CN106817331A

CN106817331A - The method and apparatus that signal of communication is processed in communication system

Info

Publication number: CN106817331A
Application number: CN201510872514.0A
Authority: CN
Inventors: 任海豹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-12-02
Filing date: 2015-12-02
Publication date: 2017-06-09
Also published as: WO2017092697A1

Abstract

The method and apparatus that the embodiment of the invention provides treatment signal of communication in a kind of communication system, the method includes：Input data is carried out into discrete Fourier transform DFT treatment, DFT data sequences are obtained；The DFT data sequences and pilot frequency sequence are carried out into OFDM in same symbol.The embodiment of the present invention can reduce peak to average power ratio during information transfer in communication system, and can reduce the transmission expense of pilot tone.

Description

The method and apparatus that signal of communication is processed in communication system

Technical field

Method the present embodiments relate to process signal of communication in the communications field, more particularly to communication system And device.

Background technology

Wide-band communication system, in order to resist due to the frequency domain Selective intensity that multipath causes, typically can will be whole Individual system bandwidth is divided into multiple sub-bands, and each sub-band may be considered flat fading, such receiver Frequency domain equalization can be carried out by simple linear frequency domain equalization device, and reach receptivity higher. Broadband signal is divided into multiple narrow band signals are transmitted and the system that receives is referred to as overloading in frequency domain Wave system is united.OFDM (Orthogonal Frequency Division Multiple Access, letter Referred to as " OFDMA ") system is a kind of typical multicarrier system.Although multicarrier system reduction connects Receipts machine carries out complexity in a balanced way, but it has a critical defect, i.e.,：Peak to average power higher Than (Peak to Average Power Ratio, referred to as " PAPR ").PAPR can have a strong impact on power amplifier Efficiency, when PAPR is low, it is ensured that amplify interval, power amplifier in optimal all the time in the operating point of power amplifier Efficiency is also optimal；When PAPR is high, in order to ensure that peak signal can normally be amplified, it is necessary to will The operating point of power amplifier is retracted, that is, reduce the operating point of power amplifier, so can also reduce the efficiency of power amplifier, And causing the mean power of sending signal reduces, so as to reduce the transmission range of wireless signal.

In Next-Generation Wireless Communication Systems, because the frequency spectrum resource of low-frequency range has been depleted substantially, wirelessly System may use the wireless frequency spectrum of higher frequency point.It is big that the use of high frequency can make wireless channel decline, in order to There is provided signal covering quality, it is desirable in transmission signal, it is necessary to consider the PAPR of transmission signal, to carry Rise transmission signal quality.

The content of the invention

A kind of method and apparatus the invention provides signal of communication is processed in communication system, can solve the problem that logical Peak to average power ratio in letter system during transmission information problem high.

First aspect, there is provided a kind of method that signal of communication is processed in communication system, methods described includes： Input data is carried out into discrete Fourier transform (Discrete Fourier Transform, referred to as " DFT ") Treatment, obtains DFT data sequences；By the DFT data sequences and pilot frequency sequence in same symbol Inside carry out OFDM.

The method that signal of communication is processed in communication system according to embodiments of the present invention, will carry out direct computation of DFT Data sequence after leaf transformation treatment carries out OFDM, energy with pilot frequency sequence in same symbol Peak to average power ratio when enough solving the problems, such as transmission information in communication system is high, and can reduce the hair of pilot tone Send expense.

It is described by the DFT data with reference in a first aspect, in a kind of implementation of first aspect Sequence carries out OFDM with pilot frequency sequence in same symbol, including：By the pilot frequency sequence Mode according to distributed mapping is mapped on K subcarrier in M subcarrier in the symbol, K is the positive integer less than or equal to M-N, and M is the number of the effective subcarrier in the symbol, N It is the points of DFT treatment；The DFT data sequences are mapped to M son in the symbol In carrier wave on N number of subcarrier different from the K subcarrier.

It is described in another implementation of first aspect with reference to first aspect and its above-mentioned implementation With the K subcarrier in the M subcarrier that the DFT data sequences are mapped in the symbol On different N number of subcarriers, including：It is mapped to after the DFT data sequences are carried out into phase place On N number of subcarrier, wherein, the phase rotation coefficient of the phase place isS is carried for son The numbering of ripple, T is inverse fast Fourier transform (the Inverse Fast Fourier in the communication system Transform, referred to as " IFFT ") points.

It is described in another implementation of first aspect with reference to first aspect and its above-mentioned implementation Method also includes：Sampled point displacement configured information is sent, the sampled point displacement configured information indicates described DFT data have carried out phase place treatment.

It is described in another implementation of first aspect with reference to first aspect and its above-mentioned implementation In the M subcarrier that the pilot frequency sequence is mapped in the symbol according to distributed mapping mode On K subcarrier, including：The pilot frequency sequence is mapped to a son load according to every L subcarrier Mode on ripple, is mapped on the K subcarrier, and L is the positive integer more than or equal to 1.

With reference to first aspect and its above-mentioned implementation, in another implementation of first aspect, N's Value is M/2.

Second aspect, there is provided a kind of method that signal of communication is processed in communication system, including：To receive Signal is converted into frequency-region signal, and the reception signal includes discrete Fourier transform (Discrete Fourier Transform, referred to as " DFT ") data sequence and pilot frequency sequence, the DFT data sequences be through The data sequence crossed after DFT treatment, the DFT data sequences and the pilot frequency sequence are in same symbol OFDM in number；According to the pilot frequency sequence, channel-estimation information is determined；According to the channel Estimated information, treatment is demodulated to the DFT data sequences.

With reference to second aspect, in a kind of implementation of second aspect, the DFT data sequences and Pilot frequency sequence OFDM in same symbol, including：The pilot frequency sequence is according to distribution The mode of formula mapping is mapped on K subcarrier in M subcarrier in the symbol, and K is small In or equal to M-N positive integer, M is the number of the effective subcarrier in the symbol, and N is described The points of DFT treatment；The DFT data sequences be mapped in M subcarrier in the symbol with On the different N number of subcarrier of the K subcarrier.

It is described in another implementation of second aspect with reference to second aspect and its above-mentioned implementation DFT data sequences are mapped in different from the K subcarrier in M subcarrier in the symbol On N number of subcarrier, including：The DFT data sequences be mapped to after phase place described N number of On subcarrier, wherein, the phase rotation coefficient of the phase place isWherein, S is subcarrier Numbering, T is inverse fast Fourier transform (the Inverse Fast Fourier in the communication system Transform, referred to as " IFFT ") or inverse discrete Fourier transform (Inverse Discrete Fourier Transform, referred to as " IDFT ") points.

It is wherein, described the DFT data sequences are demodulated according to the channel-estimation information, Including：

According to the channel-estimation information, the DFT data sequences are carried out into frequency domain equalization treatment and is obtained Frequency domain equalization data sequence；The data sequence after phase compensation will be carried out to the frequency domain equalization data sequence Carry out leaf inverse transformation IDFT in N point discrete Fouriers and obtain IDFT data sequences, wherein, the phase is mended The phase compensating factor repaid isThe IDFT data sequences are demodulated.

With reference to second aspect and its above-mentioned implementation, in another implementation of second aspect, institute Stating method also includes：Sampled point displacement configured information is received, the sampled point displacement configured information indicates institute Stating DFT data sequences has carried out phase place treatment.

It is described in another implementation of second aspect with reference to second aspect and its above-mentioned implementation K in the M subcarrier that pilot frequency sequence is mapped in the symbol according to the mode of distributed mapping On subcarrier, including：The pilot frequency sequence is mapped on a subcarrier according to every L subcarrier Mode, is mapped on the K subcarrier, and L is the positive integer more than or equal to 1.

With reference to second aspect and its above-mentioned implementation, in another implementation of second aspect, N Value be M/2.

