WO2018045490A1 - Pilot symbol sending method and apparatus - Google Patents
Pilot symbol sending method and apparatus Download PDFInfo
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- WO2018045490A1 WO2018045490A1 PCT/CN2016/098242 CN2016098242W WO2018045490A1 WO 2018045490 A1 WO2018045490 A1 WO 2018045490A1 CN 2016098242 W CN2016098242 W CN 2016098242W WO 2018045490 A1 WO2018045490 A1 WO 2018045490A1
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- target resource
- resource block
- carrier function
- pilot symbol
- function
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Definitions
- the present disclosure relates to the field of wireless communications, and in particular, to a method and apparatus for transmitting pilot symbols.
- the signals received by the receiving end are superposed by signals that have undergone different transmission paths.
- the difference in phase and delay of the signals of different transmission paths will cause the amplitude and phase fluctuation of the superposed signals, and the above process is the channel fading phenomenon.
- the transmitting end In the process of transmitting data using the filter bank multi-carrier technique, the transmitting end generally uses shift quadrature amplitude modulation to modulate the data so that the data symbols and other resource blocks on each resource block in the time-frequency two-dimensional grid The interference caused by the data symbols on them is orthogonal in phase, so that the receiving end can obtain data symbols that are unaffected by the interference.
- the channel fading existing in the actual channel will destroy the phase orthogonality between the data symbols and the interference.
- the receiving end needs to according to the channel fading value experienced by the data symbols during transmission. Design a suitable equalizer to compensate for the effects of channel fading.
- the receiving end and the transmitting end may agree on the pilot symbol first, and then the transmitting end modulates and transmits the pilot symbol, and the receiving end may according to the received pilot symbol and the pre-agreed agreement.
- the pilot symbols estimate the channel fading value of the channel.
- the pilot symbols are affected by the channel fading, and are also interfered by the data symbols on the adjacent resource blocks, so that accurate channel fading values cannot be obtained.
- the transmitting end may first determine a resource block other than the resource block in which the pilot symbols are located to transmit the auxiliary pilot symbols, and determine the auxiliary pilot symbols. And the interference of the data symbols on the other resource blocks outside the resource block where the pilot symbols are located on the pilot symbols, and then design the auxiliary pilot symbols, so that the auxiliary pilot symbols interfere with the pilot symbols, and other resource blocks The interference of the data symbols to the pilot symbols cancels each other out. In this way, the receiving end can receive the pilot symbols that are not affected by the interference, so that the received pilot symbols can be determined according to the received pilot symbols. Channel fading value.
- the auxiliary pilot symbols will occupy additional time-frequency resource blocks, so that more time-frequency resources are consumed in the process of transmitting pilot symbols.
- the embodiments of the present disclosure provide a method and apparatus for transmitting pilot symbols.
- the technical solution is as follows:
- a method of transmitting a pilot symbol comprising:
- the transmitting end may first determine, according to the data symbols and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the signals of the multiple interference resource blocks corresponding to the target resource block to the target resource block. Interference value; the transmitting end may determine the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol of the target resource block and the foregoing signal interference value; then the transmitting end may send the foregoing to the receiving end through the target resource block. The determined pilot symbol.
- the transmitting end may first determine the signal interference value of the pilot symbol according to the data symbol and the carrier function in each resource block, and then add the initial pilot symbol before transmitting the pilot symbol.
- the offset amount used to cancel the signal interference so that the purpose of eliminating the signal interference can be achieved without using other resource blocks, and therefore, the time-frequency resources consumed in the process of transmitting the pilot symbols are less.
- the transmitting end determines the pilot symbol to be sent of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block, including: the initial pilot that the transmitting end can be in the target resource block.
- the determined signal interference value is subtracted from the symbol, and then the pilot symbol of the target resource block to be transmitted can be obtained.
- the method further includes: receiving, by the transmitting end, a channel fading value of the plurality of target resource blocks sent by the receiving end; and determining, by the transmitting end, the pilot symbol to be transmitted according to the channel fading value of the multiple target resource blocks a channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block; the transmitting end according to the data symbol and the carrier function in the plurality of interfering resource blocks corresponding to the first target resource block, and a carrier function in the first target resource block And a channel fading value corresponding to the plurality of interference resource blocks corresponding to the first target resource block, determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block; and the transmitting end is according to the first target Determining the first target resource by using an initial pilot symbol of the resource block and a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block a pilot symbol to be
- the receiving end may return the determined channel fading value of each channel to the transmitting end, so that the transmitting end may correspond to each resource block when estimating the signal interference value received by the pilot symbol.
- the channel fading value is taken into consideration, so that the estimated signal interference value has high accuracy.
- the pilot symbol received by the receiving end can accurately reflect the channel fading value of each channel.
- a method for transmitting a pilot symbol comprising:
- the sending end acquires a preset second carrier function, and determines a first carrier function orthogonal to the second carrier function at the preset time-frequency position;
- the transmitting end modulates the pilot symbols by using the first carrier function, transmits the modulated pilot symbols to the receiving end, and modulates the data symbols by the second carrier function, and transmits the modulated data symbols to the receiving end.
- the transmitting end may determine a first carrier function that is orthogonal at a preset time-frequency position according to a preset second carrier function, and then separately use the two carrier functions to respectively perform data on the data.
- the symbol and the pilot symbol are modulated, so that the signal interference of the data symbol to the pilot symbol during signal transmission can be effectively avoided, and no other resource blocks are needed, so the time-frequency resource consumed in the process of transmitting the pilot symbol is avoided. less.
- the spectral main lobe widths of the plurality of sub-functions of the first carrier function are all less than a preset threshold.
- the sending end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position, including: the sending end acquires the preset number
- the two carrier function is calculated such that the first formula of the first carrier function and the second carrier function has a value of zero at a preset time-frequency position, and a weighting coefficient corresponding to each sub-function of the first carrier function is required, wherein
- the first formula is a preset formula for reacting the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain; determining the first according to the weighting coefficient corresponding to each sub-function A carrier function.
- the transmitting end first calculates an algorithm for calculating two function correlations, and calculates a first carrier function in a preset time-frequency position that is orthogonal to the preset second carrier function. , the weighting coefficient corresponding to each sub-function, and then determining the first load according to the weighting coefficient corresponding to each sub-function The wave function, so that the required first carrier function can be accurately obtained.
- the first carrier function is an even function and/or a real function.
- the correlation function property of the first carrier function may be first defined, so that the solution calculation of the first carrier function may be simplified.
- a transmitting end includes a processor and a transceiver; and the processor implements the method for transmitting a pilot symbol provided by the foregoing first aspect by executing an instruction.
- a fourth aspect provides a transmitting end, where the transmitting end includes a processor and a transceiver; and the processor implements the method for transmitting the pilot symbols provided by the foregoing second aspect by executing an instruction.
- an apparatus for transmitting pilot symbols comprising at least one module, the at least one module for implementing the method of transmitting pilot symbols provided by the first aspect above.
- an apparatus for transmitting pilot symbols comprising at least one module, the at least one module for implementing the method for transmitting pilot symbols provided by the second aspect above.
- the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource.
- the signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end sends the target resource block to the receiving end through the target resource block.
- the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
- FIG. 1 is a schematic structural diagram of a transmitting end according to an embodiment of the present disclosure
- FIG. 2 is a flowchart of a method for transmitting a pilot symbol according to an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of a working principle of a transmitting end according to an embodiment of the present disclosure
- FIG. 4 is a schematic diagram of a working principle of a receiving end according to an embodiment of the present disclosure
- FIG. 5 is a time-frequency location diagram of a target resource block and an interference resource block according to an embodiment of the present disclosure
- FIG. 6 is a schematic structural diagram of a transmitting end according to an embodiment of the present disclosure.
- FIG. 7 is a flowchart of a method for transmitting a pilot symbol according to an embodiment of the present disclosure
- FIG. 8 is a schematic structural diagram of an apparatus for transmitting a pilot symbol according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of an apparatus for transmitting a pilot symbol according to an embodiment of the present disclosure.
- a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer.
- an application running on a computing device and the computing device can be a component.
- One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon.
- These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet)
- the network interacts with other systems to communicate in a local and/or remote process.
- a wireless network device which may be referred to as a receiving end and/or a transmitting end
- the communication may also be used for communication with one or more base stations having partial user equipment functions (such as communication between a macro base station and a micro base station, such as an access point); the wireless network device may also be a user equipment, user
- the device can be used for communication with one or more user devices (such as D2D communication), and can also be used to communicate with one or more base stations.
- User equipment may also be referred to as user terminals and may include systems, subscriber units, subscriber stations, mobile stations, mobile wireless terminals, mobile devices, nodes, devices, remote stations, remote terminals, terminals, wireless communication devices, wireless communication devices, or Some or all of the features of the user agent.
- User equipment can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, smart phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), laptop computers, handheld communication devices, handheld computing Devices, satellite wireless devices, wireless modem cards, and/or other processing devices for communicating over wireless systems.
- SIP Session Initiation Protocol
- WLL wireless local loop
- PDAs personal digital assistants
- laptop computers handheld communication devices
- handheld computing Devices satellite wireless devices
- wireless modem cards wireless modem cards
- a base station may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), or some other network entity, and may include some or all of the functions of the above network entities.
- the base station can communicate with the wireless terminal over the air interface. This communication can be done by one or more sectors.
- the base station can act as a router between the wireless terminal and the rest of the access network by converting the received air interface frame to an IP packet, wherein the access network includes an Internet Protocol (IP) network.
- IP Internet Protocol
- the base station can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network.
- the wireless network device can include a processor 110 and a transceiver 120, which can be coupled to the processor 110, respectively.
- the transceiver 120 can be divided into a receiver and a transmitter, and the hardware components included in each of them can be shared according to actual needs.
- the receiver can be used to receive signals, and the receiver can include, but is not limited to, an antenna, one or more oscillators, a coupler, an LNA (low noise amplifier), a duplexer, an analog to digital converter, a frequency converter, etc.
- the transmitter can be used to transmit signals, and the transmitter can include, but is not limited to, an antenna, one or more oscillators, a coupler, a power amplifier (PA), a duplexer, a digital to analog converter, a frequency converter, etc.
- PA power amplifier
- the transceiver 120 can be used to receive or send related processing of a message
- the processor 110 can include one or more processing units; the processor can be a general purpose processor, including a central processing unit (CPU) ), Network Processor (NP), etc.; can also be digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices.
- the program can include program code, the program code including computer operating instructions.
- the present application will present various aspects and systems around a system that can include multiple devices, components, modules, and the like. Example or feature. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
- information, message should indicate that the meaning to be expressed is consistent when the difference is not emphasized. "of”, “corresponding (relevant)” and “corresponding” can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
- the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application.
- the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
- Step 201 The transmitting end determines, according to the data symbols and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the signals of the multiple resource blocks corresponding to the target resource block to the target resource block. Interference value.
- the transmitting end may first convert the data symbol stream to be transmitted into a stream of N data symbols by serial-to-sequence conversion, and then n data symbol streams using filters
- ⁇ KT (t) represents a square wave function with a symbol period of KT, namely:
- K is the overlap factor, which represents the number of symbol periods that the impulse response of the prototype filter continues, and the selection of the weighting coefficient H k is shown in Table 1.
- T the symbol period.
- the signal sent by the final sender can be expressed as:
- the schematic diagram of the structure of the receiving end can be as shown in FIG. 4.
- the signal received by the receiving end can be expressed as:
- n(t) is a Gaussian white noise with a unilateral power spectrum of N 0 .
- a g (n, m) is the second formula of the original function of g 0 (t), which can reflect the correlation between the function after shifting in the time-frequency domain and the original function. Therefore, it can be used to determine the signal interference value between resource blocks, n k, l is the filtered noise:
- a g (n, m) shown in Table 2, A g (n, m ) values are listed in the table but not both may be approximately zero.
- the correlation of the carrier function of the resource block A g (kn, lm), so that the signal interference value of the plurality of interference resource blocks corresponding to the target resource block to the target resource block can be determined:
- (k, l) is the location where the target resource block is located, that is, on the kth subcarrier of the lth symbol, and Representing a set of interference resource blocks, for example, as shown in FIG. 5, if only the interference caused by a resource block around the target resource block is considered, it is possible to:
- the signal interference value determined here is only a rough estimate and is not an accurate signal interference value.
- This step can be specifically implemented by the processor 110.
- Step 202 The transmitting end determines, according to an initial pilot symbol and a signal interference value of the target resource block, a pilot symbol to be transmitted of the target resource block.
- the initial pilot symbol corresponding to the target resource block may be acquired first, and then the initial interference symbol is used according to the signal interference value.
- the pilot symbols are offset adjusted so that the pilot symbols to be transmitted of the target resource block can be determined.
- the initial pilot symbols may be considered as a sequence, that is, the initial pilot symbols transmitted in different resource blocks may be different, and the initial pilot signals may be pre-stored in the transmitting end and the receiving end. It can also be negotiated and temporarily generated by the sender and the receiver.
- This step may be specifically implemented by the processor 110 and the memory 120 in common.
- the offset adjustment is specifically to remove the signal interference value in the initial pilot symbol.
- the processing in step 202 may be as follows: the transmitting end subtracts the signal interference value from the initial pilot symbol of the target resource block, to obtain The pilot symbol of the target resource block to be transmitted.
- the transmitting end determines the signal interference value of the plurality of interference resource blocks corresponding to the target resource block to the target resource block. After that, the initial pilot symbol P corresponding to the target resource block may be obtained, so that the pilot symbol to be sent of the target resource block may be determined.
- This step can be specifically implemented by the processor 110.
- Step 203 The transmitting end sends, by using the target resource block, the pilot symbol to be sent of the target resource block to the receiving end.
- the transmitting end may modulate the pilot symbol to be transmitted by using the carrier function of the target resource block, and then send the pilot to the receiving end in the target resource block. symbol.
- This step can be specifically implemented by the transceiver 120.
- the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value.
- the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value.
- Step 204 The receiving end receives the pilot symbol sent by the transmitting end through the target resource block.
- the receiving end may receive the pilot symbol affected by channel fading, signal interference, noise interference, and the like.
- Step 205 The receiving end determines a channel fading value of the target resource block according to the received pilot symbol and the initial pilot symbol of the target resource block.
- the receiving end may determine the channel fading value of the target resource block according to the initial pilot symbol of the target resource block and the received pilot symbol. Specifically, the initial pilot symbol of the target resource block is P, and the received pilot symbol is
- the receiving end can determine the channel fading value of the target resource block.
- Step 206 The receiving end performs equalization compensation processing according to the channel fading value of the target resource block.
- the received signal may be subjected to equalization compensation processing according to the channel fading value, that is, the interference between the resource blocks and the phase orthogonality of the data symbols are restored.
- the receiving end may determine a channel fading value of the other resource block according to the channel fading value of the target resource block.
- the processing of step 206 may be as follows: the receiving end is based on the information of the multiple target resource blocks.
- the channel fading value determines a channel fading value of other resource blocks between the plurality of target resource blocks; the receiving end performs equalization compensation processing on the target resource block and other resource blocks according to the channel fading values of the target resource block and other resource blocks.
- the receiving end may calculate, by using an interpolation algorithm, other resource blocks other than the target resource blocks according to channel fading values of the plurality of target resource blocks, where The specific interpolation algorithm is not limited.
- the equalization compensation process may be performed according to the channel fading value.
- the receiving end may send the determined channel fading value of the target resource block to the sending end.
- the receiving end may send the channel fading value of the target resource block to the sending end.
- the sending end may estimate the signal interference value corresponding to the subsequent resource block according to the channel fading value of the received target resource block, and the corresponding processing may be as follows: the sending end receives the multiple target resource blocks sent by the receiving end. a channel fading value; the transmitting end determines a channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the plurality of target resource blocks; and the transmitting end corresponds to the first target resource block according to the first target resource block Determining the first target resource block corresponding to the data symbol and the carrier function in the plurality of interference resource blocks, the carrier function in the first target resource block, and the channel fading value corresponding to the plurality of interference resource blocks corresponding to the first target resource block a signal interference value of the plurality of interference resource blocks to the first target resource block; the transmitting end according to the initial pilot symbol of the first target resource block, and the plurality of interference resource blocks corresponding to the first target resource
- the transmitting end may first determine the first target resource block used for transmitting the pilot symbol and the corresponding multiple interference resource blocks. Then, based on the received channel fading values of the plurality of target resource blocks, the channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block is calculated by using an interpolation algorithm, so that the transmitting end may be corresponding to the multiple corresponding to the first target resource block.
- This step may be specifically implemented by the processor 110 and the transceiver 120.
- the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource.
- the signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end sends the target resource block to the receiving end through the target resource block.
- the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
- the present disclosure further provides a method for transmitting a pilot symbol, where the execution body of the method is a transmitting end having a function of transmitting a pilot symbol, wherein the transmitting end may be a base station, a mobile phone, etc., and the transmitting end may include a processor 610 and The transceiver 620, the processor 610 can be connected to the transceiver 620, as shown in FIG.
- the processor 610 may be a control center of the transmitting end, and connect various parts of the transmitting end by using various interfaces and lines, and execute various functions and processing data of the transmitting end by running or executing an instruction or a program received by the transceiver 620, thereby performing the transmitting end. Overall monitoring.
- the processor 610 may include one or more processing units; the processor 610 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; Signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device.
- Transceiver 620 can be used to receive and transmit signals.
- Step 701 The transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position.
- the transmitting end may first determine a target resource block for transmitting the pilot symbol, and then determine an interference resource block corresponding to the target resource block, where the preset time-frequency position is an interference resource block corresponding to Time-frequency position.
- the transmitting end may select a carrier function (ie, a second carrier function) used by the conventional filter bank multi-carrier system as a carrier function, and when transmitting the pilot symbol, the transmitting end may acquire the preset first.
- the second carrier function can then determine a first carrier function that is orthogonal to the second carrier function at the predetermined time-frequency location as a carrier function.
- This step can be specifically implemented by the processor 610.
- the spectral main lobe widths of the multiple sub-functions of the first carrier function are all less than a preset threshold.
- the preset threshold may be a bandwidth value of the subcarrier, the spectral main lobe width of the function is narrow, the side lobe fading is faster, and the interference to other functions is small.
- the transmitting end may select the first carrier function as
- the manner of determining the first carrier function may be as follows: the sending end acquires a preset second carrier function, and calculates the value of the first formula of the first carrier function and the second carrier function on the target resource block. Zero, the weighting coefficient corresponding to each sub-function of the required first carrier function; determining the first carrier function according to the weighting coefficient corresponding to each sub-function.
- the first formula of the first carrier function and the second carrier function may be used to reflect the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain.
- the carrier function ie, the second carrier function used by the traditional filter bank multi-carrier system
- the carrier function ie, the second carrier function
- the transmitting end may acquire the first.
- the preset second carrier function g 0 (t) determines the first formula of the first carrier function p 0 (t) and the second carrier function g 0 (t):
- the first formula is zero at the preset time-frequency position (ie, the interference resource block), that is, Represents a set of subscripts that interfere with a resource block, P 0 (t) and The corresponding carrier function is orthogonal, and the solution equation can be obtained:
- the transmitting end can solve the second carrier function according to the above formula.
- substituting p 0 (t) into the above solving equation may include:
- an algorithm for solving a system of equations can be used to determine a first carrier function that meets the requirements according to the above solution equation.
- This step can be specifically implemented by the processor 610.
- the transmitting end may simplify the solution process by adding a qualification condition to p 0 (t).
- the first carrier function is an even function sum or a real function.
- the set of interfering resource blocks is added to p 0 (t), so the following equation can be obtained:
- Step 702 The transmitting end modulates the pilot symbol by using the first carrier function, sends the modulated pilot symbol to the receiving end, and modulates the data symbol by using the second carrier function, and sends the tone to the receiving end.
- the data symbol after the system.
- the transmitting end may modulate the pilot symbols by using the first carrier function, and modulate the data symbols by using the second carrier function, thereby The modulated pilot symbols and data symbols are transmitted to the receiving end.
- This step may be specifically implemented by the processor 610 and the transceiver 620.
- the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value.
- the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value.
- Step 703 The receiving end receives the pilot symbol sent by the transmitting end through the target resource block.
- Step 704 The receiving end determines, according to the received pilot symbol and the initial pilot symbol, a channel fading value of the resource block corresponding to the pilot symbol.
- Step 705 The receiving end performs equalization compensation processing according to a channel fading value of the target resource block.
- the transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position; and the transmitting end performs the pilot symbol by using the first carrier function. Modulation, transmitting the modulated pilot symbols to the receiving end, and modulating the data symbols by the second carrier function, and transmitting the modulated data symbols to the receiving end.
- the transmitting end separately uses two carrier functions orthogonal to each other to transmit pilot symbols and data symbols, which can effectively avoid signal interference of the data symbols on the pilot symbols during signal transmission, and does not need to consume other resource blocks, thus, The process of transmitting pilot symbols consumes less time-frequency resources.
- FIG. 8 is a block diagram of an apparatus for transmitting pilot symbols according to an embodiment of the present disclosure.
- the means for transmitting the pilot symbols can be implemented as part or all of the device by software, hardware or a combination of both.
- the apparatus for transmitting a pilot symbol provided by the embodiment of the present disclosure may implement the process described in FIG. 2 of the embodiment of the present disclosure, where the apparatus for transmitting a pilot symbol includes: a first determining module 810, a second determining module 820, and a sending module 830.
- the receiving module 840 and the third determining module 850 wherein:
- a first determining module 810 configured to determine, according to a data symbol and a carrier function in the multiple interference resource blocks corresponding to the target resource block, and a carrier function in the target resource block, multiple interference resources corresponding to the target resource block
- the signal interference value of the block to the target resource block may specifically implement the determining function in the foregoing step 201, and other implicit steps of determining the signal interference value by the transmitting end.
- a second determining module 820 configured to: according to the initial pilot symbol of the target resource block and the signal The interference value, the pilot symbol to be transmitted of the target resource block is determined, and the determining function in the foregoing step 202 and the other implicit steps of determining the pilot symbol by the transmitting end may be specifically implemented.
- the sending module 830 is configured to send, by using the target resource block, a pilot symbol to be sent in the target resource block to the receiving end, where the sending function in the foregoing step 203 can be implemented, and the pilot symbol is sent by the sending end. Other implied steps.
- the second determining module 820 is configured to:
- the device further includes:
- the receiving module 840 is configured to receive a channel fading value of the multiple resource blocks sent by the receiving end and other resource blocks between the multiple target resource blocks;
- a third determining module 850 configured to determine a channel fading value of the multiple interference resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the multiple target resource blocks;
- the first determining module 810 is further configured to: according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the first target resource block, the carrier function in the first target resource block, and the a channel fading value corresponding to the plurality of interference resource blocks corresponding to the target resource block, and determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block;
- the second determining module 820 is further configured to: according to the initial pilot symbol of the first target resource block, and the signal of the first target resource block by using multiple interference resource blocks corresponding to the first target resource block And determining, by the interference value, a pilot symbol to be sent of the first target resource block;
- the sending module 830 is further configured to send, by using the first target resource block, a pilot symbol to be sent of the first target resource block to the receiving end.
- first determining module 810 the second determining module 820, and the third determining module 850 may be implemented by the processor 110, and the sending module 830 and the receiving module 840 may be implemented by the transceiver 120, or combined with the processor. 110 to achieve.
- the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource.
- the signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end passes the target resource Block, the pilot symbol to be transmitted of the target resource block is sent to the receiving end.
- the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
- FIG. 9 is a block diagram of an apparatus for transmitting pilot symbols according to an embodiment of the present disclosure.
- the means for transmitting the pilot symbols can be implemented as part or all of the device by software, hardware or a combination of both.
- the apparatus for transmitting a pilot symbol provided by the embodiment of the present disclosure may implement the process described in FIG. 7 of the embodiment of the present disclosure.
- the apparatus for transmitting a pilot symbol includes: a determining module 910, and a sending module 920, where:
- the determining module 910 is configured to obtain a preset second carrier function, and determine a first carrier function that is orthogonal to the second carrier function at a preset time-frequency position, where the determining function in the foregoing step 701 is specifically implemented, and Other implicit steps of the first carrier function are determined by the transmitting end.
- the sending module 920 is configured to: modulate the pilot symbol by using the first carrier function, send the modulated pilot symbol to the receiving end, and modulate the data symbol by using the second carrier function, to the receiving end Transmitting the modulated data symbols may specifically implement the sending function in the above step 702, and other implicit steps of transmitting the pilot symbols by the transmitting end.
- the spectral main lobe widths of the multiple sub-functions of the first carrier function are all less than a preset threshold.
- the determining module 910 is configured to:
- the sending end acquires a preset second carrier function, and calculates that the first carrier function and the first formula of the second carrier function have a value of zero at a preset time-frequency position, and the required first carrier a weighting coefficient corresponding to each subfunction of the function;
- the first carrier function is determined according to a weighting coefficient corresponding to each of the sub-functions.
- the first carrier function is an even function and/or a real function.
- determining module 910 may be implemented by the processor 610
- sending module 920 may be implemented by the transceiver 620 or implemented in conjunction with the processor 610.
- the transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position; and the transmitting end performs the pilot symbol by using the first carrier function. Modulation, transmitting the modulated pilot symbols to the receiving end, and modulating the data symbols by the second carrier function, and transmitting the modulated data symbols to the receiving end. In this way, the transmitting ends are orthogonal to each other.
- the two carrier functions transmit pilot symbols and data symbols, which can effectively avoid signal interference of the data symbols on the pilot symbols during signal transmission, and does not need to consume other resource blocks, so that the process of transmitting the pilot symbols is expensive. Less time and frequency resources.
- the apparatus for transmitting pilot symbols only uses the division of the foregoing functional modules when transmitting the pilot symbols.
- the functions may be allocated differently according to requirements.
- the function module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
- the apparatus for transmitting a pilot symbol provided by the foregoing embodiment is the same as the method for transmitting the pilot symbol. For the specific implementation process, refer to the method embodiment, and details are not described herein again.
- a common user in the art can understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
- the storage medium to which it is obtained may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
The present invention relates to the technical field of computing. Disclosed are a pilot symbol sending method and apparatus. The method comprises: first, a sending end can determine a value of signal interference of multiple interference resource blocks to a target resource block according to a carrier function in the target resource block for sending a pilot symbol and a data symbol and a carrier function in the multiple interference resource blocks corresponding to the target resource block, then can remove a component corresponding to the value of the signal interference from an initial pilot symbol so as to obtain a new pilot symbol, and then sends the new pilot symbol by means of the target resource block. By using the present disclosure, less time-frequency resources are consumed in a process of sending a pilot symbol.
