CN112532286B - Diversity combining mode selection method and device based on multi-antenna diversity reception - Google Patents
Diversity combining mode selection method and device based on multi-antenna diversity reception Download PDFInfo
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- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
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Abstract
The embodiment of the application discloses a diversity combining mode selection method and device based on multi-antenna diversity reception. According to the technical scheme provided by the embodiment of the application, a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting terminal are received through multi-antenna diversity, the signal combining performance of each diversity combining mode is evaluated based on the signal to noise ratio of each signal branch corresponding to each signal copy, a corresponding performance evaluation result is obtained, the corresponding diversity combining mode is selected according to the performance evaluation result to carry out signal combining of the plurality of signal copies corresponding to the current signal transmitting terminal, the signal transmitting terminal and the corresponding selected diversity combining mode are bound to construct and store a mode selection relation, and the mode selection relation is used for providing query of the diversity combining mode corresponding to the signal transmitting terminal. By adopting the technical means, the diversity combining mode can be adaptively selected based on performance evaluation to carry out signal combination, so that the signal quality of combined signals is guaranteed, and the signal receiving and processing effect is optimized.
Description
Technical Field
The embodiment of the application relates to the technical field of diversity reception, in particular to a diversity combining mode selection method and device based on multi-antenna diversity reception.
Background
At present, with the development of communication technology, various communication devices have become indispensable devices for people's life. In the communication process of the communication device, in order to ensure the communication quality, reduce the influence of signal fading, and ensure the signal transmission quality, a diversity technique is usually adopted to transmit signals between a signal transmitting end and a signal receiving end. The diversity technique is to use multiple signal paths that transmit the same information and have approximately equal average signal strength and mutually independent fading characteristics, and appropriately combine these signals at the receiving end, so as to greatly reduce the influence of multipath fading, thereby improving the reliability of transmission. That is, if one wireless propagation path experiences deep fading, and another relatively independent path may still contain a strong signal, two or more signals may be selected from the multiple signals to be combined, so that the instantaneous signal-to-noise ratio and the average signal-to-noise ratio of the receiving end can be simultaneously improved, the influence of multipath fading is further reduced, and the reliability of information transmission is improved.
However, when diversity combining is performed on a conventional diversity signal, the diversity combining mode is fixed, and it is difficult to achieve a better diversity signal combining effect.
Disclosure of Invention
The embodiment of the application provides a diversity combining mode selection method and device based on multi-antenna diversity reception, which can adaptively select a diversity combining mode, ensure the signal quality of a combined signal and optimize the signal receiving and processing effect.
In a first aspect, an embodiment of the present application provides a diversity combining mode selection method based on multi-antenna diversity reception, including:
receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, determining the signal power and the noise power of a signal branch corresponding to each diversity antenna based on each signal copy, and determining the signal-to-noise ratio of each signal branch based on the signal power and the noise power;
evaluating the signal combination performance of each diversity combination mode based on the signal-to-noise ratio, the signal power and the noise power of each signal branch to obtain a corresponding performance evaluation result, and selecting the corresponding diversity combination mode to perform signal combination of a plurality of signal copies corresponding to the current signal transmitting end according to the performance evaluation result, wherein the diversity combination mode comprises a selective combination mode, a maximum ratio combination mode and an equal gain combination mode;
and binding the signal transmitting terminal and the correspondingly selected diversity combining mode to construct and store a mode selection relation, wherein the mode selection relation is used for providing the diversity combining mode query corresponding to the signal transmitting terminal.
Further, after selecting the corresponding diversity combining mode according to the performance evaluation result to perform signal combining of the plurality of signal copies corresponding to the current signal transmitting end, the method includes:
extracting a combined signal obtained by combining the corresponding diversity combining modes;
and measuring and calculating the signal quality parameter of the combined signal, and performing corresponding selection verification of the diversity combining mode based on the signal quality parameter.
Further, extracting a combined signal obtained by combining the corresponding diversity combining modes includes:
and randomly extracting a set number of combined signals obtained by combining the diversity combining modes.
Further, the performing selection verification of the corresponding diversity combining mode based on the signal quality parameter includes:
comparing the signal quality parameters with preset signal quality parameter thresholds, and outputting corresponding selection verification results;
and if the selection verification result judges that the corresponding diversity combining mode is selected wrongly, the diversity combining mode is selected again.
