CN114866381A

CN114866381A - Signal processing method, signal processing device, communication equipment and storage medium

Info

Publication number: CN114866381A
Application number: CN202110153457.6A
Authority: CN
Inventors: 袁璞; 刘昊; 纪子超; 刘劲; 姜大洁
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2022-08-05
Anticipated expiration: 2041-02-03
Also published as: WO2022166880A1; CN114866381B

Abstract

The application discloses a signal processing method, a signal processing device, communication equipment and a storage medium, and belongs to the field of communication. The method comprises the following steps: the first communication device determining a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices; the first communication device processes a first signal transmitted based on the first transmission configuration information based on the whitening filter. The present application provides for pre-storing one or more whitening filters at a first communication device; and when the configuration is changed, deducing a whitening filter suitable for the current service configuration based on the pre-stored whitening filter. The complexity of receiver design is reduced, optimized performance is obtained under different scenes according to the capability of the receiver and the change of the channel state, and the complexity of a whitening filter required by the receiver side for calculating the FTN system receiver is reduced, so that the receiver is easier to realize in engineering.

Description

Signal processing method, signal processing device, communication equipment and storage medium

Technical Field

The present application belongs to the field of communication technologies, and in particular, to a signal processing method, an apparatus, a communication device, and a storage medium.

Background

In the receiving and transmitting process flow of the Faster Than Nyquist (FTN), the interval of each symbol in the transmitter is far smaller Than the minimum interval of the Nyquist transmission, so that the adjacent data are overlapped with each other, namely, intersymbol interference (ISI); thus the receiver must employ a whitening filter and Maximum Likelihood Sequence Estimation (MLSE) algorithm to remove this ISI.

In the prior art, the matrix inversion and square root Cholesky decomposition method involved in the algorithm for calculating the whitening filter by the receiver has high operation complexity, so that the complexity of the receiver design is high.

Disclosure of Invention

Embodiments of the present application provide a signal processing method, an apparatus, a communication device, and a storage medium, which can avoid a receiver performing complex calculation for obtaining a whitening filter, reduce the complexity of the receiver, and facilitate engineering implementation.

In a first aspect, a signal processing method is provided, which includes:

the first communication device determining a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices;

the first communication device processes a first signal transmitted based on the first transmission configuration information based on the whitening filter.

In a second aspect, there is provided a signal processing apparatus, the apparatus comprising:

a first determining module for determining a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices;

a first processing module to process a first signal transmitted based on the first transmission configuration information based on the whitening filter.

In a third aspect, there is provided a communication device, the terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first aspect.

In a fourth aspect, a readable storage medium is provided, on which a program or instructions are stored, which when executed by a processor, implement the steps of the method according to the first aspect.

In a fifth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a device program or instructions to implement the method according to the first aspect.

In an embodiment of the present application, the method comprises the steps of pre-storing one or more whitening filters in a first communication device; when the configuration is changed, an available whitening filter suitable for the current service configuration is deduced based on the pre-stored whitening filter. The complexity of receiver design is reduced, optimized performance can be obtained under different scenes according to the capability of the receiver and the change of the channel state, and the complexity of a whitening filter required by the receiver side for calculating the FTN system receiver is reduced, so that the receiver is easier to realize in engineering.

Drawings

FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a diagram illustrating a comparison of signals without time domain overlapping and with time domain overlapping provided by an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a processing flow of a transceiving end of an FTN communication system according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a receiver processing flow provided herein;

fig. 5 is a schematic flowchart of a signal processing method according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating properties of an L matrix corresponding to a whitening filter according to an embodiment of the present application;

fig. 7 is a second schematic flowchart of a signal processing method according to an embodiment of the present application;

fig. 8 is a third schematic flowchart of a signal processing method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

fig. 11 is a schematic hardware structure diagram of a terminal according to an embodiment of the present disclosure;

fig. 12 is a schematic hardware structure diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.

To better describe the present application, the following is first introduced:

Faster-than-Nyquist transmission, that is, fast-than-Nyquist Signaling, is a new signal processing technique that is currently considered to break through the Nyquist sampling rate and further approach the physical limit of the channel capacity. Its derivative technology is X domain overlapping Multiplexing (OVXDM). The OVXDM/FTN technique artificially introduces ISI and/or Channel Interference (ICI) in a time domain/frequency domain based on a waveform coding theory, thereby improving a symbol transmission rate and increasing an equivalent Channel capacity. However, the waveform-coded signal puts higher requirements on the performance of the receiver, and increases the complexity of the decoding algorithm and the power consumption of hardware. Generally, the larger the time-frequency domain overlap coefficient in waveform coding, i.e. the more severe the artificially introduced ISI and ICI, the more states the receiver side needs to judge, and the higher the complexity of the receiving algorithm.

In a complex electromagnetic wave transmission environment in a city, due to the existence of a large number of scattering, reflecting and refracting surfaces, the time when a wireless signal reaches a receiving antenna through different paths is different, namely the multipath effect of transmission and the signals of different paths. ISI occurs when a preceding symbol and a following symbol of a transmitted signal arrive simultaneously over different paths, or when the following symbol arrives within the delay spread of the preceding symbol. Similarly, in the frequency domain, due to frequency offset effect, doppler effect, etc., each sub-carrier where a signal is located may generate offsets of different degrees in frequency, so that the sub-carriers that may be orthogonal originally may generate overlapping, that is, ICI. The ISI/ICI generated during signal transmission is superimposed with the ISI/ICI introduced by waveform coding during transmission, which puts higher requirements on the decoding capability of the receiver.

In a communication system, fading channels can be combated by more sophisticated receiver algorithms. Such as iterative algorithms using channel pre-equalization, joint channel decoding, etc. In practical application, however, on one hand, an ideal receiver cannot be adopted in a practical system due to the limitations of cost, power consumption and the like, the complexity of a decoding algorithm is limited, and when ISI/ICI exceeds a certain threshold, correct decoding cannot be performed. Meanwhile, when the decoding complexity of the receiver is increased, the energy consumption is also increased, which is not beneficial to saving energy and reducing consumption of the terminal. Meanwhile, the throughput advantage of the FTN/OVTDM system over the conventional OFDM system is mainly in a high Signal to Noise Ratio (SNR) region. In a high SNR area, the influence degree of noise on a received signal is relatively small, a receiver is easy to correctly decode according to the known constraint relation of the code between symbols of the FTN/OVTDM, and the error rate is very low. In a low SNR region, the degree of influence of noise on a received signal is relatively large, and a constraint relation of inter-symbol coding is destroyed, so that an error rate is higher, which is inferior to that of a conventional OFDM system.

