WO2012109928A1 - Procédé, dispositif et système pour traiter un signal - Google Patents

Procédé, dispositif et système pour traiter un signal Download PDF

Info

Publication number
WO2012109928A1
WO2012109928A1 PCT/CN2011/082183 CN2011082183W WO2012109928A1 WO 2012109928 A1 WO2012109928 A1 WO 2012109928A1 CN 2011082183 W CN2011082183 W CN 2011082183W WO 2012109928 A1 WO2012109928 A1 WO 2012109928A1
Authority
WO
WIPO (PCT)
Prior art keywords
user
module
domain signal
data information
time domain
Prior art date
Application number
PCT/CN2011/082183
Other languages
English (en)
Chinese (zh)
Inventor
李萍
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012109928A1 publication Critical patent/WO2012109928A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • 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
    • H04L27/2613—Structure of the reference signals

Definitions

  • LTE Long-Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • 3G Three-generation
  • LTE has more technical advantages, such as higher user data rate, packet transmission, system delay reduction, system capacity and coverage improvement, and lower operating costs.
  • LTE downlink transmission scheme adopts orthogonal frequency division multiplexing (Orthogonal Frequency Division)
  • OFDM Multiplexing
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • SC-FDMA SC-FDMA system
  • DFT-S-OFDM system DFT-S-OFDM system
  • IFFT inverse fast Fourier transform
  • a guard interval is inserted between each OFDM symbol, and the length of the guard interval is generally larger than the maximum delay spread in the wireless channel, so that the multipath component of one symbol is Will not cause interference to the next symbol.
  • the guard interval is a Cyclic Preamble (CP), which copies the symbols cyclically, that is, the samples in a period of time after each OFDM symbol are copied to the front of the OFDM symbol to form a prefix, and there is no discontinuity at the handover point. .
  • CP Cyclic Preamble
  • CP Cyclic Preamble
  • Increasing the guard interval between symbols increases the waveform length of the symbol.
  • the longer the CP the greater the allowable user delay, the more user types and application scenarios are accommodated;
  • the CP occupies a certain transmission bandwidth.
  • the longer the CP the larger the system overhead.
  • the sender selects the same CP length according to different user types. Therefore, after the length of the CP in the frame structure of the existing LTE protocol is balanced by various factors, two CP lengths, a regular CP and an extended CP are specified. , where the regular CP supports more than 1km (km, km) of extended delay, and the extended CP supports more than 5km of extended delay.
  • the above-mentioned trade-off design is difficult to demodulate correctly for a very long distance of 5 to 25 km.
  • a signal processing method including: generating a pilot code according to a length of a frequency domain resource allocated for a user; mapping a pilot code and user data information to a resource block allocated for a user
  • the number of generated user modulated data symbols is ⁇ 1 ⁇ ( ⁇ ⁇ -2 ⁇ ⁇ / ⁇ , where N symbd is the number of orthogonal frequency division multiplexing OFDM symbols in one subframe, and Ml is the frequency allocated for the user
  • the length of the domain resource, p is an integer, p ⁇ l, 2xC is the number of OFDM symbols not used to transmit user data information; transform the mapped frequency domain signal into a time domain signal, and increase the cyclic prefix; send the time domain signal
  • the cyclic prefix is added to the time domain signal according to the following formula: CP ⁇ pxC +ip- xN , where ⁇ is the first cyclic prefix length, is the second cyclic prefix length, p is an
  • mapping the pilot code and the user data information to the resource block allocated to the user includes: mapping the pilot code and the user data information to the same sub-
  • the method further includes: transforming the time-domain signal to the frequency domain signal of the user-modulated symbol.
  • a signal processing method including: receiving a time domain signal, wherein a time domain signal carries a cyclic prefix; removing a cyclic prefix in a time domain signal according to a first cyclic prefix length; The time domain signal of the cyclic prefix is transformed into a frequency domain signal; the pilot code and the user's data information are acquired on the resource block allocated for the user; and the user data information is frequency-domain demodulated according to the pilot code.
  • frequency domain demodulation of the user data information includes: performing channel estimation according to the pilot code and the local pilot information to obtain a pilot bit channel estimation value; and acquiring the user user according to the pilot bit channel estimation value.