The third aspect, there is provided a kind of method that signal of communication is processed in communication system, including：By first Data carry out leaf transformation in N point discrete Fouriers (Discrete Fourier Transform, referred to as " DFT ") Treatment, obtains a DFT data sequences, and first data are corresponding with first group of user equipment, Wherein, N is less than M, and M is the number of effective subcarrier that includes of system bandwidth of the communication system, M is the positive integer more than 1；Second data are carried out into K point DFT treatment, the 2nd DFT data are obtained Sequence, second data are corresponding with second group of user equipment, and K is less than or equal to M-N；Will be described First DFT data sequences carry out orthogonal frequency with the 2nd DFT data sequences in same symbol Multiplexing.

The method that signal of communication is processed in communication system according to embodiments of the present invention, by two groups of user equipmenies Data carry out independent discrete Fourier transform treatment and subcarrier maps, it is ensured that two groups of users independently enter Row transmission, thus, what every group of user can be independent carries out multiple-input and multiple-output treatment, obtains diversity, multiple With, array gain, and peak to average power ratio when can reduce transmission information in communication system.

It is described by a DFT in a kind of implementation of the third aspect with reference to the third aspect Data sequence carries out OFDM with the 2nd DFT data sequences in same symbol, bag Include：The first DFT data sequences are mapped in the symbol according to the mode of distributed mapping On N number of subcarrier in M subcarrier；The 2nd DFT data sequences are mapped to the symbol On K subcarrier in other subcarriers in M interior subcarrier in addition to N number of subcarrier.

It is described in another implementation of the third aspect with reference to the third aspect and its above-mentioned implementation N number of son is removed in the M subcarrier that the 2nd DFT data sequences are mapped in the symbol On K subcarrier in other subcarriers outside carrier wave, including：By the 2nd DFT data sequences Row be mapped to after phase place in M subcarrier in the symbol remove N number of subcarrier it On K subcarrier in other outer subcarriers；Wherein, the phase rotation coefficient of the phase place isS is the numbering of subcarrier, and T is the inverse fast Fourier transform (Inverse in the communication system Fast Fourier Transform, referred to as " IFFT ") points.

It is described in another implementation of the third aspect with reference to the third aspect and its above-mentioned implementation Method also includes：Sampled point displacement configured information is sent, the sampled point displacement configured information indicates described 2nd DFT data sequences have carried out phase place treatment.

It is described in another implementation of the third aspect with reference to the third aspect and its above-mentioned implementation The first DFT data sequences are mapped to M in the symbol according to the mode of distributed mapping On N number of subcarrier in subcarrier, including：By a DFT data sequences according to every L Mode in subcarrier maps a to subcarrier, is mapped on N number of subcarrier, L be more than or Positive integer equal to 1.

It is described in another implementation of the third aspect with reference to the third aspect and its above-mentioned implementation Sampled point displacement configured information is sent, including：Send physical downlink control channel PDCCH information, institute State PDCCH information and shift configured information including the sampled point.

It is described in another implementation of the third aspect with reference to the third aspect and its above-mentioned implementation PDCCH information also includes at least one in following message：Modulation and coding strategy class information, use Family device packets information, the data information the location of in DFT.

With reference to the third aspect and its above-mentioned implementation, in another implementation of the third aspect, N's Value is M/2.

Fourth aspect, there is provided a kind of method that signal of communication is processed in communication system, including：To receive Signal is converted to frequency-region signal, and the reception signal includes discrete Fourier transform (Discrete Fourier Transform, referred to as " DFT ") data sequence, the DFT data sequences include and first group of use The first corresponding data of family equipment are by the DFT data sequences after N points DFT treatment and with the The second corresponding data of two groups of user equipmenies by the 2nd DFT data sequences after K points DFT treatment, The first DFT data sequences and the 2nd DFT data sequences orthogonal frequency in same symbol Multiplexing, wherein, N is less than M, and K is less than or equal to M-N, and M is the system band of the communication system The number of effective subcarrier that width includes；According to channel-estimation information, the DFT data sequences are entered Row demodulation.

With reference to fourth aspect, in a kind of implementation of fourth aspect, the DFT data sequences Row and the 2nd DFT data sequences OFDM in same symbol, including：Described In the M subcarrier that one DFT data sequences are mapped in the symbol according to the mode of distributed mapping N number of subcarrier on；The 2nd DFT data sequences are mapped in M subcarrier in the symbol In on K subcarrier in other subcarriers in addition to N number of subcarrier.

With reference to fourth aspect and its above-mentioned implementation, in another implementation of fourth aspect, institute The 2nd DFT data sequences are stated to be mapped in M subcarrier in the symbol except N number of subcarrier Outside other subcarriers in K subcarrier on, including：The 2nd DFT data sequences are carried out It is mapped to after phase place on N number of subcarrier, wherein, the phase rotation coefficient of the phase place ForWherein, S is the numbering of subcarrier, and T is the discrete fourier inversion in the communication system Change (Inverse Discrete Fourier Transform, referred to as " IDFT ") points or fast Fourier Inverse transformation (Inverse Fast Fourier Transform, referred to as " IFFT ") is counted.

Wherein, it is described the DFT data sequences are demodulated according to channel-estimation information, including：

According to the channel-estimation information, the 2nd DFT data sequences are carried out into frequency domain equalization treatment Frequency domain equalization data sequence is obtained, the data after phase compensation will be carried out to the frequency domain equalization data sequence Sequence carries out leaf inverse transformation IDFT in K point discrete Fouriers and obtains IDFT data sequences, wherein, the phase Position compensation phase compensating factor beThe IDFT data sequences are demodulated.

It is described in another implementation of fourth aspect with reference to fourth aspect and its above-mentioned implementation Method also includes：Sampled point displacement configured information is received, the sampled point displacement configured information indicates described 2nd DFT data sequences have carried out phase place treatment.

It is described in another implementation of fourth aspect with reference to fourth aspect and its above-mentioned implementation First DFT data sequences are mapped to M subcarrier in the symbol according to the mode of distributed mapping In N number of subcarrier on, including：The first DFT data sequences are reflected according to every L subcarrier The mode on a subcarrier is mapped to, is mapped on N number of subcarrier, L is more than or equal to 1 Positive integer.

It is described in another implementation of fourth aspect with reference to fourth aspect and its above-mentioned implementation Sampled point displacement configured information is received, including：Receive physical downlink control channel PDCCH information, institute State PDCCH information and shift configured information including the sampled point.

It is described in another implementation of fourth aspect with reference to fourth aspect and its above-mentioned implementation PDCCH information also includes at least one in following message：Modulation and coding strategy class information, use Family device packets information, positional information of the data described in DFT.

With reference to fourth aspect and its above-mentioned implementation, in another implementation of fourth aspect, N's Value is M/2.

A kind of 5th aspect, there is provided device, including：Processor and memory, the processor and institute State memory to be connected by bus system, the memory is used for store instruction, the processor is used to hold The instruction of the capable memory storage so that described device performs any of above-mentioned first aspect or first aspect Method in possible implementation.

A kind of 6th aspect, there is provided device, including：Processor, memory and receiver, the place Reason device, the memory are connected with the receiver by bus system, and the memory refers to for storage Order, the processor is used to perform the instruction of the memory storage, to control the receiver to receive signal, So that described device performs the side in any possible implementation of above-mentioned second aspect or second aspect Method.

A kind of 7th aspect, there is provided device, including：Processor and memory, the processor and institute State memory to be connected by bus system, the memory is used for store instruction, the processor is used to hold The instruction of the capable memory storage so that described device performs any of the above-mentioned third aspect or the third aspect Method in possible implementation.

A kind of eighth aspect, there is provided device, including：Including：Processor, memory and receiver, The processor, the memory are connected with the receiver by bus system, and the memory is used for Store instruction, the processor is used to perform the instruction of the memory storage, to control the receiver to connect The collection of letters number so that described device performs any possible implementation of above-mentioned fourth aspect or fourth aspect In method.

