WO2023231671A1

WO2023231671A1 - Combination clipping method and apparatus, and communication device

Info

Publication number: WO2023231671A1
Application number: PCT/CN2023/091399
Authority: WO
Inventors: 彭雅秋; 龚政委; 祁华礼
Original assignee: 华为技术有限公司
Priority date: 2022-05-30
Filing date: 2023-04-27
Publication date: 2023-12-07
Also published as: CN117201251A

Abstract

A combination clipping method and apparatus, and a communication device. The method comprises: determining M signals to be sent, wherein the M signals to be sent correspond to M frequency bands on a one-to-one basis, and M is an integer greater than 1; according to information of the M frequency bands, determining an equivalent combined signal of the M signals to be sent, so as to obtain a first equivalent combined signal; according to the first equivalent combined signal, determining a noise signal corresponding to each of the M signals to be sent, so as to obtain M noise signals; and according to the M noise signals, performing clipping processing on the M signals to be sent. Since information of a plurality of frequency bands corresponding to a plurality of signals to be sent is taken into consideration, a combined signal can be realistically reflected, such that the clipping accuracy can be improved.

Description

A combined path clipping method, device and communication equipment

This application claims priority to the Chinese patent application submitted to the China Patent Office on May 30, 2022, with application number 202210601051.4 and the application title "A combined path clipping method, device and communication equipment", the entire content of which is incorporated by reference. incorporated in this application.

Technical field

The embodiments of the present application relate to the field of communication technology, and in particular, to a combining and clipping method, device and communication equipment.

Background technique

In a wireless communication system, sending signals needs to pass through the baseband module, digital/analog or analog/digital conversion module, radio frequency module and antenna unit in sequence. The power amplifier (PA) in the radio frequency module is responsible for signal power amplification. PA performance is very sensitive to signal amplitude changes. Generally, PA performance is related to the peak-to-average power ratio (PAPR) of the signal. For example, if the instantaneous peak value of a signal with excessive PAPR exceeds the PA's peak capability, it will cause the PA to burn out. In order to avoid PA burning, the transmitted signal needs to be clipped through clipping technology to reduce the PAPR value of the signal within a certain range. However, clipping will introduce nonlinear distortion to the signal, which will eventually affect the detection performance of the signal. Therefore, the error vector magnitude (EVM) will be introduced in the design process to characterize the degree of nonlinear distortion. . The larger the EVM, the greater the nonlinear distortion. In a multi-frequency multi-carrier scenario, the improvement of PAPR makes the PA efficiency lower and lower, and as the frequency band increases, the PAPR deteriorates more seriously; on the other hand, the frequency band spacing and signal transmission rate require a higher-speed sampling rate, due to the device processing capabilities Limited, clipping operation cannot be performed at high-speed sampling rate. Therefore, in multi-frequency scenarios, how to clip signals accurately is very important.

Contents of the invention

The embodiments of the present application disclose a combined clipping method, device and communication equipment, which are used to improve the accuracy of clipping.

In the first aspect, the present application discloses a combined clipping method. The communication method can be applied to communication equipment, can also be applied to modules (for example, chips) in communication equipment, and can also be applied to communication equipment that can implement all or part of the communication equipment. Functional logic modules or software. The following description takes the execution subject being a communication device as an example. The combined clipping method may include:

The communication equipment determines M signals to be sent, and the M signals to be sent correspond to M frequency bands one-to-one, and M is an integer greater than 1;

Determine the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtain the first equivalent combined signal;

Determine the noise signal corresponding to each of the M signals to be sent according to the first equivalent combined signal, and obtain M noise signals;

The M signals to be sent are clipped according to the M noise signals.

In the embodiment of the present application, when determining the equivalent combined signal of multiple signals to be sent, the communication device considers the information corresponding to multiple frequency bands of the multiple signals to be sent, and can truly reflect the signal without increasing the sampling rate. The combined signal can improve the accuracy of the equivalent combined signal, which in turn can improve the accuracy of the noise signal, so that the signal to be sent can be accurately clipped, thereby improving the accuracy of clipping.

As a possible implementation, the frequency band information may include the zero frequency point, the center frequency point and the bandwidth of the frequency band. The communication device determines the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtains the first The combined signal can include:

According to the zero frequency point of the first frequency band and the zero frequency point of the second frequency band, the zero frequency point interval between the first frequency band and the second frequency band is determined. The first frequency band is the reference frequency band among M frequency bands, and the second frequency band is M Any frequency band other than the first frequency band among the frequency bands;

According to the zero frequency point and the center frequency point of the first frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the first frequency band to obtain the first frequency offset;

According to the zero frequency point and the center frequency point of the second frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the second frequency band, and obtain the second frequency offset;

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, equivalent combined signals of the M signals to be sent are determined to obtain a first equivalent combined signal.

In the embodiment of the present application, the communication device determines the equivalent combined signal of multiple signals to be sent based on the zero frequency point, center frequency point and bandwidth of the frequency band, which can improve the accuracy of the equivalent combined signal and thereby improve the determined noise signal accuracy, thereby improving clipping accuracy.

As a possible implementation manner, the communication device determines the equivalent combined signal of the M signals to be sent based on the zero frequency point interval, the first frequency offset, the second frequency offset, and the bandwidth of the second frequency band, and obtains the first The combined signal can include:

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, the equivalent phase offset between the first signal and the second signal is determined. The first signal is one of the M signals to be sent. The signal to be sent corresponding to the first frequency band, and the second signal is the signal to be sent corresponding to the second frequency band among the M signals to be sent;

Determine the equivalent signal of the second signal according to the equivalent phase offset;

The first equivalent combined signal is determined based on the equivalent signal of the first signal and the second signal.