  • the method further includes: removing non-user data bits in the demodulated user data information.
  • a signal processing apparatus comprising: a generating module, configured to generate a pilot code according to a length of a resource allocated for a user; and a mapping module configured to map the pilot code and the user data Information to the resource block allocated to the user, wherein the number of generated user modulated data symbols is Mlx (N symbol -2x C)/p , where N symbd is the number of orthogonal frequency division multiplexing OFDM symbols in one subframe Ml is the length of the frequency domain resource allocated for the user, p is an integer, p ⁇ l, 2xC is the number of OFDM symbols not used to transmit user data information; the transform module is configured to convert the mapped frequency domain signal into Time domain signal, and increase the cyclic prefix; the sending module is set to send the time domain signal.
  • a signal processing apparatus including: a receiving module, configured to receive a time domain signal, wherein the time domain signal carries a cyclic prefix; and the removing module is set to follow a first cyclic prefix length And removing a cyclic prefix in the time domain signal; a transform module, configured to convert a time domain signal that removes the cyclic prefix into a frequency domain signal; and an obtaining module configured to acquire a pilot code and a resource block allocated for the user The user's data information; the demodulation module is configured to perform frequency domain demodulation on the user's data information according to the pilot code.
  • a signal processing system including a first signal processing device and a second signal processing device, wherein the first signal processing device includes: a generating module configured to follow resources allocated for a user Length, generating a pilot code; a mapping module, configured to map the pilot code and the user's data information to the resource block allocated to the user, wherein the number of generated user modulated data symbols is ⁇ 1 ⁇ ( ⁇ ⁇ -2 ⁇ 0/ ⁇ , where ⁇ is the number of orthogonal frequency division multiplexing OFDM symbols in one subframe, M1 is the length of the frequency domain resource allocated for the user, p is an integer, p ⁇ l, 2xC is not used to transmit user data information
  • the number of OFDM symbols; the first transform module is configured to convert the mapped frequency domain signal into a time domain signal and add a cyclic prefix; the sending module is configured to transmit the time domain signal; and the second signal processing device comprises: receiving a module, configured to receive a time domain signal
  • the sender constructs different CP lengths according to different user types, and solves the problem that the same CP length is selected by different user types on the transmitting end in the prior art, thereby causing super far
  • the distance (5 ⁇ 25km) is difficult to correctly demodulate, so that the correct demodulation of ultra-long distance (5 ⁇ 25km) can be realized, and the coexistence of users with different coverage areas can be realized.
  • FIG. 1 is a flow chart of a signal processing method according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a signal processing method according to a preferred embodiment of the present invention
  • FIG. 3 is a second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a time domain plus cyclic prefix of a system transmitter according to a preferred embodiment 2 of the present invention;
  • FIG. 5 is a pilot and data of a system transmitter according to a preferred embodiment 2 of the present invention
  • FIG. 6 is a flow chart of a signal processing method according to an embodiment of the present invention
  • FIG. 7 is a flowchart of a signal processing method according to a preferred embodiment 3 of the present invention
  • FIG. 8 is a flowchart of a signal processing method according to a preferred embodiment of the present invention
  • FIG. 9 is a block diagram showing the structure of a signal processing apparatus according to an embodiment of the present invention
  • FIG. 10 is a block diagram showing the structure of a signal processing system according to an embodiment of the present invention
  • FIG. 11 is a block diagram showing a structure of a signal processing system according to an embodiment of the present invention
  • Step S102 Generate a pilot code according to a length of a frequency domain resource allocated for the user.
  • Step S104 Mapping the pilot code and the user data information to the resource block allocated to the user, where the generated number of user modulation data symbols is ⁇ 1 ⁇ ( ⁇ ⁇ -2 ⁇ ⁇ / ⁇ , where is positive in one subframe Frequency division multiplexing
