WO2015168939A1 - Procédé et dispositif de commande de rapport puissance de crête/puissance moyenne, et unité de bande de base - Google Patents

Procédé et dispositif de commande de rapport puissance de crête/puissance moyenne, et unité de bande de base Download PDF

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Publication number
WO2015168939A1
WO2015168939A1 PCT/CN2014/077158 CN2014077158W WO2015168939A1 WO 2015168939 A1 WO2015168939 A1 WO 2015168939A1 CN 2014077158 W CN2014077158 W CN 2014077158W WO 2015168939 A1 WO2015168939 A1 WO 2015168939A1
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Prior art keywords
power
virtual
dedicated physical
pilot symbol
pilot
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PCT/CN2014/077158
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English (en)
Chinese (zh)
Inventor
王新征
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华为技术有限公司
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Priority to PCT/CN2014/077158 priority Critical patent/WO2015168939A1/fr
Priority to CN201480009063.1A priority patent/CN105409180B/zh
Publication of WO2015168939A1 publication Critical patent/WO2015168939A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a device, and a baseband unit for controlling a peak average power ratio. Background technique
  • the general mobile communication system (English: Universal Mobile Telecommunications System, UMTS for short) transmits the signal of the public channel of the local area and all the activated version 99 of the cell (English: Release 99, referred to as R99).
  • Signal of the physical channel (English: Dedicated Physical Channel, DPCH for short).
  • Each user's DPCH has a chip offset (English: chipoffset) parameter.
  • the chipoffset parameter characterizes the start of a frame in the DPCH.
  • the value of the chipoffset parameter can be expressed as 256N (N is an integer, and 0 ⁇ N ⁇ 149).
  • the chipoffset parameters of multiple DPCHs are aligned.
  • the chipoffset parameter alignment is defined as the chipoffset of multiple DPCHs being equal or the remainder after chipoffset divided by 2560 is equal.
  • the downlink channel slot diagram of the Node B under UMTS is as shown in Figure 1.
  • the pilot domains of all DPCHs are aligned in time, and all pilot symbols are known in advance, although different users use them.
  • Different spreading codes but the first chip of the spreading code is always +1, so the pilot symbols of all DPCH pilot fields (English: Pilot Symbol) must be added in phase, which will result in higher Peak-to-Average Power Ratio (PAPR).
  • PAPR Peak-to-Average Power Ratio
  • the PAPR of the signal is greatly improved.
  • the power consumption, volume and cost of the amplifier are the bottlenecks of UMTS.
  • the UMTS base station side should try to avoid chipoffset alignment.
  • the downlink traffic of the community is getting larger and larger, and the number of DPCHs is increasing, but the available chipoffset parameters are limited.
  • the time division multiplexing (English: Time Division Multiplexing, TDM) scheduling application requires the chipoffset parameter of the downlink DPCH. Must be aligned, which greatly increases the PAPR of the downlink transmit signal.
  • the UMTS downlink requires the application of PAPR reduction techniques. It is generally preferred to reduce the PAPR in the middle RF, because the signal sampling rate in the middle RF band is higher, closer to the analog signal.
  • Embodiments of the present invention provide a method, a device, and a baseband unit for controlling a peak-to-average power ratio, which are used to reduce a peak-to-average power ratio in a baseband signal, and to avoid a problem in which a peak signal in a medium-frequency radio wave burns a power amplifier.
  • a first aspect of the present invention provides a method for controlling a peak-to-average power ratio, including: determining, in a M dedicated physical channel of a cell, N pilot domains aligned at a first time, the first time alignment characterization pilot The time at which the domain appears in the frame of the dedicated physical channel is the same, where N,
  • M is a positive integer
  • the actual chip corresponding to the first moment is superimposed with the generated virtual chip.
  • the method before determining the N pilot domains at the first moment in the M dedicated physical channels of the cell, the method further includes:
  • the method further includes:
  • the virtual pilot symbols corresponding to each pilot symbol are generated, including:
  • the virtual pilot symbols including the inverse of the in-phase carrier component and the inverse of the orthogonal carrier component.
  • the virtual pilot symbols corresponding to each pilot symbol are generated, including:
  • a virtual pilot symbol having a power opposite to the pilot symbol and having a predetermined power is generated.
  • the virtual pilot symbols corresponding to each pilot symbol are generated, including:
  • the virtual pilot symbols corresponding to each pilot symbol are generated, including:
  • N is the total number of spreading codes that are orthogonal to the spreading codes used by the other downlink channels in the cell and are not used.
  • N is a total number of spreading codes that are orthogonal to the spreading codes used by the other downlink channels in the cell and are not used, and a preset maximum number of virtual pilot symbols. The minimum value in .
  • a second aspect of the present invention provides an apparatus for controlling a peak average power ratio, including: a determining module, configured to determine, in a M dedicated physical channel of a cell, N pilot domains aligned at a first time, the first The time alignment characterizing the pilot domain is the same at the moment of occurrence of the frame of the dedicated physical channel, where N and M are positive integers;
  • a generating module configured to acquire pilot symbols corresponding to each pilot domain in the N pilot domains, and generate virtual pilot symbols corresponding to each pilot symbol, where the pilot symbols and corresponding virtual guides The frequency symbols are opposite to each other;
  • a processing module configured to perform a spread spectrum scrambling process on each generated virtual pilot symbol, and generate a virtual chip corresponding to each virtual pilot symbol;
  • the method further includes:
  • an acquiring module configured to acquire M dedicated physical channels aligned in a chip offset in the cell, where the chip offset alignment indicates that the start time of the frame of the dedicated physical channel is the same or the start time is different by an integer multiple;
  • the determining module is configured to determine that M is greater than or equal to the first preset threshold.
  • the acquiring module is further configured to acquire a sum of powers of the M dedicated physical channels
  • the determining module is further configured to determine that a sum of powers of the M dedicated physical channels is greater than or equal to a second preset threshold.
  • the generating module is specifically configured to determine an in-phase carrier component and an orthogonal carrier component of the pilot symbol, and generate each pilot symbol corresponding to the in-phase The inverse of the carrier component and the inverse of the orthogonal carrier component of the virtual pilot symbol.
  • the generating module is specifically configured to generate a virtual pilot symbol having a power that is opposite to the pilot symbol and whose power is a preset power.
  • the generating module is specifically configured to determine a dedicated physical channel having the maximum power among the powers of the M dedicated physical channels, and obtain the maximum power a power variation amount between two adjacent time slots of the dedicated physical channel; determining a sum of the preset power and the power variation amount as a power of the virtual pilot symbol; generating a virtual pilot symbol corresponding to each pilot symbol, The virtual pilot symbols and the pilot symbols are opposite to each other, and the power of the virtual pilot symbols is a determined power.
  • the generating module is specifically configured to determine a dedicated physical channel having the maximum power among the powers of the M dedicated physical channels, and obtain the maximum power The amount of power change between two adjacent time slots of the dedicated physical channel; determining the sum of the preset set power and the power change amount as the power of the virtual pilot symbol; generating a virtual guide corresponding to each pilot symbol a frequency symbol, the virtual pilot symbol and the pilot symbol are opposite to each other, and a power of a part of the virtual pilot symbols in the virtual pilot symbol is a preset power, and a power of another part of the virtual pilot symbol is determined. