CN108289069A - A kind of transmission method of reference signal, transmitting terminal and receiving terminal - Google Patents

A kind of transmission method of reference signal, transmitting terminal and receiving terminal Download PDF

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Publication number
CN108289069A
CN108289069A CN201710013273.3A CN201710013273A CN108289069A CN 108289069 A CN108289069 A CN 108289069A CN 201710013273 A CN201710013273 A CN 201710013273A CN 108289069 A CN108289069 A CN 108289069A
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China
Prior art keywords
reference signal
dft
ofdm symbols
signal
channel information
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CN201710013273.3A
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CN108289069B (en
Inventor
李辉
高秋彬
塔玛拉卡·拉盖施
陈润华
苏昕
黄秋萍
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201710013273.3A priority Critical patent/CN108289069B/en
Publication of CN108289069A publication Critical patent/CN108289069A/en
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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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • 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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a kind of transmission method of reference signal, transmitting terminal and receiving terminal, this method and may include：Transmitting terminal transmits demodulated reference signal in DFT S OFDM symbols to receiving terminal；Transmitting terminal transmits Phase Tracking reference signal and data-signal in a manner of frequency division multiplexing in DFT S OFDM symbols to the receiving terminal.The embodiment of the present invention can reduce the phase noise of DFT S ofdm signals transmission.

Description

A kind of transmission method of reference signal, transmitting terminal and receiving terminal
Technical field
The present invention relates to field of communication technology, more particularly to a kind of transmission method of reference signal, transmitting terminal and receiving terminal.
Background technology
Often there is phase noise in the signal of communication system, wherein phase noise comes from transmitter in transmission process With the local oscillator in receiver, the transmission of multi-carrier signal will be had an impact.And high band (such as：6GHz More than) influence of phase noise will be more serious.However, can be used in following communication system resources of more high bands into Row data transmission, such as：The resource of high band (such as 6GHz to 100GHz) can be used into row data communication in following 5G, and Following 6G is equally possible to use the resource of high band into row data communication.And peak averaging work(is considered in a communications system Rate ratio (Peak-to-Average-Power Ratio, PAPR) is using the orthogonal of discrete Fourier transform spread spectrum in transmission Frequency division multiplexing access technology (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing, DFT-S-OFDM) signal.And can equally there be phase using the transmission of DFT-S-OFDM signals The influence of position noise.It is asked as it can be seen that the phase noise for how reducing DFT-S-OFDM signal transmissions is the current technology for being badly in need of solving Topic.
Invention content
The purpose of the present invention is to provide a kind of transmission method of reference signal, transmitting terminal and receiving terminals, are reduced with reaching The purpose of the phase noise of DFT-S-OFDM signal transmissions.
In order to achieve the above object, the embodiment of the present invention provides a kind of transmission method of reference signal, including：
Transmitting terminal transmits demodulated reference signal on DFT-S-OFDM symbols to receiving terminal；
Transmitting terminal is on DFT-S-OFDM symbols to receiving terminal transmission Phase Tracking reference in a manner of frequency division multiplexing Signal and data-signal.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, the transmitting terminal transmits demodulated reference signal on DFT-S-OFDM symbols to receiving terminal, including：
The transmitting terminal maps to demodulated reference signal on N number of subcarrier of DFT-S-OFDM symbols, by N number of son Demodulated reference signal on carrier wave is converted into time domain and is sent to the receiving terminal, wherein the N is the subcarrier of transmission bandwidth Number.
Optionally, the transmitting terminal transmits phase in a manner of frequency division multiplexing on DFT-S-OFDM symbols to the receiving terminal Position track reference signal and data-signal, including：
The Phase Tracking reference signal is mapped to the M in N number of subcarrier of DFT-S-OFDM symbols by the transmitting terminal On a subcarrier；
T modulation symbol of data-signal is mapped to the T in N number of subcarrier in addition to the M subcarrier On subcarrier；
Modulation symbol in Phase Tracking reference signal and the T subcarrier on M subcarrier is converted into time domain And it is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is the subcarrier of transmission bandwidth Number.
Optionally, described to map to T modulation symbol of data-signal in N number of subcarrier except described M son carries On T subcarrier except wave, including：
T modulation symbol of data-signal is obtained into T parallel modulation symbols after serioparallel exchange, and to the T Parallel modulation symbols carry out discrete Fourier transform, obtain T output data, the T output data are mapped to described N number of On T subcarrier in subcarrier in addition to the M subcarrier；Or
N number of modulation symbol of data-signal is obtained into N number of parallel modulation symbols after serioparallel exchange, and to described N number of Parallel modulation symbols carry out discrete Fourier transform, obtain N number of output data, and T output is selected in N number of output data Data map to the T output data on T subcarrier in N number of subcarrier in addition to the M subcarrier.
The embodiment of the present invention also provides a kind of transmission method of reference signal, including：
Receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates the demodulation ginseng Examine the channel information of signal；
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel of the demodulated reference signal Information compensates, and is compensated channel information；
The receiving terminal demodulates the data-signal using the compensation channel information.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, the receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates The channel information of the demodulated reference signal is counted, including：
Receiving terminal receives the demodulated reference signal that is transmitted on DFT-S-OFDM symbols of transmitting terminal, and by the demodulation reference Signal carries out frequency-domain transform, estimates the channel information of the demodulated reference signal after frequency-domain transform.
Optionally, the receiving terminal receive the transmitting terminal on DFT-S-OFDM symbols frequency division multiplexing transmit phase with Track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and the signal received on the DFT-S-OFDM symbols is subjected to frequency-domain transform, and estimate that frequency domain becomes The channel information of Phase Tracking reference signal after changing.
Optionally, channel information of the receiving terminal based on the Phase Tracking reference signal believes the demodulation reference Number channel information compensate, be compensated channel information, including：
The receiving terminal believes the channel of the channel information of the Phase Tracking reference signal and the demodulated reference signal Breath is compared, and obtains the DFT-S-OFDM symbols where the Phase Tracking reference signal and data-signal relative to the solution The phase change information of the DFT-S-OFDM symbols where reference signal is adjusted, and using the phase change information to the demodulation The channel information of reference signal compensates, and is compensated channel information.
Optionally, the receiving terminal receive the transmitting terminal on DFT-S-OFDM symbols frequency division multiplexing transmit phase with Track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on multiple DFT-S-OFDM symbols Reference signal and data-signal, and will be received on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols Signal carries out frequency-domain transform, and estimates the channel of the Phase Tracking reference signal after frequency-domain transform in each DFT-S-OFDM symbols Information；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel of the demodulated reference signal Information compensates, and is compensated channel information, including：
The receiving terminal by the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols with it is described The channel information of demodulated reference signal is compared, and obtains each DFT-S-OFDM symbols relative to the demodulated reference signal institute DFT-S-OFDM symbols phase change information, and use each DFT-S-OFDM symbols corresponding phase change information point The other channel information to the demodulated reference signal compensates, and obtains the corresponding compensation channel letter of each DFT-S-OFDM symbols Breath；
The receiving terminal demodulates the data-signal using the compensation channel information, including：
Respective data-signal is demodulated using the corresponding compensation channel information of each DFT-S-OFDM symbols.
The embodiment of the present invention also provides a kind of transmitting terminal, including：
First transmission module, for transmitting demodulated reference signal to receiving terminal on DFT-S-OFDM symbols；
Second transmission module, for transmitting phase to the receiving terminal in a manner of frequency division multiplexing on DFT-S-OFDM symbols Position track reference signal and data-signal.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, first transmission module is used to map to demodulated reference signal N number of son of DFT-S-OFDM symbols On carrier wave, the demodulated reference signal on N number of subcarrier is converted into time domain and is sent to the receiving terminal, wherein the N For the subcarrier number of transmission bandwidth.
Optionally, second transmission module, including：
First map unit, N number of sub- load for the Phase Tracking reference signal to be mapped to DFT-S-OFDM symbols On M subcarrier in wave；
Second map unit removes the M for mapping to T modulation symbol of data-signal in N number of subcarrier On T subcarrier except a subcarrier；
Converter unit, for according with the modulation in the Phase Tracking reference signal and the T subcarrier on M subcarrier It number is converted into time domain and is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is transmission The subcarrier number of bandwidth.
Optionally, second map unit is used to T modulation symbol of data-signal obtaining T after serioparallel exchange A parallel modulation symbols, and discrete Fourier transform is carried out to the T parallel modulation symbols, T output data is obtained, by institute It states on the T subcarrier that T output data maps in N number of subcarrier in addition to the M subcarrier；Or
Second map unit is used to obtain N number of modulation symbol of data-signal after serioparallel exchange N number of parallel Modulation symbol, and discrete Fourier transform is carried out to N number of parallel modulation symbols, N number of output data is obtained, described N number of T output data is selected in output data, and the T output data is mapped in N number of subcarrier except described M son carries On T subcarrier except wave.
The embodiment of the present invention also provides a kind of receiving terminal, including：
First receiving module, the demodulated reference signal transmitted on DFT-S-OFDM symbols for receiving transmitting terminal, and estimate Count the channel information of the demodulated reference signal；
Second receiving module, for receive the transmitting terminal on DFT-S-OFDM symbols frequency division multiplexing transmit phase with Track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
Compensating module is used for the channel information based on the Phase Tracking reference signal, to the demodulated reference signal Channel information compensates, and is compensated channel information；
Demodulation module, for demodulating the data-signal using the compensation channel information.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, first receiving module is for receiving the demodulation reference that transmitting terminal transmits on DFT-S-OFDM symbols Signal, and the demodulated reference signal is subjected to frequency-domain transform, estimate the channel information of the demodulated reference signal after frequency-domain transform.
Optionally, second receiving module is passed for receiving transmitting terminal frequency division multiplexing on DFT-S-OFDM symbols Defeated Phase Tracking reference signal and data-signal, and the signal received on the DFT-S-OFDM symbols is subjected to frequency domain change It changes, and estimates the channel information of the Phase Tracking reference signal after frequency-domain transform.
Optionally, the compensating module is used for the channel information of the Phase Tracking reference signal and the demodulation reference The channel information of signal is compared, and obtains the DFT-S-OFDM symbols where the Phase Tracking reference signal and data-signal Believe relative to the phase change information of the DFT-S-OFDM symbols where the demodulated reference signal, and using the phase change Breath compensates the channel information of the demodulated reference signal, is compensated channel information.
Optionally, second receiving module is multiple for receiving transmitting terminal frequency division on multiple DFT-S-OFDM symbols With the Phase Tracking reference signal and data-signal of transmission, and will in the multiple DFT-S-OFDM symbols each DFT-S- The signal that is received in OFDM symbol carries out frequency-domain transform, and estimates the phase after frequency-domain transform in each DFT-S-OFDM symbols The channel information of track reference signal；
The compensating module is used for the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols is equal It is compared with the channel information of the demodulated reference signal, obtains each DFT-S-OFDM symbols relative to the demodulation reference The phase change information of DFT-S-OFDM symbols where signal, and use the corresponding phase change of each DFT-S-OFDM symbols Information respectively compensates the channel information of the demodulated reference signal, obtains the corresponding compensation of each DFT-S-OFDM symbols Channel information；
The demodulation module is used to demodulate respective number using the corresponding compensation channel information of each DFT-S-OFDM symbols It is believed that number.
The above-mentioned technical proposal of the present invention at least has the advantages that：
The embodiment of the present invention, transmitting terminal transmit demodulated reference signal on DFT-S-OFDM symbols to receiving terminal；Transmitting terminal On DFT-S-OFDM symbols Phase Tracking reference signal and data-signal are transmitted to the receiving terminal in a manner of frequency division multiplexing. It can be with due in DFT-S-OFDM symbol frequency division multiplexings Phase Tracking reference signal and data-signal, allowing for receiving terminal in this way Channel compensation is carried out to the channel information of demodulated reference signal based on Phase Tracking reference signal, in this way using the channel after compensation Information mediation data-signal, so that it may to reduce the phase noise of DFT-S-OFDM signal transmissions.
Description of the drawings
Fig. 1 is schematic network structure provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the transmission method of reference signal provided in an embodiment of the present invention；
Fig. 3 is a kind of transmission schematic diagram of reference signal provided in an embodiment of the present invention；
Fig. 4 is a kind of transmission structural schematic diagram of transmitting terminal provided in an embodiment of the present invention；
Fig. 5 is the transmission schematic diagram of another reference signal provided in an embodiment of the present invention；
Fig. 6 is the transmission structural schematic diagram of another transmitting terminal provided in an embodiment of the present invention；
Fig. 7 is the flow chart of the transmission method of another reference signal provided in an embodiment of the present invention；
Fig. 8 is a kind of structure chart of transmitting terminal provided in an embodiment of the present invention；
Fig. 9 is the structure chart of another transmitting terminal provided in an embodiment of the present invention；
Figure 10 is a kind of structure chart of receiving terminal provided in an embodiment of the present invention；
Figure 11 is the structure chart of another transmitting terminal provided in an embodiment of the present invention；
Figure 12 is the structure chart of another receiving terminal provided in an embodiment of the present invention.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.
Referring to Fig. 1, Fig. 1 is the applicable network structure of the embodiment of the present invention, as shown in Figure 1, including 11 He of transmitting terminal Receiving terminal 12, wherein the equipment that transmitting terminal 11 can be understood as transmission (or transmission) data, and receiving terminal 12 can be understood as The equipment for receiving data.Wherein, with transmitting terminal 11 it is in the accompanying drawings user equipment, receiving terminal 12 is that network side equipment is lifted Example, but in the embodiment of the present invention, transmitting terminal 11 can be network side equipment, and when transmitting terminal 11 is network side equipment, receive End 12 can be user equipment or network side equipment；Or transmitting terminal 11 be user equipment when, receiving terminal 12 can be network Side apparatus or user equipment.In addition, in the embodiment of the present invention, user equipment can be mobile phone, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable device Terminal side equipments such as (Wearable Device), it should be noted that do not limit transmitting terminal 11 in embodiments of the present invention Concrete type, network side equipment can be transmission receiving point (TRP, Transmission Reception Point), Huo Zheke To be base station, base station can be macro station, such as LTE eNB, 5G NR NB.Or network side equipment can be access point (AP, access point).It should be noted that not limiting the concrete type of network side equipment in embodiments of the present invention.
Referring to Fig. 2, the embodiment of the present invention provides a kind of transmission method of reference signal, as shown in Fig. 2, including following step Suddenly：
201, transmitting terminal transmits demodulated reference signal (De Modulation on DFT-S-OFDM symbols to receiving terminal Reference Signal, DMRS)；
202, transmitting terminal transmits Phase Tracking in a manner of frequency division multiplexing on DFT-S-OFDM symbols to the receiving terminal Reference signal (Phase tracking Reference Signal, PTRS) and data-signal.