  • the number of OFDM symbols, M1 is the length of the frequency domain resource allocated to the user
  • p is an integer
  • p ⁇ l is an integer
  • 2xC is the number of OFDM symbols not used to transmit user data information.
  • Step S106 converting the mapped frequency domain signal into a time domain signal, and adding a cyclic prefix.
  • Step S108 transmitting a time domain signal.
  • the sender selects the same CP length according to different user types, and the length of the CP in the frame structure of the existing LTE protocol only supports the extended delay of more than 5 km, which makes it difficult for the ultra long distance (5 to 25 km). Correct demodulation.
  • the transmitting end constructs different CP lengths according to different user types, so that the correct demodulation of the ultra long distance (5 ⁇ 25km) can be realized, thereby realizing the coexistence of users with different coverage areas.
  • the cyclic prefix is added to the time domain signal according to the following formula: CP ⁇ pxC +ip- xN , where, . ⁇ is the first loop prefix length, .
  • mapping the pilot code and the user's data information to the resource block allocated for the user comprises: mapping the pilot code and the user's data information to the same subcarrier.
  • the method before mapping the pilot code and the data information of the user to the resource block allocated for the user, the method further includes: transforming the time-domain signal to the frequency domain signal of the user-modulated symbol.
  • the pilot code of (Ml) the generation of the pilot code can refer to the generation mode of the Zadoff-Chu code in the 3Gpp protocol TS 36.211, and the generated pilot code of length M1 is sent to the resource mapping module.
  • the user ml is mapped on a partial OFDM symbol within one subframe, the pilot bit information and the user data information are mapped onto the allocated RB, and the time domain resources of the unallocated frequency domain resource and the unmapped information are padded with zero.
  • the frequency domain signal subjected to data and pilot mapping is subjected to N-point inverse Fourier transform to the time domain, and the cyclic prefix (CP, length is CP 2 ) is added according to the new time domain signal, CP ⁇ pxC ⁇ +ip- ⁇ xN Wherein, an integer of p ⁇ l, generates a time domain signal to be transmitted, and finally outputs the time domain signal to the transmitting antenna for transmission.
  • CP length is CP 2
  • FIG. 3 is a flow chart of a signal processing method according to a preferred embodiment 2 of the present invention.
  • the pilot code For the user m2 (existing system user), generate the pilot code of the allocated resource length (M2).
  • the generation of the pilot code can refer to the generation method of the Zadoff-Chu code in the 3Gpp protocol TS 36.211, and the generated length is M2.
  • the pilot code is sent to the resource mapping module.
  • the user-modulated symbol is pre-coded, and the discrete Fourier transform of the M2 point is performed, and is sent to the resource mapping module together with the generated pilot code sequence, wherein the number of generated modulated data symbols is M2x (N symbd -2),
  • N symbol 14 for the regular CP
  • N symbd 12 for the extended CP.
  • 4 is a schematic diagram of a time domain plus cyclic prefix of a system transmitter in accordance with a preferred embodiment 2 of the present invention.
  • 5 is a schematic diagram of pilot and data resource multiplexing of a system transmitter in accordance with a preferred embodiment 2 of the present invention.
  • FIG. 6 is a second flowchart of a signal processing method according to an embodiment of the present invention. As shown in FIG. 6
  • Step S602 receiving a time domain signal, where the time domain signal carries a cyclic prefix.
  • Step S604 removing the cyclic prefix in the time domain signal according to the first cyclic prefix length.
  • Step S606 transforming the time domain signal with the cyclic prefix removed into a frequency domain signal.
  • Step S608, acquiring a pilot code and data information of the user on the resource block allocated for the user.
  • Step S610 performing frequency domain demodulation on the data information of the user according to the pilot code.
  • performing frequency domain demodulation on the data information of the user according to the pilot code comprises: performing channel estimation according to the pilot code and the local pilot information to obtain a pilot bit channel estimation value; and obtaining the pilot bit channel estimation value according to the pilot bit channel estimation value Channel estimation value of the user data bit of the user; frequency domain demodulation of the user data information according to the channel estimation value of the user data bit.