A kind of 9th aspect, there is provided computer-readable medium, for storing computer program, the calculating Machine program includes being used to perform the method in any possible implementation of first aspect or first aspect Instruction.

A kind of tenth aspect, there is provided computer-readable medium, for storing computer program, the calculating Machine program includes being used to perform the method in any possible implementation of second aspect or second aspect Instruction.

Tenth on the one hand, there is provided a kind of computer-readable medium, for storing computer program, the meter Calculation machine program includes being used to perform the side in any possible implementation of the third aspect or the third aspect The instruction of method.

A kind of 12nd aspect, there is provided computer-readable medium, for storing computer program, the meter Calculation machine program includes being used to perform the side in any possible implementation of fourth aspect or fourth aspect The instruction of method.

Brief description of the drawings

Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to embodiment or existing skill The accompanying drawing to be used needed for art description is briefly described, it should be apparent that, drawings in the following description Only some embodiments of the present invention, for those of ordinary skill in the art, are not paying creation Property it is laborious on the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic diagram of the application scenarios of the embodiment of the present invention；

Fig. 2 is the signal of the internal structure of base station in the application scenarios described in Fig. 1 and user equipment Figure；

Fig. 3 is the schematic stream of the method for the treatment of signal of communication in communication system according to embodiments of the present invention Cheng Tu；

Fig. 4 be a specific embodiment of the invention communication system in process the method for signal of communication and show Meaning property flow chart；

Fig. 5 is the signal of the method for the treatment of signal of communication in communication system according to another embodiment of the present invention Property flow chart；

Fig. 6 is the schematic flow of the method for the treatment signal of communication of another specific embodiment of the invention Figure；

Fig. 7 is the schematic block diagram of device according to embodiments of the present invention；

Fig. 8 is the schematic block diagram of device according to another embodiment of the present invention；

Fig. 9 is the schematic block diagram of device according to yet another embodiment of the invention；

Figure 10 is the schematic block diagram of device according to yet another embodiment of the invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment is a part of embodiment of the invention, rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not paying wound The every other embodiment that the property made is obtained on the premise of working, belongs to the scope of protection of the invention.

It should be understood that the technical scheme of the embodiment of the present invention can apply to various suitable communication systems, example Such as：Long Term Evolution (Long Term Evolution, referred to as " LTE ") system, LTE FDDs (Frequency Division Duplex, referred to as " FDD ") system, LTE time division duplexs (Time Division Duplex, referred to as " TDD ") or future network, such as 5G, D2D (Device to Device) System, M2M (Machine to Machine) system etc..

It should be understood that in embodiments of the present invention, user equipment (User Equipment, referred to as " UE ") Also referred to as terminal device (Terminal Equipment), mobile station (Mobile Station, referred to as Be " MS "), mobile terminal (Mobile Terminal) etc., the user equipment can be through wireless access network (Radio Access Network, referred to as " RAN ") is communicated with one or more core nets, For example, user equipment can be mobile phone (or being " honeycomb " phone), with mobile terminal Computer etc., for example, it may be portable, pocket, hand-held, built-in computer or it is vehicle-mounted Mobile device, and terminal device in future 5G networks or following evolution public land movement Terminal device in network (Public Land Mobile Network, referred to as " PLMN ") etc..

It should also be understood that in embodiments of the present invention, base station, can be LTE system wireless access network in Evolved base station (evolved Node B, referred to as " eNB " or " e-NodeB "), it is or following logical Base station in the wireless access network of letter system, the present invention is to this and is not construed as limiting.

Fig. 1 is a kind of schematic diagram of application scenarios of the embodiment of the present invention.As shown in figure 1, base station with it is many Individual user equipment (UE1~UE3) is communicated by wireless signal.It is generally used for the wireless communication of communication Number it is transmitted and is received with certain modulation system, single-carrier modulated and multi-carrier modulation can be divided into Two major classes.

It should be noted that illustrate only one in application scenarios shown in Fig. 1 has a base station (isolated base station) Situation.But the present invention is not limited thereto, base station can also have in identical or different running time-frequency resource upload The neighbor base stations and user equipment of defeated business, can also include other quantity in the coverage of each base station User equipment.

Alternatively, base station and the wireless communication system where user equipment can also include network control in Fig. 1 Other network entities such as device processed, mobile management entity, embodiment of the present invention not limited to this.

Fig. 2 is the base station in the application scenarios shown in Fig. 1 and the schematic diagram of the internal structure of user equipment. As shown in Fig. 2 base station can include antenna or aerial array, duplexer, emitter (Transmitter, Referred to as " TX "), (TX and RX may be collectively referred to as receiver (Receiver, referred to as " RX ") Transceiver TRX) and baseband processing portion.Wherein, duplexer is used to make antenna or aerial array reality Now both it is used for sending signal, and for receiving signal.TX be used to realizing radiofrequency signal and baseband signal it Between conversion, usual TX can include power amplifier (Power Amplifier, referred to as " PA "), Digital analog converter (Digital to Analog Converter, referred to as " DAC ") and frequency converter, PA mono- As be operated in certain range of linearity, when input signal amplitude conversion it is too big when, PA works can be caused Between accomplishing inelastic region, the efficiency of PA is reduced, usual RX can include LNA (Low-Noise Amplifier, referred to as " LNA "), analog-digital converter (Analog to Digital Converter, referred to as It is " ADC ") and frequency converter.Baseband processing portion is used to realize the treatment of signal that is transmitted or receiving, Such as layer mapping, precoding, modulating/demodulating, coding/compiling etc., and for physical control channel, The treatment that physical data channel, Physical Broadcast Channel, reference signal etc. are distinguished.

In one example, base station can also include control section, for carrying out multi-subscriber dispatching and resource Distribution, pilot tone scheduling, the configuration of user's physical layer parameter etc..

UE can include that (TX and RX may be collectively referred to as transceiver for antenna, duplexer, TX and RX ), and baseband processing portion TRX.As shown in Fig. 2 UE has single antenna.It should be understood that UE There can be multiple antennas (i.e. aerial array).Wherein, duplexer makes antenna or aerial array realize both using In sending signal, and for receiving signal.TX is used to realize turning between radiofrequency signal and baseband signal Change, usual TX can include PA, DAC and frequency converter, and UE sides are due to being that battery is powered, and its is right The power amplification efficiency of PA is more sensitive, and usual RX can include LNA, ADC and frequency converter.At base band Reason part is used to realize the treatment of signal that is transmitted or receiving, such as, layer mapping, precoding, modulation / demodulation, coding/decoding etc..And believe for physical control channel, physical data channel, physical broadcast The treatment that road, reference signal etc. are distinguished.

In one example, UE can also include control section, by ask ascending physical signal resource, based on The corresponding channel condition information (Channel State Information, referred to as " CSI ") of calculation down channel, Judge whether downlink data packet receives successfully etc..

Put it briefly, the embodiment of the present invention can apply to the baseband processing portion of base station or user equipment.

In embodiments of the present invention：Floor functions are the operation function for rounding downwards, can use mathematic signRepresent.For example,Ceiling functions are the operation function for rounding up, Mathematic sign can be usedRepresent.For example,

Fig. 3 shows the side for the treatment of signal of communication in the communication system provided according to one embodiment of the invention Method 300, the method 300 of the treatment signal of communication can apply in the application scenarios shown in Fig. 1, but Embodiment of the present invention not limited to this.As shown in figure 3, the method 300 includes：

S310, discrete Fourier transform DFT treatment is carried out by input data, obtains DFT data sequences；

S320, orthogonal frequency division multiplexing is carried out by the DFT data sequences and pilot frequency sequence in same symbol With.

Therefore, the method that signal of communication is processed in communication system according to embodiments of the present invention, will be input into number According to carrying out orthogonal frequency division multiplexing in same symbol with pilot frequency sequence after carrying out discrete Fourier transform treatment With.Thereby, it is possible to reduce peak to average power ratio during transmission information in communication system, and pilot tone can be reduced Transmission expense.