Wherein, it in step 201 can be one or more DFT-S- in a certain subframe or a certain time slot (slot) Demodulated reference signal is transmitted to receiving terminal, wherein demodulated reference signal carries out data-signal for receiving terminal in OFDM symbol Demodulation.
And step 202 can be in a certain subframe or a certain time slot on one or more DFT-S-OFDM symbol to Phase Tracking reference signal and data-signal are transmitted in receiving terminal transmission in a manner of frequency division multiplexing.And same DFT-S-OFDM symbols In can be one or more subcarrier transmission Phase Tracking reference signal, remaining all subcarrier transmission data signal.
Wherein, the DFT-S-OFDM symbols and transmission frequency division multiplexing transmission Phase Tracking reference for transmitting demodulated reference signal are believed Number and the DFT-S-OFDM symbols of data-signal can be for the DFT-S-OFDM symbols in same subframe or same time slot.Separately Outside, in the embodiment of the present invention, the sequence that executes of step 201 and step 202 is not limited, such as：Can be performed simultaneously, or It first carries out step 202 and executes step 201 again, or execute be possible in turn.To first carry out step 201 progress in attached drawing It illustrates.In addition, above-mentioned data-signal can be upstream data, and can also be downlink data in some scenes certainly, it is right This is not construed as limiting.
It should be noted that in the embodiment of the present invention, Phase Tracking reference signal is not construed as limiting, which can be with It is the reference signal of the phase change of any each DFT-S-OFDM symbols that can track transmitting terminal transmission, it can be with demodulation Reference signal is similar, is used in transmission data signal, and can be transmitted after precoding.
In the embodiment of the present invention, it may be implemented to send demodulated reference signal to receiving terminal by above-mentioned, and multiple with frequency division Phase Tracking reference signal and data-signal are transmitted to receiving terminal with mode, is joined so that receiving terminal can be based on Phase Tracking It examines signal and channel compensation is carried out to the channel information of demodulated reference signal, believed in this way using the channel information condition data after compensation Number, so that it may to reduce the phase noise of DFT-S-OFDM signal transmissions.The detailed process of receiving terminal can be as follows：
Receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates the demodulation ginseng Examine the channel information of signal；
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel of the demodulated reference signal Information compensates, and is compensated channel information；
The receiving terminal demodulates the data-signal using the compensation channel information.
After receiving terminal receives above-mentioned demodulated reference signal, so that it may to carry out channel estimation to it, to obtain above-mentioned solution Adjust the channel information of reference signal, and after obtaining above-mentioned Phase Tracking reference signal, so that it may with to Phase Tracking reference signal into Row channel estimation obtains the channel information of Phase Tracking reference signal, so as to the channel based on Phase Tracking reference signal Information compensates the channel information of demodulated reference signal, to be compensated channel information and demodulate above-mentioned data using it Signal.In this way due to being demodulated to data-signal using compensation channel information, so as to reduce phase noise, even Eliminate phase noise.
Optionally, in the embodiment of the present invention, the DFT-S-OFDM where the Phase Tracking reference signal and data-signal Symbol is different symbols from the DFT-S-OFDM symbols where the demodulated reference signal.
In the embodiment, frequency division multiplexing transmission Phase Tracking reference signal and data-signal DFT-S-OFDM may be implemented Symbol with transmission reconcile reference signal DFT-S-OFDM symbols, have in this way using receiving terminal estimation Phase Tracking reference signal and The channel information of demodulated reference signal, further reduces phase noise.
In addition, in the embodiment of the present invention, due to being using DFT-S-OFDM symbols so as to reaching reduction peak averaging The effect of power ratio (PAPR).
Optionally, in the embodiment of the present invention, above-mentioned transmitting terminal transmits demodulation ginseng on DFT-S-OFDM symbols to receiving terminal Signal is examined, including：
The transmitting terminal maps to demodulated reference signal on N number of subcarrier of DFT-S-OFDM symbols, by N number of son Demodulated reference signal on carrier wave is converted into time domain and is sent to the receiving terminal, wherein the N is the subcarrier of transmission bandwidth Number.
Wherein, it can be in quick Fu using K points the demodulated reference signal on N number of subcarrier to be converted into time domain Leaf inverse transformation (Inverse Fast Fourier Transform, IFFT) is converted into time domain, i.e., the demodulation ginseng on N number of subcarrier It examining signal and is converted into time domain by K points IFFT and be sent to receiving terminal, wherein K may be greater than or be equal to N, such as：16 or 32 etc., this is not construed as limiting.It should be noted that in the embodiment of the present invention, does not limit and carries out time domain transformation using IFFT, He equally may be implemented mapping mode.
And in the receiving end, receiving terminal can be the demodulation reference letter for receiving transmitting terminal and being transmitted on DFT-S-OFDM symbols Number, and the demodulated reference signal is subjected to frequency-domain transform, estimate the channel information of the demodulated reference signal after frequency-domain transform.Its In, above-mentioned by demodulated reference signal progress frequency-domain transform can be Fast Fourier Transform (FFT) (Fast Fourier using K points Transform, FFT) carry out frequency-domain transform, that is, reference signal is reconciled by K point FFT transform to frequency domain, and carries out channel estimation, To obtain the channel information of demodulated reference signal.
Optionally, in the embodiment of the present invention, the transmitting terminal on DFT-S-OFDM symbols in a manner of frequency division multiplexing to The receiving terminal transmission Phase Tracking reference signal and data-signal, including：
The Phase Tracking reference signal is mapped to the M in N number of subcarrier of DFT-S-OFDM symbols by the transmitting terminal On a subcarrier；
T modulation symbol of data-signal is mapped to the T in N number of subcarrier in addition to the M subcarrier On subcarrier；
Modulation symbol in Phase Tracking reference signal and the T subcarrier on M subcarrier is converted into time domain And it is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is the subcarrier of transmission bandwidth Number.
Wherein, above-mentioned M subcarrier can be one or more subcarrier, preferential, it can be by the Phase Tracking Reference signal maps on 1 (i.e. M=1) a subcarrier in N number of subcarrier of DFT-S-OFDM symbols, can increase number in this way It is believed that number transmission, to improve the utilization rate of resource.In addition, when T adds M to be less than N, can also be multiplexed in above-mentioned N number of subcarrier Signal in addition to Phase Tracking reference signal and data-signal, to improve the flexibility of system.
In addition, in the embodiment of the present invention, above-mentioned M subcarrier can be scattered in N number of subcarrier, i.e., N number of subcarrier One or more subcarrier of non-edge transmits Phase Tracking reference signal.Or above-mentioned M subcarrier can also concentrate position In the edge of N number of subcarrier, i.e., one or more edge subcarrier of N number of subcarrier transmits Phase Tracking reference signal.
In addition, above-mentioned time domain transformation can be converted using the IFFT of K points, do not repeat herein.
In the embodiment, receiving terminal can receive transmitting terminal frequency division multiplexing on DFT-S-OFDM symbols to transmit Phase Tracking reference signal and data-signal, and by the signal received on the DFT-S-OFDM symbols carry out frequency domain change It changes, and estimates the channel information of the Phase Tracking reference signal after frequency-domain transform.
Wherein, frequency-domain transform can be converted using the FFT of K points, and carry out letter to the signal after transformation here Road is estimated, the channel information of the Phase Tracking reference signal after frequency-domain transform is obtained.Wherein, receiving terminal is for each multiplexing phase Aforesaid way may be used in the DFT-S-OFDM symbols of track reference signal and data-signal, obtains each DFT-S-OFDM symbols The channel information of Phase Tracking reference signal in number.