Description
本公开涉及无线通信领域,特别涉及一种发送导频符号的方法和装置。The present disclosure relates to the field of wireless communications, and in particular, to a method and apparatus for transmitting pilot symbols.
信号从发送端到接收端的传输过程中,由于受到地形或障碍物的影响,会发生反射、绕射、衍射等现象,接收端接收到的信号是由经历不同传输路径的信号叠加而成的,而不同传输路径的信号在相位、时延上的不同会造成叠加后的信号在幅度、相位的起伏变化,上述过程即为信道衰落现象。During the transmission process of the signal from the transmitting end to the receiving end, due to the influence of terrain or obstacles, reflection, diffraction, diffraction, etc. may occur, and the signals received by the receiving end are superposed by signals that have undergone different transmission paths. The difference in phase and delay of the signals of different transmission paths will cause the amplitude and phase fluctuation of the superposed signals, and the above process is the channel fading phenomenon.
在使用滤波器组多载波技术传输数据的过程中,发送端一般采用移位正交幅度调制来对数据进行调制,以使时频二维网格中各资源块上的数据符号和其它资源块上的数据符号对其产生的干扰在相位上正交,从而接收端可以获得不受干扰影响的数据符号。In the process of transmitting data using the filter bank multi-carrier technique, the transmitting end generally uses shift quadrature amplitude modulation to modulate the data so that the data symbols and other resource blocks on each resource block in the time-frequency two-dimensional grid The interference caused by the data symbols on them is orthogonal in phase, so that the receiving end can obtain data symbols that are unaffected by the interference.
然而实际信道中存在的信道衰落会破坏数据符号和干扰之间的相位正交性,为了恢复干扰和数据符号的正交性,接收端需要根据数据符号在传输过程中所经历的信道衰落值,来设计合适的均衡器去补偿信道衰落所带来的影响。在确定信道衰落值的过程中,接收端和发送端可以先约定好导频符号,然后发送端对导频符号进行调制并发送,接收端则可以根据接收到的导频符号和预先约定好的导频符号对信道的信道衰落值进行估计。然而在上述传输导频符号的过程中,导频符号除了受到信道衰落的影响外,还会受到相邻资源块上的数据符号对其产生的干扰,因此无法得到准确的信道衰落值。However, the channel fading existing in the actual channel will destroy the phase orthogonality between the data symbols and the interference. In order to restore the interference and the orthogonality of the data symbols, the receiving end needs to according to the channel fading value experienced by the data symbols during transmission. Design a suitable equalizer to compensate for the effects of channel fading. In the process of determining the channel fading value, the receiving end and the transmitting end may agree on the pilot symbol first, and then the transmitting end modulates and transmits the pilot symbol, and the receiving end may according to the received pilot symbol and the pre-agreed agreement. The pilot symbols estimate the channel fading value of the channel. However, in the process of transmitting the pilot symbols, the pilot symbols are affected by the channel fading, and are also interfered by the data symbols on the adjacent resource blocks, so that accurate channel fading values cannot be obtained.
为避免上述干扰对导频符号的影响,发送端在发送导频符号时,可以先确定导频符号所在的资源块之外的一个资源块来发送辅助导频符号,同时确定除辅助导频符号和导频符号所在的资源块外的其它资源块上的数据符号对导频符号产生的干扰,然后设计辅助导频符号,使辅助导频符号对导频符号的干扰,和其它资源块上的数据符号对导频符号的干扰相互抵消。这样,接收端则可以接收到没有受到干扰影响的导频符号,从而可以根据接收到的导频符号确定信
道衰落值。In order to avoid the influence of the foregoing interference on the pilot symbols, when transmitting the pilot symbols, the transmitting end may first determine a resource block other than the resource block in which the pilot symbols are located to transmit the auxiliary pilot symbols, and determine the auxiliary pilot symbols. And the interference of the data symbols on the other resource blocks outside the resource block where the pilot symbols are located on the pilot symbols, and then design the auxiliary pilot symbols, so that the auxiliary pilot symbols interfere with the pilot symbols, and other resource blocks The interference of the data symbols to the pilot symbols cancels each other out. In this way, the receiving end can receive the pilot symbols that are not affected by the interference, so that the received pilot symbols can be determined according to the received pilot symbols.
Channel fading value.
在实现本公开的过程中,发明人发现上述处理中至少存在以下问题:In carrying out the process of the present disclosure, the inventors found that at least the following problems exist in the above processing:
辅助导频符号将占用额外的时频资源块,这样,发送导频符号的过程中耗费的时频资源较多。The auxiliary pilot symbols will occupy additional time-frequency resource blocks, so that more time-frequency resources are consumed in the process of transmitting pilot symbols.
发明内容Summary of the invention
为了解决上述处理的问题,本公开实施例提供了一种发送导频符号的方法和装置。所述技术方案如下:In order to solve the above problem, the embodiments of the present disclosure provide a method and apparatus for transmitting pilot symbols. The technical solution is as follows:
第一方面,提供了一种发送导频符号的方法,所述方法包括:In a first aspect, a method of transmitting a pilot symbol is provided, the method comprising:
发送端可以先根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及目标资源块中的载波函数,确定出目标资源块对应的多个干扰资源块对目标资源块的信号干扰值;然后发送端可以根据目标资源块的初始导频符号和上述信号干扰值,确定出目标资源块的待发送的导频符号;之后发送端则可以通过目标资源块,向接收端发送上述确定出的导频符号。The transmitting end may first determine, according to the data symbols and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the signals of the multiple interference resource blocks corresponding to the target resource block to the target resource block. Interference value; the transmitting end may determine the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol of the target resource block and the foregoing signal interference value; then the transmitting end may send the foregoing to the receiving end through the target resource block. The determined pilot symbol.
本公开实施例所示的方案,发送端可以先根据各资源块中的数据符号和载波函数确定导频符号所受的信号干扰值,然后在发送导频符号前,在初始导频符号中加上用于抵消信号干扰的偏置量,这样,无需耗费其他资源块即可以达到消除信号干扰的目的,因此,发送导频符号的过程中耗费的时频资源较少。In the solution shown in the embodiment of the present disclosure, the transmitting end may first determine the signal interference value of the pilot symbol according to the data symbol and the carrier function in each resource block, and then add the initial pilot symbol before transmitting the pilot symbol. The offset amount used to cancel the signal interference, so that the purpose of eliminating the signal interference can be achieved without using other resource blocks, and therefore, the time-frequency resources consumed in the process of transmitting the pilot symbols are less.
在一种可能的实现方式中,发送端根据目标资源块的初始导频符号和信号干扰值,确定目标资源块的待发送的导频符号,包括:发送端可以在目标资源块的初始导频符号中减去确定出的信号干扰值,然后可以得到目标资源块的待发送的导频符号。In a possible implementation, the transmitting end determines the pilot symbol to be sent of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block, including: the initial pilot that the transmitting end can be in the target resource block. The determined signal interference value is subtracted from the symbol, and then the pilot symbol of the target resource block to be transmitted can be obtained.
在一种可能的实现方式中,该方法还包括:发送端接收接收端发送的多个目标资源块的信道衰落值;发送端根据多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;发送端根据第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、第一目标资源块中的载波函数,以及第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值;发送端根据第一目标资源块的初始导频符号,和第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值,确定所述第一目标资源
块的待发送的导频符号;发送端通过所述第一目标资源块,向接收端发送第一目标资源块的待发送的导频符号。In a possible implementation manner, the method further includes: receiving, by the transmitting end, a channel fading value of the plurality of target resource blocks sent by the receiving end; and determining, by the transmitting end, the pilot symbol to be transmitted according to the channel fading value of the multiple target resource blocks a channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block; the transmitting end according to the data symbol and the carrier function in the plurality of interfering resource blocks corresponding to the first target resource block, and a carrier function in the first target resource block And a channel fading value corresponding to the plurality of interference resource blocks corresponding to the first target resource block, determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block; and the transmitting end is according to the first target Determining the first target resource by using an initial pilot symbol of the resource block and a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block
a pilot symbol to be transmitted of the block; the transmitting end sends, by the first target resource block, a pilot symbol to be transmitted of the first target resource block to the receiving end.
本公开实施例所示的方案,接收端可以将确定出的各信道的信道衰落值返回给发送端,这样,发送端在估计导频符号受到的信号干扰值时,可以将各资源块对应的信道衰落值考虑进去,从而估计的信号干扰值的准确性较高,相应的,接收端接收到的导频符号更可以准确的反应出各信道的信道衰落值。In the solution shown in the embodiment of the present disclosure, the receiving end may return the determined channel fading value of each channel to the transmitting end, so that the transmitting end may correspond to each resource block when estimating the signal interference value received by the pilot symbol. The channel fading value is taken into consideration, so that the estimated signal interference value has high accuracy. Correspondingly, the pilot symbol received by the receiving end can accurately reflect the channel fading value of each channel.
第二方面,提供了一种发送导频符号的方法,方法包括:In a second aspect, a method for transmitting a pilot symbol is provided, the method comprising:
发送端获取预设的第二载波函数,确定在预设时频位置处与第二载波函数正交的第一载波函数;The sending end acquires a preset second carrier function, and determines a first carrier function orthogonal to the second carrier function at the preset time-frequency position;
发送端通过第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过第二载波函数对数据符号进行调制,向接收端发送调制后的数据符号。The transmitting end modulates the pilot symbols by using the first carrier function, transmits the modulated pilot symbols to the receiving end, and modulates the data symbols by the second carrier function, and transmits the modulated data symbols to the receiving end.
本公开实施例所示的方案,发送端可以根据预设的第二载波函数,来确定出在预设的时频位置处相正交的第一载波函数,然后用两个载波函数分别对数据符号和导频符号进行调制,这样,可以有效避免在信号传输过程中,数据符号对导频符号的信号干扰,且无需耗费其他资源块,故而,发送导频符号的过程中耗费的时频资源较少。In the solution shown in the embodiment of the present disclosure, the transmitting end may determine a first carrier function that is orthogonal at a preset time-frequency position according to a preset second carrier function, and then separately use the two carrier functions to respectively perform data on the data. The symbol and the pilot symbol are modulated, so that the signal interference of the data symbol to the pilot symbol during signal transmission can be effectively avoided, and no other resource blocks are needed, so the time-frequency resource consumed in the process of transmitting the pilot symbol is avoided. less.
在一种可能的实现方式中,第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。In a possible implementation manner, the spectral main lobe widths of the plurality of sub-functions of the first carrier function are all less than a preset threshold.
在一种可能的实现方式中,发送端获取预设的第二载波函数,确定在预设时频位置处与第二载波函数正交的第一载波函数,包括:发送端获取预设的第二载波函数,计算为使第一载波函数和第二载波函数的第一公式在预设时频位置处的取值为零,所需的第一载波函数的每个子函数对应的加权系数,其中,所述第一公式为预设的、用于反应所述第二载波函数和在时频域移位后的第一载波函数的相关性的公式;根据每个子函数对应的加权系数,确定第一载波函数。In a possible implementation, the sending end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position, including: the sending end acquires the preset number The two carrier function is calculated such that the first formula of the first carrier function and the second carrier function has a value of zero at a preset time-frequency position, and a weighting coefficient corresponding to each sub-function of the first carrier function is required, wherein The first formula is a preset formula for reacting the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain; determining the first according to the weighting coefficient corresponding to each sub-function A carrier function.
本公开实施例所示的方案,发送端先采用计算两个函数相关性的算法,计算在预设时频位置处的、与预设的第二载波函数相正交的第一载波函数中的,每个子函数对应的加权系数,然后根据每个子函数对应的加权系数确定第一载
波函数,这样可以准确的求得所需的第一载波函数。In the solution shown in the embodiment of the present disclosure, the transmitting end first calculates an algorithm for calculating two function correlations, and calculates a first carrier function in a preset time-frequency position that is orthogonal to the preset second carrier function. , the weighting coefficient corresponding to each sub-function, and then determining the first load according to the weighting coefficient corresponding to each sub-function
The wave function, so that the required first carrier function can be accurately obtained.
在一种可能的实现方式中,第一载波函数为偶函数和/或实函数。In one possible implementation, the first carrier function is an even function and/or a real function.
本公开实施例所示的方案,可以先限定第一载波函数的相关函数性质,这样可以简化第一载波函数的求解计算。In the solution shown in the embodiment of the present disclosure, the correlation function property of the first carrier function may be first defined, so that the solution calculation of the first carrier function may be simplified.
第三方面,提供了一种发送端,该发送端包括处理器、收发器;处理器通过执行指令来实现上述第一方面所提供的发送导频符号的方法。In a third aspect, a transmitting end is provided, where the transmitting end includes a processor and a transceiver; and the processor implements the method for transmitting a pilot symbol provided by the foregoing first aspect by executing an instruction.
第四方面,提供了一种发送端,该发送端包括处理器、收发器;处理器通过执行指令来实现上述第二方面所提供的发送导频符号的方法。A fourth aspect provides a transmitting end, where the transmitting end includes a processor and a transceiver; and the processor implements the method for transmitting the pilot symbols provided by the foregoing second aspect by executing an instruction.
第五方面,提供了一种发送导频符号的装置,该装置包括至少一个模块,该至少一个模块用于实现上述第一方面所提供的发送导频符号的方法。In a fifth aspect, an apparatus for transmitting pilot symbols is provided, the apparatus comprising at least one module, the at least one module for implementing the method of transmitting pilot symbols provided by the first aspect above.