In embodiments of the present invention, alternatively, in S310, the input data can be encoded With the user data after modulation.For example, the step S410 in method 400 shown in Fig. 4, transmitting terminal (for example, base station or user equipment) can be by encoded (for example, forward error correction coding (Forward Error Correction, referred to as " FEC ")) after user data be modulated, then carry out N (examples Such as：M/2) leaf transformation (Discrete Fourier Transform, referred to as " DFT ") in point discrete Fourier Treatment, obtains DFT data sequences.

For example, when the equipment of transmitting terminal is base station, user data can refer to Physical Downlink Control Channel The shared letter of (Physical Downlink Control Channel, referred to as " PDCCH "), physical down Road (Physical Downlink Shared Channel, referred to as " PDSCH "), physical mixed are automatic Retransmission indicating chanel (Physical Hybrid ARQ Indicator Channel, referred to as " PHICH "), When the equipment of transmitting terminal is user equipment, user data can refer to Physical Uplink Shared Channel (Physical Uplink Shared Channel, referred to as " PUSCH "), Physical Uplink Control Channel (Physical Uplink Control Channel, referred to as " PUCCH "), but the present invention is not limited thereto.

Specifically, step S320 can be：The DFT data sequences are mapped to pilot frequency sequence same In the different sub-carrier in M effective subcarrier in individual symbol, for example, in Fig. 4, by DFT numbers According on sequence mapping to M/2 subcarrier, pilot frequency sequence is mapped on other M/2 subcarrier. Wherein, effective subcarrier can be understood as can be used in sending data in the total bandwidth that communication system is supported The subcarrier that bandwidth includes, total band that communication system is supported is properly termed as " system bandwidth ", system bandwidth Can be understood as the channel width (Channel Bandwith) in existing communication standard, or following evolution Channel width used in communication system.For example, or the system bandwidth that can support of LTE system can be with There are 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz etc..

For example, above-mentioned pilot frequency sequence can be Zadoff-Chu (referred to as " ZC ") sequence, can be with It is other suitable sequences, this is not limited by the present invention.

Also, further, after transmitting terminal carries out subcarrier maps to data sequence and pilot frequency sequence, As shown in S430-S460 in Fig. 4, can be sent according to frequency domain generation signal method generation sending signal End can be in the mapped the zero padding of subcarrier two, then carry out inverse fast Fourier transform (Inverse Fast Fourier Transform, referred to as " IFFT ") or inverse discrete Fourier transform (Inverse Discrete Fourier Transform, referred to as " IDFT "), afterwards plus Cyclic Prefix or 0 prefix, It is transmitted by sending into radiofrequency emitting module after serioparallel exchange.

Corresponding, when being received, 300 inverse process is received receiving terminal according to the method described above. Specifically, receiving terminal is received by the data after receiver radio frequency treatment from Receiver Module, is carried out Serioparallel exchange, and Cyclic Prefix or zero prefix are removed, FFT is carried out afterwards, and removes subcarrier two Zero；Channel estimation is carried out using pilot portion afterwards, the channel on all running time-frequency resources is estimated, profit With the channel information for estimating, the demodulation of data division is carried out.

Alternatively, the DFT data sequences and pilot frequency sequence are being carried out into orthogonal frequency in same symbol When dividing multiplexing, the pilot frequency sequence can be mapped in the time-domain symbol according to the mode of distributed mapping On K subcarrier in the M subcarrier, K is the positive integer less than or equal to M-N, and M is should The number of the effective subcarrier in symbol, N is the points of DFT treatment；The DFT data sequences are reflected It is mapped on N number of subcarriers different from the K subcarrier in the M subcarrier in the symbol.

Specifically, the mode of distributed mapping can be the fixed subcarrier maps in interval a to subcarrier On mode mapped, or be spaced side of the unfixed subcarrier maps to a subcarrier Formula is mapped, for example, when subcarrier maps are carried out can according to be first spaced 1 subcarrier, again between Every 2 subcarriers, 1 subcarrier is spaced again, 2 modes of the circulation of subcarrier are spaced again carry out son Carrier wave maps.The mode of each subcarrier maps is properly termed as a kind of mapping pattern (mapping pattern).In the embodiment of the present invention, can use and be mapped to a side for subcarrier every L subcarrier Formula, the pilot frequency sequence is mapped on the K subcarrier, and L is the positive integer more than or equal to 1.Example Such as, the value of L can be 1.

By above-mentioned mapping, the subcarrier for carrying pilot frequency sequence constitutes one the pattern for being similar to " comb " (pattern) subcarrier for, carrying data constitutes another handle " comb ".In order to distinguish pilot frequency sequence and data Which " comb " is belonging respectively to, system can predefine pilot frequency sequence and be reflected since first subcarrier Penetrate or mapping or the mapping since other subcarriers numbered since second subcarrier；Can be with Carry out two kinds of dynamic selects of " comb " according to certain mode, for example, in two adjacent symbols or The rotation of " comb ", but this hair are carried out between person's time slot (constituting a time slot by multiple continuous symbols) It is bright to be not limited to this.

Further, in the M subcarrier that the DFT data sequences are mapped in the symbol with should When on the different N number of subcarrier of K subcarrier, the DFT data sequences can be carried out phase place After be mapped on N number of subcarrier, in other words, the DFT data sequences are carried out at sampled point displacement Reason, such as S470 in Fig. 4 carries out half sampled point shifting processing to DFT data sequences.Wherein, The phase rotation coefficient of the phase place isS is the numbering of subcarrier, and T is in the communication system Inverse fast Fourier transform IFFT point number.IFFT point number be generally minimum, more than M it is 2, 3 or 5 products or integral number power.Above-mentioned is frequency-region signal generation method.It should be understood that using The sending signal of above-mentioned frequency-region signal generation method generation is equivalent to using following time-domain signal generating mode The sending signal of generation：

Wherein l represents l-th symbol, 0≤t<(N_CP,l+T)×T_sIt is symbol duration, s_lT () is made a living Into time-domain signal, N_CP,lThe CP points in symbol l are represented, T is that the Fourier in the communication system is inverse Conversion points,Subcarrier number is represented, Δ f represents that sub-carrier frequency domain is spaced, T_sFor The system sampling clock cycle,It is symbol l, subcarrier k^(-)The information of upper modulation, can be by A data symbol after DFT transform a, or symbol of pilot tone, g (x) is logical function, Value is 0 or 1, in embodiments of the present invention, if DFT data need to carry out half sampled point shifting Simultaneously assume its modulation to subcarrier k in position^(-)On, then g (k^-) it is 1, otherwise g (k^-) it is 0.

Correspondingly, the equipment of receiving terminal is it needs to be determined that whether the DFT data sequences have carried out phase place Treatment, for example, can determine whether to have carried out phase place according to the predefined implicit instruction rule of system Treatment, it is preferable that transmitting terminal can send sampled point displacement configured information to receiving terminal, and the sampled point is moved Position configured information indicates the DFT data sequences to have carried out phase place treatment.Thus, receiving terminal is entering When row data are demodulated, signal will be received and be converted into the frequency-region signal (symbol that specifically, will can be received (including synthesis symbol of pilot tone and data composition) carries out FFT or IDFT obtains frequency-region signal), According to channel-estimation information, the DFT data sequences are carried out into frequency domain equalization treatment and obtains frequency domain equalization number According to sequence；Carried out the data after phase compensation are carried out to the frequency domain equalization data sequence in N point discrete Fouriers Leaf inverse transformation IDFT obtains IDFT data sequences, the IDFT data sequences is demodulated, is decoded, Wherein, the phase compensating factor of the phase compensation is

As an alternative embodiment, when the equipment of transmitting terminal is base station, can be sent out by receiving terminal Send physical control channel (for example：PDCCH mode), sends the sampled point and shifts to the receiving terminal Configured information, when transmitting terminal is user equipment, base station, can be by this when the user equipment is dispatched User equipment sends the mode of physical control channel, indicates the user equipment that pilot tone is carried out in single symbol During with data is activation, if carry out sampled point displacement, but the present invention is not limited thereto.