First, FTN/OVTDM related background technology;

FTN/OVTDM is a signal processing method for artificially introducing an appropriate amount of ISI and/or ICI by performing shift superposition processing (also called waveform coding) on a transmission signal, and aims to increase a symbol transmission rate, i.e., increase the number of symbols transmitted per second per hertz (Hz). Wherein, the FTN is all called fast-than-Nyquist, namely exceeding the Nyquist. OVXDM includes OVTDM, OVFDM and OVCDM, and a combination technique of OVTDM and OVFDM, which is collectively called Overlapped X-Domain Multiplexing, i.e. X-Domain overlap Multiplexing. Hereinafter, collectively referred to as FTN. Meanwhile, the introduced ISI and ICI may increase the complexity of decoding, possibly resulting in an increase of the bit error rate. However, the adverse effect caused by the increase of the error rate can be suppressed by the advanced decoding algorithm, and the channel capacity can still be increased by the method for increasing the symbol sending rate. The expression is as follows:

wherein, T _Δ τ ∈ (0,1), τ is a time-domain overlap coefficient. In particular, in OVXDM, take

Thus is provided with

ζ is the frequency domain overlap factor. In particular, in OVXDM, take

Thus is provided with

Fig. 2 is a schematic diagram comparing signals without time domain overlapping and with time domain overlapping provided by the embodiment of the present application, and the generation of ISI is described below by taking fig. 2 as an example. When T is 0.8, i.e. the time domain waveform overlap coefficient τ is 0.8, the amplitude of the pulse waveform carrying information of other sampling points of the processed signal at the time of each sampling point is not zero, so that ISI is generated, and the impulse response function of the multipath channel is assumed to be h _CH (t), the signal after passing through the channel can be equivalently expressed as:

wherein

The signal received by the receiver is expressed as:

y(t)＝s′(t)+w(t)； (3)

where w (t) is white Gaussian noise.

There are two main ways to generate FTN/OVTDM signals: 1) in a single-antenna system, the signal can be equivalently generated by over-sampling and shaping filtering, and the effect is similar to a convolution encoder acting on a modulation level; 2) in the multi-antenna system, the multi-antenna system can be generated in a mode closer to the physical meaning, namely, each antenna element/port of the multi-antenna is controlled to be sequentially T according to a preset displacement superposition principle _Δ The signals transmitted by different antenna elements/ports with different delays are superposed on an air interface, ISI is introduced between sampling points of the signals, and an FTN/OVTDM is formedA signal.

Due to the superposition effect of waveform coding and multipath channels, the number of equivalent multipaths is increased, and the symbol intervals and subcarrier intervals are closer, so that the equivalent time-frequency domain overlapping degree is increased. This increase in the degree of time-frequency domain overlap is reflected in the receiver as more severe ISI and ICI, which presents a challenge to the receiver design. The complexity of the ML type receiver with the best theoretical performance rises with the rise of the waveform overlapping degree, and when { K, N } is large, the hardware cannot be realized. Fast algorithms with fixed decoding complexity do not work for signals with higher overlap.

In the present invention, the overlap factor is

Equivalent to OVTDM signals with K number of overlapping layers. In the following text, for the sake of brevity, the super-nyquist signal family represented by FTN/OVTDM may be collectively referred to by FTN. Meanwhile, the number of the overlapped layers can be used as a description mode for representing the characteristics of the FTN/OVTDM signals.

Receiving side algorithm of two, FTN signal

Fig. 3 is a schematic diagram of a processing flow of a transceiving end of an FTN communication system according to an embodiment of the present application, where in an actual system, the transceiving processing flow of an FTN is shown in fig. 3. Where the red-marked part is a different place than in the nyquist transmission based communication system. There are two main differences: 1) the spacing of the individual symbols in the transmitter is much less than the minimum spacing of nyquist transmissions, which results in overlapping of adjacent data with each other, i.e., ISI; thus resulting in 2), the receiver must employ a whitening filter and Maximum Likelihood Sequence Estimation (MLSE) algorithm to remove this ISI.

Fig. 4 is a schematic diagram of a receiver processing flow provided by the present application, and the modules associated with the present invention are primarily whitening filter modules. The whitening filter module and its pre-and post-processing modules are shown in fig. 4. The received time domain samples y (t) are matched filtered and down-sampled before being input to the whitening filter module. At this time, the additive white noise originally caused by the wireless transmission channel in y (t) becomes colored noise after matching filtering, which is not beneficial to the following MLSE detection. Therefore, the colored noise needs to be reduced to white noise by the whitening filtering module. The whitening filter, abstracted as a mathematical model, is actually a strip matrix, each row of which has non-zero elements that are tap coefficients corresponding to the next module MLSE module. For a given system, the L matrix for the whitening filter may be calculated as follows.

First, the filter is shaped according to the coefficient g (t) [ g ] ₀ g ₁ … g _n ]An H-matrix is constructed.

L in the H matrix is the length of the processed data sample point, and N is the length of the sample point of the shaping filter. Calculate covariance matrix R of H HH ^H The obtained covariance matrix R is subjected to Cholesky decomposition. According to Cholesky's theorem, R ═ L ^H And L. Inverting the obtained conjugate transpose of L satisfying the condition to obtain L ^-H I.e. the required whitening filter.

It can be verified that whitening filtering can restore the gaussian distribution characteristic of the noise. The foregoing equation (3) can be written in vector form as follows:

Y＝S+N； (4)

obtaining after matched filtering operation at the receiver side:

wherein

After matched filtering, the color noise is changed, and the whitening treatment needs to be carried out by utilizing the L:

can verify

White gaussian noise:

in the process of solving the whitening filter, matrix inversion and Cholesky decomposition are involved, and when the matrix dimension is large, namely L and N are large, the matrix inversion and Cholesky decomposition are difficult to realize in actual hardware. Therefore, it is desirable to find a way to avoid the receiver from frequently solving the whitening filter operations.

The signal processing method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings by some embodiments and application scenarios thereof.

Fig. 5 is a schematic flowchart of a signal processing method according to an embodiment of the present application, and as shown in fig. 5, the method includes the following steps:

step 500, the first communication device determines a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrixes;

the first communication device processes a first signal transmitted based on the first transmission configuration information based on the whitening filter, step 510. Optionally, the first transmission configuration information includes a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal.

Optionally, the first communication device is a receiving side of the first signal, and the second communication device is a transmitting side of the first signal.

Optionally, the mathematical expression of the whitening filter is a matrix, which may be referred to as a first target matrix, and may also be referred to as an L matrix.