Further, after the selection of the diversity combining mode is performed again, the method further includes:
unbinding the corresponding mode selection relationship and reconstructing the mode selection relationship based on the reselected diversity combining mode.
Further, selecting the corresponding diversity combining mode according to the performance evaluation result to perform signal combining of the plurality of signal copies corresponding to the current signal transmitting end, including:
and determining an initial signal quality parameter of each signal copy, and screening the signal copies for signal combination based on the initial signal quality parameters.
Further, after the signal transmitting end and the correspondingly selected diversity combining mode are bound to construct a mode selection relationship and stored, the method further includes:
receiving a plurality of signal copies corresponding to the same information, analyzing the signal copies and extracting signal transmitting terminal information;
and inquiring the mode selection relation based on the signal transmitting terminal information, and determining the corresponding diversity combining mode to carry out signal combination of the current signal copy.
In a second aspect, an embodiment of the present application provides a diversity combining mode selection apparatus based on multi-antenna diversity reception, including:
the receiving module is used for receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, determining the signal power and the noise power of a signal branch corresponding to each diversity antenna based on each signal copy, and determining the signal-to-noise ratio of each signal branch based on the signal power and the noise power;
a selection module, configured to evaluate signal combining performance of each diversity combining mode based on a signal-to-noise ratio, a signal power, and a noise power of each signal branch to obtain a corresponding performance evaluation result, and select the corresponding diversity combining mode according to the performance evaluation result to perform signal combining of multiple signal copies corresponding to a current signal transmitting end, where the diversity combining mode includes a selective combining mode, a maximum ratio combining mode, and an equal gain combining mode;
and the binding module is used for binding the signal transmitting terminal and the correspondingly selected diversity combining mode to construct and store a mode selection relation, and the mode selection relation is used for providing the diversity combining mode query corresponding to the signal transmitting terminal.
In a third aspect, an embodiment of the present application provides an electronic device, including:
a memory and one or more processors;
the memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method for diversity combining mode selection based on multiple antenna diversity reception as described in the first aspect.
In a fourth aspect, embodiments of the present application provide a storage medium containing computer executable instructions for performing the method for diversity combining mode selection based on multiple antenna diversity reception according to the first aspect when executed by a computer processor.
The method comprises the steps of receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, evaluating the signal combination performance of each diversity combination mode based on the signal-to-noise ratio of each signal branch corresponding to each signal copy to obtain a corresponding performance evaluation result, selecting the corresponding diversity combination mode according to the performance evaluation result to carry out signal combination of the plurality of signal copies corresponding to the current signal transmitting end, binding the signal transmitting end and the corresponding selected diversity combination mode to construct and store a mode selection relation, wherein the mode selection relation is used for providing inquiry of the diversity combination mode corresponding to the signal transmitting end. By adopting the technical means, the diversity combining mode can be adaptively selected based on performance evaluation to carry out signal combination on the current diversity signals, so that the signal quality of the combined signals is guaranteed, and the signal receiving and processing effect is optimized.
Drawings
Fig. 1 is a flowchart of a diversity combining mode selection method based on multi-antenna diversity reception according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a signal receiving end in the first embodiment of the present application;
fig. 3 is a flowchart of verification of diversity combining mode selection in the first embodiment of the present application;
fig. 4 is a flowchart of a diversity combining mode query in the first embodiment of the present application;
FIG. 5 is a flowchart illustrating signal combination according to a first embodiment of the present application;
fig. 6 is a schematic structural diagram of a diversity combining mode selection apparatus based on multi-antenna diversity reception according to a second embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to a third embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
The first embodiment is as follows:
fig. 1 is a flowchart of a diversity combining mode selecting method based on multi-antenna diversity reception according to an embodiment of the present disclosure, where the diversity combining mode selecting method based on multi-antenna diversity reception according to the present disclosure may be executed by a diversity combining mode selecting device based on multi-antenna diversity reception, the diversity combining mode selecting device based on multi-antenna diversity reception may be implemented in a software and/or hardware manner, and the diversity combining mode selecting device based on multi-antenna diversity reception may be formed by two or more physical entities or may be formed by one physical entity. Generally, the diversity combining mode selection device based on multi-antenna diversity reception may be a base station, a gateway, or other signal receiving end device.