Used as an alternative embodiment, the PDCCH information also includes at least one in following message： Modulation location in DFT with coding strategy class information, user equipment grouping information, data The subcarrier information that information, pilot tone and data take.

Used as an optional embodiment, the value of N can be M/2, and the number of pilot frequency sequence can be M/2。

It should be understood that the size of the sequence number of above-mentioned each process is not meant to the priority of execution sequence, each mistake The execution sequence of journey should be determined with its function and internal logic, without the implementation of the correspondence embodiment of the present invention Journey constitutes any restriction.

Communication is processed in describing communication system according to another embodiment of the present invention in detail below in conjunction with Fig. 5 The method 500 of signal, the method 500 can be performed by base station, as shown in figure 5, the method 500 is wrapped Include：

First data are carried out leaf transformation DFT treatment in N point discrete Fouriers by S510, obtain a DFT Data sequence, first data are corresponding with first group of user equipment, wherein, N is less than M, and M is should The number of effective subcarrier that the system bandwidth of communication system includes, M is the positive integer more than 1；

Second data are carried out K point DFT treatment by S520, obtain the 2nd DFT data sequences, and this Two data are corresponding with second group of user equipment, and K is less than or equal to M-N；

S530, by a DFT data sequences and the 2nd DFT data sequences in same symbol Carry out OFDM.

Therefore, the method that signal of communication is processed in communication system according to embodiments of the present invention, by two groups of use The data of family equipment carry out independent discrete Fourier transform treatment and subcarrier maps, it is ensured that two groups of users Equipment is independently transmitted, and thus, what every group of user equipment can be independent carries out multiple-input and multiple-output treatment, Peak to average work(when obtaining diversity, multiplexing, array gain, and can reduce transmission information in communication system Rate ratio.

Specifically, at base station (Base Station, referred to as " BS ") to multiple user equipment (UE)s When sending data, the user equipment in system can be divided into two groups, first group includes n user equipment (n is the integer more than 0), second group of user equipment (m is the integer more than 0) for including m, tool Body ground, as shown in S610 in Fig. 6, the Dynamic data exchange of each user equipment in every group of user equipment enters Row FEC codings, intertexture, scrambling, modulation, the data after two groups of group internal modulations are carried out at DFT respectively Reason.Alternatively, first group of data of user equipment carries out N point DFT treatment, obtains a DFT numbers According to sequence；Second group of data of user equipment carries out K point DFT treatment, obtains the 2nd DFT data sequences Row, alternatively, the value of N and K can be M/2.

It should be understood that " first ", " second " are intended merely to differentiation be defined without the feature of description thereof, Such as, " first group of user equipment " is referred to as " second group of user equipment ", " DFT a data Sequence " can also turn into " the 2nd DFT data sequences ".

Alternatively, in S520, when K data be less than M-N when, a DFT data sequences with 2nd DFT data sequences can not take all of effective subcarrier, can now use repeating mapping The mode of the first DFT data sequences and/or the 2nd DFT data sequences avoids the waste of frequency domain resource.

Alternatively, S530 can be expressed as：By a DFT data sequences and the 2nd DFT data Sequence mapping, specifically can be such as Fig. 6 in the different sub-carrier in M subcarrier in same symbol Shown in middle S620, two groups of DFT data sequences are carried out into subcarrier maps respectively.

Specifically, as shown in S630-S660 in Fig. 6, subcarrier two that base station can be in the mapped is mended Zero, then carry out IFFT or IDFT；Cyclic Prefix or 0 prefix are added afterwards, by serioparallel exchange Feeding radio frequency sending module is transmitted afterwards.

Corresponding, when being received, 500 inverse process is connect user equipment according to the method described above Receive.Specifically, user equipment is received by the number after receiver radio frequency treatment from Receiver Module According to, serioparallel exchange is carried out, and Cyclic Prefix or 0 prefix are removed, FFT is carried out afterwards, and removes son The zero of carrier wave two, carries out channel estimation using the pilot tone in the symbol with pilot portion afterwards, estimates Go out the channel on all running time-frequency resources in the symbol, using the channel information for estimating, carry out the solution of data Adjust.

Alternatively, in S630, by a DFT data sequences and the 2nd DFT data sequences Being listed in carries out the orthogonal frequency division multiplexing used time in same symbol, by a DFT data sequences according to distribution Formula mapping mode be mapped on the N number of subcarrier in M subcarrier in the symbol, by this second DFT data sequences are mapped to other in addition to N number of subcarrier in M subcarrier in the symbol On K subcarrier in subcarrier.

Specifically, the mode of distributed mapping can be the fixed subcarrier maps in interval a to subcarrier On mode mapped, or be spaced side of the unfixed subcarrier maps to a subcarrier Formula is mapped, for example can by a DFT data sequences according to be first spaced 1 subcarrier, again between Reflected every 2 subcarriers, the mode for being spaced 1 subcarrier again, being spaced 2 circulations of subcarrier again Penetrate.The mode of each subcarrier maps is properly termed as a kind of mapping pattern (mapping pattern).This hair In bright embodiment, can by the way of a subcarrier is mapped to every L subcarrier, by this first DFT data are mapped on N number of subcarrier, and L is the positive integer more than or equal to 1.For example, L Value is 1.

Further, removed in the M subcarrier that the 2nd DFT data sequences are mapped in the symbol When on the K subcarrier in other subcarriers outside N number of subcarrier, can be by the 2nd DFT Data sequence is mapped in M subcarrier in the symbol except N number of subcarrier after carrying out phase place Outside other subcarriers in K subcarrier on, in other words, the 2nd DFT data sequences are entered Row sampled point shifting processing, such as S670 in Fig. 6 can carry out half sampled point shifting processing, its In, the phase rotation coefficient of this rotation isS is the numbering of subcarrier, and T is the communication system In inverse Fourier transform IFFT point number.IFFT point number be generally minimum, more than M it is 2,3 Or 5 integral number power.Above-mentioned is frequency-region signal generation method.Likewise it is possible to using method above Time-domain signal generation method generation described in 300 is believed with the transmission that above-mentioned frequency-region signal generation method is generated The sending signal of number equivalence, to avoid repeating, repeats no more again.Thereby, it is possible to further reduce logical Peak to average power ratio in letter system.

Correspondingly, if user equipment be in second group of user equipment, user equipment it needs to be determined that Whether the 2nd DFT data sequences have carried out phase place treatment, for example, can be predetermined according to system The implicit instruction rule of justice determines whether the 2nd DFT data sequences have carried out phase place treatment, can Selection of land, base station can send sampled point displacement configured information to user equipment, and sampled point displacement indicates letter The 2nd DFT data sequences of breath instruction have carried out phase place treatment.Thus, user equipment is being carried out , it is necessary to the signal that will be received is converted to frequency-region signal during demodulation；Afterwards according to channel-estimation information, 2nd DFT data sequences are carried out into frequency domain equalization treatment and obtains frequency domain equalization data sequence, will be to this Frequency domain equalization data sequence carries out the data sequence after phase compensation and carries out K points IDFT obtaining IDFT numbers According to sequence, wherein, the phase compensating factor of the phase compensation isThe user of user equipment interception afterwards The information symbol of equipment oneself, is demodulated, decoding process.

It is alternatively possible to the data of multiple user equipmenies are carried out into multiplexing according to method 500 forms one group of number According to again this group of data can be multiplexed with pilot frequency sequence using method 300 in same symbol.

Used as an alternative embodiment, base station can send Physical Downlink Control Channel to user equipment PDCCH information, the PDCCH information includes that the sampled point shifts configured information.