Optionally, above-mentioned to map to T modulation symbol of data-signal in N number of subcarrier except described M son carries On T subcarrier except wave, including：
T modulation symbol of data-signal is obtained into T parallel modulation symbols after serioparallel exchange, and to the T Parallel modulation symbols carry out discrete Fourier transform (Discrete Fourier Transform, DFT), obtain T output number According to the T output data is mapped on T subcarrier in N number of subcarrier in addition to the M subcarrier；Or Person
N number of modulation symbol of data-signal is obtained into N number of parallel modulation symbols after serioparallel exchange, and to described N number of Parallel modulation symbols carry out discrete Fourier transform, obtain N number of output data, and T output is selected in N number of output data Data map to the T output data on T subcarrier in N number of subcarrier in addition to the M subcarrier.
In the embodiment, since the modulation symbol of data-signal have passed through discrete Fourier transform, to realize data The lower papr (PAPR) of signal, to improve the transmission performance of data-signal.Wherein, above-mentioned described N number of It can be the M output data of discarding in N number of output data that T output data is selected in output data, and it is a defeated to select T Go out data.
Optionally, in the embodiment of the present invention, receiving terminal is carrying out what the channel information to the demodulated reference signal carried out Compensation can be that the receiving terminal is by the channel of the channel information and the demodulated reference signal of the Phase Tracking reference signal Information is compared, and obtains the DFT-S-OFDM symbols where the Phase Tracking reference signal and data-signal relative to described The phase change information of DFT-S-OFDM symbols where demodulated reference signal, and using the phase change information to the solution It adjusts the channel information of reference signal to compensate, is compensated channel information.
Wherein, here it is the DFT-S-OFDM symbols that Phase Tracking reference signal and data-signal are transmitted with a frequency division multiplexing It number illustrates, the DFT-S-OFDM symbols where Phase Tracking reference signal and data-signal can be obtained through the above steps Phase change information relative to the DFT-S-OFDM symbols where the demodulated reference signal, you can to obtain DFT-S-OFDM The phase change caused by phase noise that signal is undergone.The demodulation is joined using the phase change information in this way The compensation channel information that the channel information of signal compensates is examined, compensation channel information demodulation DFT-S-OFDM is reused Data-signal in symbol even is eliminated phase noise so as to reduce, to improve system performance.Other each DFT-S-OFDM Symbol can be demodulated in an identical manner, not repeated herein.
Or receiving terminal can receive the transmitting terminal phase that frequency division multiplexing transmits on multiple DFT-S-OFDM symbols Position track reference signal and data-signal, and will be connect on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols The signal that receives carries out frequency-domain transform, and estimates the Phase Tracking reference signal after frequency-domain transform in each DFT-S-OFDM symbols Channel information；And the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols is joined with the demodulation The channel information for examining signal is compared, and obtains each DFT-S-OFDM symbols relative to where the demodulated reference signal The phase change information of DFT-S-OFDM symbols, and it is right respectively using the corresponding phase change information of each DFT-S-OFDM symbols The channel information of the demodulated reference signal compensates, and obtains the corresponding compensation channel information of each DFT-S-OFDM symbols； Finally respective data-signal is demodulated using the corresponding compensation channel information of each DFT-S-OFDM symbols.
Wherein, it is to be illustrated with multiple DFT-S-OFDM symbols here, certainly, in the embodiment of the present invention, does not limit This multiple DFT-S-OFDM symbol is carried out at the same time, and can carry out successively, is not construed as limiting to this embodiment of the present invention.
It should be noted that can mutually be tied between the embodiment of the plurality of optional of above-mentioned introduction in the embodiment of the present invention It closes and realizes, can also be implemented separately, this embodiment of the present invention is not construed as limiting.Such as：Following citing：
Example one：
The citing, it is assumed that the transmission bandwidth of the data-signal of transmitting terminal is N=12 subcarrier, with a chronomere (subframe) illustrates, and Fig. 3 gives this sub-frame configuration.
In the citing, transmitting terminal transmits DMRS on DFT-S-OFDM symbols 3, as shown in figure 3, it maps to N=12 Subcarrier is converted into time domain by K=16 points IFFT and is sent to receiving terminal.
And the PTRS sum numbers of transmitting terminal (symbol 1,2,4~14) transmission frequency division multiplexing on remaining DFT-S-OFDM symbol It is believed that number modulation symbol.PTRS signals map on M=1 subcarrier, as shown in figure 3, it is located at band edge subcarrier 1 On.11 data modulation symbols map to after 11 point DFT on subcarrier 2~12.Each symbol becomes by K=16 points IFFT It shifts to time domain and is sent to receiving terminal.
Wherein, the transmission structure diagram of transmitting terminal can be with as shown in figure 4, the modulation symbol of data-signal by string and turns It changes, such as：Obtain 11 parallel modulation symbols, this 11 parallel modulation symbols pass through 11 points of DFT transform, then with phase with Track reference signal is converted into time domain by 16 points of IFFT, is then converted into the signal after time domain and carries out parallel-serial conversion, then is passing through Signal adds cyclic prefix after crossing parallel-serial conversion, is sent to receiving terminal by radio frequency later.
And in the citing, each reception antenna port of receiving terminal or antenna element can in DFT-S-OFDM symbols 1, PTRS signals are received on 2 and 4~14, and carry out channel estimation.By the PTRS on DFT-S-OFDM symbol l subcarriers k=1 The result (channel information) of channel estimation be expressed as P1,l。
And receiving terminal each reception antenna port or antenna element received on DFT-S-OFDM symbols 3 DMRS letter Number, and carry out channel estimation.The result of the channel estimation of DMRS on DFT-S-OFDM symbol l=3 subcarriers k is indicated For Hk,3。
In this way, receiving terminal can according to the channel estimation results of the channel estimation results and DMRS signals of PTRS signals, The DFT-S-OFDM symbols (l=1,2,4~14) where PTRS are estimated relative to the phase change on symbol where DMRSThat is P1,lDivided by Hk,3。
Except, receiving terminal can be using phase change on the DFT-S-OFDM symbols l estimated to the letter of DMRS symbols Road estimated result compensates, and obtains the compensation channel estimation of each subcarrier on symbol lUse the letter after this compensation Road estimated result demodulates the data on DFT-S-OFDM symbols l.
Example two：
The citing assumes that the transmission bandwidth of the data of transmitting terminal is N=12 subcarrier, with chronomere's (subframe) It illustrates, Fig. 5 gives the sub-frame configuration of this embodiment.
In the citing, transmitting terminal can transmit DMRS on DFT-S-OFDM symbols 3, as shown in figure 5, it maps to N= 12 subcarriers are converted into time domain by K=16 points IFFT and are sent to receiving terminal.
Transmitting terminal transmits DMRS on DFT-S-OFDM symbols 3, as shown in figure 5, it maps to N=12 subcarrier, warp It crosses K=16 points IFFT and is converted into time domain and be sent to receiving terminal.
The PTRS and data tune of transmitting terminal (symbol 1,2,4~14) transmission frequency division multiplexing on remaining DFT-S-OFDM symbol Symbol processed.PTRS signals map on M=1 subcarrier, as shown in figure 5, it is located on band center subcarrier 6.12 numbers 12 output datas are obtained after 12 point DFT according to modulation symbol, abandon wherein 1 data, remaining 11 data is reflected respectively It is incident upon on subcarrier 1~5 and 7~12.Each symbol is converted into time domain by K=16 points IFFT and is sent to receiving terminal.