Optionally, the complexity of the receiver algorithm may be reduced as much as possible by some means, for example, using the prior information of the wireless channel, using the channel measurement result, and so on, so that the receiver can track the time-varying characteristic of the fading channel and always keep in the optimal operating state.

FIG. 6 is a schematic diagram illustrating properties of an L matrix corresponding to a whitening filter according to an embodiment of the present application; as shown in fig. 6, the property of the L matrix corresponding to the whitening filter can reduce the complexity of the receiver from the viewpoint of system design. Fig. 6 corresponds to an L matrix when K is 2, L is 4, and L is 6,8, respectively, from top to bottom. From observing the nature of the matrix in fig. 6, it can be seen that L is a square matrix with dimension KL × KL when the number of overlapping layers K is fixed. The number of non-zero elements of the L matrix column vector is aK + 1. Wherein the value of a depends on the number Fs of main lobe sampling points of the filter after K is determined. For example, it is known that K is 2, a is 6 when Fs is 16, a is 4 when Fs is 24, a is 3 when Fs is 32, and a is 2 when Fs is 48.

As can be seen from FIG. 6, when K is determined, L matrix L corresponding to a smaller number n of time-domain sampling points _n Is an L matrix L corresponding to a larger number n' of time-domain sampling points _n′ And has: l is _n ＝L _n′ (1: n ) represents L _n Is L _n′ And (3) starting from the first element at the upper left corner, and respectively taking n elements according to rows and columns to obtain a sub-matrix. Therefore, the first communication device may only need to know the value of the first overlapping layer number K corresponding to the first signal, and the maximum possible processing time domain sampling point number in one frame, that is, the first time domain sampling point number L _max The L matrix corresponding to any possible time domain sampling point number can be obtained, namely the whitening filter.

As can be seen from the foregoing formula (3), the noise w (t) is independent of the channel impulse response; the whitening filter is calculated without considering the impulse response of the channel. Therefore, the computation of the whitening filter depends only on the coefficients of the shaping filter, and on the frame structure of the data; in the communication system, data sampling points are processed by taking one time slot as a unit, namely the number of time domain sampling points transmitted in one time slot is the number L of matrix columns of H, and the time domain sampling points do not need to change along with the change of a time-varying channel.

Optionally, one slot represents a minimum time resource unit for demodulating and decoding data by a physical layer of the communication system, and may be collectively referred to as a slot in various embodiments of the present application, such as a slot in NR, and a subframe in LTE.

Alternatively, the filters (frequency domain rectangular windows, time domain Sinc functions) used for ideal pulse shaping are difficult to implement in engineering. Therefore, in engineering applications, a root raised cosine filter may be used as a shaping filter. There is one key parameter, namely the roll-off factor α. When the alpha is smaller, the frequency domain response function of the pulse is more approximate to the ideal pulse, but the design and the implementation of hardware devices are more difficult. Meanwhile, when α is small, inter-symbol interference caused by linear distortion occurring in signal transmission is also more serious, and performance of a receiver is also affected. Therefore, in practical systems, the value of α is usually between 0.15 and 0.5.

Optionally, all indication and feedback messages and related control signaling related to the embodiments of the present application are sent by nyquist sampling signals, and are not sent by FTN signals. To ensure the reliability of the control message, the FTN signal is only used for transmitting data, not for transmitting pilot and control signaling.

Optionally, the first communication device may pre-store one or more whitening-filter matrices, and upon acquiring the whitening filter for processing the first signal, the first communication device may determine the whitening filter based on the pre-stored one or more whitening-filter matrices.

Optionally, taking the first communication device as the UE as an example, to simplify the complexity of the receiver, the UE may pre-store the whitening filter table in hardware, and the receiver may directly call the whitening filter table during processing, so as to simplify the hardware design and reduce the UE computation overhead.

Optionally, the first communication device may determine a whitening filter based on a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal, and one or more pre-stored whitening filter matrices, and process, by the whitening filter, the first signal transmitted based on the first transmission configuration information.

Optionally, an embodiment of the present application provides a scheme that a whitening filter is preset by a first communication device, that is, a receiver side of a first signal, using a priori information, so as to reduce a real-time computation complexity of the receiver side. The receiving side can pre-store one or more whitening filters by the pre-configuration information of the known protocol and the configuration information of the transmitting side; and when the configuration is changed, the available whitening filter suitable for the current service configuration is deduced by the pre-stored whitening filter. The complexity of the receiver design is reduced, and more optimized performance can be obtained under different scenes according to the receiver capability and the channel state change.

Optionally, the method further comprises:

determining the pre-stored one or more whitening filter matrices based on a protocol pre-definition; or

Determining one or more pre-stored whitening filter matrixes based on second transmission configuration information and a shaping filter corresponding to the second transmission configuration information;

wherein the second transmission configuration information is protocol-predefined or determined based on indication information of the second communication device, and the shaping filter is protocol-predefined or determined based on indication information of the second communication device.

Alternatively, since one or more whitening filter matrices are to be stored in advance, one or more whitening filter matrices suitable for storage may be determined in advance.

Alternatively, one or more whitening-filter matrices suitable for storage may be matched to the ROM storage space of the first communication device, or the whitening filter may be obtained more simply, e.g., less computationally.

Optionally, the pre-stored one or more whitening filter matrices may be protocol pre-defined.

Optionally, the protocol may predefine different one or more whitening filter matrices corresponding to different second transmission configuration information; the first communication device may store one or more whitening filter matrices based on the possible first transmission configuration information.

Optionally, second transmission configuration information may be determined based on a protocol specification or based on indication information of the second communication device, where the second transmission configuration information may include one or more sets of possible configurations, and then one or more pre-stored whitening filter matrices may be determined based on the second transmission configuration information and a shaping filter corresponding to the second transmission configuration information, and then the one or more whitening filter matrices may be stored.

Alternatively, different transmission configurations may correspond to different whitening filters, to different shaping filters, and different combinations of { number of overlapping layers, number of time-domain sampling points } may correspond to the same or different shaping filters.

Alternatively, the shaping filter may be protocol predefined, or determined based on the shaping filter configuration of the first communication device, or determined based on the shaping filter configuration of the second communication device, or determined based on both the shaping filter configuration of the first communication device (first configuration information) and the shaping filter configuration of the second communication device (second configuration information).

Alternatively, the determination of the shaping filter based on the shaping filter configuration may be one of arbitrarily selected configurations, or one selected to match the current configuration information, or an optimal one, which is not limited in this embodiment.