In the embodiment of the present application, the communication device can equivalently generate the high-frequency signal after spectrum shifting based on the equivalent phase offset without increasing the sampling rate. Therefore, the accuracy of clipping can be improved without increasing the processing data.

As a possible implementation, the communication device determines the noise signal corresponding to each of the M signals to be sent based on the first equivalent combined signal. Obtaining the M noise signals may include:

Determine the first noise ratio according to the first equivalent combined signal;

The noise signal corresponding to each of the M signals to be sent is determined according to the first noise ratio, and M noise signals are obtained.

In the embodiment of the present application, the noise signal is allocated according to the ratio of the equivalent noise signal to the equivalent combined signal, that is, the noise ratio, rather than according to a fixed frequency band signal power ratio. The noise signals allocated on each frequency band vary with the amplitude of the equivalent combined signal at each moment. Allocating noise according to the ratio of noise to signal can improve the accuracy and flexibility of the noise signal.

As a possible implementation, the communication device determining the first noise ratio based on the first equivalent combined signal may include:

Determine the first equivalent noise signal according to the first equivalent combined signal and the noise improvement threshold;

The first noise ratio is determined based on the first equivalent combined signal and the first equivalent noise signal.

As a possible implementation, the communication device determines the noise signal corresponding to each of the M signals to be sent based on the first equivalent combined signal. Obtaining the M noise signals may also include:

Generate N groups of signals based on M signals to be sent, each group of N signals includes M signals corresponding to M frequency bands, and N is an integer greater than or equal to 1;

Determine the equivalent combined signals of M signals included in each group of N signals, and obtain N equivalent combined signals;

Determine the noise ratio based on each of the N equivalent combined signals, and obtain N noise ratios;

The communication device determines the noise signal corresponding to each of the M signals to be sent based on the first noise ratio. Obtaining the M noise signals may include:

According to the first noise ratio and the maximum noise ratio among the N noise ratios, determine each signal pair to be sent among the M signals to be sent. The corresponding noise signals are obtained, and M noise signals are obtained.

In the embodiment of the present application, by generating multiple sets of signals, the maximum noise ratio can be determined, thereby avoiding the problem of noise clipping caused by peak regeneration of signals after high-speed sampling.

As a possible implementation manner, the communication device performs clipping processing on the M signals to be sent based on the M noise signals, including:

Use the M signals to be sent to respectively subtract the noise signals of the corresponding frequency bands from the M noise signals.

As a possible implementation, the combined path clipping method may also include:

Send the clipped M signals to be sent.

Perform acceleration processing on the clipped M to-be-sent signals to obtain the sent signals;

The M signals to be sent after clipping processing include:

The communication device sends the transmission signal.

In the embodiment of the present application, accelerated processing of the clipped signal can increase the sampling rate of the signal, thereby improving the throughput rate of the communication system.

In the second aspect, the present application discloses a combining and clipping device, which can be applied to communication equipment, can also be applied to modules (for example, chips) in communication equipment, and can also be applied to realize all or Logic modules or software for some communication equipment functions. The combining and clipping device may include:

The first determination unit is used to determine M signals to be sent. The M signals to be sent correspond to M frequency bands one-to-one, and M is an integer greater than 1;

The second determination unit is used to determine the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtain the first equivalent combined signal;

The third determination unit is configured to determine the noise signal corresponding to each of the M signals to be sent based on the first equivalent combined signal, and obtain M noise signals;

The clipping unit is used to perform clipping processing on the M signals to be sent based on the M noise signals.

As a possible implementation, the second determination unit is specifically used to:

As a possible implementation manner, the second determination unit determines the equivalent combined signal of the M signals to be sent according to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, and obtains the third An equivalent combined signal includes:

As a possible implementation, the third determination unit is specifically used to:

As a possible implementation, the third determination unit determines the first noise ratio according to the first equivalent combined signal including:

As a possible implementation, the third determination unit is also specifically used to:

The third determination unit determines the noise signal corresponding to each of the M signals to be sent based on the first noise ratio, and the obtained M noise signals include:

According to the first noise ratio and the maximum noise ratio among the N noise ratios, the noise signal corresponding to each of the M signals to be sent is determined, and M noise signals are obtained.

As a possible implementation manner, the clipping unit is specifically configured to subtract the noise signals of corresponding frequency bands from the M noise signals using the M signals to be transmitted.

As a possible implementation, the combined circuit clipping device may also include:

The sending unit is used to send M signals to be sent after clipping processing.

The acceleration unit is used to accelerate the clipped M signals to be sent to obtain the sending signal;

The sending unit is specifically used to send the sending signal.

In a third aspect, the present application discloses a communication device. The communication device includes a processor. The processor is coupled to a memory. The memory is used to store programs or instructions. When the program or instructions are executed by the processor, the communication device causes the communication device to execute the above combined process. Road clipping method.

In a fourth aspect, the present application discloses a communication device. The communication device includes a processor and a memory. The memory is used to store programs or instructions. When the program or instructions are executed by the processor, the communication device performs the above combined path clipping method. .

In a fifth aspect, this application discloses a communication device, which includes a transceiver, a processor, and optionally a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the transceiver. When the processor executes the computer program or instructions, the communication device is caused to perform the above combined path clipping method.

In a sixth aspect, the present application discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is run, the above methods are implemented.

In a seventh aspect, the present application discloses a computer program product. The computer program product includes: computer program code. When the computer program code is run on a processor, the above methods are executed.

In an eighth aspect, the present application discloses a chip system. The chip system includes a processor and is used to implement the functions in each of the above methods. In a possible design, the chip system also includes a memory for storing program instructions and/or data. The chip system may be composed of chips, or may include chips and other discrete devices.

The beneficial effects of the above-mentioned second to eighth aspects are similar to the beneficial effects of the corresponding methods in the first aspect. For detailed description, reference can be made to the beneficial effects of the corresponding methods.