The following description will be made taking the diversity combining mode selecting apparatus based on multi-antenna diversity reception as an example of a main body for executing the diversity combining mode selecting method based on multi-antenna diversity reception. Referring to fig. 1, the diversity combining mode selection method based on multi-antenna diversity reception specifically includes:
s110, receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, determining the signal power and the noise power of a signal branch corresponding to each diversity antenna based on each signal copy, and determining the signal-to-noise ratio of each signal branch based on the signal power and the noise power.
The diversity combining mode selection method based on multi-antenna diversity reception in the embodiment of the application aims to evaluate the signal combining performance of each diversity combining mode based on the detection result by detecting the signal branch corresponding to each diversity antenna, and further determine the diversity combining mode with the optimal signal combining performance to carry out signal combining.
Exemplarily, referring to fig. 2, a schematic structural diagram of a diversity combining mode selection device (i.e., a signal receiving end) based on multi-antenna diversity reception according to an embodiment of the present application is provided, where the signal receiving end is provided with N antennas and corresponding receivers, and each antenna and corresponding receiver is used for receiving a signal of a corresponding signal branch (i.e., a channel). The signals are transmitted to a processor, which is generally a baseband processor, through respective receivers, and the processor processes the respective diversity signals, and combines the diversity signals, thereby implementing signal diversity reception and combining at a signal receiving end. It can be understood that, when a signal transmitting end transmits a piece of information to a signal receiving end, multiple signal copies corresponding to the same piece of information are generated through multipath fading. And the signal receiving end independently receives each signal copy through each diversity antenna, thereby completing the diversity reception of the signals.
Further, based on the received multiple signal copies, by determining the signal power and the noise power of each signal copy, and calculating the ratio of the signal power and the noise power, the corresponding signal-to-noise ratio can be obtained. It can be understood that the signal-to-noise ratio directly affects the output result of the combined signal, and the performance evaluation of the combined signal can be further performed by determining the signal-to-noise ratio of each signal branch.
S120, evaluating the signal combination performance of each diversity combination mode based on the signal-to-noise ratio, the signal power and the noise power of each signal branch to obtain a corresponding performance evaluation result, and selecting the corresponding diversity combination mode to perform signal combination of a plurality of signal copies corresponding to the current signal transmitting end according to the performance evaluation result, wherein the diversity combination mode comprises a selective combination mode, a maximum ratio combination mode and an equal gain combination mode;
s130, binding the signal transmitting terminal and the correspondingly selected diversity combining mode to construct and store a mode selection relation, wherein the mode selection relation is used for providing the diversity combining mode query corresponding to the signal transmitting terminal.
Specifically, a signal combination formula is provided:
wherein, akWeight coefficient representing the k-th signal copy (here, a is taken)1～aM) The weighting coefficient is influenced by the signal-to-noise ratio of the corresponding branch, and the greater the signal-to-noise ratio is, the weighting coefficient akThe larger, rkRepresenting the input of the kth signal copy (here taking r)1～rM) M denotes the number of signal copies, i.e. the number of diversity antennas, and r (t) denotes the output of the combined signal.
And based on the signal combination formula, combining the signal-to-noise ratios of the signal branches which are determined in advance, and correspondingly performing signal combination performance evaluation of a selection combination mode, a maximum ratio combination mode and an equal gain combination mode. In the selective combiner, only one effective weighting coefficient is provided, and the weighting coefficients corresponding to the rest of the signal copies are all 0. The signal combining formula of the selective combining mode can be expressed as:
r(t1)＝amaxrmax
wherein, amaxRepresenting the weighting factor, r, corresponding to the signal branch having the greatest signal-to-noise ratiomaxThe signal replica, r (t), representing the signal received by the signal branch with the greatest signal-to-noise ratio1) Indicating the output result of the selective combining.
The maximum ratio combining mode is to weight each signal branch, and the weighting coefficient a of each signal branchkWith corresponding signal envelope rkProportional to (i.e. signal replica input) and noise power NkIn inverse proportion. Then the signal of the maximal ratio combining modeThe consolidated formula can be expressed as:
wherein, akWeight coefficient representing the k-th signal copy (here, a is taken)1～aM)，rkRepresenting the input of the kth signal copy (i.e. the signal envelope), M represents the number of signal copies, i.e. the number of diversity antennas, r (t)2) Output result of the combined signal, N, representing the maximal ratio combining modekRepresenting the noise power.
The equal gain combining mode does not need to weight the signals, the signals of each signal branch are added by equal gain, and the signal combining formula of the equal gain combining mode can be expressed as:
wherein r iskRepresenting the input of the k-th signal copy, M representing the number of signal copies, i.e. the number of diversity antennas, r (t)3) An output result of the combined signal representing the equal gain combining mode.