  • the method includes: removing non-user data bits in the demodulated user data information.
  • FIG. 7 is a flowchart of a signal processing method according to a preferred embodiment 3 of the present invention.
  • the data of the transmitting end through the wireless channel is received, and the cyclic prefix of the received data is removed according to the originating N symbd OFDM symbols and the added cyclic prefix length CP.
  • the time domain signal removed by the cyclic prefix is N-point Fourier transformed into the frequency domain.
  • the pilot information of the received far-reaching user, the user data information, and the pilot information and the user data information of the received regular user are extracted according to the location of the frequency domain resource and the location of the data symbol mapped by the user ml and the user m2, respectively.
  • channel estimation is performed, channel estimation of pilot bits is performed according to the received pilot information and local pilot information, and channel characteristics of the pilot bits are calculated; channel estimation values of user data bits are interpolated or pushed by pilot channel channel estimation values, etc.
  • the method is simple and easy to implement, but the method is not limited thereto, and other methods for estimating the data bit channel estimation by the pilot bit channel can be used.
  • the frequency domain demodulation of the user information is accomplished using the channel estimates of the user receiving the frequency domain data and the user data bits. Demodulation methods include MMSE equalization, MF equalization, ZF equalization, and the like.
  • the cyclic prefix CPJ user is used, and the information of the non-user data bits needs to be removed after demodulation; for the user whose cyclic prefix is CP, the demodulated data is user data, and all data is reserved.
  • FIG. 8 is a block diagram showing the structure of a signal processing apparatus according to an embodiment of the present invention. As shown in FIG. 8, a generating module 82, a mapping module 84, a transforming module 86, and a transmitting module 88 are included. The structure is described in detail below.
  • the generating module 82 is configured to generate a pilot code according to the length of the resource allocated for the user.
  • the mapping module 84 is connected to the generating module 82, and configured to allocate the pilot code generated by the mapping generating module 82 and the user data information to the user.
  • the number of user modulated data symbols generated is ⁇ 1 ⁇ ( ⁇ ⁇ -2 ⁇ ⁇ / ⁇ , where N sjmbd is the number of orthogonal frequency division multiplexing OFDM symbols in one subframe, and Ml is The length of the frequency domain resource allocated by the user, P is an integer, p ⁇ l, 2xC is the number of OFDM symbols not used to transmit user data information;
  • the transform module 86 is connected to the mapping module 84, and is set to map the mapping module 84.
  • the frequency domain signal is transformed into a time domain signal, and the cyclic prefix is added.
  • the sending module 88 is connected to the transform module 86 and configured to send the time domain signal transformed by the transform module 86.
  • the present invention provides a system transmitter with super-far coverage, which can complete the transmission of user data.
  • the pilot code generation module generates the allocated resources.
  • the pilot code of the source length is sent to the resource mapping module by the generated pilot code of length M.
  • the user data generating module the user-modulated symbol is pre-coded, the discrete Fourier transform of the M1 point is performed, and the generation is performed.
  • the pilot code sequence is sent to the resource mapping module together, where the number of generated modulated data symbols is Mlx (N symbol -2x C)/p , where N symbd is the number of OFDM symbols in one subframe, and p is an integer. P ⁇ l,
  • the resource mapping module, the pilot bit information and the user data information are mapped to the allocated RB, and the time domain resources of the unallocated frequency domain resource and the unmapped information are padded with zeros.
  • the time domain signal generating module converts the time domain of the frequency domain signal subjected to data and pilot mapping, and adds a cyclic prefix (CP 2 ) to the time domain signal according to a new method, CP ⁇ pxC ⁇ +ip- ⁇ xN, where p An integer of ⁇ l is output to the transmitting antenna for transmission.
  • FIG. 9 is a block diagram showing the structure of a signal processing apparatus according to an embodiment of the present invention. As shown in FIG. 9, the receiving module 92, the removing module 94, the transforming module 96, the obtaining module 98, and the demodulating module 910 are included. The structure is described in detail below.