Alternatively, for two communication devices, the device capability is strong and the supported configuration of the shaping filter (or key technical indicator) is high. The device is less capable and supports fewer configurations of the shaping filter.

Optionally, for the two communication devices, the strength of the device capability is known or very easily obtained for both parties, for example, the base station has a stronger capability than the terminal, and the terminal has a weaker capability, and since the communication device itself has a known device identity for itself and a device identity of the opposite communication terminal, both the second communication device and the second communication device can easily learn the strength of the capability between them.

For example, if the first communication device is a base station and the second communication device is a terminal, both of them can directly determine that the first capability is stronger than the second capability.

For example, if the second communication device is a base station and the first communication device is a terminal, both devices can directly determine that the first capability is weaker than the second capability.

For example, if the first communication device is a base station and the second communication device is a base station, both the first and second communication devices can directly determine that the first and second capabilities are the same.

For example, if the first communication device is the terminal and the second communication device is the maximum, both the first and second communication devices can directly determine that the first and second capabilities are the same.

Alternatively, in a case where the capabilities of the first communication device and the second communication device are different, in order that the first signal can be transmitted normally, the shaping filter may be determined according to the configuration of the side with the weaker capability.

Alternatively, in the case where the capabilities of the first communication device and the second communication device are the same, the shaping filter may be determined according to the configuration on either side, or the shaping filters may be determined together according to the configurations on both sides.

Optionally, in a case where the first capability of the first communication device is weaker than the second capability of the second communication device, the shaping filter may be determined based on the first configuration information of the first communication device.

Optionally, in a case that the first capability of the first communication device and the second capability of the second communication device are the same, the shaping filter may be determined based on first configuration information of the first communication device, or the shaping filter may be determined based on second configuration information of the second communication device.

Alternatively, if the shaping filter is determined based on the first configuration information of the first communication device, the first communication device may send indication information to the second communication device after determining the used shaping filter, indicate the second communication device to use the shaping filter, and after receiving the indication information, the second communication device may determine the shaping filter used for the first signal transmission. And vice versa.

Alternatively, if the shaping filter is determined based on the first configuration information of the second communication device, after determining the used shaping filter, the second communication device may send indication information to the first communication device to indicate the shaping filter to the first communication device, and after receiving the indication information, the first communication device may determine the shaping filter used for the first signal transmission. And vice versa.

Alternatively, if the shaping filter is determined based on the first configuration information of the first communication device, the first communication device may indicate the shaping filter corresponding to the first configuration information to the second communication device, the second communication device may send indication information to the first communication device after determining the used shaping filter, indicate the first communication device to the shaping filter, and after receiving the indication information, the first communication device may determine the shaping filter used for the first signal transmission. And vice versa.

Alternatively, if the shaping filter is determined based on the second configuration information of the second communication device, the second communication device may indicate the shaping filter corresponding to the second configuration information to the first communication device, the first communication device may send indication information to the second communication device after determining the used shaping filter, indicate the second communication device to the shaping filter, and after receiving the indication information, the second communication device may determine the shaping filter used for the first signal transmission. And vice versa.

Alternatively, in the case where the first capability is stronger than the second capability, the shaping filter may be determined based on the second configuration information, and thus may be indicated to the first communication device after the second communication device determines that the shaping filter is determined based on the second configuration information. And vice versa.

Alternatively, in the case where the first capability and the second capability are the same, the shaping filter may be determined based on the second configuration information, and thus, the shaping filter may be indicated to the first communication device after the second communication device determines that the shaping filter is determined based on the second configuration information. And vice versa.

Optionally, when the first communication device indicates the determined shaping filter to the second communication device, the first communication device may directly indicate the coefficients or generation parameters of the shaping filter; a table including the coefficients or generation parameters of at least one shaping filter and the index corresponding to the coefficient or generation parameter of each shaping filter may also be indicated; and then indicates the index corresponding to the determined coefficient or generation parameter of the shaping filter. Optionally, when the second communication device indicates the determined shaping filter to the first communication device, the coefficients or generation parameters of the shaping filter may be directly indicated; a table including the coefficients or generation parameters of at least one shaping filter and the index corresponding to the coefficient or generation parameter of each shaping filter may also be indicated; and then indicates the index corresponding to the determined coefficient or generation parameter of the shaping filter.

Optionally, the first transmission configuration information includes a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal;

optionally, the second transmission configuration information includes one or more overlapping layer numbers, and one or more time-domain sampling point numbers;

wherein the determining the one or more pre-stored whitening filter matrices based on the second transmission configuration information and the shaping filter corresponding to the second transmission configuration information includes:

for one or more overlapping layers, based on one or more time domain sampling points corresponding to each overlapping layer and the shaping filter, determining a first whitening filter matrix of a maximum dimension corresponding to each overlapping layer, or a second whitening filter matrix of a maximum dimension corresponding to the overlapping layers under the constraint of the ROM capacity of the first communication device.

Optionally, the determining one or more pre-stored whitening filter matrices based on the second transmission configuration information and the shaping filter corresponding to the second transmission configuration information includes:

Alternatively, the second communications device may indicate or may specify in the protocol that all of the optional overlap coefficients are K ═ K _j J-0, 1,2, …, and one L for each value of K _i (ii) a A corresponding maximum dimension first whitening-filter matrix may be generated

Alternatively, the second communications device may indicate or may specify in the protocol that all of the optional overlap coefficients are K ═ K _j J-0, 1,2, …, and one L for each value of K _i (ii) a A second whitening filter matrix may be generated that satisfies the maximum dimension for each K value subject to the ROM capacity constraint of the first communication device

Alternatively, the second communications device may indicate or may specify in the protocol that all of the optional overlap coefficients are K ═ K _j J is 0,1,2, …, and a set of selectable numbers of data samples L for each value K is L _i And i is 0,1,2, … }. For each K _j A corresponding maximum dimension whitening filter matrix may be generated

Alternatively, the second communications device may indicate or may specify in the protocol that all of the optional overlap coefficients are K ═ K _j J is 0,1,2, … }, and a set of optional K values for each K valueThe number of data samples L ═ L _i And i is 0,1,2, … }. For each K _j A second whitening filter matrix may be generated that satisfies the maximum dimension for each K value subject to the ROM capacity constraint of the first communication device

Alternatively, the second communications device may indicate or the protocol may specify that an overlap factor K-K _j And a set of selectable data sample points corresponding to the value K, L ═ L _i I ═ 0,1,2, … }; a corresponding maximum dimension whitening filter matrix may be generated

Alternatively, the second communications device may indicate or the protocol may specify that an overlap factor K-K _j And a set of selectable data sample points corresponding to the value K, L ═ L _i I ═ 0,1,2, … }; a second whitening filter matrix may be generated that satisfies the maximum dimension for each K value subject to the ROM capacity constraint of the first communication device

Alternatively, the second communications device may indicate or the protocol may specify that an overlap factor K-K _j And a value L corresponding to the value K _i (ii) a A corresponding whitening filter matrix may be generated

Alternatively, the second communications device may indicate or the protocol may specify that an overlap factor K-K _j And a value L corresponding to the value K _i (ii) a A second whitening-filter matrix may be generated that satisfies the maximum dimension for the number of overlapping layers subject to the ROM capacity constraint of the first communication device

Optionally, the determining, by the first communication device, a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices includes:

determining a dimension of the whitening filter based on first transmission configuration information;

determining the whitening filter based on the dimensions of the whitening filter and the pre-stored one or more whitening filter matrices.