第六方面,提供了一种发送导频符号的装置,该装置包括至少一个模块,该至少一个模块用于实现上述第二方面所提供的发送导频符号的方法。In a sixth aspect, an apparatus for transmitting pilot symbols is provided, the apparatus comprising at least one module, the at least one module for implementing the method for transmitting pilot symbols provided by the second aspect above.
上述本公开实施例第二到第六方面所获得的技术效果与第一方面和第二方面中对应的技术手段获得的技术效果近似,在这里不再赘述。The technical effects obtained by the second to sixth aspects of the above-described embodiments of the present disclosure are similar to those obtained by the corresponding technical means in the first aspect and the second aspect, and are not described herein again.
本公开实施例提供的技术方案带来的有益效果是:The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure are:
本公开实施例中,发送端根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及目标资源块中的载波函数,确定目标资源块对应的多个干扰资源块对目标资源块的信号干扰值;发送端根据目标资源块的初始导频符号和信号干扰值,确定目标资源块的待发送的导频符号;发送端通过目标资源块,向接收端发送目标资源块的待发送的导频符号。这样,发送端可以在发送导频符号前,在导频符号中加上用于抵消信号干扰的偏置量,无需耗费其他资源块即可以达到消除信号干扰的目的,因此,发送导频符号的过程中耗费的时频资源较少。In the embodiment of the present disclosure, the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource. The signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end sends the target resource block to the receiving end through the target resource block. The pilot symbol sent. In this way, the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
为了更清楚地说明本公开实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通用户来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure. For ordinary users in the art, other drawings can be obtained from these drawings without any creative work.
图1是本公开实施例提供的一种发送端的结构示意图;FIG. 1 is a schematic structural diagram of a transmitting end according to an embodiment of the present disclosure;
图2是本公开实施例提供的一种发送导频符号的方法流程图;FIG. 2 is a flowchart of a method for transmitting a pilot symbol according to an embodiment of the present disclosure;
图3是本公开实施例提供的一种发送端的工作原理示意图;3 is a schematic diagram of a working principle of a transmitting end according to an embodiment of the present disclosure;
图4是本公开实施例提供的一种接收端的工作原理示意图;4 is a schematic diagram of a working principle of a receiving end according to an embodiment of the present disclosure;
图5是本公开实施例提供的一种目标资源块和干扰资源块的时频位置图;FIG. 5 is a time-frequency location diagram of a target resource block and an interference resource block according to an embodiment of the present disclosure;
图6是本公开实施例提供的一种发送端结构示意图;FIG. 6 is a schematic structural diagram of a transmitting end according to an embodiment of the present disclosure;
图7是本公开实施例提供的一种发送导频符号的方法流程图;FIG. 7 is a flowchart of a method for transmitting a pilot symbol according to an embodiment of the present disclosure;
图8是本公开实施例提供的一种发送导频符号的装置结构示意图;FIG. 8 is a schematic structural diagram of an apparatus for transmitting a pilot symbol according to an embodiment of the present disclosure;
图9是本公开实施例提供的一种发送导频符号的装置结构示意图。FIG. 9 is a schematic structural diagram of an apparatus for transmitting a pilot symbol according to an embodiment of the present disclosure.
为使本公开的目的、技术方案和优点更加清楚,下面将结合附图对本公开实施方式作进一步地详细描述。The embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.
如本申请所使用的,术语“组件”、“模块”、“系统”等等旨在指代计算机相关实体,该计算机相关实体可以是硬件、固件、硬件和软件的结合、软件或者运行中的软件。例如,组件可以是,但不限于是:在处理器上运行的处理、处理器、对象、可执行文件、执行中的线程、程序和/或计算机。作为示例,在计算设备上运行的应用和该计算设备都可以是组件。一个或多个组件可以存在于执行中的过程和/或线程中,并且组件可以位于一个计算机中以及/或者分布在两个或更多个计算机之间。此外,这些组件能够从在其上具有各种数据结构的各种计算机可读介质中执行。这些组件可以通过诸如根据具有一个或多个数据分组(例如,来自一个组件的数据,该组件与本地系统、分布式系统中的另一个组件进行交互和/或以信号的方式通过诸如互联网之类的网络与其它系统进行交互)的信号,以本地和/或远程过程的方式进行通信。As used herein, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, which may be hardware, firmware, a combination of hardware and software, software, or in operation. software. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer. As an example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon. These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet) The network interacts with other systems to communicate in a local and/or remote process.
此外,本申请结合无线网络设备(可称为接收端和/或发送端)来描述各个方面,该无线网络设备可以为基站,基站可以用于与一个或多个用户设备进行
通信,也可以用于与一个或多个具有部分用户设备功能的基站进行通信(比如宏基站与微基站,如接入点,之间的通信);该无线网络设备还可以为用户设备,用户设备可以用于一个或多个用户设备进行通信(比如D2D通信),也可以用于与一个或多个基站进行通信。用户设备还可以称为用户终端,并且可以包括系统、用户单元、用户站、移动站、移动无线终端、移动设备、节点、设备、远程站、远程终端、终端、无线通信设备、无线通信装置或用户代理的功能中的一些或者所有功能。用户设备可以是蜂窝电话、无绳电话、会话发起协议(SIP)电话、智能电话、无线本地环路(WLL)站、个人数字助理(PDA)、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡和/或用于在无线系统上进行通信的其它处理设备。基站还可以称为接入点、节点、节点B、演进节点B(eNB)或某种其它网络实体,并且可以包括以上网络实体的功能中的一些或所有功能。基站可以通过空中接口与无线终端进行通信。该通信可以通过一个或多个扇区来进行。基站可以通过将所接收的空中接口帧转换成IP分组,来用作无线终端和接入网络的其余部分之间的路由器,其中接入网络包括互联网协议(IP)网络。基站还可以对空中接口属性的管理进行协调,并且还可以是有线网络和无线网络之间的网关。如图1所示,无线网络设备可以包括处理器110和收发器120,收发器120可以分别与处理器110连接。收发器120可以分为接收器和发射器,它们各自所包括的硬件部分可以依据实际需求进行共用。接收器可以用于接收信号,接收器可以包括但不限于天线、一个或多个振荡器、耦合器、LNA(low noise amplifier,低噪声放大器)、双工器、模数转换器、变频器等硬件中的一项或多项。发射器可以用于发送信号,发射器可以包括但不限于天线、一个或多个振荡器、耦合器、功率放大器(power amplifier,PA)、双工器、数模转换器、变频器等硬件中的一项或多项。在本申请中,收发器120可以用于接收或发送消息的相关处理,处理器110可以包括一个或多个处理单元;处理器可以是通用处理器,包括中央处理器(Central Processing Unit,简称CPU)、网络处理器(Network Processor,简称NP)等;还可以是数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件等。具体地,程序可以包括程序代码,程序代码包括计算机操作指令。Furthermore, the present application describes various aspects in connection with a wireless network device (which may be referred to as a receiving end and/or a transmitting end), which may be a base station that can be used with one or more user equipments.
The communication may also be used for communication with one or more base stations having partial user equipment functions (such as communication between a macro base station and a micro base station, such as an access point); the wireless network device may also be a user equipment, user The device can be used for communication with one or more user devices (such as D2D communication), and can also be used to communicate with one or more base stations. User equipment may also be referred to as user terminals and may include systems, subscriber units, subscriber stations, mobile stations, mobile wireless terminals, mobile devices, nodes, devices, remote stations, remote terminals, terminals, wireless communication devices, wireless communication devices, or Some or all of the features of the user agent. User equipment can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, smart phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), laptop computers, handheld communication devices, handheld computing Devices, satellite wireless devices, wireless modem cards, and/or other processing devices for communicating over wireless systems. A base station may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), or some other network entity, and may include some or all of the functions of the above network entities. The base station can communicate with the wireless terminal over the air interface. This communication can be done by one or more sectors. The base station can act as a router between the wireless terminal and the rest of the access network by converting the received air interface frame to an IP packet, wherein the access network includes an Internet Protocol (IP) network. The base station can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network. As shown in FIG. 1, the wireless network device can include a processor 110 and a transceiver 120, which can be coupled to the processor 110, respectively. The transceiver 120 can be divided into a receiver and a transmitter, and the hardware components included in each of them can be shared according to actual needs. The receiver can be used to receive signals, and the receiver can include, but is not limited to, an antenna, one or more oscillators, a coupler, an LNA (low noise amplifier), a duplexer, an analog to digital converter, a frequency converter, etc. One or more of the hardware. The transmitter can be used to transmit signals, and the transmitter can include, but is not limited to, an antenna, one or more oscillators, a coupler, a power amplifier (PA), a duplexer, a digital to analog converter, a frequency converter, etc. One or more. In the present application, the transceiver 120 can be used to receive or send related processing of a message, the processor 110 can include one or more processing units; the processor can be a general purpose processor, including a central processing unit (CPU) ), Network Processor (NP), etc.; can also be digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices. In particular, the program can include program code, the program code including computer operating instructions.
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实
施例或特征。应当理解和明白的是,各个系统可以包括另外的设备、组件、模块等,并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外,还可以使用这些方案的组合。The present application will present various aspects and systems around a system that can include multiple devices, components, modules, and the like.
Example or feature. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
另外,在本申请实施例中,“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用示例的一词旨在以具体方式呈现概念。In addition, in the embodiments of the present application, the word "exemplary" is used to mean an example, an illustration, or a description. Any embodiment or design described as "example" in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.
本申请实施例中,信息(information),消息(message),应当指出的是,在不强调其区别时,其所要表达的含义是一致的。“的(of)”,“相应的(corresponding,relevant)”和“对应的(corresponding)”有时可以混用,应当指出的是,在不强调其区别时,其所要表达的含义是一致的。In the embodiment of the present application, information, message, should indicate that the meaning to be expressed is consistent when the difference is not emphasized. "of", "corresponding (relevant)" and "corresponding" can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。The network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
下面将结合具体实施方式,对图2所示的处理流程进行详细的说明,内容可以如下:The processing flow shown in FIG. 2 will be described in detail below with reference to specific implementations, and the content can be as follows:
步骤201,发送端根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及目标资源块中的载波函数,确定目标资源块对应的多个干扰资源块对目标资源块的信号干扰值。Step 201: The transmitting end determines, according to the data symbols and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the signals of the multiple resource blocks corresponding to the target resource block to the target resource block. Interference value.
在实施中,在使用滤波器组多载波技术传输数据的过程中,如图3所示,发送端可以先将待发送的数据符号流经过串并变换转换为N个数据符号流,之后对第n个数据符号流使用滤波器In the implementation, in the process of transmitting data by using the filter bank multi-carrier technology, as shown in FIG. 3, the transmitting end may first convert the data symbol stream to be transmitted into a stream of N data symbols by serial-to-sequence conversion, and then n data symbol streams using filters
对数据符号进行调制,其中,Modulating data symbols, wherein
ПKT(t)代表符号周期为KT的方波函数,即:П KT (t) represents a square wave function with a symbol period of KT, namely:
K为重叠因子,代表着原型滤波器的冲激响应所持续的符号周期的个数,而加权系数Hk的选择如表1所示。
K is the overlap factor, which represents the number of symbol periods that the impulse response of the prototype filter continues, and the selection of the weighting coefficient H k is shown in Table 1.
表1、FBMC的原型滤波器的加权系数Table 1, weighting coefficients of the prototype filter of FBMC
T代表符号周期。这样,最终的发送端发送的信号可以被表示为:T represents the symbol period. In this way, the signal sent by the final sender can be expressed as:
其中,xn,m为第n个数据流(每个数据流可对应一个子载波)的第m个数据符号,m=0,1,…,n=0,1,…,N-1,N为子载波的个数,Where x n,m is the mth data symbol of the nth data stream (each data stream can correspond to one subcarrier), m=0,1,...,n=0,1,...,N-1, N is the number of subcarriers,
接收端的结构原理示意图可以如图4所示,在加性高斯白噪声信道中,接收端接收到的信号可以表示为:The schematic diagram of the structure of the receiving end can be as shown in FIG. 4. In the additive white Gaussian noise channel, the signal received by the receiving end can be expressed as:
y(t)=x(t)+n(t),y(t)=x(t)+n(t),
其中,n(t)为单边功率谱为N0的高斯白噪声。对于数据符号xk,l来说,接收端可以使用匹配滤波器fk(t)=gk(KT-t)对y(t)进行滤波,并在KT+lT/2时刻对fk(t)的输出进行采样,从而可以得到样值rk,l:Where n(t) is a Gaussian white noise with a unilateral power spectrum of N 0 . For the data symbol x k,l , the receiving end can filter y(t) using the matched filter f k (t)=g k (KT-t) and f k at the time KT+lT/2 ( The output of t) is sampled so that the sample r k,l can be obtained:
作为xk,l的估计量,其中,为两者的卷积运算,为fk(t)的共轭函数,Ag(n,m)为以g0(t)原函数的第二公式,可以反应出在时频域移位后的函数与原函数的相关性,故而可以用来确定资源块之间的信号干扰值,nk,l为经过滤波之后的噪声:As an estimate of x k,l , where Convolution operation for both, For the conjugate function of f k (t), A g (n, m) is the second formula of the original function of g 0 (t), which can reflect the correlation between the function after shifting in the time-frequency domain and the original function. Therefore, it can be used to determine the signal interference value between resource blocks, n k, l is the filtered noise:
Ag(n,m)的值如表2所示,而未在表中列出的Ag(n,m)的取值均可以近似为0。The value of A g (n, m) shown in Table 2, A g (n, m ) values are listed in the table but not both may be approximately zero.