Based on the known signal-to-noise ratio, signal power and noise power, and in combination with a preset weighting coefficient conversion mode, the corresponding weighting coefficient can be determined according to the signal-to-noise ratio, signal power and noise power information. Then, based on the signal combination formula of each diversity combination mode, the combined signal output result of each diversity combination mode can be determined.
And further based on the output results of the combined signals of the three diversity combining modes, namely the output results of the three combined signals through comparison, evaluating the signal combining performance of the corresponding diversity combining mode to obtain the corresponding performance evaluation result. And comparing the values of the three output results to determine the maximum output result of the selected output value, and determining that the diversity combining mode corresponding to the output result has the current best signal combining performance. Then, the information signals are combined in the diversity combining mode, and for a plurality of signal copies transmitted by the subsequent corresponding signal transmitting end, the predetermined diversity combining mode with the optimal signal combining performance is adopted for signal combining, so that the adaptive selection of the diversity combining mode in the embodiment of the application is completed, and the processing effect of signal combining is optimized. It should be noted that the above signal combining performance evaluation is only one implementation way for evaluating the signal combining performance according to the embodiment of the present application, and in practical application, the signal combining performance may also be determined according to the error rates of the combined signals of the three diversity combining modes according to actual evaluation requirements. There are many ways to evaluate the signal combining performance of the diversity combining mode in the prior art, and the embodiments of the present application are not limited herein.
Further, based on the determined diversity combining mode with the optimal signal combining performance, the embodiment of the present application correspondingly binds the diversity combining mode with the signal transmitting end, and constructs a mode selection relationship, so as to query the corresponding diversity combining mode for signal combining according to the mode selection relationship when subsequently receiving the signal copy transmitted by the corresponding signal transmitting end.
In one embodiment, when signal combining is performed according to the selected diversity combining mode, the signal copies are screened for signal combining based on the initial signal quality parameters by determining the initial signal quality parameters of each of the signal copies. In particular, the initial signal quality parameter value of the signal replica is determined by the signal reception power, the signal reception strength, the channel instantaneous quality value and/or the interference signal strength of the corresponding diversity antenna. Wherein the channel instantaneous quality value represents the channel quality, channel matrix feedback, signal response and/or interference information for the corresponding diversity antenna. The various types of parameters are measured by corresponding signal replicas and antenna parameters. Further, in order to quantize the initial signal quality parameter value, a calculation formula of the initial signal quality parameter value is provided to quantize the signal quality of the signal replica, and the calculation formula of the initial signal quality parameter value is:
f＝ω1P+ω2d1+ω3h+ω4d2
wherein f is an initial signalThe value of the signal quality parameter, P is the signal received power, d1For signal received strength, h is the instantaneous quality value of the channel, d2For interfering signal strength, omega1，ω2，ω3And ω4The influence factors are determined according to actual tests and can be set according to actual influences of various types of parameters on the initial signal quality parameter values. Based on the initial signal quality parameter value calculation formula, the initial signal quality parameter value of each signal copy can be determined. It should be noted that, in practical applications, according to different signal quality evaluation criteria, a plurality of different manners may be selected to evaluate the signal quality of each signal copy, and a corresponding quantization formula is set accordingly. The above formula is only one calculation method for calculating the initial signal quality parameter value in the embodiment of the present application, and various different measurement and calculation formulas may be selected according to actual measurement and calculation requirements, which is not described herein again. It can be understood that, for a part of the signal copies with relatively poor signal quality, the signal copies can be screened out, and only a part of the signal copies with relatively good signal quality is reserved for diversity combining, so that the diversity combining processing efficiency can be improved, and the signal quality of the diversity combined signal can be ensured.
In one embodiment, after signal combining is performed according to the selected diversity combining mode, the embodiment of the present application further performs selection verification of the diversity combining mode. Referring to fig. 3, the diversity combining mode selection verification process includes:
s121, extracting a combined signal obtained by combining the corresponding diversity combining modes;
and S122, measuring and calculating a signal quality parameter of the combined signal, and performing selection verification of the corresponding diversity combining mode based on the signal quality parameter.