Optionally, when determining the whitening filter based on the first transmission configuration information, the dimension of the L matrix corresponding to the whitening filter to be used, that is, the dimension of the whitening filter, may be determined first;

optionally, the dimensionality of the whitening filter may be determined based on first transmission configuration information;

optionally, the dimension of the whitening filter is equal to the first number of overlapping layers × the number of first time domain samples.

Optionally, after determining the dimension W of the whitening filter, a whitening filter with dimension W may be determined from one or more pre-stored whitening filter matrices.

Optionally, the determining the whitening filter based on the dimension of the whitening filter and the pre-stored one or more whitening filter matrices includes:

determining a second target matrix corresponding to the first overlapping layer number in the one or more pre-stored whitening filter matrixes based on the first overlapping layer number;

determining the whitening filter based on the dimension of the whitening filter and the second target matrix.

Optionally, when a whitening filter with a dimension W is determined from the pre-stored one or more whitening filter matrices, a second target matrix corresponding to the first number of overlapping layers may be first determined from the pre-stored one or more whitening filter matrices;

for example, all optional overlap factors are K＝{K _j J is 0,1,2, …, and a set of alternative data samples L is L for each value K _i And i is 0,1,2, … }. For each K _j All storing a corresponding maximum dimension whitening filter matrix

If the first overlapping layer number is determined to be K ₂ Then, a second target matrix corresponding to the first number of overlapping layers can be obtained

Optionally, after determining the second target matrix, a matrix with dimension W may be determined to be the whitening filter based on the dimension W of the whitening filter and based on the second target matrix.

Optionally, in a case that the whitening filter matrix is a first whitening filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix includes:

and determining a sub-matrix of the second target matrix as the whitening filter by taking the first element of the second target matrix as the first element of the whitening filter based on the dimension of the whitening filter.

Optionally, if the whitening filter matrix is the first whitening filter matrix, it is a number of overlapping layers K _j The number of the overlapping layers K _j Number L of all corresponding data samples _i All of (1) _j ，L _i Combining the whitening filter matrix with the largest dimension in all the corresponding whitening filters, so that after the dimension of the whitening filter is determined to be W, a sub-matrix with the dimension of W of the first whitening filter matrix can be determined to be the whitening filter;

specifically, when the whitening filter is determined, a first element of the second target matrix may be used as a first element of the whitening filter, and a sub-matrix of the second target matrix is uniquely determined to be used as the whitening filter.

Optionally, assume that it is currentThe overlap coefficient corresponding to the processing time slot is K _j The number of time domain sampling points is n, and { L _j N corresponding whitening filters, i.e. L matrices, are denoted

Then according to

Obtaining

The rule of (1) is:

representation matrix

Is a matrix

And (3) starting from the first element at the upper left corner, and respectively taking n elements according to rows and columns to obtain a sub-matrix.

Optionally, in a case that the whitening filter matrix is a second whitening filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix includes:

and under the condition that the dimension of the second target matrix is larger than that of the whitening filter, determining a sub-matrix of the second target matrix as the whitening filter by taking the first element of the second target matrix as the first element of the whitening filter based on the dimension of the whitening filter.

Optionally, if the whitening filter matrix is a second whitening filter matrix, it is a number of overlapping layers K _j The number of the overlapping layers K _j Number L of all corresponding data samples _i All of (1) _j ，L _i Combining all whitening filters corresponding to the combination, and satisfying the whitening of the maximum dimension under the constraint condition of Read-Only Memory (ROM) capacity of the first communication equipmentA filter matrix.

Therefore, if the dimension of the second target matrix is larger than the dimension of the whitening filter, a sub-matrix of the second target matrix can be uniquely determined as the whitening filter by using the first element of the second target matrix as the first element of the whitening filter.

in the event that the dimension of the second target matrix is less than the dimension of the whitening filter, sending a first request to a second communication device, the first request requesting a whitening filter;

and acquiring the whitening filter sent by the second communication equipment.

Optionally, if the whitening filter matrix is a second whitening filter matrix, it is a number of overlapping layers K _j The number of the overlapping layers K _j Number L of all corresponding data samples _i All of (1) _j ，L _i Combining the whitening-filter matrix of the largest dimension among all whitening filters corresponding to the first communication device that meets the ROM capacity constraint.

Therefore, there are cases where the dimension of the second objective matrix is smaller than the dimension of the whitening filter.

Optionally, if the dimension of the second target matrix is smaller than the dimension of the whitening filter, and the sub-matrix of the second target matrix cannot be used as the whitening filter, a first request may be sent to the second communication device to request the whitening filter; a whitening filter returned by the second communication device may then be received.

Optionally, the dimension W of the whitening filter may be carried in the first request;

optionally, the first request may further carry the first number of overlapping layers and the number of first time-domain sampling points.

Optionally, when the first communication device is a network side, the whitening filter sent by the second communication device is carried by Uplink Control Information (UCI), or carried by a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

Optionally, when the first communication device is a network side, the second communication device may be carried by uplink control information UCI when sending the whitening filter, or may be carried by a PUCCH or a PUSCH.

Optionally, when the first communication device is a network side, the second communication device may be carried by uplink control information UCI when sending the whitening filter, and the UCI may be carried by a PUCCH or a PUSCH.

Optionally, when the first communication device is a terminal, the whitening filter sent by the second communication device is carried by Downlink Control Information (DCI) or dedicated-RRC, or is carried by a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH).

Optionally, when the first communication device is a network side, the second communication device may be carried by DCI or dedicated-RRC when sending the whitening filter, or may be carried by a PDCCH or a PDSCH.