表2、g0(t)的取值Table 2, the value of g 0 (t)
n\mn\m | -4-4 | -3-3 | -2-2 | -1-1 | 00 | 11 | 22 | 33 | 44 |
-1-1 | 0.0050.005 | 0.043i0.043i | -0.125-0.125 | -0.206i-0.206i | 0.2390.239 | 0.206i0.206i | -0.125-0.125 | -0.043i-0.043i | 0.0050.005 |
00 | 00 | -0.067-0.067 | 00 | 0.5640.564 | 11 | 0.5640.564 | 00 | -0.067-0.067 | 00 |
11 | 0.0050.005 | -0.043i-0.043i | -0.125-0.125 | 0.206i0.206i | 0.2390.239 | -0.206i-0.206i | -0.125-0.125 | 0.043i0.043i | 0.0050.005 |
发送端在目标资源块中发送导频符号前,可以根据上述g0(t)的取值情况确定目标资源块对应的多个干扰资源块,具体的,目标资源块在时频网格中的坐标为(0,0),其对应的多个干扰资源块的坐标则可以为(n,m),n=±1、±2…,m=±1、±2…。之后发送端可以获取在干扰资源块中待发送的数据符号xn,m和载波函数,以及目标资源块中的载波函数,从而可以采用求解第二公式的方式确定干扰资源块的载波函数和目标资源块的载波函数的相关性Ag(k-n,l-m),这样,则可以确定目标资源块对应的多个干扰资源块对目标资源块的信号干扰值:Before the transmitting end sends the pilot symbol in the target resource block, the plurality of interference resource blocks corresponding to the target resource block may be determined according to the value of the above g 0 (t). Specifically, the target resource block is in the time-frequency grid. The coordinates are (0, 0), and the coordinates of the corresponding multiple interference resource blocks may be (n, m), n = ±1, ±2, ..., m = ±1, ±2. Then, the transmitting end can acquire the data symbol x n,m and the carrier function to be transmitted in the interference resource block , and the carrier function in the target resource block, so that the carrier function and the target of the interference resource block can be determined by solving the second formula. The correlation of the carrier function of the resource block A g (kn, lm), so that the signal interference value of the plurality of interference resource blocks corresponding to the target resource block to the target resource block can be determined:
其中,(k,l)为目标资源块所在的位置,即位于第l个符号的第k个子载波上,而代表干扰资源块的集合,例如,如图5所示,如果只考虑目标资源块周围一圈的资源块造成的干扰的话,就可以令:Where (k, l) is the location where the target resource block is located, that is, on the kth subcarrier of the lth symbol, and Representing a set of interference resource blocks, for example, as shown in FIG. 5, if only the interference caused by a resource block around the target resource block is considered, it is possible to:
具体的,通过选择不同的,可以在系统性能与计算复杂度之间进行折中考虑。值得一提的是,此处确定的信号干扰值只是大致的估计值,并不是精确的信号干扰值。Specifically, by choosing a different one , a compromise between system performance and computational complexity can be considered. It is worth mentioning that the signal interference value determined here is only a rough estimate and is not an accurate signal interference value.
该步骤具体可以由处理器110来实现。This step can be specifically implemented by the processor 110.
步骤202,发送端根据目标资源块的初始导频符号和信号干扰值,确定目标资源块的待发送的导频符号。Step 202: The transmitting end determines, according to an initial pilot symbol and a signal interference value of the target resource block, a pilot symbol to be transmitted of the target resource block.
在实施中,发送端在确定了目标资源块对应的多个干扰资源块对目标资源块的信号干扰值后,可以先获取目标资源块对应的初始导频符号,然后根据信号干扰值对该初始导频符号进行偏置调整,从而可以确定出目标资源块的待发送的导频符号。需要说明的是,在初始导频符号可以认为是一个序列,也就是说在不同资源块中发送的初始导频符号可以是不一样的,初始导频信号可以预先存储在发送端和接收端中,也可以由发送端和接收端进行协商,临时生成的。In an implementation, after determining, by the transmitting end, the signal interference value of the multiple resource blocks corresponding to the target resource block to the target resource block, the initial pilot symbol corresponding to the target resource block may be acquired first, and then the initial interference symbol is used according to the signal interference value. The pilot symbols are offset adjusted so that the pilot symbols to be transmitted of the target resource block can be determined. It should be noted that the initial pilot symbols may be considered as a sequence, that is, the initial pilot symbols transmitted in different resource blocks may be different, and the initial pilot signals may be pre-stored in the transmitting end and the receiving end. It can also be negotiated and temporarily generated by the sender and the receiver.
该步骤具体可以由处理器110和存储器120共同来实现。This step may be specifically implemented by the processor 110 and the memory 120 in common.
可选的,上述偏置调整具体为在初始导频符号中去除信号干扰值,相应的,步骤202的处理可以如下:发送端在目标资源块的初始导频符号中减去信号干扰值,得到目标资源块的待发送的导频符号。Optionally, the offset adjustment is specifically to remove the signal interference value in the initial pilot symbol. Correspondingly, the processing in step 202 may be as follows: the transmitting end subtracts the signal interference value from the initial pilot symbol of the target resource block, to obtain The pilot symbol of the target resource block to be transmitted.
在实施中,发送端在确定了目标资源块对应的多个干扰资源块对目标资源
块的信号干扰值后,可以先获取目标资源块对应的初始导频符号P,从而可以确定出目标资源块的待发送的导频符号
In the implementation, the transmitting end determines the signal interference value of the plurality of interference resource blocks corresponding to the target resource block to the target resource block. After that, the initial pilot symbol P corresponding to the target resource block may be obtained, so that the pilot symbol to be sent of the target resource block may be determined.
该步骤具体可以由处理器110实现。This step can be specifically implemented by the processor 110.
步骤203,发送端通过目标资源块,向接收端发送目标资源块的待发送的导频符号。Step 203: The transmitting end sends, by using the target resource block, the pilot symbol to be sent of the target resource block to the receiving end.
在实施中,发送端在确定了目标资源块的待发送的导频符号后,可以使用目标资源块的载波函数对待发送的导频符号进行调制,然后在目标资源块中向接收端发送导频符号。In an implementation, after determining the pilot symbol to be transmitted of the target resource block, the transmitting end may modulate the pilot symbol to be transmitted by using the carrier function of the target resource block, and then send the pilot to the receiving end in the target resource block. symbol.
该步骤具体可以由收发器120来实现。This step can be specifically implemented by the transceiver 120.
可选的,在步骤203后,接收端可以接收导频符号,并根据导频符号估计信道衰落值,还可以基于信道衰落值进行均衡补偿处理,相应的流程可以参见步骤204至步骤206:Optionally, after the step 203, the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value. For the corresponding process, refer to step 204 to step 206:
步骤204,接收端接收发送端通过目标资源块发送的导频符号。Step 204: The receiving end receives the pilot symbol sent by the transmitting end through the target resource block.
在实施中,在发送端通过目标资源块向接收端发送导频符号之后,接收端可以接收到经过信道衰落、信号干扰、噪声干扰等影响的导频符号。In an implementation, after the transmitting end sends the pilot symbol to the receiving end through the target resource block, the receiving end may receive the pilot symbol affected by channel fading, signal interference, noise interference, and the like.
步骤205,接收端根据接收到的导频符号和目标资源块的初始导频符号,确定目标资源块的信道衰落值。Step 205: The receiving end determines a channel fading value of the target resource block according to the received pilot symbol and the initial pilot symbol of the target resource block.
在实施中,接收端在接收到发送端通过目标资源块发送的导频符号后,可以根据目标资源块的初始导频符号和接收到的导频符号,确定出目标资源块的信道衰落值。具体的,目标资源块的初始导频符号为P,接收到的导频符号为In an implementation, after receiving the pilot symbol sent by the transmitting end through the target resource block, the receiving end may determine the channel fading value of the target resource block according to the initial pilot symbol of the target resource block and the received pilot symbol. Specifically, the initial pilot symbol of the target resource block is P, and the received pilot symbol is
其中,表示抵消后残余的信号干扰值与噪声的叠加,hk为信道衰落值。进而接收端可以确定目标资源块的信道衰落值
among them, It represents the superposition of residual signal interference value and noise after cancellation, and h k is the channel fading value. In turn, the receiving end can determine the channel fading value of the target resource block.
步骤206,接收端根据目标资源块的信道衰落值,进行均衡补偿处理。Step 206: The receiving end performs equalization compensation processing according to the channel fading value of the target resource block.
在实施中,接收端确定完目标资源块的信道衰落值后,可以根据该信道衰落值对接收到的信号进行均衡补偿处理,即恢复资源块间的干扰和数据符号的相位正交性。In the implementation, after the receiving end determines the channel fading value of the target resource block, the received signal may be subjected to equalization compensation processing according to the channel fading value, that is, the interference between the resource blocks and the phase orthogonality of the data symbols are restored.
可选的,接收端可以根据目标资源块的信道衰落值确定其它资源块的信道衰落值,相应的,步骤206的处理可以如下:接收端根据多个目标资源块的信
道衰落值,确定多个目标资源块之间的其它资源块的信道衰落值;接收端根据目标资源块和其它资源块的信道衰落值,对目标资源块和其它资源块进行均衡补偿处理。Optionally, the receiving end may determine a channel fading value of the other resource block according to the channel fading value of the target resource block. Correspondingly, the processing of step 206 may be as follows: the receiving end is based on the information of the multiple target resource blocks.
The channel fading value determines a channel fading value of other resource blocks between the plurality of target resource blocks; the receiving end performs equalization compensation processing on the target resource block and other resource blocks according to the channel fading values of the target resource block and other resource blocks.
在实施中,接收端接收到多个目标资源块的信道衰落值后,可以根据多个目标资源块的信道衰落值,利用插值算法计算多个目标资源块以外的其它资源块的,此处,具体插值算法不做限定。在确定了目标资源块和其它资源块的信道衰落值后,可以根据信道衰落值进行均衡补偿处理。In an implementation, after receiving the channel fading values of the plurality of target resource blocks, the receiving end may calculate, by using an interpolation algorithm, other resource blocks other than the target resource blocks according to channel fading values of the plurality of target resource blocks, where The specific interpolation algorithm is not limited. After determining the channel fading values of the target resource block and other resource blocks, the equalization compensation process may be performed according to the channel fading value.
可选的,接收端可以将确定出的目标资源块的信道衰落值发送给发送端,相应的,步骤206后可以有如下处理:接收端向发送端发送目标资源块的信道衰落值。Optionally, the receiving end may send the determined channel fading value of the target resource block to the sending end. Correspondingly, after step 206, the receiving end may send the channel fading value of the target resource block to the sending end.
可选的,发送端可以根据接收到的目标资源块的信道衰落值,对后续资源块对应的信号干扰值进行估计,相应的处理可以如下:发送端接收接收端发送的多个目标资源块的信道衰落值;发送端根据多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;发送端根据第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、第一目标资源块中的载波函数,以及第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值;发送端根据第一目标资源块的初始导频符号,和第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值,确定第一目标资源块的待发送的导频符号;发送端通过所述第一目标资源块,向接收端发送第一目标资源块的待发送的导频符号。Optionally, the sending end may estimate the signal interference value corresponding to the subsequent resource block according to the channel fading value of the received target resource block, and the corresponding processing may be as follows: the sending end receives the multiple target resource blocks sent by the receiving end. a channel fading value; the transmitting end determines a channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the plurality of target resource blocks; and the transmitting end corresponds to the first target resource block according to the first target resource block Determining the first target resource block corresponding to the data symbol and the carrier function in the plurality of interference resource blocks, the carrier function in the first target resource block, and the channel fading value corresponding to the plurality of interference resource blocks corresponding to the first target resource block a signal interference value of the plurality of interference resource blocks to the first target resource block; the transmitting end according to the initial pilot symbol of the first target resource block, and the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block a signal interference value, determining a pilot symbol to be transmitted of the first target resource block; the transmitting end is connected by the first target resource block Transmitting a first leading end to be sent to the target pilot symbol resource block.
在实施中,发送端接收到接收端发送的多个目标资源块的信道衰落值后,可以先确定下次用于发送导频符号的第一目标资源块和其对应的多个干扰资源块,然后基于接收到的多个目标资源块的信道衰落值,采用插值算法计算第一目标资源块对应的多个干扰资源块的信道衰落值,从而发送端可以根据第一目标资源块对应的多个干扰资源块中的数据符号xn,m和载波函数、第一目标资源块中的载波函数,以及第一目标资源块对应的多个干扰资源块对应的信道衰落值确定第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值具体的,
In an implementation, after receiving the channel fading value of the multiple target resource blocks sent by the receiving end, the transmitting end may first determine the first target resource block used for transmitting the pilot symbol and the corresponding multiple interference resource blocks. Then, based on the received channel fading values of the plurality of target resource blocks, the channel fading value of the plurality of interfering resource blocks corresponding to the first target resource block is calculated by using an interpolation algorithm, so that the transmitting end may be corresponding to the multiple corresponding to the first target resource block. a data symbol x n,m in the interference resource block and a carrier function, a carrier function in the first target resource block, and a channel fading value corresponding to the plurality of interference resource blocks corresponding to the first target resource block Determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block specific,
之后,发送端可以根据第一目标资源块的初始导频符号P和第一目标资源块对应的多个干扰资源块对第一目标资源块的信号干扰值确定第一目标资源块的待发送的导频符号其中,l=0,1,…m,k=1,2,…,n。进而,发送端可以通过第一目标资源块,向接收端发送第一目标资源块的待发送的导频符号。Afterwards, the transmitting end may perform signal interference value to the first target resource block according to the initial pilot symbol P of the first target resource block and the multiple interference resource blocks corresponding to the first target resource block. Determining a pilot symbol to be transmitted of the first target resource block Where l=0,1,...m,k=1,2,...,n. Further, the transmitting end may send, by using the first target resource block, the pilot symbol to be transmitted of the first target resource block to the receiving end.