Wherein, the transmission structure diagram of transmitting terminal can be with as shown in fig. 6, the modulation symbol of data-signal by string and turns It changes, such as：12 parallel modulation symbols are obtained, this 12 parallel modulation symbols pass through 12 points of DFT transform, and abandon wherein 1 A modulation symbol, when then remaining 11 parallel modulation symbols are converted into Phase Tracking reference signal by 16 points of IFFT Then domain is converted into the signal after time domain and carries out parallel-serial conversion, then in the signal addition cyclic prefix after parallel-serial conversion, later It is sent to receiving terminal by radio frequency.
In the citing, each reception antenna port of receiving terminal or antenna element can be in DFT-S-OFDM symbols 1,2 With 4~14 on receive PTRS signals, and carry out channel estimation.By the PTRS on DFT-S-OFDM symbol l subcarriers k=6 The result of channel estimation be expressed as P6,l。
Each reception antenna port of receiving terminal or antenna element receive DMRS signals on DFT-S-OFDM symbols 3, And carry out channel estimation.The result of the channel estimation of DMRS on DFT-S-OFDM symbol l=3 subcarriers k is expressed as Hk,3。
Receiving terminal can be estimated according to the channel estimation results of the channel estimation results and DMRS signals of PTRS signals in this way The DFT-S-OFDM symbols (l=1,2,4~14) where PTRS are counted out relative to the phase change on symbol where DMRS
Channel estimation knot of the phase change to DMRS symbols on the DFT-S-OFDM symbols l estimated to receiving terminal use Fruit compensates, and obtains the compensation channel estimation of each subcarrier on symbol lUse the channel estimation after this compensation As a result the data on DFT-S-OFDM symbols l are demodulated.
The embodiment of the present invention, transmitting terminal transmit demodulated reference signal on DFT-S-OFDM symbols to receiving terminal；Transmitting terminal On DFT-S-OFDM symbols Phase Tracking reference signal and data-signal are transmitted to the receiving terminal in a manner of frequency division multiplexing. It can be with due in DFT-S-OFDM symbol frequency division multiplexings Phase Tracking reference signal and data-signal, allowing for receiving terminal in this way Channel compensation is carried out to the channel information of demodulated reference signal based on Phase Tracking reference signal, in this way using the channel after compensation Information mediation data-signal, so that it may to reduce the phase noise of DFT-S-OFDM signal transmissions.
Referring to Fig. 7, the embodiment of the present invention provides a kind of transmission method of reference signal, as shown in fig. 7, comprises following step Suddenly：
701, receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates the solution Adjust the channel information of reference signal；
702, the receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols Reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
703, channel information of the receiving terminal based on the Phase Tracking reference signal, to the demodulated reference signal Channel information compensates, and is compensated channel information；
704, the receiving terminal demodulates the data-signal using the compensation channel information.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, the receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates The channel information of the demodulated reference signal is counted, including：
Receiving terminal receives the demodulated reference signal that is transmitted on DFT-S-OFDM symbols of transmitting terminal, and by the demodulation reference Signal carries out frequency-domain transform, estimates the channel information of the demodulated reference signal after frequency-domain transform.
Optionally, the receiving terminal receive the transmitting terminal on DFT-S-OFDM symbols frequency division multiplexing transmit phase with Track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and the signal received on the DFT-S-OFDM symbols is subjected to frequency-domain transform, and estimate that frequency domain becomes The channel information of Phase Tracking reference signal after changing.
Optionally, channel information of the receiving terminal based on the Phase Tracking reference signal believes the demodulation reference Number channel information compensate, be compensated channel information, including：
The receiving terminal believes the channel of the channel information of the Phase Tracking reference signal and the demodulated reference signal Breath is compared, and obtains the DFT-S-OFDM symbols where the Phase Tracking reference signal and data-signal relative to the solution The phase change information of the DFT-S-OFDM symbols where reference signal is adjusted, and using the phase change information to the demodulation The channel information of reference signal compensates, and is compensated channel information.
Optionally, the receiving terminal receive the transmitting terminal on DFT-S-OFDM symbols frequency division multiplexing transmit phase with Track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on multiple DFT-S-OFDM symbols Reference signal and data-signal, and will be received on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols Signal carries out frequency-domain transform, and estimates the channel of the Phase Tracking reference signal after frequency-domain transform in each DFT-S-OFDM symbols Information；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel of the demodulated reference signal Information compensates, and is compensated channel information, including：
The receiving terminal by the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols with it is described The channel information of demodulated reference signal is compared, and obtains each DFT-S-OFDM symbols relative to the demodulated reference signal institute DFT-S-OFDM symbols phase change information, and use each DFT-S-OFDM symbols corresponding phase change information point The other channel information to the demodulated reference signal compensates, and obtains the corresponding compensation channel letter of each DFT-S-OFDM symbols Breath；
The receiving terminal demodulates the data-signal using the compensation channel information, including：
Respective data-signal is demodulated using the corresponding compensation channel information of each DFT-S-OFDM symbols.
It should be noted that embodiment of the present embodiment as receiving terminal corresponding with embodiment shown in Fig. 2, Specific embodiment may refer to the related description of embodiment shown in Fig. 2, with to avoid repeated explanation, the present embodiment is no longer It repeats.In the present embodiment, the influence for reducing phase noise equally may be implemented.
Referring to Fig. 8, the embodiment of the present invention provides a kind of transmitting terminal, as shown in figure 8, transmitting terminal 800, including：
First transmission module 801, for transmitting demodulated reference signal to receiving terminal on DFT-S-OFDM symbols；
Second transmission module 802, for being passed to the receiving terminal in a manner of frequency division multiplexing on DFT-S-OFDM symbols Defeated Phase Tracking reference signal and data-signal.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, first transmission module 801 is used to demodulated reference signal mapping to the N number of of DFT-S-OFDM symbols On subcarrier, the demodulated reference signal on N number of subcarrier is converted into time domain and is sent to the receiving terminal, wherein institute State the subcarrier number that N is transmission bandwidth.
Optionally, as shown in figure 9, the second transmission module 802, including：
First map unit 8021, for the Phase Tracking reference signal to be mapped to the N number of of DFT-S-OFDM symbols On M subcarrier in subcarrier；
Second map unit 8022 removes institute for mapping to T modulation symbol of data-signal in N number of subcarrier It states on T subcarrier except M subcarrier；
Converter unit 8023 is used for the tune in the Phase Tracking reference signal and the T subcarrier on M subcarrier Sign reversing processed is to time domain and is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is The subcarrier number of transmission bandwidth.
Optionally, second map unit 8022 is used for T modulation symbol of data-signal after serioparallel exchange T parallel modulation symbols are obtained, and discrete Fourier transform is carried out to the T parallel modulation symbols, obtain T output number According to the T output data is mapped on T subcarrier in N number of subcarrier in addition to the M subcarrier；Or Person
Second map unit 8022 is N number of for obtaining N number of modulation symbol of data-signal after serioparallel exchange Parallel modulation symbols, and discrete Fourier transform is carried out to N number of parallel modulation symbols, N number of output data is obtained, described T output data is selected in N number of output data, and the T output data is mapped in N number of subcarrier except the M On T subcarrier except subcarrier.
It should be noted that above-mentioned transmitting terminal 800 can be in the embodiment of the present invention in embodiment of the method in the present embodiment The transmitting terminal of arbitrary embodiment, the arbitrary embodiment of transmitting terminal can be by this in embodiment of the method in the embodiment of the present invention Above-mentioned transmitting terminal 800 in embodiment is realized, and reaches identical advantageous effect, and details are not described herein again.