Used as an alternative embodiment, the PDCCH information also includes at least one in following message： Modulation location in DFT with coding strategy class information, user equipment grouping information, data Information.

Wherein, modulation with coding strategy grade (Modulation and Coding Scheme, referred to as " MCS ") information, the indicating means of MCS in LTE system can be multiplexed, use 5 bit tables Show 32 kinds of MCS grades.User equipment grouping information is used for the packet belonging to instruction user equipment, can be with With the packet belonging to 1 bit instruction user equipment, first group is belonged to for example, can be represented with " 1 " User equipment, " 0 " represents and belongs to second group of user equipment, can also be set come instruction user with multiple bits Packet belonging to standby.It is corresponding with user equipment that data location information in DFT is used for instruction Data are which parts of a DFT data sequences, or the 2nd DFT data sequences which portion Point, specifically, a DFT data block may include the data of multiple user equipmenies, for example, The data of user equipment 1,2,3 can be cascaded into P symbol, DFT treatment is done in unification, now, User equipment is accomplished by knowing that the symbol that its corresponding data takes is this P symbol when receiving data in Which symbol, that is, the user equipment data the location of in DFT.

Needed it is alternatively possible to be calculated according to formula (1) and carry data location information in DFT The number of bits wanted：

In formula (1), M_stepIt is the integer more than or equal to 1 for the minimum particle size that resource is indicated, base station can To be configured by broadcast or system is predefined, resource indicates to use original position R_start, even Continuous number of modulation symbols L_CRsAssociation list levies the position of the data of user equipment, and the resource of PDCCH is indicated Field (Resource Indicator Value, referred to as " RIV ") can be calculated by the following method：

IfThen

Otherwise

Wherein L_CRs>=1 and it is no more thanR_startDivide exactly M_step(such as ), L_CRsDivide exactly M_step(such as)。

Used as an optional embodiment, the value of N can be M/2, and further, the value of K Can be M/2.

It should be understood that method 500 is not necessarily limited to two groups of situations of user equipment, can also be applied to many In two groups of situations of user equipment.Now, only corresponding operating need to be carried out according to method 500.

Processed in describing communication system according to embodiments of the present invention in detail above in conjunction with Fig. 3 to Fig. 6 The method of signal of communication, below in conjunction with Fig. 7 to Figure 10, describes dress according to embodiments of the present invention in detail Put.

Fig. 7 shows device 10 according to embodiments of the present invention, and the device 10 includes：

First processing units 11, for input data to be carried out into discrete Fourier transform DFT treatment, obtain To DFT data sequences；

Second processing unit 12, is additionally operable to the DFT data sequences and pilot frequency sequence in same symbol Inside carry out OFDM.

The device of the embodiment of the present invention, by input data carry out after discrete Fourier transform treatment with pilot tone sequence Being listed in carries out OFDM in same symbol.Thereby, it is possible to reduce information transfer in communication system When peak to average power ratio, and the transmission expense of pilot tone can be reduced.

Alternatively, the DFT data sequences and pilot frequency sequence are being carried out into orthogonal frequency in same symbol Point multiplexing aspect, the first processing units 11 specifically for：By the pilot frequency sequence according to distributed mapping Mode be mapped on K subcarrier in M subcarrier in the symbol, K be less than or equal to The positive integer of M-N, M is the number of the effective subcarrier in the symbol, and N is the point of DFT treatment Number；In the M subcarrier that the DFT data sequences are mapped in the symbol with the K subcarrier not On same N number of subcarrier.

Alternatively, in the M subcarrier that the DFT data sequences are mapped in the symbol with the K On the different N number of subcarrier of individual subcarrier aspect, the first processing units 11 specifically for：By the DFT Data sequence is mapped on N number of subcarrier after carrying out phase place, wherein, the phase of the phase place Twiddle factor isS is the numbering of subcarrier, and T is the inverse Fourier transform IFFT in the communication system Points.

Alternatively, in the M pilot frequency sequence is mapped to according to distributed mapping mode in the symbol In subcarrier K subcarrier top face, the first processing units 11 specifically for：By the pilot tone sequence Arrange according to the mode being mapped to every L subcarrier on a subcarrier, be mapped to the K subcarrier On, L is the positive integer more than or equal to 1.

Alternatively, the value of N is M/2.

It should be understood that device 10 here is embodied in the form of functional unit.Here term " unit " Can refer to using peculiar integrated circuit (Application Specific Integrated Circuit, referred to as " ASIC "), electronic circuit, for perform one or more softwares or firmware program processor (for example Shared processor, proprietary processor or group processor etc.) and memory, merging logic circuit and/or other Support the suitable assembly of described function.In an optional example, those skilled in the art can manage Solution, device 10 can be used for performing each flow and/or step of method 300 in above method embodiment, To avoid repeating, will not be repeated here.

Fig. 8 shows device according to another embodiment of the present invention 20, and the device 20 includes：

First processing units 21, for the first data to be carried out into leaf transformation DFT treatment in N point discrete Fouriers, A DFT data sequences are obtained, first data are corresponding with first group of user equipment, wherein, N Less than M, M is the number of effective subcarrier that includes of system bandwidth of the communication system, and M is more than 1 Positive integer；

The first processing units 21, are additionally operable to for the second data to carry out K point DFT treatment, obtain second DFT data sequences, second data are corresponding with second group of user equipment, and K is less than or equal to M-N；

Second processing unit 22, is additionally operable to a DFT data sequences and the 2nd DFT data sequences Being listed in carries out OFDM in same symbol.

Two groups of data of user equipment are carried out independent direct computation of DFT by device according to embodiments of the present invention Leaf transformation treatment and subcarrier maps, it is ensured that two groups of user equipmenies are independently transmitted, thus, every group of use Family equipment can be independent carry out multiple-input and multiple-output treatment, obtain diversity, multiplexing, array gain, and Peak to average power ratio during transmission information in communication system can be reduced.

Alternatively, by a DFT data sequences and the 2nd DFT data sequences in same symbol Carried out in number OFDM aspect, the second processing unit 22 specifically for：By a DFT N number of son in the M subcarrier that data sequence is mapped in the symbol according to the mode of distributed mapping On carrier wave；Except this is N number of in the M subcarrier that 2nd DFT data sequences are mapped in the symbol On K subcarrier in other subcarriers outside subcarrier.

Alternatively, removed in the M subcarrier that the 2nd DFT data sequences are mapped in the symbol K subcarrier top face in other subcarriers outside N number of subcarrier, the second processing unit 22 specifically for：The M that 2nd DFT data sequences be mapped to after phase place in the symbol On K subcarrier in other subcarriers in individual subcarrier in addition to N number of subcarrier；

Wherein, the phase rotation coefficient of the phase place isS is the numbering of subcarrier, and T is logical for this Inverse fast Fourier transform IFFT point number in letter system.

Alternatively, a DFT data sequences are being mapped to the symbol according to the mode of distributed mapping On the N number of subcarrier in M subcarrier in number aspect, the second processing unit 22 specifically for： By a DFT data sequences according to the mode being mapped to every L subcarrier on a subcarrier, It is mapped on N number of subcarrier, L is the positive integer more than or equal to 1.

Alternatively, the value of N is M/2.

It should be understood that device 20 here is embodied in the form of functional unit.Here term " unit " Can refer to using peculiar integrated circuit (Application Specific Integrated Circuit, referred to as " ASIC "), electronic circuit, for perform one or more softwares or firmware program processor (for example Shared processor, proprietary processor or group processor etc.) and memory, merging logic circuit and/or other Support the suitable assembly of described function.In an optional example, those skilled in the art can manage Solution, device 20 can be used for performing each flow and/or step of method 500 in above method embodiment, To avoid repeating, will not be repeated here.