Description of the drawings

Figure 1 is a schematic diagram of a network architecture disclosed in an embodiment of this application;

Figure 2 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application;

Figure 3 is a schematic flow chart of a combined path clipping method disclosed in the embodiment of the present application;

Figure 4 is a frequency domain schematic diagram of a multi-frequency signal disclosed in the embodiment of the present application;

Figure 5 is a schematic diagram of combined path clipping disclosed in the embodiment of the present application;

Figure 6 is a schematic diagram of another combined path clipping disclosed in the embodiment of the present application;

Figure 7 is a schematic structural diagram of a combining and clipping device disclosed in the embodiment of the present application;

Figure 8 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

Figure 9 is a schematic structural diagram of yet another communication device disclosed in the embodiment of the present application.

Detailed ways

The embodiments of the present application disclose a combined clipping method, device and communication equipment, which are used to improve the accuracy of clipping. The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In order to better understand the embodiment of the present application, the network architecture of the embodiment of the present application is first described below. Please refer to Figure 1. Figure 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present application. As shown in Figure 1, the network architecture may include a terminal device 101 and a network device 102. The communication between the terminal device 101 and the network device 102 may include uplink communication (ie, communication from the terminal device 101 to the network device 102) and downlink communication (ie, communication from the network device 102 to the terminal device 101). In uplink communication, the terminal device 101 is used to send uplink signals to the network device 102; the network device 102 is used to receive the uplink signals from the terminal device 101. The uplink signal can be uplink control information and can be transmitted through the physical uplink control channel (PUCCH). The uplink signal can also be uplink data, which can be transmitted through the physical uplink share channel (PUSCH). In downlink communication, the network device 102 is used to send downlink signals to the terminal device 101; the terminal device 101 is used to receive downlink signals from the network device 102. The downlink signal can be downlink control information and can be transmitted through the physical downlink control channel (PDCCH). The downlink signal can also be downlink data, which can be transmitted through the physical downlink share channel (PDSCH).

Terminal equipment can be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and refers to equipment that provides voice and/or data connectivity to users. The terminal device can be a mobile phone, a handheld terminal, a customer premise equipment (CPE), a laptop, a subscriber unit, a cellular phone, a smart phone, or a computing device. , wireless data card, personal digital assistant (PDA) computer, tablet computer, computer with wireless transceiver function, wireless modem, tactile terminal device, handheld device (handheld), laptop Computer (laptop computer), session initiation protocol (SIP) phone, cordless phone or wireless local loop (WLL) station, machine type communication (MTC) terminal, Wearable devices (such as smart watches, smart bracelets, pedometers, etc.), vehicle-mounted terminal devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), extended reality (XR) terminal devices , virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control, smart home equipment (such as refrigerators, TVs, air conditioners) (electricity meter, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving (self driving), wireless terminals in remote medical surgery, wireless data cards, wireless terminals in smart grids , wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flying equipment (such as smart robots, hot air balloons, drones, airplanes) etc.) or other devices that can access the network.

In addition, the terminal device may also be a terminal device in a future communication system (such as a sixth generation (6th generation, 6G) communication system, etc.) or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc. . Illustratively, 6G networks can further expand the form and function of fifth generation (5th generation, 5G) communication terminal equipment. 6G terminal equipment includes but is not limited to cars, cellular network terminal equipment (integrated satellite terminal functions), drones, Internet of things (IoT).

Network equipment can be access network equipment or core network equipment.

Access network equipment is a radio access network (RAN) device or node that provides wireless access to terminal equipment. It has wireless transceiver functions and is mainly responsible for wireless resource management and quality of service (QoS) on the air interface side. ) functions such as stream management, data compression and encryption. Access network equipment can include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), pico base stations, small stations, relay stations, access point satellites, balloon stations, etc. Access network equipment may also include evolved base stations (evolved Node B, eNB or eNodeB) in long term evolution (LTE). The access network equipment can also include the next generation base station (next generation Node B, gNB) base station gNB or transmission and receiving point (TRP) in the 5G network. Access network equipment can also include base stations evolved after the third generation partnership project (3GPP), or base stations in future evolved PLMNs, broadband network gateways (BNG), 3GPP aggregation switches, or Non-3GPP access equipment, access point (AP), transmitting point (TP), mobile switching center, etc. in wireless fidelity (WiFi) system, or device-to-device (device) Devices that undertake base station functions in -to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications.

Core network equipment refers to equipment in the core network (CN) that provides business support for terminal equipment. It is mainly responsible for registration, call connection, billing, mobility management, providing user connections, user management, and business management. Complete functions such as bearer, data processing and routing. Core access network equipment can correspond to different equipment in different communication systems. For example, in the fourth generation (4th generation, 4G) communication system, it may correspond to one or more of the mobility management entity (mobility management entity, MME), serving gateway (serving gateway, S-GW), etc. For another example, in the 5G communication system, it can correspond to the access and mobility management function (AMF) network element, the session management function (SMF) network element, and the user plane function (user plane function). One or more network elements in UPF) network elements, etc. In the next generation communication system or future communication system, it may be one or more network elements, equipment or entities that provide service support for terminal equipment.

It should be noted that the network architecture shown in Figure 1 is not limited to only include the terminal device 101 and network device 102 shown in the figure, but may also include other terminal devices and network devices not shown in the figure. Specifically, this application is in No more enumeration here.

The above network architecture can be applied to 5G communication systems, and can also be applied to narrowband-internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate GSM Evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronous code division multiple access System(time communication systems evolved after 5G such as division-synchronization code division multiple access (TD-SCDMA) and 6G.