  • the receiving module 92 is configured to receive a time domain signal, wherein the time domain signal carries a cyclic prefix, and the removing module 94 is connected to the receiving module 92, and is configured to remove the time domain signal received by the receiving module 92 according to the first cyclic prefix length.
  • a cyclic prefix a transform module 96, coupled to the removal module 94, configured to convert the time domain signal of the removal module 94 to remove the cyclic prefix into a frequency domain signal
  • the acquisition module 98 coupled to the transformation module 96, configured to The transform module 96 converts the resource block allocated to the user, and obtains the pilot code and the user's data information.
  • the demodulation module 910 is connected to the obtaining module 98, and is configured to acquire the pilot code according to the acquisition module 98.
  • the acquired user's data information is subjected to frequency domain demodulation.
  • the implementation process of the embodiment of the present invention will be described in detail below with reference to examples.
  • Preferred Embodiment 5 The present invention provides a system receiver with ultra-long coverage capable of performing reception and demodulation of user data.
  • the cyclic prefix removal module receives the data of the wireless channel sent by the transmitting antenna, and removes the cyclic prefix of the received data according to the CP.
  • the time-frequency domain transform module performs the N-point Fourier transform on the time domain signal removed by the cyclic prefix into the frequency domain, and sends it to the frequency domain separation module.
  • the frequency domain separation module extracts the pilot information of the received user and receives the user data information according to the frequency domain resource location mapped by the user.
  • the channel estimation module calculates channel characteristics of the pilot bits according to the received pilot information and the local pilot information, and calculates channel characteristics of the pilot bits; the channel estimation values of the user data bits are obtained by using pilot bit channel estimation values.
  • the demodulation module performs frequency domain demodulation of the user information by using a channel estimation value of the user receiving the frequency domain data and the user data bit.
  • FIG. 10 is a structural block diagram of a signal processing system including a first signal processing device 102 and a second signal processing device 104, wherein the first signal processing device 102 includes, according to an embodiment of the present invention,
  • the generating module 1022, the mapping module 1024, the transforming module 1026 and the transmitting module 1028, the second signal processing device 104 includes a receiving module 1042, a removing module 1044, a transforming module 1046, an obtaining module 1048, and a demodulating module 10410.
  • the structure is described in detail below.
  • the generating module 1022 is configured to generate a pilot code according to the length of the resource allocated for the user.
  • the mapping module 1024 is connected to the generating module 1022, and is configured to allocate the pilot code generated by the mapping generating module 1022 and the user data information to the user.
  • the number of user modulated data symbols generated is ⁇ 1 ⁇ ( ⁇ ⁇ -2 ⁇ 0/ ⁇ , where ⁇ 85 ⁇ is the number of orthogonal frequency division multiplexing OFDM symbols in one subframe, and Ml is The length of the frequency domain resource allocated by the user, p is an integer, p ⁇ l, 2xC is the number of OFDM symbols not used to transmit user data information;
  • the first transform module 1026 is connected to the mapping module 1024, and is set to the mapping module 1024.
  • the mapped frequency domain signal is transformed into a time domain signal, and a cyclic prefix is added;
  • the sending module 1028 is connected to the transform module 1026, and configured to send the time domain signal transformed by the transform module 1026.
  • the receiving module 1042 is configured to receive the time domain signal,
  • the time domain signal carries a cyclic prefix;
  • the removing module 1044 is connected to the receiving module 1042, and is configured to remove the receiving mode according to the first cyclic prefix length.
