater than a first intensity threshold, the radio determines that the signal is a station signal; or

When the intensity is less than a second intensity threshold, the radio determines the signal to be an interfering signal, wherein the second intensity threshold is less than the first intensity threshold.

4. The method of claim 3, wherein the method further comprises:

when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold, the radio acquires an interference parameter of the signal, the interference parameter including at least one of: noise, multipath interference strength;

when the interference parameter is smaller than an interference parameter threshold value, the radio determines that the signal is a radio station signal; or

5. A radio receiver, comprising:

a receiving unit for receiving a signal;

a processing unit for determining a bandwidth of the signal; and when the bandwidth is greater than a first bandwidth threshold, determining the signal to be a station signal; when the bandwidth is smaller than a second bandwidth threshold, determining that the signal is an interference signal, wherein the second bandwidth threshold is smaller than the first bandwidth threshold; and when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, determining the signal to be a radio signal or an interference signal according to the comparison result of the quality parameter of the signal and the quality parameter threshold.

6. The radio receiver of claim 5 where the quality parameters include at least one of: strength, noise and multipath interference strength;

7. The radio receiver of claim 5, where the processing unit, when determining that the signal is a station signal or an interfering signal based on a comparison of a quality parameter of the signal to a quality parameter threshold, is specifically configured to:

acquiring the strength of the signal;

8. The radio receiver of claim 7, where the processing unit is further to:

9. A radio receiver, comprising:

a receiver for receiving a signal;

a memory for storing program instructions;

a processor for calling the program instructions stored in the memory to perform:

determining a bandwidth of the signal;

when the bandwidth is larger than a first bandwidth threshold value, determining the signal as a radio station signal; when the bandwidth is smaller than a second bandwidth threshold, determining that the signal is an interference signal, wherein the second bandwidth threshold is smaller than the first bandwidth threshold; and when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, determining the signal to be a radio signal or an interference signal according to the comparison result of the quality parameter of the signal and the quality parameter threshold.

10. The radio receiver of claim 9 where the quality parameters include at least one of: strength, noise and multipath interference strength;

11. The radio receiver of claim 9, where the processor, when determining that the signal is a station signal or an interfering signal based on a comparison of a quality parameter of the signal to a quality parameter threshold, is specifically configured to:

acquiring the strength of the signal;

12. The radio receiver of claim 11 where the processor is further configured to:

13. A computer storage medium having stored therein a software program which when read and executed by one or more processors may implement the method of any one of claims 1-4.