Specifically, after the diversity combining mode is determined to perform signal combining, the signal quality parameter of the combined signal is calculated based on the combined signal obtained by combining the diversity combining mode. The signal quality parameter may be obtained by averaging the initial signal quality parameters of the respective signal copies. Based on the calculation mode of the initial signal quality parameter values of the signal copies, the initial signal quality parameter values of the signal copies are superposed and averaged to determine the signal quality parameters of the combined signal. And comparing the signal quality parameter with a preset signal quality parameter threshold, wherein if the signal quality parameter is lower than the signal quality parameter threshold, the signal quality of the current combined signal does not reach the standard, and the signal combining performance of the current diversity combining mode cannot meet the requirement. Then the corresponding selection verification result is output at this time, and the selection error of the current diversity combining mode is judged.
Further, the process flow of the diversity combining mode selection verification includes:
s1221, comparing the signal quality parameters with preset signal quality parameter thresholds, and outputting corresponding selection verification results;
s1222, if the selection verification result determines that the corresponding diversity combining mode is selected incorrectly, re-selecting the diversity combining mode.
And when the signal quality parameter is lower than the signal quality parameter threshold value, judging that the corresponding diversity combining mode is selected wrongly, and outputting a verification result of the mode selection mistake. Based on this verification result, the diversity combining mode is reselected with reference to the above steps S110 to S120.
In some embodiments, when performing selection verification of the corresponding diversity combining mode based on the signal quality parameter of the combined signal, according to a plurality of combined signals combined by the combining mode, a set number of combined signals combined by the corresponding diversity combining mode are randomly extracted, and selection verification of the diversity combining mode is performed based on the plurality of randomly extracted combined signals. And if the combined signals with the signal quality parameters lower than the signal quality parameter threshold value in the plurality of combined signals reach the set number threshold value, judging that the current diversity combination mode is selected wrongly. The diversity combining mode is selected and verified through the plurality of combined signals, so that the contingency of the verification result can be avoided, and the accuracy of the verification result is guaranteed.
Further, in the embodiment of the present application, after determining that the diversity combining mode selection is mistakenly performed again for diversity combining mode selection, the corresponding mode selection relationship is also unbound, and the mode selection relationship is reconstructed based on the reselected diversity combining mode. It can be understood that, since the previously selected diversity combining mode is verified as an erroneous selection, the corresponding pre-bound and stored mode selection relationship needs to be unbound, and the mode selection relationship is reconstructed according to the newly selected diversity combining mode, so as to determine the diversity combining mode for signal combining subsequently according to the mode selection relationship directly queried by the corresponding signal transmitting end.
In addition, in one embodiment, based on the pre-constructed mode selection relationship, when multiple signal copies transmitted by corresponding signal transmitting terminals are subsequently received, the corresponding diversity combining mode is queried based on the mode selection relationship for signal combining. Specifically, referring to fig. 4, the diversity combining mode query process includes:
s131, receiving a plurality of signal copies corresponding to the same information, analyzing the signal copies and extracting signal transmitting terminal information;
s132, inquiring the mode selection relation based on the signal transmitting terminal information, and determining the corresponding diversity combining mode to carry out signal combination of the current signal copy.
The diversity combining mode bound with the corresponding signal transmitting terminal can be determined by analyzing the signal transmitting terminal information contained in the signal copies and inquiring the prestored mode selection relation based on the signal transmitting terminal information based on a plurality of signal copies corresponding to the same information transmitted by one signal transmitting terminal, and the signal combining of the current signal copies is carried out in the diversity combining mode. Therefore, the selection interest rate of the diversity combining mode can be improved, and the signal processing combining efficiency is optimized while the signal combining performance is guaranteed.
Referring to fig. 5, a signal combining flowchart of the embodiment of the present application is provided, where the embodiment of the present application evaluates signal combining performance of each diversity combining mode based on related parameters of signal copies by receiving multiple signal copies of a signal transmitting end, and further selects a diversity combining mode with best signal combining performance for signal combining based on an evaluation result. On the other hand, based on the selected diversity combining mode, the diversity combining mode and the corresponding signal transmitting terminal are bound to construct a mode selection relation for subsequent diversity combining mode query.
The multiple signal copies corresponding to the same information and transmitted by the signal transmitting end are received through multiple antenna diversity, the signal combining performance of each diversity combining mode is evaluated based on the signal-to-noise ratio of each signal branch corresponding to each signal copy, a corresponding performance evaluation result is obtained, the corresponding diversity combining mode is selected according to the performance evaluation result to combine the signals of the multiple signal copies corresponding to the current signal transmitting end, the signal transmitting end and the corresponding selected diversity combining mode are bound to construct and store a mode selection relation, and the mode selection relation is used for providing the query of the diversity combining mode corresponding to the signal transmitting end. By adopting the technical means, the diversity combining mode can be adaptively selected based on performance evaluation to carry out signal combination on the current diversity signals, so that the signal quality of the combined signals is guaranteed, and the signal receiving and processing effect is optimized.