Referring to Figure 10, the embodiment of the present invention provides a kind of receiving terminal, and as shown in Figure 10, receiving terminal 1000 includes：
First receiving module 1001, the demodulated reference signal transmitted on DFT-S-OFDM symbols for receiving transmitting terminal, And estimate the channel information of the demodulated reference signal；
Second receiving module 1002, for receiving the transmitting terminal phase that frequency division multiplexing transmits on DFT-S-OFDM symbols Position track reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
Compensating module 1003 is used for the channel information based on the Phase Tracking reference signal, believes the demodulation reference Number channel information compensate, be compensated channel information；
Demodulation module 1004, for demodulating the data-signal using the compensation channel information.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, first receiving module 1001 is for receiving the demodulation that transmitting terminal transmits on DFT-S-OFDM symbols Reference signal, and the demodulated reference signal is subjected to frequency-domain transform, estimate the channel of the demodulated reference signal after frequency-domain transform Information.
Optionally, second receiving module 1002 is multiple for receiving transmitting terminal frequency division on DFT-S-OFDM symbols With the Phase Tracking reference signal and data-signal of transmission, and by the signal received on the DFT-S-OFDM symbols into line frequency Domain converts, and estimates the channel information of the Phase Tracking reference signal after frequency-domain transform.
Optionally, the compensating module 1003 is used for the channel information of the Phase Tracking reference signal and the demodulation The channel information of reference signal is compared, and obtains the DFT-S-OFDM where the Phase Tracking reference signal and data-signal Phase change information of the symbol relative to the DFT-S-OFDM symbols where the demodulated reference signal, and become using the phase Change information to compensate the channel information of the demodulated reference signal, is compensated channel information.
Optionally, second receiving module 1002 is for receiving transmitting terminal frequency on multiple DFT-S-OFDM symbols The Phase Tracking reference signal and data-signal of point multiplexing transmission, and will in the multiple DFT-S-OFDM symbols each DFT- The signal that is received on S-OFDM symbols carries out frequency-domain transform, and estimates the phase after frequency-domain transform in each DFT-S-OFDM symbols The channel information of position track reference signal；
The compensating module 1003 is used to believe the channel of the Phase Tracking reference signal in each DFT-S-OFDM symbols Breath is compared with the channel information of the demodulated reference signal, obtains each DFT-S-OFDM symbols relative to the demodulation The phase change information of DFT-S-OFDM symbols where reference signal, and use the corresponding phase of each DFT-S-OFDM symbols Change information respectively compensates the channel information of the demodulated reference signal, and it is corresponding to obtain each DFT-S-OFDM symbols Compensate channel information；
The demodulation module 1004 is used to demodulate using the corresponding compensation channel information of each DFT-S-OFDM symbols respective Data-signal.
It should be noted that above-mentioned receiving terminal 1000 can be in the embodiment of the present invention in embodiment of the method in the present embodiment The receiving terminal of arbitrary embodiment, the arbitrary embodiment of receiving terminal can be by this in embodiment of the method in the embodiment of the present invention Above-mentioned receiving terminal 1000 in embodiment is realized, and reaches identical advantageous effect, and details are not described herein again.
Referring to Figure 11, the embodiment of the present invention provides the structure of another transmitting terminal, which includes：Processor 1100, Transceiver 1111, memory 1120, user interface 1130 and bus interface, wherein：
Processor 1100 executes following process for reading the program in memory 1120：
By transceiver 1111 demodulated reference signal is transmitted to receiving terminal on DFT-S-OFDM symbols；
Transceiver 1111 on DFT-S-OFDM symbols in a manner of frequency division multiplexing to the receiving terminal transmit phase Track reference signal and data-signal.
Wherein, transceiver 1111, for sending and receiving data under the control of processor 1100.
In fig. 11, bus architecture may include the bus and bridge of any number of interconnection, specifically by 1100 generation of processor The various circuits for the memory that the one or more processors and memory 1120 of table represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 1111 can To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 1130, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..
Processor 1100 is responsible for bus architecture and common processing, and memory 1120 can store processor 1100 and exist Execute used data when operation.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, described to transmit demodulated reference signal to receiving terminal on DFT-S-OFDM symbols, including：
Demodulated reference signal is mapped on N number of subcarrier of DFT-S-OFDM symbols, by the solution on N number of subcarrier Reference signal is adjusted to be converted into time domain and be sent to the receiving terminal, wherein the N is the subcarrier number of transmission bandwidth.
Optionally, described to transmit Phase Tracking to the receiving terminal in a manner of frequency division multiplexing on DFT-S-OFDM symbols Reference signal and data-signal, including：
The Phase Tracking reference signal is mapped on M subcarrier in N number of subcarrier of DFT-S-OFDM symbols；
T modulation symbol of data-signal is mapped to the T in N number of subcarrier in addition to the M subcarrier On subcarrier；
Modulation symbol in Phase Tracking reference signal and the T subcarrier on M subcarrier is converted into time domain And it is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is the subcarrier of transmission bandwidth Number.
Optionally, described to map to T modulation symbol of data-signal in N number of subcarrier except described M son carries On T subcarrier except wave, including：
T modulation symbol of data-signal is obtained into T parallel modulation symbols after serioparallel exchange, and to the T Parallel modulation symbols carry out discrete Fourier transform, obtain T output data, the T output data are mapped to described N number of On T subcarrier in subcarrier in addition to the M subcarrier；Or
N number of modulation symbol of data-signal is obtained into N number of parallel modulation symbols after serioparallel exchange, and to described N number of Parallel modulation symbols carry out discrete Fourier transform, obtain N number of output data, and T output is selected in N number of output data Data map to the T output data on T subcarrier in N number of subcarrier in addition to the M subcarrier.
It should be noted that above-mentioned transmitting terminal can be arbitrary in embodiment of the method in the embodiment of the present invention in the present embodiment The transmitting terminal of embodiment, the arbitrary embodiment of transmitting terminal can be implemented by this in embodiment of the method in the embodiment of the present invention Above-mentioned transmitting terminal in example is realized, and reaches identical advantageous effect, and details are not described herein again.
Referring to Figure 12, show that a kind of structure of receiving terminal, the receiving terminal include in figure：Processor 1200, transceiver 1210, Memory 1220, user interface 2120 and bus interface, wherein：
Processor 1200 executes following process for reading the program in memory 1220：
The demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols is received by transceiver 1210, and estimates institute State the channel information of demodulated reference signal；
The transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols is received by transceiver 1210 Reference signal and data-signal, and estimate the channel information of the Phase Tracking reference signal；
Based on the channel information of the Phase Tracking reference signal, the channel information of the demodulated reference signal is mended It repays, is compensated channel information；
The data-signal is demodulated using the compensation channel information.
Wherein, transceiver 1210, for sending and receiving data under the control of processor 1200, and transceiver 1210 wraps Include above-mentioned antenna element or antenna port.
In fig. 12, bus architecture may include the bus and bridge of any number of interconnection, specifically by 1200 generation of processor The various circuits for the memory that the one or more processors and memory 1220 of table represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 1210 can To be multiple element, that is, includes transmitter and receiver, the list for being communicated over a transmission medium with various other devices is provided Member.For different user equipmenies, user interface 2120, which can also be, external the interface for needing equipment is inscribed, and connection is set Standby including but not limited to keypad, display, loud speaker, microphone, control stick etc..
Processor 1200 is responsible for bus architecture and common processing, and memory 1220 can store processor 1200 and exist Execute used data when operation.