该步骤具体可以由处理器110和收发器120共同实现。This step may be specifically implemented by the processor 110 and the transceiver 120.
本公开实施例中,发送端根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及目标资源块中的载波函数,确定目标资源块对应的多个干扰资源块对目标资源块的信号干扰值;发送端根据目标资源块的初始导频符号和信号干扰值,确定目标资源块的待发送的导频符号;发送端通过目标资源块,向接收端发送目标资源块的待发送的导频符号。这样,发送端可以在发送导频符号前,在导频符号中加上用于抵消信号干扰的偏置量,无需耗费其他资源块即可以达到消除信号干扰的目的,因此,发送导频符号的过程中耗费的时频资源较少。In the embodiment of the present disclosure, the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource. The signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end sends the target resource block to the receiving end through the target resource block. The pilot symbol sent. In this way, the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
本公开还提供了一种发送导频符号的方法,该方法的执行主体为具有发送导频符号功能的发送端,其中,该发送端可以是基站、手机等,发送端可以包括处理器610和收发器620,处理器610可以与收发器620进行连接,如图6所示。处理器610可以是发送端的控制中心,利用各种接口和线路连接发送端的各个部分,通过运行或执行收发器620接收的指令或程序,执行发送端的各种功能和处理数据,从而对发送端进行整体监控。处理器610可以包括一个或多个处理单元;处理器610可以是通用处理器,包括中央处理器(central processing unit,简称CPU)、网络处理器(network processor,简称NP)等;还可以是数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件等。收发器620可以用于接收和发送信号。The present disclosure further provides a method for transmitting a pilot symbol, where the execution body of the method is a transmitting end having a function of transmitting a pilot symbol, wherein the transmitting end may be a base station, a mobile phone, etc., and the transmitting end may include a processor 610 and The transceiver 620, the processor 610 can be connected to the transceiver 620, as shown in FIG. The processor 610 may be a control center of the transmitting end, and connect various parts of the transmitting end by using various interfaces and lines, and execute various functions and processing data of the transmitting end by running or executing an instruction or a program received by the transceiver 620, thereby performing the transmitting end. Overall monitoring. The processor 610 may include one or more processing units; the processor 610 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; Signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device. Transceiver 620 can be used to receive and transmit signals.
下面将结合具体实施方式,对图7所示的处理流程进行详细的说明,内容可以如下:
The processing flow shown in FIG. 7 will be described in detail below with reference to specific implementations, and the content can be as follows:
步骤701,发送端获取预设的第二载波函数,确定在预设时频位置处与第二载波函数正交的第一载波函数。Step 701: The transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position.
在实施中,考虑到在使用滤波器组多载波技术传输数据的过程中,导频符号和数据符号之间存在相互干扰,是由于滤波器组多载波系统中导频符号和数据符号的载波函数之间的相关特性所导致的,从而为了避免数据符号对导频符号的干扰,可以设计在预设时频位置处相互正交的两个载波函数,并通过这两个载波函数分别对导频符号和数据符号进行调制,此处,发送端可以先确定用于发送导频符号的目标资源块,然后确定该目标资源块对应的干扰资源块,上述预设时频位置即为干扰资源块对应的时频位置。故而,发送端在发送数据符号时,可以选用传统滤波器组多载波系统所使用的载波函数(即第二载波函数)作为载波函数,而在发送导频符号时,发送端可以先获取预设的第二载波函数,然后可以确定在预设时频位置处与第二载波函数正交的第一载波函数作为载波函数。In implementation, considering that in the process of transmitting data using the filter bank multi-carrier technique, mutual interference between pilot symbols and data symbols is due to the carrier function of the pilot symbols and data symbols in the filter bank multi-carrier system. The correlation between the two characteristics, so that in order to avoid interference of the data symbols with the pilot symbols, two carrier functions orthogonal to each other at the preset time-frequency position can be designed, and the pilots are respectively used by the two carrier functions. The symbol and the data symbol are modulated. Here, the transmitting end may first determine a target resource block for transmitting the pilot symbol, and then determine an interference resource block corresponding to the target resource block, where the preset time-frequency position is an interference resource block corresponding to Time-frequency position. Therefore, when transmitting the data symbol, the transmitting end may select a carrier function (ie, a second carrier function) used by the conventional filter bank multi-carrier system as a carrier function, and when transmitting the pilot symbol, the transmitting end may acquire the preset first. The second carrier function can then determine a first carrier function that is orthogonal to the second carrier function at the predetermined time-frequency location as a carrier function.
该步骤具体可以由处理器610来实现。This step can be specifically implemented by the processor 610.
可选的,第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。Optionally, the spectral main lobe widths of the multiple sub-functions of the first carrier function are all less than a preset threshold.
其中,预设阈值可以是子载波的频带宽度值,函数的频谱主瓣宽度较窄,旁瓣衰落则较快,对其它函数的干扰较小。The preset threshold may be a bandwidth value of the subcarrier, the spectral main lobe width of the function is narrow, the side lobe fading is faster, and the interference to other functions is small.
在实施中,发送端可以选择第一载波函数的形式为In an implementation, the transmitting end may select the first carrier function as
其中,为子函数,Dk(k=0,1,…,L-1)为子函数对应的加权系数,属于未知量。among them, For the sub-function, D k (k=0,1,...,L-1) is the weighting coefficient corresponding to the sub-function, which belongs to the unknown quantity.
可选的,上述确定第一载波函数的方式可以如下:发送端获取预设的第二载波函数,计算为使第一载波函数和第二载波函数的第一公式在目标资源块上的取值为零,所需的第一载波函数的每个子函数对应的加权系数;根据每个子函数对应的加权系数,确定第一载波函数。Optionally, the manner of determining the first carrier function may be as follows: the sending end acquires a preset second carrier function, and calculates the value of the first formula of the first carrier function and the second carrier function on the target resource block. Zero, the weighting coefficient corresponding to each sub-function of the required first carrier function; determining the first carrier function according to the weighting coefficient corresponding to each sub-function.
其中,第一载波函数和第二载波函数的第一公式可以用于反应第二载波函数和在时频域移位后的第一载波函数的相关性。Wherein, the first formula of the first carrier function and the second carrier function may be used to reflect the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain.
在实施中,发送端在发送数据符号时,可以选用传统滤波器组多载波系统所使用的载波函数(即第二载波函数)作为载波函数,而在发送导频符号时,
发送端可以先获取预设的第二载波函数g0(t),再确定第一载波函数p0(t)和第二载波函数g0(t)的第一公式:In the implementation, when the transmitting end sends the data symbol, the carrier function (ie, the second carrier function) used by the traditional filter bank multi-carrier system may be selected as the carrier function, and when the pilot symbol is transmitted, the transmitting end may acquire the first. The preset second carrier function g 0 (t) determines the first formula of the first carrier function p 0 (t) and the second carrier function g 0 (t):
然后使第一公式在预设时频位置(即干扰资源块)处的取值为零,即表示干扰资源块的下标的集合,P0(t)与对应的载波函数正交,可以得到求解方程:Then, the first formula is zero at the preset time-frequency position (ie, the interference resource block), that is, Represents a set of subscripts that interfere with a resource block, P 0 (t) and The corresponding carrier function is orthogonal, and the solution equation can be obtained:
进而发送端可以根据上述公式求解出第二载波函数,具体的,将p0(t)代入上述求解方程,可以有:Furthermore, the transmitting end can solve the second carrier function according to the above formula. Specifically, substituting p 0 (t) into the above solving equation may include:
其中,an,m,l为确定的已知量:Where a n,m,l are the determined known quantities:
于是求解方程变为:Then the solution equation becomes:
最终,可以采用求解一次方程组的算法,根据上述求解方程确定出符合要求的第一载波函数。Finally, an algorithm for solving a system of equations can be used to determine a first carrier function that meets the requirements according to the above solution equation.
该步骤具体可以由处理器610来实现。This step can be specifically implemented by the processor 610.
可选的,发送端可以通过对p0(t)追加限定条件来简化上述求解过程,相应的,第一载波函数为偶函数和、或实函数。Optionally, the transmitting end may simplify the solution process by adding a qualification condition to p 0 (t). Correspondingly, the first carrier function is an even function sum or a real function.
在实施中,首先,可以限定p0(t)是偶函数,即有p0(t)=p0(-t),此时根据Agp(n,m)的定义,可以得到Agp(n,m)=Agp(-n,-m),再者,如果限定p0(t)是实函数,则有其中,为Agp的共轭值。基于上述处理,可以用表示对p0(t)追加限定后干扰资源块的集合,故而可以得到以下求解方程:In the implementation, firstly, it can be defined that p 0 (t) is an even function, that is, there is p 0 (t)=p 0 (-t), and according to the definition of A gp (n, m), A gp can be obtained ( n,m)=A gp (-n,-m), and if the limit p 0 (t) is a real function, then there is among them, Is the conjugate value of A gp . Based on the above processing, it can be used It indicates that the set of interfering resource blocks is added to p 0 (t), so the following equation can be obtained:
步骤702,发送端通过第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过第二载波函数对数据符号进行调制,向接收端发送调
制后的数据符号。Step 702: The transmitting end modulates the pilot symbol by using the first carrier function, sends the modulated pilot symbol to the receiving end, and modulates the data symbol by using the second carrier function, and sends the tone to the receiving end.
The data symbol after the system.
在实施中,发送端在确定了相互正交的第一载波函数和第二载波函数之后,可以通过第一载波函数对导频符号进行调制,通过第二载波函数对数据符号进行调制,进而可以向接收端发送调制后的导频符号和数据符号。In an implementation, after determining the mutually orthogonal first carrier function and the second carrier function, the transmitting end may modulate the pilot symbols by using the first carrier function, and modulate the data symbols by using the second carrier function, thereby The modulated pilot symbols and data symbols are transmitted to the receiving end.
该步骤具体可以由处理器610和收发器620共同实现。This step may be specifically implemented by the processor 610 and the transceiver 620.
可选的,在步骤702后,接收端可以接收导频符号,并根据导频符号估计信道衰落值,还可以基于信道衰落值进行均衡补偿处理,相应的流程可以参见步骤703至步骤705:Optionally, after the step 702, the receiving end may receive the pilot symbol, and estimate the channel fading value according to the pilot symbol, and perform the equalization compensation process based on the channel fading value. For the corresponding process, refer to step 703 to step 705:
步骤703,接收端接收发送端通过目标资源块发送的导频符号。Step 703: The receiving end receives the pilot symbol sent by the transmitting end through the target resource block.
步骤704,接收端根据接收到的导频符号和初始导频符号,确定导频符号对应的资源块的信道衰落值。Step 704: The receiving end determines, according to the received pilot symbol and the initial pilot symbol, a channel fading value of the resource block corresponding to the pilot symbol.
步骤705,接收端根据目标资源块的信道衰落值,进行均衡补偿处理。Step 705: The receiving end performs equalization compensation processing according to a channel fading value of the target resource block.
本公开实施例中,发送端获取预设的第二载波函数,确定在预设时频位置处与第二载波函数正交的第一载波函数;发送端通过第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过第二载波函数对数据符号进行调制,向接收端发送调制后的数据符号。这样,发送端分别采用相互正交的两个载波函数发送导频符号和数据符号,可以有效避免在信号传输过程中,数据符号对导频符号的信号干扰,且无需耗费其他资源块,这样,发送导频符号的过程中耗费的时频资源较少。In the embodiment of the present disclosure, the transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position; and the transmitting end performs the pilot symbol by using the first carrier function. Modulation, transmitting the modulated pilot symbols to the receiving end, and modulating the data symbols by the second carrier function, and transmitting the modulated data symbols to the receiving end. In this way, the transmitting end separately uses two carrier functions orthogonal to each other to transmit pilot symbols and data symbols, which can effectively avoid signal interference of the data symbols on the pilot symbols during signal transmission, and does not need to consume other resource blocks, thus, The process of transmitting pilot symbols consumes less time-frequency resources.
图8是本公开实施例提供的发送导频符号的装置的框图。该发送导频符号的装置可以通过软件、硬件或者两者的结合实现成为装置中的部分或者全部。本公开实施例提供的发送导频符号的装置可以实现本公开实施例图2所述的流程,该发送导频符号的装置包括:第一确定模块810、第二确定模块820、发送模块830、接收模块840、第三确定模块850,其中:FIG. 8 is a block diagram of an apparatus for transmitting pilot symbols according to an embodiment of the present disclosure. The means for transmitting the pilot symbols can be implemented as part or all of the device by software, hardware or a combination of both. The apparatus for transmitting a pilot symbol provided by the embodiment of the present disclosure may implement the process described in FIG. 2 of the embodiment of the present disclosure, where the apparatus for transmitting a pilot symbol includes: a first determining module 810, a second determining module 820, and a sending module 830. The receiving module 840 and the third determining module 850, wherein:
第一确定模块810,用于根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及所述目标资源块中的载波函数,确定所述目标资源块对应的多个干扰资源块对所述目标资源块的信号干扰值,具体可以实现上述步骤201中的确定功能,以及由发送端确定信号干扰值的其他隐含步骤。a first determining module 810, configured to determine, according to a data symbol and a carrier function in the multiple interference resource blocks corresponding to the target resource block, and a carrier function in the target resource block, multiple interference resources corresponding to the target resource block The signal interference value of the block to the target resource block may specifically implement the determining function in the foregoing step 201, and other implicit steps of determining the signal interference value by the transmitting end.