Example two:
based on the above embodiments, fig. 6 is a schematic structural diagram of a diversity combining mode selection apparatus based on multi-antenna diversity reception according to a second embodiment of the present application. Referring to fig. 6, the diversity combining mode selecting apparatus based on multi-antenna diversity reception provided in this embodiment specifically includes: a receiving module 21, a selecting module 22 and a binding module 23.
The receiving module 21 is configured to receive multiple signal copies corresponding to the same information and transmitted by a signal transmitting end through multiple antenna diversity, determine, based on each signal copy, signal power and noise power of a signal branch corresponding to each diversity antenna, and determine, based on the signal power and the noise power, a signal-to-noise ratio of each signal branch;
the selection module 22 is configured to evaluate signal combining performance of each diversity combining mode based on a signal-to-noise ratio of each signal branch to obtain a corresponding performance evaluation result, and select the corresponding diversity combining mode according to the performance evaluation result to perform signal combining of multiple signal copies corresponding to a current signal transmitting end, where the diversity combining mode includes a selective combining mode, a maximum ratio combining mode, and an equal gain combining mode;
the binding module 23 is configured to bind the signal transmitting end and the correspondingly selected diversity combining mode to construct and store a mode selection relationship, where the mode selection relationship is used to provide the query of the diversity combining mode corresponding to the signal transmitting end.
The multiple signal copies corresponding to the same information and transmitted by the signal transmitting end are received through multiple antenna diversity, the signal combining performance of each diversity combining mode is evaluated based on the signal-to-noise ratio of each signal branch corresponding to each signal copy, a corresponding performance evaluation result is obtained, the corresponding diversity combining mode is selected according to the performance evaluation result to combine the signals of the multiple signal copies corresponding to the current signal transmitting end, the signal transmitting end and the corresponding selected diversity combining mode are bound to construct and store a mode selection relation, and the mode selection relation is used for providing the query of the diversity combining mode corresponding to the signal transmitting end. By adopting the technical means, the diversity combining mode can be adaptively selected based on performance evaluation to carry out signal combination on the current diversity signals, so that the signal quality of the combined signals is guaranteed, and the signal receiving and processing effect is optimized.
The diversity combining mode selection apparatus based on multi-antenna diversity reception provided in the second embodiment of the present application may be used to execute the diversity combining mode selection method based on multi-antenna diversity reception provided in the first embodiment, and has corresponding functions and beneficial effects.
Example three:
an embodiment of the present application provides an electronic device, and with reference to fig. 7, the electronic device includes: a processor 31, a memory 32, a communication module 33, an input device 34, and an output device 35. The number of processors in the electronic device may be one or more, and the number of memories in the electronic device may be one or more. The processor, memory, communication module, input device, and output device of the electronic device may be connected by a bus or other means.
The memory 32 is a computer readable storage medium, which can be used for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the diversity combining mode selecting method based on multi-antenna diversity reception (for example, the receiving module, the selecting module, and the binding module in the diversity combining mode selecting apparatus based on multi-antenna diversity reception) according to any embodiment of the present application. The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory may further include memory located remotely from the processor, and these remote memories may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication module 33 is used for data transmission.
The processor 31 executes software programs, instructions and modules stored in the memory to perform various functional applications of the device and data processing, i.e. to implement the diversity combining mode selection method based on multi-antenna diversity reception as described above.
The input device 34 may be used to receive entered numeric or character information and to generate key signal inputs relating to user settings and function controls of the apparatus. The output device 35 may include a display device such as a display screen.
The electronic device provided above can be used to execute the diversity combining mode selection method based on multi-antenna diversity reception provided in the first embodiment, and has corresponding functions and advantages.