Fig. 9 shows device 30 according to yet another embodiment of the invention, the device 30 include processor 31, Memory 32 and bus system 33, the processor 31 are connected with the memory 32 by bus system 33, The memory 32 is used for store instruction, and the processor 31 is used to perform the instruction of the memory 32 storage, So that the device 30 performs base station or the step performed by user equipment in above method 300.Example,

Processor 31, discrete Fourier transform DFT treatment is carried out for input data, obtains DFT numbers According to sequence；

The processor 31, is additionally operable to enter the DFT data sequences and pilot frequency sequence in same symbol Row OFDM.

The device of the embodiment of the present invention, by input data carry out after discrete Fourier transform treatment with pilot tone sequence Row reflect and OFDM are carried out in same symbol.Passed thereby, it is possible to information in reducing communication system Peak to average power ratio when defeated, and pilot tone transmission expense can be reduced.

It should be understood that in embodiments of the present invention, optionally, the processor 31 can be that center treatment is single First (Central Processing Unit, abbreviation CPU), the processor 31 can also be other general places Reason device, digital signal processor (Digital Signal Processing, abbreviation DSP), special integrated electricity Road (Application Specific Integrated Circuit, abbreviation ASIC), field programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or other PLDs, Discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor Or the processor can also be any conventional processor etc..

Optionally, the processor 31 can also be application specific processor, and the application specific processor can include base At least one of tape handling chip, radio frequency processing chip etc..Further, the application specific processor may be used also With including the chip with other dedicated processes functions of base station.

The memory 32 can include read-only storage and random access memory, and be carried to processor 31 For instruction and data.The a part of of memory 32 can also include nonvolatile RAM. For example, memory 32 can be with the information of storage device type.

The bus system 33 can also include power bus, controlling bus in addition to including data/address bus With status signal bus in addition etc..But for the sake of for clear explanation, various buses are all designated as bus in figure System 33.

In implementation process, each step of the above method can be by the integrated of the hardware in processor 31 The instruction of logic circuit or software form is completed.The step of method with reference to disclosed in the embodiment of the present invention Hardware processor can be embodied directly in and perform completion, or with the hardware in processor and software module group Conjunction performs completion.Software module may be located at random access memory, flash memory, read-only storage, it is programmable only In the ripe storage medium in reading memory or electrically erasable programmable memory, register etc. this area. The storage medium is located at memory 32, and processor 31 reads the information in memory 32, with reference to its hardware The step of completing the above method.To avoid repeating, it is not detailed herein.

Alternatively, as one embodiment, the processor 31 specifically for：By the pilot frequency sequence according to The mode of distributed mapping is mapped on K subcarrier in M subcarrier in the symbol, and K is Positive integer less than or equal to M-N, M is the number of the effective subcarrier in the symbol, and N is the DFT The points for the treatment of；With the K in the M subcarrier that the DFT data sequences are mapped in the symbol On the different N number of subcarrier of subcarrier.

Alternatively, as one embodiment, the processor 31 specifically for：By the DFT data sequences It is mapped on N number of subcarrier after carrying out phase place, wherein, the phase rotation coefficient of the phase place ForS is the numbering of subcarrier, and T is the inverse fast Fourier transform IFFT point in the communication system Number.

Alternatively, as one embodiment, the processor 31 specifically for：By the pilot frequency sequence according to The mode on a subcarrier is mapped to every L subcarrier, is mapped on the K subcarrier, L is Positive integer more than or equal to 1.

Alternatively, as one embodiment, the value of N is M/2.

It should be understood that device 30 according to embodiments of the present invention may correspond to dress according to embodiments of the present invention The above and other operation and/or function of the modules in 10, and device 30 is put respectively in order to realize The corresponding flow of the method 300 of Fig. 3, for sake of simplicity, will not be repeated here.

The device of the embodiment of the present invention, by input data carry out after discrete Fourier transform treatment with pilot tone sequence Being listed in carries out OFDM in same symbol.Thereby, it is possible to reduce information transfer in communication system When peak to average power ratio, and can reduce pilot tone send expense.

Figure 10 shows device 40 according to yet another embodiment of the invention, and the device 40 includes processor 41st, memory 42 and bus system 43, the processor 41 and the memory 42 pass through bus system 43 It is connected, the memory 42 is used for store instruction, the processor 41 is stored for performing the memory 42 Instruction so that the device 40 performs the step performed by base station in above method 500.Example,

Processor 41, leaf transformation DFT treatment in N point discrete Fouriers is carried out for the first data, obtains One DFT data sequences, first data are corresponding with first group of user equipment, wherein, N is less than M, M is the number of effective subcarrier that includes of system bandwidth of the communication system, and M is the positive integer more than 1；

The processor 41, is additionally operable to for the second data to carry out K point DFT treatment, obtains the 2nd DFT Data sequence, second data are corresponding with second group of user equipment, and K is less than or equal to M-N；

The processor 41, is additionally operable to exist a DFT data sequences and the 2nd DFT data sequences OFDM is carried out in same symbol.

Two groups of data of user equipment are carried out independent discrete fourier and become by the device of the embodiment of the present invention Change treatment and subcarrier maps, it is ensured that two groups of user equipmenies are independently transmitted, and thus, every group of user sets It is standby can be independent carry out multiple-input and multiple-output treatment, obtain diversity, multiplexing, array gain, and can Peak to average power ratio in reduction communication system during transmission information.

It should be understood that in embodiments of the present invention, optionally, the processor 41 can be that center treatment is single First (Central Processing Unit, abbreviation CPU), the processor 41 can also be other general places Reason device, digital signal processor (Digital Signal Processing, abbreviation DSP), special integrated electricity Road (Application Specific Integrated Circuit, abbreviation ASIC), field programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or other PLDs, Discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor Or the processor can also be any conventional processor etc..

Optionally, the processor 41 can also be application specific processor, and the application specific processor can include base At least one of tape handling chip, radio frequency processing chip etc..Further, the application specific processor may be used also With including the chip with other dedicated processes functions of base station.

The memory 42 can include read-only storage and random access memory, and be carried to processor 41 For instruction and data.The a part of of memory 42 can also include nonvolatile RAM. For example, memory 42 can be with the information of storage device type.

The bus system 43 can also include power bus, controlling bus in addition to including data/address bus With status signal bus in addition etc..But for the sake of for clear explanation, various buses are all designated as bus in figure System 43.

In implementation process, each step of the above method can be by the integrated of the hardware in processor 41 The instruction of logic circuit or software form is completed.The step of method with reference to disclosed in the embodiment of the present invention Hardware processor can be embodied directly in and perform completion, or with the hardware in processor and software module group Conjunction performs completion.Software module may be located at random access memory, flash memory, read-only storage, it is programmable only In the ripe storage medium in reading memory or electrically erasable programmable memory, register etc. this area. The storage medium is located at memory 42, and processor 41 reads the information in memory 42, with reference to its hardware The step of completing the above method.To avoid repeating, it is not detailed herein.

Alternatively, as one embodiment, the processor 41 specifically for：By a DFT data N number of subcarrier in the M subcarrier that sequence is mapped in the symbol according to the mode of distributed mapping On；N number of sub- load is removed in the M subcarrier that 2nd DFT data sequences are mapped in the symbol On K subcarrier in other subcarriers outside ripple.

Alternatively, as one embodiment, the processor 41 specifically for：By the 2nd DFT data Sequence is mapped in M subcarrier in the symbol in addition to N number of subcarrier after carrying out phase place Other subcarriers in K subcarrier on；

Alternatively, as one embodiment, the processor 41 specifically for：By a DFT data Sequence is mapped to N number of sub- load according to the mode being mapped to every L subcarrier on a subcarrier On ripple, L is the positive integer more than or equal to 1.

Alternatively, as one embodiment, the value of N is M/2.

The device of the embodiment of the present invention, two groups of data of user equipment are carried out at independent discrete fourier Reason and subcarrier maps, it is ensured that two groups of user equipmenies are independently transmitted, and thus, every group of user equipment can Multiple-input and multiple-output treatment is carried out with independent, diversity, multiplexing, array gain is obtained, and can reduce The peak to average power ratio of communication system.