Optionally, when the first communication device is a network side, the second communication device may be carried by DCI when sending the whitening filter, and the DCI may be carried by a PDCCH;

optionally, in a case that the first communication device is a network side, the second communication device may be carried by a dedicated-RRC when sending the whitening filter, and the dedicated-RRC may be carried by the PDSCH.

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the whitening filter sent by the second communication device is carried by a Sidelink Control signaling SCI or another message of the Sidelink, or carried by a Physical Sidelink Control Channel (PSCCH), a Physical bypass shared Channel (PSCCH), or a Physical bypass broadcast Channel (PSBCH).

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the second communication device may be carried by sidelink control Signaling (SCI) or other messages of the sidelink when sending the whitening filter, or may be carried by PSCCH, pscsch, or PSBCH.

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the second communication device may be carried by an SCI when sending the whitening filter, where the SCI may be carried by a PSCCH or a PSCCH.

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the second communication device may be carried by other messages of the sidelink when sending the whitening filter, where the other messages of the sidelink, for example, the S-MIB, may be carried by the PSSCH or the PSBCH.

determining the whitening filter by a Cholesky decomposition algorithm based on the dimension of the whitening filter if the dimension of the second target matrix is less than the dimension of the whitening filter; or determining the whitening filter based on the second target matrix.

Optionally, in a case that the dimension of the second target matrix is smaller than the dimension of the whitening filter, directly determining the whitening filter by an existing calculation method based on the dimension of the whitening filter;

optionally, in a case that the dimension of the second target matrix is smaller than the dimension of the whitening filter, directly determining the whitening filter through Cholesky decomposition algorithm based on the dimension of the whitening filter;

alternatively, the Cholesky decomposition is a decomposition that represents a symmetric positive definite matrix as the product of a lower triangular matrix L and its transpose. It requires that all eigenvalues of the matrix must be greater than zero, so the diagonal elements of the lower triangle of the decomposition are also greater than zero. Cholesky decomposition, also known as square root decomposition, is a variant of LU trigonometric decomposition when a is a true symmetric positive definite matrix.

Optionally, in a case where the dimension of the second target matrix is smaller than the dimension of the whitening filter, the whitening filter is determined based on the dimension of the whitening filter and the second target matrix.

Optionally, the method further comprises:

determining a shaping filter corresponding to first transmission configuration information and first transmission configuration information based on second transmission configuration information and a shaping filter corresponding to the second transmission configuration information;

sending second indication information to second communication equipment, wherein the second indication information is used for indicating the first transmission configuration information and the forming filter corresponding to the first transmission configuration information;

and the first transmission configuration information and the shaping filter corresponding to the first transmission configuration information are used for the second communication equipment to generate the first signal.

Optionally, before calculating the whitening filter, the dimension W of the whitening filter and the shaping filter used may be determined first, so that the first transmission configuration information used for calculating the dimension W and the shaping filter corresponding to the first transmission configuration information may be determined first;

optionally, second indication information may be sent to the second communication device, indicating that the determined first transmission configuration information and the shaping filter corresponding to the first transmission configuration information, such as indicating { g (t), L ″ _i ,K _i }; the second communication device may be according to { g (t), L _i ,L _i Determined { g (t), L } _i ,K _i And generating an FTN signal, namely a first signal for transmission.

Fig. 7 is a second schematic flowchart of a signal processing method according to an embodiment of the present application, as shown in fig. 7, including the following steps:

step 700, the second communication device indicates the second transmission configuration information to the first communication device;

optionally, the second communication device may indicate second transmission configuration information to the first communication device, wherein the second transmission configuration information may include one or more sets of possible configurations.

For example, all optional overlap factors K ═ K may be included _j J-0, 1,2, …, and one L for each value of K _i And a shaping filter is determined to be used, a first whitening-filter matrix of corresponding maximum dimension can be generated

The first communication device may then determine one or more whitening filter matrices to pre-store based on the second transmission configuration information and the shaping filter determined to be used, and then store the one or more whitening filter matrices.

Alternatively, the indication may be performed by a table, where the table includes one or more groups of possible configurations, i.e. indexes corresponding to each configuration.

Step 710, the first communication device feeds back the first transmission configuration information to the second communication device;

optionally, the first communication device may transmit the first transmission configuration information { g (t), L, currently determined to be used _i ,K _j Feeding back data carried by UCI or PUSCH carried by PUCCH to second communication equipment, wherein g (t) is a forming filter determined to be used, and L _i To determine the number of first time domain sampling points used, K _j To determine the first number of overlapping layers to use.

Optionally, the first communication device may feed back the first transmission configuration information to the second communication device through an index corresponding to the first transmission configuration information in the table.

Step 720, the second communication device generates a first signal based on the first transmission configuration information;

optionally, the second communication device may be based on the first transmission configuration information g (t), L _i ,K _i GenerationThe FTN signal transmits data, i.e., a first signal.

In step 730, the first communications device determines a whitening filter based on the first transmission configuration information.

Optionally, the first communication device may determine a whitening filter according to the first transmission configuration information and one or more pre-stored whitening filter matrices, and process the first signal.

Fig. 8 is a third schematic flowchart of a signal processing method according to an embodiment of the present application, as shown in fig. 8, including the following steps:

step 800, the second communication device indicates the second transmission configuration information to the first communication device;

For example, all optional overlap factors K ═ K may be included _j J-0, 1,2, …, and one L for each value of K _i And a shaping filter determined to be used, a first whitening-filter matrix satisfying a maximum dimension for each K value under the constraint of ROM capacity of the first communication device can be generated

Step 810, the first communication device feeds back the first transmission configuration information to the second communication device;

optionally, the first communication device may transmit the first transmission configuration information { g (t), L, currently determined to be used _i ,K _j UCI carried by PUCCH orFeeding back the data carried by the PUSCH to the second communication equipment, wherein g (t) is a forming filter determined to be used, L _i To determine the number of first time domain sampling points used, K _j To determine the first number of overlapping layers to use.

Step 820, the second communication device generates a first signal based on the first transmission configuration information;

optionally, the second communication device may be based on the first transmission configuration information g (t), L _i ,K _i And generating FTN signal sending data, namely a first signal.

Step 830, the first communication device requesting a whitening filter from the second communication device;

optionally, the first communication device may determine, according to the first transmission configuration information, a dimension W of the whitening filter, and determine that a dimension of the second target matrix is smaller than the dimension of the whitening filter, may send a first request to the second communication device requesting the whitening filter;

alternatively, the whitening filter matrix may be one number of overlapping layers K _j The number of the overlapping layers K _j Number L of all corresponding data samples _i All of (1) _j ，L _i And combining the whitening filter matrix of the maximum dimension in all the whitening filters corresponding to the combination, wherein the whitening filter matrix meets the constraint condition of the ROM capacity of the first communication equipment.