In order to better understand the embodiment of the present application, the structure of the communication device of the embodiment of the present application is first described below. Please refer to Figure 2. Figure 2 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application. As shown in Figure 2, the communication device may include a baseband module, a digital/analog or analog/digital conversion module, a radio frequency module and an antenna. The baseband module is used for signal processing such as modulation and demodulation, channel encoding and decoding, and source encoding and decoding. Digital/analog or analog/digital conversion module, used to convert digital signals to analog signals, or analog signals to digital signals. Radio frequency module is used to amplify data signals or analog signals. Antenna, used to send or receive signals.

The communication device can be a network device in the above network architecture, or a terminal device in the above network architecture, or other devices with baseband modules, digital/analog or analog/digital conversion modules, radio frequency modules and antennas. This is not limited.

In order to better understand the embodiments of the present application, the relevant technologies of the embodiments of the present application are first described below. At present, a commonly used combined clipping method is: directly adding the amplitudes of multiple frequency band signals to obtain an equivalent combined signal, determining the noise signal of the multiple frequency band signals based on the equivalent combined signal and power, and then determining the noise signal of the multiple frequency band signals based on the equivalent combined signal and power. The noise signal of the frequency band signal performs clipping processing on the multiple frequency band signals. In the above combined clipping method, the equivalent combined signal is directly added by the amplitude of multiple frequency band signals, without considering the information of different frequency bands, and cannot truly reflect the combined signal, thus reducing the accuracy of clipping. In addition, since the combined equivalent signal obtained by direct addition of amplitudes is larger than the amplitude of the real equivalent signal, the determined noise signal is too large, and there is a problem of over-clipping during clipping, resulting in a large EVM loss.

Based on the above network architecture and communication equipment, please refer to Figure 3. Figure 3 is a schematic flowchart of a combined path clipping method disclosed in an embodiment of the present application. The combined clipping method can be applied to communication devices, such as the first communication device. As shown in Figure 3, the combined clipping method may include the following steps.

301. The first communication device determines M signals to be sent.

In the case where the first communication device needs to send a signal to the second communication device, the first communication device may determine M signals to be sent. The M signals to be sent correspond to the M frequency bands one-to-one, that is, each of the M frequency bands corresponds to a signal to be sent to the second communication device, and different frequency bands correspond to different signals to be sent. The M signals to be sent are different, which can be understood as the amplitudes of the M signals to be sent are different, the phases of the M signals to be sent are different, or the amplitudes and phases of the M signals to be sent are different. The M frequency bands are frequency bands used for transmitting signals to the second communication device. The M signals to be sent are zero-frequency time domain signals that need to be sent to the second communication device, that is, low-frequency time domain signals. The M frequency bands may be divided into M continuous frequency bands or M discontinuous frequency bands. M is an integer greater than 1.

302. The first communication device determines the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtains the first equivalent combined signal.

After the first communication device determines the M signals to be sent, it can determine the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtain the first equivalent combined signal.

The frequency band information may include the zero frequency point, center frequency point and bandwidth of the frequency band. The zero frequency point of the frequency band, that is, the zero frequency of the frequency band, is the frequency point in the frequency band where the frequency is close to zero. The center frequency point of the frequency band is the center frequency of the frequency band, which is also the average of the start frequency and end frequency of the frequency band. The bandwidth of a frequency band is the width of the frequency band, that is, the difference between the end frequency and the start frequency of the frequency band.

The first communication device may determine the zero frequency point interval between the first frequency band and the second frequency band based on the zero frequency point of the first frequency band and the zero frequency point of the second frequency band, that is, the zero frequency point of the first frequency band and the second frequency band The absolute value of the difference between the zero frequency points is determined as the zero frequency point interval between the first frequency band and the second frequency band. It can be seen that the zero frequency point interval between the two frequency bands is a value greater than 0.

The first frequency band is a reference frequency band among the M frequency bands, and the second frequency band is any frequency band among the M frequency bands except the first frequency band.

The first frequency band may be determined based on the frequencies of M frequency bands. For example, the first frequency band may be the frequency band with the lowest frequency among the M frequency bands, the frequency band with the highest frequency among the M frequency bands, or the frequency band with the middle frequency among the M frequency bands, which is not limited here.

The first frequency band may also be determined based on the bandwidth of M frequency bands. For example, the first frequency band may be the frequency band with the lowest bandwidth among the M frequency bands, the frequency band with the highest bandwidth among the M frequency bands, or the frequency band with the middle bandwidth among the M frequency bands, which is not limited here.

The first frequency band can also be determined based on other information of the M frequency bands, which is not limited here.

The first communication device can determine the frequency offset between the zero frequency point and the center frequency point of the first frequency band based on the zero frequency point and the center frequency point of the first frequency band, that is, the difference between the center frequency point and the zero frequency point of the first frequency band. The value determines the frequency offset between the zero frequency point and the center frequency point of the first frequency band, and the first frequency offset is obtained. The first frequency offset may be a value greater than 0 or a value less than 0.

The first communication device can determine the frequency offset between the zero frequency point and the center frequency point of the second frequency band based on the zero frequency point and the center frequency point of the second frequency band, that is, the difference between the center frequency point and the zero frequency point of the second frequency band. The value determines the frequency offset between the zero frequency point and the center frequency point of the second frequency band, and obtains the second frequency offset. The second frequency offset may be a value greater than 0 or a value less than 0.

Please refer to Figure 4. Figure 4 is a frequency domain schematic diagram of a multi-frequency signal disclosed in an embodiment of the present application. In Figure 4, the frequency increases from left to right. As shown in Figure 4, the frequency of the second frequency band is greater than the frequency of the first frequency band. The center frequency point of the first frequency band is greater than the zero frequency point of the first frequency band, therefore, the first frequency deviation is greater than 0. The center frequency point of the first frequency band is smaller than the zero frequency point of the first frequency band, therefore, the second frequency deviation is smaller than 0.