第二确定模块820,用于根据所述目标资源块的初始导频符号和所述信号干
扰值,确定所述目标资源块的待发送的导频符号,具体可以实现上述步骤202中的确定功能,以及由发送端确定导频符号的其他隐含步骤。a second determining module 820, configured to: according to the initial pilot symbol of the target resource block and the signal
The interference value, the pilot symbol to be transmitted of the target resource block is determined, and the determining function in the foregoing step 202 and the other implicit steps of determining the pilot symbol by the transmitting end may be specifically implemented.
发送模块830,用于通过所述目标资源块,向接收端发送所述目标资源块的待发送的导频符号,具体可以实现上述步骤203中的发送功能,以及由发送端发送导频符号的其他隐含步骤。The sending module 830 is configured to send, by using the target resource block, a pilot symbol to be sent in the target resource block to the receiving end, where the sending function in the foregoing step 203 can be implemented, and the pilot symbol is sent by the sending end. Other implied steps.
可选的,所述第二确定模块820,用于:Optionally, the second determining module 820 is configured to:
在所述目标资源块的初始导频符号中减去所述信号干扰值,得到所述目标资源块的待发送的导频符号。And subtracting the signal interference value from an initial pilot symbol of the target resource block to obtain a pilot symbol to be transmitted of the target resource block.
可选的,所述装置还包括:Optionally, the device further includes:
接收模块840,用于接收所述接收端发送的多个目标资源块和多个目标资源块之间的其它资源块的信道衰落值;The receiving module 840 is configured to receive a channel fading value of the multiple resource blocks sent by the receiving end and other resource blocks between the multiple target resource blocks;
第三确定模块850,用于根据所述多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;a third determining module 850, configured to determine a channel fading value of the multiple interference resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the multiple target resource blocks;
所述第一确定模块810,还用于根据所述第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、所述第一目标资源块中的载波函数,以及所述第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值;The first determining module 810 is further configured to: according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the first target resource block, the carrier function in the first target resource block, and the a channel fading value corresponding to the plurality of interference resource blocks corresponding to the target resource block, and determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block;
所述第二确定模块820,还用于根据所述第一目标资源块的初始导频符号,和所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值,确定所述第一目标资源块的待发送的导频符号;The second determining module 820 is further configured to: according to the initial pilot symbol of the first target resource block, and the signal of the first target resource block by using multiple interference resource blocks corresponding to the first target resource block And determining, by the interference value, a pilot symbol to be sent of the first target resource block;
所述发送模块830,还用于通过所述第一目标资源块,向所述接收端发送所述第一目标资源块的待发送的导频符号。The sending module 830 is further configured to send, by using the first target resource block, a pilot symbol to be sent of the first target resource block to the receiving end.
相关细节可结合图2所述的方法实施例。Related details can be combined with the method embodiments described in FIG.
需要说明的是,上述第一确定模块810、第二确定模块820、第三确定模块850可以由处理器110实现,发送模块830、接收模块840可以由收发器120来实现,或者,结合处理器110来实现。It should be noted that the foregoing first determining module 810, the second determining module 820, and the third determining module 850 may be implemented by the processor 110, and the sending module 830 and the receiving module 840 may be implemented by the transceiver 120, or combined with the processor. 110 to achieve.
本公开实施例中,发送端根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及目标资源块中的载波函数,确定目标资源块对应的多个干扰资源块对目标资源块的信号干扰值;发送端根据目标资源块的初始导频符号和信号干扰值,确定目标资源块的待发送的导频符号;发送端通过目标资源
块,向接收端发送目标资源块的待发送的导频符号。这样,发送端可以在发送导频符号前,在导频符号中加上用于抵消信号干扰的偏置量,无需耗费其他资源块即可以达到消除信号干扰的目的,因此,发送导频符号的过程中耗费的时频资源较少。In the embodiment of the present disclosure, the transmitting end determines, according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block, the multiple interference resource blocks corresponding to the target resource block to the target resource. The signal interference value of the block; the transmitting end determines the pilot symbol to be transmitted of the target resource block according to the initial pilot symbol and the signal interference value of the target resource block; the transmitting end passes the target resource
Block, the pilot symbol to be transmitted of the target resource block is sent to the receiving end. In this way, the transmitting end can add an offset for canceling the signal interference in the pilot symbol before transmitting the pilot symbol, and the purpose of eliminating the signal interference can be achieved without using other resource blocks. Therefore, the pilot symbol is transmitted. There are fewer time-frequency resources in the process.
图9是本公开实施例提供的发送导频符号的装置的框图。该发送导频符号的装置可以通过软件、硬件或者两者的结合实现成为装置中的部分或者全部。本公开实施例提供的发送导频符号的装置可以实现本公开实施例图7所述的流程,该发送导频符号的装置包括:确定模块910、发送模块920,其中:FIG. 9 is a block diagram of an apparatus for transmitting pilot symbols according to an embodiment of the present disclosure. The means for transmitting the pilot symbols can be implemented as part or all of the device by software, hardware or a combination of both. The apparatus for transmitting a pilot symbol provided by the embodiment of the present disclosure may implement the process described in FIG. 7 of the embodiment of the present disclosure. The apparatus for transmitting a pilot symbol includes: a determining module 910, and a sending module 920, where:
确定模块910,用于获取预设的第二载波函数,确定在预设时频位置处与所述第二载波函数正交的第一载波函数,具体可以实现上述步骤701中的确定功能,以及由发送端确定第一载波函数的其他隐含步骤。The determining module 910 is configured to obtain a preset second carrier function, and determine a first carrier function that is orthogonal to the second carrier function at a preset time-frequency position, where the determining function in the foregoing step 701 is specifically implemented, and Other implicit steps of the first carrier function are determined by the transmitting end.
发送模块920,用于通过所述第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过所述第二载波函数对数据符号进行调制,向所述接收端发送调制后的数据符号,具体可以实现上述步骤702中的发送功能,以及由发送端发送导频符号的其他隐含步骤。The sending module 920 is configured to: modulate the pilot symbol by using the first carrier function, send the modulated pilot symbol to the receiving end, and modulate the data symbol by using the second carrier function, to the receiving end Transmitting the modulated data symbols may specifically implement the sending function in the above step 702, and other implicit steps of transmitting the pilot symbols by the transmitting end.
可选的,所述第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。Optionally, the spectral main lobe widths of the multiple sub-functions of the first carrier function are all less than a preset threshold.
可选的,所述确定模块910,用于:Optionally, the determining module 910 is configured to:
发送端获取预设的第二载波函数,计算为使第一载波函数和所述第二载波函数的第一公式在预设时频位置处的取值为零,所需的所述第一载波函数的每个子函数对应的加权系数;The sending end acquires a preset second carrier function, and calculates that the first carrier function and the first formula of the second carrier function have a value of zero at a preset time-frequency position, and the required first carrier a weighting coefficient corresponding to each subfunction of the function;
根据所述每个子函数对应的加权系数,确定所述第一载波函数。The first carrier function is determined according to a weighting coefficient corresponding to each of the sub-functions.
可选的,所述第一载波函数为偶函数和/或实函数。Optionally, the first carrier function is an even function and/or a real function.
相关细节可结合图7所述的方法实施例。Related details can be combined with the method embodiments described in FIG.
需要说明的是,上述确定模块910可以由处理器610实现,发送模块920可以由收发器620来实现,或者,结合处理器610来实现。It should be noted that the foregoing determining module 910 may be implemented by the processor 610, and the sending module 920 may be implemented by the transceiver 620 or implemented in conjunction with the processor 610.
本公开实施例中,发送端获取预设的第二载波函数,确定在预设时频位置处与第二载波函数正交的第一载波函数;发送端通过第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过第二载波函数对数据符号进行调制,向接收端发送调制后的数据符号。这样,发送端分别采用相互正交
的两个载波函数发送导频符号和数据符号,可以有效避免在信号传输过程中,数据符号对导频符号的信号干扰,且无需耗费其他资源块,这样,发送导频符号的过程中耗费的时频资源较少。In the embodiment of the present disclosure, the transmitting end acquires a preset second carrier function, and determines a first carrier function that is orthogonal to the second carrier function at the preset time-frequency position; and the transmitting end performs the pilot symbol by using the first carrier function. Modulation, transmitting the modulated pilot symbols to the receiving end, and modulating the data symbols by the second carrier function, and transmitting the modulated data symbols to the receiving end. In this way, the transmitting ends are orthogonal to each other.
The two carrier functions transmit pilot symbols and data symbols, which can effectively avoid signal interference of the data symbols on the pilot symbols during signal transmission, and does not need to consume other resource blocks, so that the process of transmitting the pilot symbols is expensive. Less time and frequency resources.
需要说明的是:上述实施例提供的发送导频符号的装置在发送导频符号时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的发送导频符号的装置与发送导频符号的方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。It should be noted that the apparatus for transmitting pilot symbols provided by the foregoing embodiment only uses the division of the foregoing functional modules when transmitting the pilot symbols. In actual applications, the functions may be allocated differently according to requirements. The function module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus for transmitting a pilot symbol provided by the foregoing embodiment is the same as the method for transmitting the pilot symbol. For the specific implementation process, refer to the method embodiment, and details are not described herein again.
本领域普通用户可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。A common user in the art can understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium to which it is obtained may be a read only memory, a magnetic disk or an optical disk or the like.
以上所述仅为本公开的较佳实施例,并不用以限制本公开,凡在本公开的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本公开的保护范围之内。
The above description is only the preferred embodiment of the present disclosure, and is not intended to limit the disclosure. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and principles of the present disclosure, should be included in the protection of the present disclosure. Within the scope.
Claims (21)
- 一种发送导频符号的方法,其特征在于,所述方法包括:A method for transmitting a pilot symbol, the method comprising:发送端根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及所述目标资源块中的载波函数,确定所述目标资源块对应的多个干扰资源块对所述目标资源块的信号干扰值;Determining, by the transmitting end, the multiple interference resource blocks corresponding to the target resource block to the target resource according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the target resource block, and the carrier function in the target resource block The signal interference value of the block;所述发送端根据所述目标资源块的初始导频符号和所述信号干扰值,确定所述目标资源块的待发送的导频符号;Determining, by the sending end, a pilot symbol to be sent of the target resource block according to an initial pilot symbol of the target resource block and the signal interference value;所述发送端通过所述目标资源块,向接收端发送所述目标资源块的待发送的导频符号。And sending, by the sending end, the pilot symbol to be sent of the target resource block to the receiving end by using the target resource block.
- 根据权利要求1所述的方法,其特征在于,所述发送端根据所述目标资源块的初始导频符号和所述信号干扰值,确定所述目标资源块的待发送的导频符号,包括:The method according to claim 1, wherein the transmitting end determines, according to an initial pilot symbol of the target resource block and the signal interference value, a pilot symbol to be transmitted of the target resource block, including :所述发送端在所述目标资源块的初始导频符号中减去所述信号干扰值,得到所述目标资源块的待发送的导频符号。The transmitting end subtracts the signal interference value from the initial pilot symbol of the target resource block to obtain a pilot symbol to be transmitted of the target resource block.
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:The method of claim 1 further comprising:所述发送端接收所述接收端发送的多个目标资源块的信道衰落值;Receiving, by the sending end, a channel fading value of the plurality of target resource blocks sent by the receiving end;所述发送端根据所述多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;Determining, by the transmitting end, a channel fading value of the multiple interference resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the multiple target resource blocks;所述发送端根据所述第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、所述第一目标资源块中的载波函数,以及所述第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值;Transmitting, according to the data symbol and carrier function in the multiple interference resource blocks corresponding to the first target resource block, a carrier function in the first target resource block, and a corresponding one of the first target resource blocks a channel fading value corresponding to the interference resource block, and determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block;所述发送端根据所述第一目标资源块的初始导频符号,和所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值,确定所述第一目标资源块的待发送的导频符号;Determining, by the sending end, the signal interference value of the first target resource block according to an initial pilot symbol of the first target resource block and a plurality of interference resource blocks corresponding to the first target resource block a pilot symbol to be transmitted of a target resource block;所述发送端通过所述第一目标资源块,向所述接收端发送所述第一目标资源块的待发送的导频符号。Transmitting, by the sending end, the pilot symbol to be sent of the first target resource block to the receiving end by using the first target resource block.
- 一种发送导频符号的方法,其特征在于,所述方法包括: A method for transmitting a pilot symbol, the method comprising:发送端获取预设的第二载波函数,确定在预设时频位置处与所述第二载波函数正交的第一载波函数;The transmitting end acquires a preset second carrier function, and determines a first carrier function orthogonal to the second carrier function at the preset time-frequency position;所述发送端通过所述第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过所述第二载波函数对数据符号进行调制,向所述接收端发送调制后的数据符号。Transmitting, by the first carrier function, a pilot symbol, transmitting a modulated pilot symbol to a receiving end, and modulating the data symbol by using the second carrier function, and transmitting modulation to the receiving end After the data symbol.