Optionally, the Phase Tracking reference signal and the DFT-S-OFDM symbols where data-signal and demodulation ginseng DFT-S-OFDM symbols where examining signal are different symbols.
Optionally, the demodulated reference signal for receiving transmitting terminal and being transmitted on DFT-S-OFDM symbols, and described in estimation The channel information of demodulated reference signal, including：
Receive the demodulated reference signal that is transmitted on DFT-S-OFDM symbols of transmitting terminal, and by the demodulated reference signal into Row frequency-domain transform estimates the channel information of the demodulated reference signal after frequency-domain transform.
Optionally, described to receive the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
Receive the transmitting terminal frequency division multiplexing transmits on DFT-S-OFDM symbols Phase Tracking reference signal and data Signal, and the signal received on the DFT-S-OFDM symbols is subjected to frequency-domain transform, and estimate the phase after frequency-domain transform The channel information of track reference signal.
Optionally, the channel information based on the Phase Tracking reference signal, to the letter of the demodulated reference signal Road information compensates, and is compensated channel information, including：
The channel information of the Phase Tracking reference signal is compared with the channel information of the demodulated reference signal, The DFT-S-OFDM symbols where the Phase Tracking reference signal and data-signal are obtained relative to the demodulated reference signal The phase change information of the DFT-S-OFDM symbols at place, and using the phase change information to the demodulated reference signal Channel information compensates, and is compensated channel information.
Optionally, described to receive the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols reference Signal and data-signal, and estimate the channel information of the Phase Tracking reference signal, including：
Receive the transmitting terminal on multiple DFT-S-OFDM symbols frequency division multiplexing transmit Phase Tracking reference signal and Data-signal, and by the signal received on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols into line frequency Domain converts, and estimates the channel information of the Phase Tracking reference signal after frequency-domain transform in each DFT-S-OFDM symbols；
The channel information based on the Phase Tracking reference signal, to the channel information of the demodulated reference signal into Row compensation, is compensated channel information, including：
The channel information of Phase Tracking reference signal in each DFT-S-OFDM symbols is believed with the demodulation reference Number channel information be compared, obtain each DFT-S-OFDM symbols relative to the DFT-S- where the demodulated reference signal The phase change information of OFDM symbol, and using the corresponding phase change information of each DFT-S-OFDM symbols respectively to the solution It adjusts the channel information of reference signal to compensate, obtains the corresponding compensation channel information of each DFT-S-OFDM symbols；
It is described to demodulate the data-signal using the compensation channel information, including：
Respective data-signal is demodulated using the corresponding compensation channel information of each DFT-S-OFDM symbols.
It should be noted that above-mentioned receiving terminal can be arbitrary in embodiment of the method in the embodiment of the present invention in the present embodiment The receiving terminal of embodiment, the arbitrary embodiment of receiving terminal can be implemented by this in embodiment of the method in the embodiment of the present invention Above-mentioned receiving terminal in example is realized, and reaches identical advantageous effect, and details are not described herein again.
In several embodiments provided herein, it should be understood that disclosed method and apparatus, it can be by other Mode realize.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only For a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine Or it is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed phase Coupling, direct-coupling or communication connection between mutually can be by some interfaces, the INDIRECT COUPLING or communication of device or unit Connection can be electrical, machinery or other forms.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that the independent physics of each unit includes, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can be stored in one and computer-readable deposit In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes receiving/transmission method described in each embodiment of the present invention Part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store The medium of program code.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (22)

1. a kind of transmission method of reference signal, which is characterized in that including：
Transmitting terminal is on the orthogonal frequency division multiplexing access technology DFT-S-OFDM symbols that discrete Fourier transform is spread to receiving terminal Transmit demodulated reference signal；
Transmitting terminal transmits Phase Tracking reference signal in a manner of frequency division multiplexing on DFT-S-OFDM symbols to the receiving terminal And data-signal.
2. the method as described in claim 1, which is characterized in where the Phase Tracking reference signal and data-signal DFT-S-OFDM symbols are different symbols from the DFT-S-OFDM symbols where the demodulated reference signal.
3. the method as described in claim 1, which is characterized in that the transmitting terminal passes on DFT-S-OFDM symbols to receiving terminal Defeated demodulated reference signal, including：
The transmitting terminal maps to demodulated reference signal on N number of subcarrier of DFT-S-OFDM symbols, by N number of subcarrier On demodulated reference signal be converted into time domain and be sent to the receiving terminal, wherein the N is the subcarrier of transmission bandwidth Number.
4. method as claimed in any one of claims 1-3, which is characterized in that the transmitting terminal is on DFT-S-OFDM symbols Phase Tracking reference signal and data-signal are transmitted to the receiving terminal in a manner of frequency division multiplexing, including：
The Phase Tracking reference signal is mapped to M son in N number of subcarrier of DFT-S-OFDM symbols by the transmitting terminal On carrier wave；
The T son that T modulation symbol of data-signal maps in N number of subcarrier in addition to the M subcarrier is carried On wave；
It is concurrent that modulation symbol in Phase Tracking reference signal and the T subcarrier on M subcarrier is converted into time domain Give the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is the subcarrier of transmission bandwidth Number.
5. method as claimed in claim 4, which is characterized in that described that T modulation symbol of data-signal is mapped to the N On T subcarrier in a subcarrier in addition to the M subcarrier, including：
T modulation symbol of data-signal is obtained into T parallel modulation symbols after serioparallel exchange, and parallel to the T Modulation symbol carries out discrete Fourier transform, obtains T output data, the T output data is mapped to N number of sub- load On T subcarrier in wave in addition to the M subcarrier；Or
N number of modulation symbol of data-signal is obtained into N number of parallel modulation symbols after serioparallel exchange, and to described N number of parallel Modulation symbol carries out discrete Fourier transform, obtains N number of output data, and T output number is selected in N number of output data According to the T output data is mapped on T subcarrier in N number of subcarrier in addition to the M subcarrier.
6. a kind of transmission method of reference signal, which is characterized in that including：
Receiving terminal receives the demodulated reference signal that transmitting terminal transmits on DFT-S-OFDM symbols, and estimates the demodulation reference letter Number channel information；
The receiving terminal receives the transmitting terminal Phase Tracking reference signal that frequency division multiplexing transmits on DFT-S-OFDM symbols And data-signal, and estimate the channel information of the Phase Tracking reference signal；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel information of the demodulated reference signal It compensates, is compensated channel information；
The receiving terminal demodulates the data-signal using the compensation channel information.
7. method as claimed in claim 6, which is characterized in where the Phase Tracking reference signal and data-signal DFT-S-OFDM symbols are different symbols from the DFT-S-OFDM symbols where the demodulated reference signal.
8. method as claimed in claim 6, which is characterized in that the receiving terminal receives transmitting terminal on DFT-S-OFDM symbols The demodulated reference signal of transmission, and estimate the channel information of the demodulated reference signal, including：
Receiving terminal receives the demodulated reference signal that is transmitted on DFT-S-OFDM symbols of transmitting terminal, and by the demodulated reference signal Frequency-domain transform is carried out, estimates the channel information of the demodulated reference signal after frequency-domain transform.
9. method as claimed in claim 6, which is characterized in that the receiving terminal receives the transmitting terminal and accorded in DFT-S-OFDM The Phase Tracking reference signal and data-signal of frequency division multiplexing transmission on number, and estimate the channel of the Phase Tracking reference signal Information, including：
The receiving terminal receives the transmitting terminal Phase Tracking reference signal that frequency division multiplexing transmits on DFT-S-OFDM symbols And data-signal, and the signal received on the DFT-S-OFDM symbols is subjected to frequency-domain transform, and after estimating frequency-domain transform Phase Tracking reference signal channel information.