The first communication device may determine the equivalent combined signal of the M signals to be sent based on the zero frequency point interval between the first frequency band and the second frequency band, the first frequency offset, the second frequency offset, and the bandwidth of the second frequency band, The first equivalent combined signal is obtained.

The first communication device may determine the equivalent value between the first signal and the second signal based on the zero frequency point interval between the first frequency band and the second frequency band, the first frequency offset, the second frequency offset, and the bandwidth of the second frequency band. Phase offset, then the equivalent signal of the second signal can be determined based on the equivalent phase offset between the first signal and the second signal, and then the first equivalent signal can be determined based on the equivalent signal of the first signal and the second signal. Combined signal. The first signal is a signal to be sent corresponding to the first frequency band among the M signals to be sent, and the second signal is a signal to be sent corresponding to the second frequency band among the M signals to be sent.

The following takes M as 2 as an example to illustrate the process of determining the equivalent combined signal of two signals to be sent.

For example, assume that the first signal is x ₁ (n), the second signal is x ₂ (n), the first frequency offset is Δ ₁ , the second frequency offset is Δ ₂ , and the zeros of the first frequency band and the second frequency band are The frequency point interval is F ₀ , and the bandwidth of the second frequency band is F _s . n represents the number of signal sequences included in the signal to be sent (ie, the first signal and the second signal). The equivalent phase offset β between the first signal and the second signal can be expressed as follows:

Among them, floor(.) means rounding down.

It should be understood that formula (1) determines the relationship between the first signal and the second signal based on the zero frequency point interval between the first frequency band and the second frequency band, the first frequency offset, the second frequency offset, and the bandwidth of the second frequency band. The equivalent phase shift between For example, the first communication device may also determine the equivalent phase offset between the first signal and the second signal through various modified formulas of formula (1). For another example, the first communication device can also determine the equivalent phase offset between the first signal and the second signal through other formulas, as long as these formulas include the zero frequency point interval between the first frequency band and the second frequency band, the The first frequency offset, the second frequency offset and the bandwidth of the second frequency band are sufficient.

The equivalent signal x′ ₂ (n) of the second signal can be expressed as follows:

It should be understood that formula (2) is an exemplary description of determining the equivalent signal of the second signal based on the equivalent phase offset between the first signal and the second signal, and does not constitute a limitation thereto. For example, the first communication device may also determine the equivalent signal of the second signal through various modified formulas of formula (2). For another example, the first communication device may also determine the equivalent signal of the second signal through other formulas, as long as these formulas include the equivalent phase offset between the first signal and the second signal.

The first equivalent combined signal can be expressed as follows:
x(n)＝x ₁ (n)+x′ ₂ (n) (3)

It can be seen that the equivalent combined signal corresponding to multiple signals in multiple frequency bands is the sum of the equivalent signals corresponding to the reference frequency band and the signals corresponding to the remaining frequency bands, that is, the equivalent combined signal is a vector combined signal of multiple signals.

303. The first communication device determines the noise signal corresponding to each of the M signals to be sent based on the first equivalent combined signal, and obtains M noise signals.

After the first communication device obtains the first equivalent combined signal, it can determine the noise signal corresponding to each of the M signals to be sent based on the first equivalent combined signal, and obtain M noise signals.

In one case, the first communication device may first determine the first noise ratio based on the first equivalent combined signal, and then directly determine the noise signal corresponding to each of the M signals to be sent based on the first noise ratio, M noise signals are obtained.

The first communication device may determine the first equivalent noise signal based on the first equivalent combined signal and the noise improvement threshold, that is, determine the difference between the amplitude of the first equivalent combined signal and the noise improvement threshold as the first equivalent The amplitude of the noise signal determines the phase of the first equivalent combined signal as the phase of the first equivalent noise signal. The first communication device can then determine the first noise ratio according to the first equivalent combined signal and the first equivalent noise signal, that is, determine the ratio of the amplitude of the first equivalent noise signal to the amplitude of the first equivalent combined signal as First noise ratio. The noise improvement threshold may be set according to the power amplifier capability of the first communication device, scene requirements, etc.

In another case, the first communication device can determine the first noise ratio based on the first equivalent combined signal, and can also generate N sets of signals based on M signals to be sent, and each set of signals in the N sets of signals includes M frequency bands. Corresponding M signals, N is an integer greater than or equal to 1. The first communication device can then determine equivalent combined signals of M signals included in each group of N signals, and obtain N equivalent combined signals, in the same way as determining the first equivalent combined signal, as described in detail Please refer to the corresponding description. The first communication device can then determine the noise ratio based on each of the N equivalent combined signals to obtain N noise ratios in the same manner as the first noise ratio is determined. For detailed description, please refer to the corresponding description. Then, the first communication device can determine the noise signal corresponding to each of the M signals to be sent based on the first noise ratio and the maximum noise ratio among the N noise ratios, and obtain M noise signals. The first communication device may use a sampling rate converter such as a fractional delay filter to generate N sets of signals based on M signals to be sent.

The following takes M as 2 as an example to illustrate the determination process of the noise signal.

For example, assuming the first equivalent combined signal x(n)=Ce ^jθ , the noise improvement threshold is TH ₁ . C is the amplitude of the first equivalent combined signal, and θ is the phase of the first equivalent combined signal. The first equivalent noise signal Z can be expressed as follows:
Z＝Ne ^jθ (4)
N＝|C|-TH ₁ (5)

The first noise ratio can be expressed as follows:
α=N/|C| (6)

The noise signal n ₁ of the first signal can be expressed as follows:
n ₁ =αx ₁ (n) (7)

The noise signal n ₂ of the second signal can be expressed as follows:
n ₂ = αx ₂ (n) (8)

304. The first communication device performs clipping processing on the M signals to be sent based on the M noise signals.