It should be understood that in embodiments of the present invention, term "and/or" is only a kind of pass for describing affiliated partner Connection relation, expression there may be three kinds of relations.For example, A and/or B, can represent：Individualism A, There is A and B simultaneously, individualism B these three situations.In addition, character "/" herein, general table Show forward-backward correlation pair as if a kind of relation of "or".

It should be understood that in embodiments of the present invention, " B corresponding with A " represents that B is associated with A, root Can determine B according to A.It is also to be understood that determining that B is not meant to determine only according to A according to A B, can also determine B according to A and/or other information.

Those of ordinary skill in the art are it is to be appreciated that with reference to each of the embodiments described herein description The unit and algorithm steps of example, can come real with electronic hardware, computer software or the combination of the two It is existing, in order to clearly demonstrate the interchangeability of hardware and software, in the above description according to function one As property describe the composition and step of each example.These functions are held with hardware or software mode actually OK, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can be to each It is specific to apply to realize described function, but this realization it is not considered that super using distinct methods Go out the scope of the present invention.

It is apparent to those skilled in the art that, it is for convenience of description and succinctly, above-mentioned The specific work process of the system, device and unit of description, it is right in preceding method embodiment to may be referred to Process is answered, be will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed system, device and Method, can realize by another way.For example, device embodiment described above is only to show Meaning property, for example, the division of unit, only a kind of division of logic function, can have when actually realizing Other dividing mode, such as multiple units or component can be combined or be desirably integrated into another and be System, or some features can be ignored, or not perform.In addition, shown or discussed coupling each other Conjunction or direct-coupling or communication connection can be by the INDIRECT COUPLING or logical of some interfaces, device or unit Letter connection, or electricity, machinery or other forms connections.

As separating component illustrate unit can be or may not be it is physically separate, as list The part of unit's display can be or may not be physical location, you can with positioned at a place, or Can also be distributed on multiple NEs.Part therein or complete can according to the actual needs be selected Portion's unit realizes the purpose of embodiment of the present invention scheme.

In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit In, or unit be individually physically present, or two or more units are integrated in In one unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ software The form of functional unit is realized.

Through the above description of the embodiments, it is apparent to those skilled in the art that originally Invention can be realized with hardware, or firmware is realized, or combinations thereof mode is realized.When using software When realizing, can be using above-mentioned functions storage in computer-readable medium or as on computer-readable medium One or more instruction or code be transmitted.Computer-readable medium include computer-readable storage medium and Communication media, wherein communication media include being easy to transmit computer program from a place to another place Any medium.Storage medium can be any usable medium that computer can be accessed.As example but It is not limited to：Computer-readable medium can include RAM, ROM, EEPROM, CD-ROM or its His optical disc storage, magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store With instruction or data structure form desired program code and can by computer access it is any its His medium.In addition.Any connection can be appropriate as computer-readable medium.If for example, software Be use coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (Digital Subscriber Line, Abbreviation DSL) or the such as wireless technology of infrared ray, radio and microwave etc from website, server Or the transmission of other remote sources, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as The wireless technology of infrared ray, wireless and microwave etc be included in affiliated medium it is fixing in.Such as institute of the present invention Use, disk (Disk) and dish (disc) include compression laser disc (CD), laser disc, laser disc, number The general laser disc of word (DVD), floppy disk and Blu-ray Disc, the replicate data of the usual magnetic of which disk, and dish Then with laser come optical replicate data.Above combination above should also be as being included in the guarantor of computer-readable medium Within the scope of shield.

In a word, the preferred embodiment of technical solution of the present invention is these are only, this hair is not intended to limit Bright protection domain.All any modifications within the spirit and principles in the present invention, made, equivalent, Improve etc., should be included within the scope of the present invention.

Claims

1. a kind of method that signal of communication is processed in communication system, it is characterised in that methods described includes：

Input data is carried out into discrete Fourier transform DFT treatment, DFT data sequences are obtained；

The DFT data sequences and pilot frequency sequence are carried out into OFDM in same symbol.

2. method according to claim 1, it is characterised in that described by the DFT data sequence Row carry out OFDM with pilot frequency sequence in same symbol, including：

The pilot frequency sequence is carried according to the M son that the mode of distributed mapping is mapped in the symbol On K subcarrier in ripple, K is the positive integer less than or equal to M-N, and M is in the symbol The number of effective subcarrier, N is the points of the DFT treatment；

With described K son in the M subcarrier that the DFT data sequences are mapped in the symbol On the different N number of subcarrier of carrier wave.

3. method according to claim 2, it is characterised in that described by the DFT data sequence Row are mapped to different from the K subcarrier N number of subcarriers in M subcarrier in the symbol On, including：

It is mapped on N number of subcarrier after the DFT data sequences are carried out into phase place, wherein, The phase rotation coefficient of the phase place isS is the numbering of subcarrier, and T is the communication system Inverse fast Fourier transform IFFT point number in system.

4. according to the method in claim 2 or 3, it is characterised in that described by the pilot tone sequence Arrange on K subcarrier in M subcarrier being mapped in the symbol according to distributed mapping mode, Including：

By the pilot frequency sequence according to the mode being mapped to every L subcarrier on a subcarrier, mapping Onto the K subcarrier, L is the positive integer more than or equal to 1.

5. method according to any one of claim 1 to 4, it is characterised in that the value of N It is M/2.

6. a kind of method that signal of communication is processed in communication system, it is characterised in that methods described includes：

First data are carried out into leaf transformation DFT treatment in N point discrete Fouriers, a DFT data sequences are obtained Row, first data are corresponding with first group of user equipment, wherein, N is less than M, and M is described logical The number of effective subcarrier that the system bandwidth of letter system includes, M is the positive integer more than 1；

Second data are carried out into K point DFT treatment, the 2nd DFT data sequences, second number is obtained According to corresponding with second group of user equipment, K is less than or equal to M-N；

The first DFT data sequences and the 2nd DFT data sequences are entered in same symbol Row OFDM.

7. method according to claim 6, it is characterised in that described by a DFT numbers OFDM is carried out in same symbol with the 2nd DFT data sequences according to sequence, including：

The first DFT data sequences are mapped in the symbol according to the mode of distributed mapping On N number of subcarrier in M subcarrier；

The N is removed in the M subcarrier that the 2nd DFT data sequences are mapped in the symbol On K subcarrier in other subcarriers outside individual subcarrier.

8. method according to claim 7, it is characterised in that described by the 2nd DFT numbers According to other sons in sequence mapping to M subcarrier in the symbol in addition to N number of subcarrier On K subcarrier in carrier wave, including：

The M son that the 2nd DFT data sequences be mapped to after phase place in the symbol On K subcarrier in other subcarriers in carrier wave in addition to N number of subcarrier；

Wherein, the phase rotation coefficient of the phase place isS is the numbering of subcarrier, and T is institute State the inverse fast Fourier transform IFFT point number in communication system.

9. the method according to any one of claim 6 to 8, it is characterised in that described by institute A DFT data sequences are stated to be carried according to the M son that the mode of distributed mapping is mapped in the symbol On N number of subcarrier in ripple, including：

The first DFT data sequences are mapped on a subcarrier according to every L subcarrier Mode, is mapped on N number of subcarrier, and L is the positive integer more than or equal to 1.

10. the method according to any one of claim 6 to 9, it is characterised in that the value of N It is M/2.

11. a kind of devices, it is characterised in that including processor and memory, the processor and described Memory is connected by bus system, and the memory is used for store instruction, and the processor is used to perform The instruction of the memory storage so that described device is performed as described in any one in claim 1 to 5 Method.

12. a kind of devices, it is characterised in that including processor and memory, the processor and described Memory is connected by bus system, and the memory is used for store instruction, and the processor is used to perform The instruction of the memory storage so that device is performed as described in any one in claim 6 to 10 Method.