Step 840, the second communication device feeds back a whitening filter to the first communication device;

optionally, after receiving the first request of the first communication device, the second communication device feeds back the whitening filter to the first communication device;

optionally, the first communication device may receive a whitening filter fed back by the second communication device.

The first communication device processes the first signal according to the whitening filter, step 850.

Optionally, the first communication device may process the first signal according to a whitening filter.

It should be noted that, in the signal processing method provided in the embodiment of the present application, the execution main body may be a signal processing apparatus, or a control module in the signal processing apparatus for executing the signal processing method. In the embodiment of the present application, a signal processing apparatus executing a signal processing method is taken as an example to describe the signal processing apparatus provided in the embodiment of the present application.

Fig. 9 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present application, and as shown in fig. 9, the apparatus includes: a first determination module 910 and a first processing module 920; wherein,

a first determining module 910, configured to determine a whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices;

a first processing module 920, configured to process the first signal transmitted based on the first transmission configuration information based on the whitening filter, optionally, the signal processing apparatus determines the whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrixes through the first determining module 910, and processes the first signal transmitted based on the first transmission configuration information based on the whitening filter through the first processing module 920.

It should be noted that the apparatus provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

Optionally, the apparatus further comprises:

a second determining module for determining the pre-stored one or more whitening filter matrices based on a protocol pre-definition; or

A third determining module, configured to determine the one or more pre-stored whitening filter matrices based on second transmission configuration information and a shaping filter corresponding to the second transmission configuration information;

wherein the third determination module is to:

for one or more overlapping layers, based on one or more time domain sampling points corresponding to each overlapping layer and the shaping filter, determining a first whitening filter matrix of a maximum dimension corresponding to each overlapping layer, or a second whitening filter matrix of a maximum dimension corresponding to the overlapping layers under the constraint of the ROM capacity of the first communication device. Optionally, the first determining module is configured to:

Optionally, the first determining module is configured to:

determining a second target matrix corresponding to the first number of overlapping layers in the one or more pre-stored whitening filter matrices based on the first number of overlapping layers;

Optionally, the first determining module is configured to:

and in the case that the whitening filter matrix is the first whitening filter matrix, determining a sub-matrix of the second target matrix as the whitening filter by taking the first element of the second target matrix as the first element of the whitening filter based on the dimension of the whitening filter.

Optionally, the first determining module is configured to:

and in the case that the whitening filter matrix is a second whitening filter matrix, in the case that the dimension of the second target matrix is larger than that of the whitening filter, determining a sub-matrix of the second target matrix as the whitening filter by taking the first element of the second target matrix as the first element of the whitening filter based on the dimension of the whitening filter.

Optionally, the first determining module is configured to:

if the whitening filter matrix is a second whitening filter matrix, sending a first request to a second communication device if the dimension of the second target matrix is smaller than the dimension of the whitening filter, the first request requesting the whitening filter;

and acquiring the whitening filter sent by the second communication equipment.

Optionally, when the first communication device is a network side, the whitening filter sent by the second communication device is carried by uplink control information UCI, or carried by a PUCCH or a PUSCH.

Optionally, when the first communication device is a terminal, the whitening filter sent by the second communication device is carried by DCI or dedicated-RRC, or is carried by a PDCCH or a PDSCH.

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the whitening filter sent by the second communication device is carried by a sidelink control signaling SCI or other message of the sidelink, or is carried by a PSCCH, or a PSBCH.

Optionally, the first determining module is configured to:

determining the whitening filter by a Cholesky decomposition algorithm based on the dimension of the whitening filter if the whitening filter matrix is a second whitening filter matrix and if the dimension of the second target matrix is less than the dimension of the whitening filter; or determining the whitening filter based on the second target matrix.

Optionally, the apparatus further comprises:

a fourth determining module, configured to determine, based on second transmission configuration information and a shaping filter corresponding to the second transmission configuration information, a shaping filter corresponding to first transmission configuration information and the first transmission configuration information;

the first sending module is used for sending second indication information to second communication equipment, and is used for indicating the first transmission configuration information and the forming filter corresponding to the first transmission configuration information;

The signal processing apparatus in the embodiment of the present application may be an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The electronic device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The signal processing apparatus provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 2 to fig. 8, and achieve the same technical effect, and is not described herein again to avoid repetition.

Optionally, fig. 10 is a schematic structural diagram of a communication device provided in an embodiment of the present application, and as shown in fig. 10, a communication device 1000 includes a processor 1001, a memory 1002, and a program or an instruction stored in the memory 1002 and executable on the processor 1001, for example, when the communication device 1000 is a terminal, the program or the instruction is executed by the processor 1001 to implement each process of the foregoing method embodiment, and the same technical effect can be achieved. When the communication device 1000 is a network-side device, the program or the instructions are executed by the processor 1001 to implement the processes of the above method embodiments, and the same technical effect can be achieved.

Optionally, the first communication device may be a network side device, and the second communication device may be a terminal;

optionally, the second communication device may be a network side device, and the first communication device may be a terminal;

alternatively, the first communication device may be a terminal and the second communication device may be a terminal.

Fig. 11 is a schematic hardware structure diagram of a terminal according to an embodiment of the present application.

The terminal 1100 includes, but is not limited to: at least some of the components of the radio frequency unit 1101, the network module 1102, the audio output unit 1103, the input unit 1104, the sensor 1105, the display unit 1106, the user input unit 1107, the interface unit 1108, the memory 1109, the processor 1110, and the like.

Those skilled in the art will appreciate that the terminal 1100 can further include a power supply (e.g., a battery) for supplying power to the various components, and the power supply can be logically connected to the processor 1110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that in the embodiment of the present application, the input Unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042, and the Graphics processor 11041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. A touch panel 11071, also called a touch screen. The touch panel 11071 may include two portions of a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 1101 receives information from a communication peer and then processes the information to the processor 1110; and in addition, the information to be transmitted is sent to the opposite communication terminal. In general, radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1109 may be used for storing software programs or instructions as well as various data. The memory 1109 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 1109 may include a high-speed random access Memory and may also include a nonvolatile Memory, which may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1110 may include one or more processing units; alternatively, processor 1110 may integrate an application processor that primarily handles operating systems, user interfaces, and applications or instructions, etc. and a modem processor that primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1110.

Wherein processor 1110 is configured to:

Optionally, the processor 1110 is configured to:

Optionally, the first transmission configuration information includes a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal.