After obtaining the M noise signals, the first communication device can perform clipping processing on the M signals to be sent based on the M noise signals. The first communication device can use the M signals to be sent to respectively subtract the noise signals of corresponding frequency bands from the M noise signals to obtain the clipped M signals to be sent.

After the first communication device performs clipping processing on the M signals to be sent based on the M noise signals, the clipped M signals to be sent can be sent to the second communication device.

The first communication device may also perform accelerated processing on the clipped M signals to be sent to obtain the sending signal, and then send the sending signal to the second communication device. Accelerated processing can increase the sampling rate of the signal so that the throughput of the communication system can be increased.

Please refer to FIG. 5 , which is a schematic diagram of combined clipping disclosed in an embodiment of the present application. As shown in Figure 5, you can first determine the equivalent phase offset of signal 1 and the signal, then pass the signal 2 and the equivalent phase offset through a multiplier to obtain the equivalent signal of signal 2, and then combine the signal 1 and the equivalent phase offset of signal 2. The equivalent signal passes through an adder to obtain the equivalent combined signal of signal 1 and signal 2. The noise is improved according to the equivalent combined signal to obtain the equivalent noise signal. The noise ratio is determined based on the equivalent noise signal. The signal 1 is determined based on the noise ratio. and the noise signal of signal 2, pass signal 1 (or signal 2) and the noise signal of signal 1 (or signal 2) through a subtractor, and perform clipping processing on signal 1 (or signal 2).

Please refer to FIG. 6 , which is a schematic diagram of another combined path clipping disclosed in an embodiment of the present application. As shown in Figure 6, three signals to be sent A0, B0 and C0 are determined, and three sets of signals are generated based on A0, B0 and C0, namely A1, B1 and C1, A2, B2 and C2, and A3, B3 and C3. . Signals A0, A1, A2 and A3 correspond to bandwidth A, signals B0, B1, B2 and B3 correspond to bandwidth B, and signals C0, C1, C2 and C3 correspond to bandwidth C. The phase generator can generate or determine an equivalent phase offset between the signal corresponding to bandwidth B and the signal corresponding to bandwidth A based on the information of bandwidth A and the information of bandwidth B, and generate or determine the equivalent phase offset between the signal corresponding to bandwidth B and the signal corresponding to bandwidth A based on the information of bandwidth A and the information of bandwidth C. Determine the equivalent phase offset between the signal corresponding to bandwidth C and the signal corresponding to bandwidth A. The equivalent phase offset of the signal corresponding to bandwidth C and the signal corresponding to bandwidth A and the signal corresponding to bandwidth C are obtained through a multiplier to the equivalent signal of the signal corresponding to bandwidth C. The equivalent phase offset and bandwidth of the signal corresponding to bandwidth B and the signal corresponding to bandwidth A are The signal corresponding to B is passed through a multiplier to obtain the equivalent signal of the signal corresponding to bandwidth B. The equivalent signal of the signal corresponding to bandwidth A, the signal corresponding to bandwidth B and the equivalent signal corresponding to the signal bandwidth C are passed through an adder to obtain four equivalent combined signals. The equivalent combined signal of signals A0, B0 and C0 is D0, the equivalent combined signal of signals A1, B1 and C1 is D1, the equivalent combined signal of signals A2, B2 and C2 is D2, the equivalent combined signal of signals A3, B3 and The equivalent combined signal of C3 is D3. Four noise ratios can be determined based on the four equivalent combined signals, and the final noise ratio is determined by the largest noise ratio among the four noise ratios. The noise signals of signals A0, B0 and C0 are determined according to the final noise ratio. The noise signals of signal A0 (or B0, or C0) and signal A0 (or B0, or C0) are respectively passed through a subtractor to obtain the clipped signal A0. (or B0, or C0). The clipped signal A0 (or B0, or C0) can then be accelerated through the acceleration module.

Based on the above network architecture and communication equipment, please refer to Figure 7 , which is a schematic structural diagram of a combining and clipping device disclosed in an embodiment of the present application. As shown in Figure 7, the combined path clipping device may include:

The first determining unit 701 is used to determine M signals to be sent. The M signals to be sent correspond to M frequency bands one-to-one, and M is an integer greater than 1;

The second determination unit 702 is used to determine the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, to obtain to the first equivalent combined signal;

The third determination unit 703 is configured to determine the noise signal corresponding to each of the M signals to be sent according to the first equivalent combined signal, and obtain M noise signals;

The clipping unit 704 is configured to perform clipping processing on the M signals to be sent according to the M noise signals.

In one embodiment, the second determining unit 702 is specifically used to:

In one embodiment, the second determination unit 702 determines the equivalent combined signal of the M signals to be sent based on the zero frequency point interval, the first frequency offset, the second frequency offset, and the bandwidth of the second frequency band, and obtains the first The equivalent combined signal includes:

In one embodiment, the third determining unit 703 is specifically used to:

In one embodiment, the third determination unit 703 determines the first noise ratio according to the first equivalent combined signal including:

In one embodiment, the third determining unit 703 is also specifically used to:

In one embodiment, the clipping unit 704 is specifically configured to subtract the noise signals of corresponding frequency bands from the M noise signals using the M signals to be transmitted.

In one embodiment, the combined circuit clipping device may also include:

The sending unit 705 is configured to send the clipped M signals to be sent.

In one embodiment, the combined circuit clipping device may also include:

The acceleration unit 706 is used to accelerate the clipped M signals to be transmitted to obtain the transmission signal;

The sending unit 705 is specifically used to send the sending signal.

For a more detailed description of the first determination unit 701, the second determination unit 702, the third determination unit 703, the clipping unit 704, the sending unit 705 and the acceleration unit 706, please refer directly to the method embodiment shown in Figure 3. The relevant description of a communication device is obtained directly and will not be described in detail here.