  • the cyclic prefix in the time domain signal received by the block 1042 The cyclic prefix in the time domain signal received by the block 1042; the second transform module 1046, coupled to the removing module 1044, configured to convert the time domain signal of the removing module 1044 to remove the cyclic prefix into a frequency domain signal; the obtaining module 1048, Connected to the transform module 1046, configured to acquire the pilot code and the user's data information on the resource block allocated by the transform module 1046 for the user; the demodulation module 10410, connected to the obtaining module 1048, configured to obtain according to the obtaining module 1048 The pilot code is used to perform frequency domain demodulation on the data information of the user acquired by the obtaining module 1048.
  • the implementation process of the embodiment of the present invention will be described in detail below with reference to examples.
  • FIG. 11 is a block diagram showing the structure of a signal processing system in accordance with a preferred embodiment of the present invention.
  • the invention provides a signal processing system with super far coverage, comprising a pilot code generation module, a user data generation module, a resource mapping module, a time domain signal generation module, a cyclic prefix removal module, a time frequency domain transformation module, and a frequency domain separation. Module, channel estimation module, demodulation module. This will be described in detail below.
  • the pilot code generating module is configured to generate a pilot code of the allocated resource length, and send the generated pilot code to the resource mapping module.
  • the user data generating module is configured to pre-code the user-modulated symbols and send them to the resource mapping module.
  • the resource mapping module is configured to map the pilot bit information and the user data bit information to the allocated RB, and the time domain resources of the unallocated frequency domain resource and the unmapped information are padded with zeros.
  • the time domain signal generating module is configured to transform the time domain of the frequency domain signal subjected to data and pilot mapping, and add a cyclic prefix to the time domain signal according to a new method, which is recorded as CP 2 , and is output to the transmitting antenna for transmission.
  • the cyclic prefix removal module is configured to receive data of the wireless channel transmitted by the transmitting antenna and remove the cyclic prefix.
  • the time-frequency domain transform module is configured to transform the time domain signal removed by the cyclic prefix into the frequency domain, and send it to the frequency domain separation module.
  • the frequency domain separation module is configured to extract pilot information of the received user and receive user data information according to the frequency domain resource location of the user.
  • the channel estimation module is configured to perform channel estimation of the pilot bit according to the received pilot information and the local pilot information; the channel estimation value of the user data bit is obtained by using the pilot bit channel estimation value.
  • the demodulation module is configured to perform demodulation of the user information using the channel estimation values of the user receiving the frequency domain data and the user data bits.
  • the transmitting end constructs different CP lengths according to different user types, so that the correct demodulation of the ultra long distance (5 ⁇ 25km) can be realized, thereby realizing the coexistence of users with different coverage areas.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un système pour traiter un signal. Le procédé comprend : la génération d'un code pilote en fonction de la longueur d'une ressource du domaine de fréquence attribuée à un utilisateur ; le mappage du code pilote et des informations de données d'utilisateur sur le bloc de ressources attribué à l'utilisateur, un symbole généré de données modulées d'utilisateur étant dénombré comme M1×(Nsymbole-2×C)/p, Nsymbole étant le nombre des symboles de multiplexage par répartition orthogonale de la fréquence (OFDM) dans une sous-trame, M1 étant la longueur de la ressource du domaine de fréquence attribuée à l'utilisateur, p étant un entier et p≧1, et Z×C étant le nombre des symboles OFDM non destinés à être utilisés dans la transmission des informations de données d'utilisateur ; la transformation d'un signal du domaine de fréquence mappé en un signal du domaine temporel, l'ajout de préambules cycliques supplémentaires ; et la transmission du signal du domaine temporel. L'invention permet la démodulation sur une distance étendue (de 5 à 25 km), permettant ainsi la coexistence des utilisateurs ayant des portées de couverture différentes.
PCT/CN2011/082183 2011-02-15 2011-11-15 Procédé, dispositif et système pour traiter un signal WO2012109928A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110038509.1A CN102638433B (zh) 2011-02-15 2011-02-15 信号处理方法、装置及系统
CN201110038509.1 2011-02-15