Optionally, the second transmission configuration information includes one or more overlapping layer numbers and one or more time-domain sampling point numbers;

processor 1110 is configured to:

Optionally, the processor 1110 is configured to:

and acquiring the whitening filter sent by the second communication equipment.

Optionally, where the whitening-filter matrix is a second whitening-filter matrix, processor 1110 is configured to:

Optionally, the processor 1110 is configured to:

The terminal embodiment in the embodiment of the present application is a product embodiment corresponding to the method embodiment, and all implementation manners in the method embodiment are applicable to the terminal embodiment, and may also achieve the same or similar technical effects, so that details are not repeated herein.

As shown in fig. 12, the network-side device 1200 includes: antenna 1201, radio frequency device 1202, baseband device 1203. Antenna 1201 is connected to radio frequency device 1202. In the uplink direction, the rf device 1202 receives information through the antenna 1201 and sends the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes information to be transmitted and transmits the processed information to the radio frequency device 1202, and the radio frequency device 1202 processes the received information and transmits the processed information through the antenna 1201.

The above band processing means may be located in the baseband apparatus 1203, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1203, where the baseband apparatus 1203 includes a processor 1204 and a memory 1205.

The baseband apparatus 1203 may include at least one baseband board, for example, on which a plurality of chips are disposed, as shown in fig. 12, where one chip, for example, the processor 1204, is connected to the memory 1205 to call up a program in the memory 1205 to perform the network device operations shown in the above method embodiments.

The baseband device 1203 may further include a network interface 1206 for exchanging information with the radio frequency device 1202, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device in the embodiment of the present application further includes: the instructions or programs stored in the memory 1205 and executable on the processor 1204, the processor 1204 invokes the instructions or programs in the memory 1205 to execute the method executed by each module shown in fig. 9, and achieve the same technical effect, which is not described herein for avoiding repetition.

Wherein the processor 1204 is configured to:

determining a whitening filter based on first transmission configuration information and one or more pre-stored whitening filter matrices, the whitening filter for processing a first signal transmitted based on the first transmission configuration information;

the first transmission configuration information includes a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal.

Optionally, the processor 1204 is configured to:

wherein the processor 1204 is configured to:

Optionally, the processor 1204 is configured to:

and acquiring the whitening filter sent by the second communication equipment.

Optionally, when the first communication device is a terminal and the second communication device is a terminal, the whitening filter sent by the second communication device is carried by a sidelink control signaling SCI or another message of the sidelink, or is carried by a PSCCH, psch, or PSBCH.

Optionally, in case the whitening-filter matrix is a second whitening-filter matrix, the processor 1204 is configured to:

Optionally, the processor 1204 is configured to:

The network side device embodiment in the embodiment of the present application is a product embodiment corresponding to the above method embodiment, and all implementation manners in the above method embodiment are applicable to the network side device embodiment, and may also achieve the same or similar technical effects, so that details are not described herein again.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or an instruction, so as to implement each process of the signal processing method embodiment, and achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a communication device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method of signal processing, the method comprising:

2. The signal processing method of claim 1, further comprising:

3. The signal processing method of claim 1, wherein the first transmission configuration information comprises a first number of overlapping layers and a first number of time-domain sampling points corresponding to the first signal.

4. The signal processing method of claim 2, wherein the second transmission configuration information comprises one or more number of overlapping layers, and one or more number of time-domain sampling points;

for one or more overlapping layers, based on one or more time domain sampling points corresponding to each overlapping layer and the shaping filter, determining a first whitening filter matrix of a maximum dimension corresponding to each overlapping layer, or a second whitening filter matrix of a maximum dimension corresponding to the overlapping layers under a constraint condition of a Read Only Memory (ROM) capacity of the first communication device.

5. The signal processing method of claim 4, wherein the first communication device determines the whitening filter based on the first transmission configuration information and one or more pre-stored whitening filter matrices, comprising:

6. The signal processing method of claim 5, wherein the determining the whitening filter based on the dimensions of the whitening filter and the pre-stored one or more whitening filter matrices comprises:

7. The method of claim 6, wherein in the case that the whitening-filter matrix is a first whitening-filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix comprises:

8. The method of claim 6, wherein, in the case that the whitening-filter matrix is a second whitening-filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix comprises:

9. The method of claim 6, wherein, in the case that the whitening-filter matrix is a second whitening-filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix comprises:

and acquiring the whitening filter sent by the second communication equipment.

10. The signal processing method according to claim 9, wherein, in a case that the first communication device is a network side, the whitening filter sent by the second communication device is carried by uplink control information UCI, or carried by a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH.

11. The signal processing method according to claim 9, wherein in a case that the first communication device is a terminal, the whitening filter sent by the second communication device is carried by downlink control information DCI or dedicated-RRC, or is carried by a physical downlink control channel PDCCH or a physical downlink shared channel PDSCH.

12. The signal processing method of claim 9, wherein when the first communication device is a terminal and the second communication device is a terminal, the whitening filter sent by the second communication device is carried by a sidelink control signaling SCI or other message of sidelink, or carried by a physical bypass control channel PSCCH or a physical bypass shared channel PSCCH or a physical bypass broadcast channel PSBCH.

13. The method of claim 6, wherein, in the case that the whitening-filter matrix is a second whitening-filter matrix, the determining the whitening filter based on the dimension of the whitening filter and the second target matrix comprises:

14. The signal processing method of claim 2, further comprising:

15. A signal processing apparatus, characterized in that the apparatus comprises:

16. The signal processing apparatus of claim 15, wherein the apparatus further comprises:

17. The signal processing apparatus of claim 16, wherein the second transmission configuration information comprises one or more number of overlapping layers, and one or more number of time-domain sampling points;

wherein the third determination module is to:

18. The signal processing apparatus of claim 17, wherein the first determining module is configured to:

19. The signal processing apparatus of claim 18, wherein the first determining module is configured to:

20. The signal processing apparatus of claim 19, wherein the first determining module is configured to:

21. The signal processing apparatus of claim 19, wherein the first determining module is configured to:

22. The signal processing apparatus of claim 19, wherein the first determining module is configured to:

and acquiring the whitening filter sent by the second communication equipment.

23. The signal processing apparatus of claim 19, wherein the first determining module is configured to:

24. The signal processing apparatus of claim 16, wherein the apparatus further comprises:

and the first transmission configuration information and the shaping filter corresponding to the first transmission configuration information are used for generating the first signal by the second communication equipment.

25. A communication device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the signal processing method according to any one of claims 1 to 14.

26. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by the processor, implement the steps of the signal processing method according to any one of claims 1 to 14.