Based on the above network architecture, please refer to FIG. 8 , which is a schematic structural diagram of another communication device disclosed in an embodiment of the present application. As shown in Figure 8, the communication device may include a processor 801, a memory 802, a transceiver 803 and a bus 804. The memory 802 may exist independently and may be connected to the processor 801 through a bus 804. Memory 802 may also be integrated with processor 801. Among them, bus 804 is used to realize the connection between these components. In one case, as shown in Figure 8, the transceiver 803 may include a transmitter 8031, a receiver 8032, and an antenna 8033. In another case, transceiver 803 may include a transmitter (i.e., an output interface) and a receiver (i.e., an input interface). A transmitter may include a transmitter and an antenna, and a receiver may include a receiver and an antenna.

When the computer program instructions stored in the memory 802 are executed, the processor 801 is used to execute the first determination unit 701, the second determination unit 702, the third determination unit 703, the clipping unit 704 and the acceleration unit 706 in the above embodiment. The transceiver 803 is used to perform the operations performed by the sending unit 705 in the above embodiment. The above communication device can also be used to perform various methods performed by the communication device in the above method embodiment in Figure 3, which will not be described again.

Based on the above network architecture, please refer to FIG. 9 , which is a schematic structural diagram of yet another communication device disclosed in an embodiment of the present application. As shown in FIG. 9 , the communication device may include an input interface 901 , a logic circuit 902 and an output interface 903 . The input interface 901 and the output interface 903 are connected through a logic circuit 902 . Among them, the input interface 901 is used to receive information from other communication devices, and the output interface 903 is used to output, schedule or send information to other communication devices. The logic circuit 902 is used to perform operations other than the operations of the input interface 901 and the output interface 903, such as implementing the functions implemented by the processor 801 in the above embodiment. Among them, a more detailed description of the input interface 901, the logic circuit 902 and the output interface 903 can be directly obtained by referring to the relevant description of the communication device in the above method embodiment, and will not be described again here.

It should be understood that each of the above modules can be independent or integrated together. For example, the transmitter, receiver and antenna can be separate or integrated into a transceiver. For another example, the input interface and the output interface can be independent or integrated into a communication interface.

An embodiment of the present application also discloses a computer-readable storage medium on which instructions are stored. When the instructions are executed, the method in the above method embodiment is executed.

An embodiment of the present application also discloses a computer program product including computer instructions. When the computer instructions are executed, the method in the above method embodiment is executed.

An embodiment of the present application also discloses a communication system, which may include a centralized controller, a route calculator, and a route executor. For specific description, reference may be made to the communication method shown above.

The above-mentioned specific embodiments further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above-mentioned are only specific embodiments of the present application and are not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solution of this application shall be included in the scope of protection of this application.

Obviously, the above-described embodiments are only some of the embodiments of the present application, but not all of the embodiments. In this article Reference to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the present embodiment application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "first", "second", "third", etc. in the description, claims, and drawings of this application are used to distinguish different objects and are not used to describe a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a series of steps or units are included, or optionally, steps or units that are not listed, or optionally other steps or units that are inherent to these processes, methods, products or devices.

The drawings show only part but not all of the content relevant to the present application. Before discussing example embodiments in more detail, it should be mentioned that some example embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe various operations (or steps) as a sequential process, many of the operations may be performed in parallel, concurrently, or simultaneously. Additionally, the order of operations can be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the figures.

The terms "unit" and the like used in this specification are used to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software or software in execution. For example, a unit may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, a thread of execution, a program and/or distributed between two or more computers. Additionally, these units can execute from various computer-readable media having various data structures stored thereon. A unit may, for example, respond to a signal having one or more data packets (eg, data from a second unit interacting with another unit, a local system, a distributed system, and/or a network. For example, the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

In addition, in the embodiments of this application, the number of nouns means "singular noun or plural noun", that is, "one or more", unless otherwise specified. "At least one" means one or more, "plurality" means two or more, and "a plurality" in "one or more" means two or more. "And/or" describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. For example, A/B means: A or B. “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.

Claims

A combined path clipping method, characterized by including:

Determine M signals to be sent, the M signals to be sent correspond to M frequency bands one-to-one, and M is an integer greater than 1;

Determine the equivalent combined signal of the M signals to be sent according to the information of the M frequency bands, and obtain a first equivalent combined signal;

Determine the noise signal corresponding to each of the M signals to be sent according to the first equivalent combined signal, and obtain M noise signals;

The M signals to be sent are clipped according to the M noise signals.
The method according to claim 1, characterized in that the information of the frequency band includes the zero frequency point, the center frequency point and the bandwidth of the frequency band, and the M to be sent are determined according to the information of the M frequency bands. The equivalent combined signal of the signals, the first equivalent combined signal includes:

According to the zero frequency point of the first frequency band and the zero frequency point of the second frequency band, the zero frequency point interval between the first frequency band and the second frequency band is determined, and the first frequency band is one of the M frequency bands. Reference frequency band, the second frequency band is any frequency band among the M frequency bands except the first frequency band;

According to the zero frequency point and the center frequency point of the first frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the first frequency band to obtain the first frequency offset;

According to the zero frequency point and the center frequency point of the second frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the second frequency band to obtain the second frequency offset;

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, the equivalent combined signal of the M signals to be sent is determined to obtain a first equivalent Combined signal.
The method according to claim 2, characterized in that the M number of frequencies are determined based on the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band. The equivalent combined signal of the signal to be sent, and the first equivalent combined signal includes:

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, the equivalent phase offset between the first signal and the second signal is determined, and the third A signal is a signal to be sent corresponding to the first frequency band among the M signals to be sent, and the second signal is a signal to be sent corresponding to the second frequency band among the M signals to be sent;

Determine an equivalent signal of the second signal based on the equivalent phase offset;