Example four:
the present embodiments also provide a storage medium containing computer executable instructions, which when executed by a computer processor, are configured to perform a method for diversity combining mode selection based on multi-antenna diversity reception, where the method for diversity combining mode selection based on multi-antenna diversity reception includes: receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, determining the signal power and the noise power of a signal branch corresponding to each diversity antenna based on each signal copy, and determining the signal-to-noise ratio of each signal branch based on the signal power and the noise power; evaluating the signal combination performance of each diversity combination mode based on the signal-to-noise ratio of each signal branch to obtain a corresponding performance evaluation result, and selecting the corresponding diversity combination mode according to the performance evaluation result to perform signal combination of a plurality of signal copies corresponding to a current signal transmitting end, wherein the diversity combination mode comprises a selective combination mode, a maximum ratio combination mode and an equal gain combination mode; and binding the signal transmitting terminal and the correspondingly selected diversity combining mode to construct and store a mode selection relation, wherein the mode selection relation is used for providing the diversity combining mode query corresponding to the signal transmitting terminal.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media residing in different locations, e.g., in different computer systems connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium containing computer-executable instructions provided in this embodiment of the present application is not limited to the diversity combining mode selection method based on multi-antenna diversity reception described above, and may also perform related operations in the diversity combining mode selection method based on multi-antenna diversity reception provided in any embodiment of the present application.
The diversity combining mode selecting apparatus, the storage medium, and the electronic device based on multi-antenna diversity reception provided in the foregoing embodiments may perform the diversity combining mode selecting method based on multi-antenna diversity reception provided in any embodiment of the present application, and refer to the diversity combining mode selecting method based on multi-antenna diversity reception provided in any embodiment of the present application without detailed technical details in the foregoing embodiments.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (5)
1. A diversity combining mode selection method based on multi-antenna diversity reception is characterized by comprising the following steps:
receiving a plurality of signal copies corresponding to the same information and transmitted by a signal transmitting end through multi-antenna diversity, determining the signal power and the noise power of a signal branch corresponding to each diversity antenna based on each signal copy, and determining the signal-to-noise ratio of each signal branch based on the signal power and the noise power;
evaluating the signal combination performance of each diversity combination mode based on the signal-to-noise ratio, the signal power and the noise power of each signal branch to obtain a corresponding performance evaluation result, and selecting the corresponding diversity combination mode to perform signal combination of a plurality of signal copies corresponding to the current signal transmitting end according to the performance evaluation result, wherein the diversity combination mode comprises a selective combination mode, a maximum ratio combination mode and an equal gain combination mode; binding the signal transmitting terminal and the correspondingly selected diversity combining mode to construct and store a mode selection relation, wherein the mode selection relation is used for providing the diversity combining mode query corresponding to the signal transmitting terminal;
selecting the corresponding diversity combining mode according to the performance evaluation result to perform signal combining of a plurality of signal copies corresponding to the current signal transmitting end, and then:
extracting a combined signal obtained by combining the corresponding diversity combining modes;
measuring and calculating a signal quality parameter of the combined signal, and performing corresponding selection verification of the diversity combining mode based on the signal quality parameter;
extracting a combined signal combined by the corresponding diversity combining mode, comprising:
randomly extracting a set number of combined signals obtained by combining the diversity combining modes;
performing selection verification of the corresponding diversity combining mode based on the signal quality parameter, including:
comparing the signal quality parameters with preset signal quality parameter thresholds, and outputting corresponding selection verification results;
if the selection verification result judges that the corresponding diversity combining mode is selected wrongly, the diversity combining mode is selected again;
unbinding the corresponding mode selection relationship and reconstructing the mode selection relationship based on the reselected diversity combining mode.
2. The method as claimed in claim 1, wherein selecting the corresponding diversity combining mode to perform signal combining of multiple signal copies corresponding to a current signal transmitting end according to the performance evaluation result comprises:
and determining an initial signal quality parameter of each signal copy, and screening the signal copies for signal combination based on the initial signal quality parameters.
3. The method of claim 1, wherein after the signal transmitting end and the corresponding selected diversity combining mode are bundled to form a mode selection relationship and stored, the method further comprises:
receiving a plurality of signal copies corresponding to the same information, analyzing the signal copies and extracting signal transmitting terminal information;
and inquiring the mode selection relation based on the signal transmitting terminal information, and determining the corresponding diversity combining mode to carry out signal combination of the current signal copy.
4. An electronic device, comprising:
a memory and one or more processors;
the memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method for diversity combining mode selection based on multiple antenna diversity reception according to any of claims 1-3.
5. A storage medium containing computer executable instructions for performing the method for diversity combining mode selection based on multiple antenna diversity reception according to any of claims 1-3 when executed by a computer processor.
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