- 根据权利要求4所述的方法,其特征在于,所述第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。The method according to claim 4, wherein the spectral main lobe widths of the plurality of sub-functions of the first carrier function are each less than a preset threshold.
- 根据权利要求5所述的方法,其特征在于,所述发送端获取预设的第二载波函数,确定在预设时频位置处与所述第二载波函数正交的第一载波函数,包括:The method according to claim 5, wherein the transmitting end acquires a preset second carrier function, and determines a first carrier function orthogonal to the second carrier function at a preset time-frequency position, including :发送端获取预设的第二载波函数,计算为使第一载波函数和所述第二载波函数的第一公式在预设时频位置处的取值为零,所需的所述第一载波函数的每个子函数对应的加权系数,其中,所述第一公式为预设的、用于反应所述第二载波函数和在时频域移位后的第一载波函数的相关性的公式;The sending end acquires a preset second carrier function, and calculates that the first carrier function and the first formula of the second carrier function have a value of zero at a preset time-frequency position, and the required first carrier a weighting coefficient corresponding to each sub-function of the function, wherein the first formula is a preset formula for reacting the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain;根据所述每个子函数对应的加权系数,确定所述第一载波函数。The first carrier function is determined according to a weighting coefficient corresponding to each of the sub-functions.
- 根据权利要求4所述的方法,其特征在于,所述第一载波函数为偶函数和/或实函数。The method of claim 4 wherein the first carrier function is an even function and/or a real function.
- 一种发送端,其特征在于,所述发送端包括处理器、收发器,其中:A transmitting end, wherein the transmitting end comprises a processor and a transceiver, wherein:所述处理器,用于根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及所述目标资源块中的载波函数,确定所述目标资源块对应的多个干扰资源块对所述目标资源块的信号干扰值;The processor is configured to determine, according to a data symbol and a carrier function in the multiple interference resource blocks corresponding to the target resource block, and a carrier function in the target resource block, multiple interference resource blocks corresponding to the target resource block a signal interference value for the target resource block;所述处理器,用于根据所述存储器中所述目标资源块的初始导频符号和所述信号干扰值,确定所述目标资源块的待发送的导频符号;The processor is configured to determine, according to an initial pilot symbol of the target resource block in the memory, and the signal interference value, a pilot symbol to be sent of the target resource block;所述收发器,用于通过所述目标资源块,向接收端发送所述目标资源块的待发送的导频符号。The transceiver is configured to send, by using the target resource block, a pilot symbol to be sent of the target resource block to a receiving end.
- 根据权利要求8所述的发送端,其特征在于,所述处理器,具体用于:The transmitting end according to claim 8, wherein the processor is specifically configured to:在所述目标资源块的初始导频符号中减去所述信号干扰值,得到所述目标资源块的待发送的导频符号。And subtracting the signal interference value from an initial pilot symbol of the target resource block to obtain a pilot symbol to be transmitted of the target resource block.
- 根据权利要求8所述的发送端,其特征在于,所述收发器,还用于所 述发送端接收所述接收端发送的多个目标资源块的信道衰落值;The transmitting end according to claim 8, wherein said transceiver is further used for The transmitting end receives a channel fading value of the plurality of target resource blocks sent by the receiving end;所述处理器,还用于:The processor is further configured to:根据所述多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;Determining, according to channel fading values of the plurality of target resource blocks, channel fading values of the plurality of interference resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol;根据所述第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、所述第一目标资源块中的载波函数,以及所述第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值;And a data function and a carrier function in the plurality of interference resource blocks corresponding to the first target resource block, a carrier function in the first target resource block, and multiple interference resource blocks corresponding to the first target resource block Determining, by the corresponding channel fading value, a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block;根据所述第一目标资源块的初始导频符号,和所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值,确定所述第一目标资源块的待发送的导频符号;Determining the first target resource block according to an initial pilot symbol of the first target resource block, and a signal interference value of the first target resource block by a plurality of interference resource blocks corresponding to the first target resource block Pilot symbols to be transmitted;所述收发器,还用于通过所述第一目标资源块,向所述接收端发送所述第一目标资源块的待发送的导频符号。The transceiver is further configured to send, by using the first target resource block, a pilot symbol to be sent of the first target resource block to the receiving end.
- 一种发送端,其特征在于,所述发送端包括处理器、收发器,其中:A transmitting end, wherein the transmitting end comprises a processor and a transceiver, wherein:所述处理器,用于获取预设的第二载波函数,确定在预设时频位置处与所述第二载波函数正交的第一载波函数;The processor is configured to acquire a preset second carrier function, and determine a first carrier function that is orthogonal to the second carrier function at a preset time-frequency position;所述收发器,用于通过所述第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过所述第二载波函数对数据符号进行调制,向所述接收端发送调制后的数据符号。The transceiver is configured to modulate a pilot symbol by using the first carrier function, send a modulated pilot symbol to a receiving end, and modulate the data symbol by using the second carrier function, to receive the The terminal transmits the modulated data symbol.
- 根据权利要求11所述的发送端,其特征在于,所述第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。The transmitting end according to claim 11, wherein the spectral main lobe widths of the plurality of sub-functions of the first carrier function are all smaller than a preset threshold.
- 根据权利要求12所述的发送端,其特征在于,所述处理器,具体用于:The transmitting end according to claim 12, wherein the processor is specifically configured to:获取预设的第二载波函数,计算为使第一载波函数和所述第二载波函数的第一公式在预设时频位置处的取值为零,所需的所述第一载波函数的每个子函数对应的加权系数,其中,所述第一公式为预设的、用于反应所述第二载波函数和在时频域移位后的第一载波函数的相关性的公式;Obtaining a preset second carrier function, calculating that the first formula of the first carrier function and the second carrier function has a value of zero at a preset time-frequency position, and the required first carrier function is a weighting coefficient corresponding to each sub-function, wherein the first formula is a preset formula for reacting the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain;根据所述每个子函数对应的加权系数,确定所述第一载波函数。The first carrier function is determined according to a weighting coefficient corresponding to each of the sub-functions.
- 根据权利要求11所述的发送端,其特征在于,所述第一载波函数为偶函数和/或实函数。 The transmitting end according to claim 11, wherein said first carrier function is an even function and/or a real function.
- 一种发送导频符号的装置,其特征在于,所述装置包括:A device for transmitting pilot symbols, characterized in that the device comprises:第一确定模块,用于根据目标资源块对应的多个干扰资源块中的数据符号和载波函数,以及所述目标资源块中的载波函数,确定所述目标资源块对应的多个干扰资源块对所述目标资源块的信号干扰值;a first determining module, configured to determine, according to a data symbol and a carrier function in the multiple interference resource blocks corresponding to the target resource block, and a carrier function in the target resource block, multiple interference resource blocks corresponding to the target resource block a signal interference value for the target resource block;第二确定模块,用于根据所述目标资源块的初始导频符号和所述信号干扰值,确定所述目标资源块的待发送的导频符号;a second determining module, configured to determine, according to an initial pilot symbol of the target resource block and the signal interference value, a pilot symbol to be sent of the target resource block;发送模块,用于通过所述目标资源块,向接收端发送所述目标资源块的待发送的导频符号。And a sending module, configured to send, by using the target resource block, a pilot symbol to be sent of the target resource block to the receiving end.
- 根据权利要求15所述的装置,其特征在于,所述第二确定模块,用于:The device according to claim 15, wherein the second determining module is configured to:在所述目标资源块的初始导频符号中减去所述信号干扰值,得到所述目标资源块的待发送的导频符号。And subtracting the signal interference value from an initial pilot symbol of the target resource block to obtain a pilot symbol to be transmitted of the target resource block.
- 根据权利要求15所述的装置,其特征在于,所述装置还包括:The device according to claim 15, wherein the device further comprises:接收模块,用于接收所述接收端发送的多个目标资源块和多个目标资源块之间的其它资源块的信道衰落值;a receiving module, configured to receive a channel fading value of the multiple resource blocks sent by the receiving end and other resource blocks between the multiple target resource blocks;第三确定模块,用于根据所述多个目标资源块的信道衰落值,确定待发送导频符号的第一目标资源块对应的多个干扰资源块的信道衰落值;a third determining module, configured to determine a channel fading value of the multiple interference resource blocks corresponding to the first target resource block of the to-be-transmitted pilot symbol according to the channel fading value of the multiple target resource blocks;所述第一确定模块,还用于根据所述第一目标资源块对应的多个干扰资源块中的数据符号和载波函数、所述第一目标资源块中的载波函数,以及所述第一目标资源块对应的多个干扰资源块对应的信道衰落值,确定所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值;The first determining module is further configured to: according to the data symbol and the carrier function in the multiple interference resource blocks corresponding to the first target resource block, the carrier function in the first target resource block, and the first a channel fading value corresponding to the plurality of interference resource blocks corresponding to the target resource block, and determining a signal interference value of the plurality of interference resource blocks corresponding to the first target resource block to the first target resource block;所述第二确定模块,还用于根据所述第一目标资源块的初始导频符号,和所述第一目标资源块对应的多个干扰资源块对所述第一目标资源块的信号干扰值,确定所述第一目标资源块的待发送的导频符号;The second determining module is further configured to: according to an initial pilot symbol of the first target resource block, and a signal interference of the multiple target resource blocks corresponding to the first target resource block to the first target resource block a value, determining a pilot symbol to be transmitted of the first target resource block;所述发送模块,还用于通过所述第一目标资源块,向所述接收端发送所述第一目标资源块的待发送的导频符号。The sending module is further configured to send, by using the first target resource block, a pilot symbol to be sent of the first target resource block to the receiving end.
- 一种发送导频符号的装置,其特征在于,所述装置包括:A device for transmitting pilot symbols, characterized in that the device comprises:确定模块,用于获取预设的第二载波函数,确定在预设时频位置处与所述第二载波函数正交的第一载波函数; a determining module, configured to acquire a preset second carrier function, and determine a first carrier function orthogonal to the second carrier function at a preset time-frequency position;发送模块,用于通过所述第一载波函数对导频符号进行调制,向接收端发送调制后的导频符号,并通过所述第二载波函数对数据符号进行调制,向所述接收端发送调制后的数据符号。a sending module, configured to modulate a pilot symbol by using the first carrier function, send a modulated pilot symbol to a receiving end, and modulate the data symbol by using the second carrier function, and send the data symbol to the receiving end The modulated data symbol.
- 根据权利要求18所述的装置,其特征在于,所述第一载波函数的多个子函数的频谱主瓣宽度均小于预设阈值。The apparatus according to claim 18, wherein the spectral main lobe widths of the plurality of sub-functions of the first carrier function are each less than a preset threshold.
- 根据权利要求19所述的装置,其特征在于,所述确定模块,用于:The device according to claim 19, wherein the determining module is configured to:发送端获取预设的第二载波函数,计算为使第一载波函数和所述第二载波函数的第一公式在预设时频位置处的取值为零,所需的所述第一载波函数的每个子函数对应的加权系数,其中,所述第一公式为预设的、用于反应所述第二载波函数和在时频域移位后的第一载波函数的相关性的公式;The sending end acquires a preset second carrier function, and calculates that the first carrier function and the first formula of the second carrier function have a value of zero at a preset time-frequency position, and the required first carrier a weighting coefficient corresponding to each sub-function of the function, wherein the first formula is a preset formula for reacting the correlation between the second carrier function and the first carrier function after shifting in the time-frequency domain;根据所述每个子函数对应的加权系数,确定所述第一载波函数。The first carrier function is determined according to a weighting coefficient corresponding to each of the sub-functions.
- 根据权利要求20所述的装置,其特征在于,所述第一载波函数为偶函数和/或实函数。 The apparatus of claim 20 wherein said first carrier function is an even function and/or a real function.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005101774A1 (en) * | 2004-04-16 | 2005-10-27 | Matsushita Electric Industrial Co., Ltd. | Communication apparatus and communication method for a digital wavelet multicarrier transmission system |
CN1848835A (en) * | 2005-04-11 | 2006-10-18 | 华为技术有限公司 | Method for transmitting signal of offset orthogonal amplitude modulation system |
CN103209067A (en) * | 2013-04-15 | 2013-07-17 | 深圳市力合微电子有限公司 | Power line OFDM (Orthogonal Frequency Division Multiplexing) pilot symbol generation method and device |
CN105471795A (en) * | 2015-11-18 | 2016-04-06 | 中国科学院上海微系统与信息技术研究所 | Pilot frequency design and channel estimation method for offset orthogonal multicarrier system |
-
2016
- 2016-09-06 WO PCT/CN2016/098242 patent/WO2018045490A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005101774A1 (en) * | 2004-04-16 | 2005-10-27 | Matsushita Electric Industrial Co., Ltd. | Communication apparatus and communication method for a digital wavelet multicarrier transmission system |
CN1848835A (en) * | 2005-04-11 | 2006-10-18 | 华为技术有限公司 | Method for transmitting signal of offset orthogonal amplitude modulation system |
CN103209067A (en) * | 2013-04-15 | 2013-07-17 | 深圳市力合微电子有限公司 | Power line OFDM (Orthogonal Frequency Division Multiplexing) pilot symbol generation method and device |
CN105471795A (en) * | 2015-11-18 | 2016-04-06 | 中国科学院上海微系统与信息技术研究所 | Pilot frequency design and channel estimation method for offset orthogonal multicarrier system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019001374A1 (en) * | 2017-06-30 | 2019-01-03 | 索尼公司 | Electronic device and method for wireless communications |
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