Publications (1)

Publication Number Publication Date
WO2012109928A1 true WO2012109928A1 (fr) 2012-08-23

Family

ID=46622681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/082183 WO2012109928A1 (fr) 2011-02-15 2011-11-15 Procédé, dispositif et système pour traiter un signal

Country Status (2)

Country Link
CN (1) CN102638433B (fr)
WO (1) WO2012109928A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105007240B (zh) * 2015-05-29 2018-02-27 华南理工大学 一种频域导频复用技术的信号失真重建方法及装置
CN107027189B (zh) * 2016-01-30 2019-12-24 上海朗帛通信技术有限公司 一种调度方法和装置
CN107623652B (zh) * 2016-07-14 2022-01-11 中兴通讯股份有限公司 一种数据传输方法及装置
CN107770810A (zh) * 2016-08-22 2018-03-06 中兴通讯股份有限公司 一种灵活配置循环前缀的方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1466289A (zh) * 2002-06-14 2004-01-07 ���ǵ�����ʽ���� 正交频分复用发射机及在该发射机中设定公知序列的方法
CN1980114A (zh) * 2005-11-30 2007-06-13 中国科学院上海微系统与信息技术研究所 一种信道估计的发射、接收装置及其方法
CN101091342A (zh) * 2005-01-06 2007-12-19 富士通株式会社 无线通信系统
CN101267421A (zh) * 2008-04-21 2008-09-17 上海大学 一种ofdm时变信道测计方法
CN101997799A (zh) * 2009-08-20 2011-03-30 石强 基于滤波器组的ofdm信道估计方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1466289A (zh) * 2002-06-14 2004-01-07 ���ǵ�����ʽ���� 正交频分复用发射机及在该发射机中设定公知序列的方法
CN101091342A (zh) * 2005-01-06 2007-12-19 富士通株式会社 无线通信系统
CN1980114A (zh) * 2005-11-30 2007-06-13 中国科学院上海微系统与信息技术研究所 一种信道估计的发射、接收装置及其方法
CN101267421A (zh) * 2008-04-21 2008-09-17 上海大学 一种ofdm时变信道测计方法
CN101997799A (zh) * 2009-08-20 2011-03-30 石强 基于滤波器组的ofdm信道估计方法

Also Published As

Publication number Publication date
CN102638433A (zh) 2012-08-15
CN102638433B (zh) 2015-01-28

Similar Documents

Publication Publication Date Title
US11824629B2 (en) Method and a system for transmitting DFT-s-OFDM symbols
KR101460107B1 (ko) 무선 통신 시스템에서 순환 전치 길이 변경 방법 및 이를 위한 시스템
US20200374176A1 (en) Method and system for providing code cover to ofdm symbols in multiple user system
JP6122154B2 (ja) パルス整形直交周波数分割多重化
CN105991257B (zh) 基于滤波器组的信号生成、发送和接收方法及其装置
KR101282817B1 (ko) 무선 통신 시스템의 레퍼런스 신호 및 데이터에 대한 효율적 멀티플렉싱
WO2018018417A1 (fr) Procédé et appareil de transmission d'informations
WO2018116788A1 (fr) Appareil de station de base, dispositif de terminal, procédé de communication et circuit intégré
WO2018123468A1 (fr) Dispositif de station de base, dispositif terminal, procédé de communication et circuit intégré
WO2017035808A1 (fr) Procédé et dispositif pour émettre ou recevoir un signal
CN107888533B (zh) 一种数据处理方法、装置和系统
JP2004153676A (ja) 通信装置、送信機および受信機
WO2013044492A1 (fr) Procédé de compression de signal en bande de base de liaison montante, procédé de décompression, dispositif et système
WO2014206348A1 (fr) Procédé et dispositif de transmission d'un signal de synchronisation dans un système fbmc
WO2013028855A2 (fr) Systèmes et procédés de détection de transmissions sur la base de transformées de fourier rapides en 32 et en 64 bits
WO2014173292A1 (fr) Procédé et dispositif de transmission de signal pilote
WO2012130087A1 (fr) Système de communication sans film et procédé de communication correspondant
WO2012109928A1 (fr) Procédé, dispositif et système pour traiter un signal
WO2017059719A1 (fr) Procédé et dispositif de transmission de données
CN104333527A (zh) 一种飞机用cofdm调制解调方法
WO2012024913A1 (fr) Procédé, appareil et système d'envoi, de réception et de fourniture de données
WO2014117622A1 (fr) Procédés et appareils d'envoi et de réception de données
CN109691048B (zh) 将发送数据格式化为帧结构的发送机和方法
CN106789801B (zh) Fbmc导频信道估计方法及装置
CN108156108B (zh) 一种ofdm符号的起点位置确定方法及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11858970

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11858970

Country of ref document: EP

Kind code of ref document: A1