10. the method as described in any one of claim 6-9, which is characterized in that the receiving terminal is based on the Phase Tracking The channel information of reference signal compensates the channel information of the demodulated reference signal, is compensated channel information, packet It includes：
The receiving terminal by the channel information of the channel information of the Phase Tracking reference signal and the demodulated reference signal into Row compares, and the DFT-S-OFDM symbols where obtaining the Phase Tracking reference signal and data-signal are joined relative to the demodulation The phase change information of the DFT-S-OFDM symbols where signal is examined, and using the phase change information to the demodulation reference The channel information of signal compensates, and is compensated channel information.
11. the method as described in any one of claim 6-8, which is characterized in that the receiving terminal receives the transmitting terminal and exists The Phase Tracking reference signal and data-signal that frequency division multiplexing transmits on DFT-S-OFDM symbols, and estimate the Phase Tracking ginseng The channel information of signal is examined, including：
The receiving terminal receives the transmitting terminal Phase Tracking that frequency division multiplexing transmits on multiple DFT-S-OFDM symbols reference Signal and data-signal, and the signal that will be received on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols Frequency-domain transform is carried out, and estimates the channel letter of the Phase Tracking reference signal after frequency-domain transform in each DFT-S-OFDM symbols Breath；
Channel information of the receiving terminal based on the Phase Tracking reference signal, to the channel information of the demodulated reference signal It compensates, is compensated channel information, including：
The receiving terminal by the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols with the demodulation The channel information of reference signal is compared, and obtains each DFT-S-OFDM symbols relative to where the demodulated reference signal The phase change information of DFT-S-OFDM symbols, and it is right respectively using the corresponding phase change information of each DFT-S-OFDM symbols The channel information of the demodulated reference signal compensates, and obtains the corresponding compensation channel information of each DFT-S-OFDM symbols；
The receiving terminal demodulates the data-signal using the compensation channel information, including：
Respective data-signal is demodulated using the corresponding compensation channel information of each DFT-S-OFDM symbols.
12. a kind of transmitting terminal, which is characterized in that including：
First transmission module, for transmitting demodulated reference signal to receiving terminal on DFT-S-OFDM symbols；
Second transmission module, on DFT-S-OFDM symbols in a manner of frequency division multiplexing to the receiving terminal transmit phase with Track reference signal and data-signal.
13. transmitting terminal as claimed in claim 12, which is characterized in where the Phase Tracking reference signal and data-signal DFT-S-OFDM symbols and the DFT-S-OFDM symbols where the demodulated reference signal be different symbols.
14. transmitting terminal as claimed in claim 12, which is characterized in that first transmission module is used for demodulated reference signal It maps on N number of subcarrier of DFT-S-OFDM symbols, the demodulated reference signal on N number of subcarrier is converted into time domain simultaneously It is sent to the receiving terminal, wherein the N is the subcarrier number of transmission bandwidth.
15. the transmitting terminal as described in any one of claim 12-14, which is characterized in that second transmission module, including：
First map unit, for mapping to the Phase Tracking reference signal in N number of subcarrier of DFT-S-OFDM symbols M subcarrier on；
Second map unit, for mapping in N number of subcarrier T modulation symbol of data-signal except described M son On T subcarrier except carrier wave；
Converter unit, for becoming the modulation symbol in the Phase Tracking reference signal and the T subcarrier on M subcarrier It shifts to time domain and is sent to the receiving terminal, wherein the T adds the M to be less than or equal to the N, and the N is transmission bandwidth Subcarrier number.
16. transmitting terminal as claimed in claim 15, which is characterized in that second map unit is used for the T of data-signal A modulation symbol obtains T parallel modulation symbols after serioparallel exchange, and carries out discrete Fu to the T parallel modulation symbols In leaf transformation, obtain T output data, by the T output data map in N number of subcarrier except described M son load On T subcarrier except wave；Or
Second map unit is used to N number of modulation symbol of data-signal obtaining N number of parallel modulation after serioparallel exchange Symbol, and discrete Fourier transform is carried out to N number of parallel modulation symbols, N number of output data is obtained, in N number of output In data select T output data, by the T output data map in N number of subcarrier remove the M subcarrier it On T outer subcarrier.
17. a kind of receiving terminal, which is characterized in that including：
First receiving module, the demodulated reference signal transmitted on DFT-S-OFDM symbols for receiving transmitting terminal, and estimate institute State the channel information of demodulated reference signal；
Second receiving module, for receiving the transmitting terminal Phase Tracking that frequency division multiplexing transmits on DFT-S-OFDM symbols ginseng Signal and data-signal are examined, and estimates the channel information of the Phase Tracking reference signal；
Compensating module is used for the channel information based on the Phase Tracking reference signal, to the channel of the demodulated reference signal Information compensates, and is compensated channel information；
Demodulation module, for demodulating the data-signal using the compensation channel information.
18. receiving terminal as claimed in claim 17, which is characterized in where the Phase Tracking reference signal and data-signal DFT-S-OFDM symbols and the DFT-S-OFDM symbols where the demodulated reference signal be different symbols.
19. receiving terminal as claimed in claim 17, which is characterized in that first receiving module exists for receiving transmitting terminal The demodulated reference signal transmitted on DFT-S-OFDM symbols, and the demodulated reference signal is subjected to frequency-domain transform, estimate frequency domain The channel information of demodulated reference signal after transformation.
20. receiving terminal as claimed in claim 17, which is characterized in that second receiving module is for receiving the transmitting terminal The Phase Tracking reference signal and data-signal that frequency division multiplexing transmits on DFT-S-OFDM symbols, and will be in the DFT-S-OFDM The signal received on symbol carries out frequency-domain transform, and estimates the channel information of the Phase Tracking reference signal after frequency-domain transform.
21. the receiving terminal as described in any one of claim 17-20, which is characterized in that the compensating module is used for will be described The channel information of Phase Tracking reference signal is compared with the channel information of the demodulated reference signal, obtain the phase with DFT-S-OFDM symbols where track reference signal and data-signal are relative to the DFT-S- where the demodulated reference signal The phase change information of OFDM symbol, and the channel information of the demodulated reference signal is carried out using the phase change information Compensation, is compensated channel information.
22. the receiving terminal as described in any one of claim 17-19, which is characterized in that second receiving module is for connecing The transmitting terminal Phase Tracking reference signal that frequency division multiplexing transmits on multiple DFT-S-OFDM symbols and data-signal are received, and The signal received on each DFT-S-OFDM symbols in the multiple DFT-S-OFDM symbols is subjected to frequency-domain transform, and is estimated The channel information of Phase Tracking reference signal after meter frequency-domain transform in each DFT-S-OFDM symbols；
The compensating module is used for the channel information of the Phase Tracking reference signal in each DFT-S-OFDM symbols and institute The channel information for stating demodulated reference signal is compared, and obtains each DFT-S-OFDM symbols relative to the demodulated reference signal The phase change information of the DFT-S-OFDM symbols at place, and use the corresponding phase change information of each DFT-S-OFDM symbols The channel information of the demodulated reference signal is compensated respectively, obtains the corresponding compensation channel of each DFT-S-OFDM symbols Information；
The demodulation module, which is used to demodulate respective data using the corresponding compensation channel information of each DFT-S-OFDM symbols, to be believed Number.
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