A first equivalent combined signal is determined based on an equivalent signal of the first signal and the second signal.
The method according to any one of claims 1 to 3, characterized in that the noise signal corresponding to each of the M signals to be sent is determined according to the first equivalent combined signal to obtain The M noise signals include:

Determine a first noise ratio based on the first equivalent combined signal;

The noise signal corresponding to each of the M signals to be sent is determined according to the first noise ratio, and M noise signals are obtained.
The method of claim 4, wherein determining the first noise ratio based on the first equivalent combined signal includes:

Determine the first equivalent noise signal according to the first equivalent combined signal and the noise improvement threshold;

A first noise ratio is determined based on the first equivalent combined signal and the first equivalent noise signal.
The method according to claim 4 or 5, characterized in that the noise signal corresponding to each of the M signals to be sent is determined according to the first equivalent combined signal to obtain M noise signals. Signals also include:

Generate N groups of signals based on the M signals to be sent, each group of signals in the N groups of signals includes M signals corresponding to the M frequency bands, and N is an integer greater than or equal to 1;

Determine the equivalent combined signals of the M signals included in each group of signals in the N groups of signals, and obtain N equivalent combined signals;

Determine the noise ratio according to each equivalent combined signal among the N equivalent combined signals, and obtain N noise ratios;

Determining the noise signal corresponding to each of the M signals to be sent according to the first noise ratio, and obtaining the M noise signals includes:

According to the first noise ratio and the maximum noise ratio among the N noise ratios, the noise signal corresponding to each of the M signals to be sent is determined, and M noise signals are obtained.
The method according to any one of claims 1 to 6, characterized in that, performing clipping processing on the M to-be-sent signals according to the M noise signals includes:

The noise signals corresponding to the frequency bands in the M noise signals are respectively subtracted from the M signals to be sent.
The method according to any one of claims 1-7, characterized in that the method further includes:

Send the clipped M signals to be sent.
A combined circuit clipping device, characterized in that it includes:

The first determination unit is used to determine M signals to be sent, where the M signals to be sent correspond to M frequency bands one-to-one, and M is an integer greater than 1;

A second determination unit, configured to determine the equivalent combined signal of the M signals to be sent based on the information of the M frequency bands, and obtain a first equivalent combined signal;

A third determination unit, configured to determine the noise signal corresponding to each of the M signals to be sent according to the first equivalent combined signal, and obtain M noise signals;

A clipping unit, configured to perform clipping processing on the M signals to be sent according to the M noise signals.
The device according to claim 9, characterized in that the second determining unit is specifically configured to:

According to the zero frequency point of the first frequency band and the zero frequency point of the second frequency band, the zero frequency point interval between the first frequency band and the second frequency band is determined, and the first frequency band is one of the M frequency bands. Reference frequency band, the second frequency band is any frequency band among the M frequency bands except the first frequency band;

According to the zero frequency point and the center frequency point of the first frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the first frequency band to obtain the first frequency offset;

According to the zero frequency point and the center frequency point of the second frequency band, determine the frequency offset between the zero frequency point and the center frequency point of the second frequency band to obtain the second frequency offset;

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, the equivalent combined signal of the M signals to be sent is determined to obtain a first equivalent Combined signal.
The device according to claim 10, characterized in that the second determining unit determines based on the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band. The equivalent combined signal of the M signals to be sent to obtain the first equivalent combined signal includes:

According to the zero frequency point interval, the first frequency offset, the second frequency offset and the bandwidth of the second frequency band, the equivalent phase offset between the first signal and the second signal is determined, and the third A signal is one of the M signals to be sent. The signal to be sent corresponding to the first frequency band, the second signal is the signal to be sent corresponding to the second frequency band among the M signals to be sent;

Determine an equivalent signal of the second signal based on the equivalent phase offset;

A first equivalent combined signal is determined based on an equivalent signal of the first signal and the second signal.
The device according to any one of claims 9-11, characterized in that the third determining unit is specifically used to:

Determine a first noise ratio based on the first equivalent combined signal;

The noise signal corresponding to each of the M signals to be sent is determined according to the first noise ratio, and M noise signals are obtained.
The device according to claim 12, wherein the third determination unit determines the first noise ratio according to the first equivalent combined signal including:

Determine the first equivalent noise signal according to the first equivalent combined signal and the noise improvement threshold;

A first noise ratio is determined based on the first equivalent combined signal and the first equivalent noise signal.
The device according to claim 12 or 13, characterized in that the third determining unit is further configured to:

Generate N groups of signals based on the M signals to be sent, each group of signals in the N groups of signals includes M signals corresponding to the M frequency bands, and N is an integer greater than or equal to 1;

Determine the equivalent combined signals of the M signals included in each group of signals in the N groups of signals, and obtain N equivalent combined signals;

Determine the noise ratio according to each equivalent combined signal among the N equivalent combined signals, and obtain N noise ratios;

The third determination unit determines the noise signal corresponding to each of the M signals to be sent according to the first noise ratio, and the obtained M noise signals include:

According to the first noise ratio and the maximum noise ratio among the N noise ratios, the noise signal corresponding to each of the M signals to be sent is determined, and M noise signals are obtained.
The device according to any one of claims 9-14, characterized in that the clipping unit is specifically configured to use the M signals to be sent to respectively subtract the noise signals of the corresponding frequency bands from the M noise signals. .
The device according to any one of claims 9-15, characterized in that the device further includes:

The sending unit is used to send M signals to be sent after clipping processing.
A communication device, characterized in that it includes a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the communication device Carry out the method as described in any one of claims 1-8.
A computer-readable storage medium, characterized in that a computer program or computer instructions are stored in the computer-readable storage medium. When the computer program or computer instructions are executed, any one of claims 1-8 is implemented. the method described.
A computer program product, characterized in that the computer program product includes computer program code, and when the computer program code is run, the method according to any one of claims 1-8 is implemented.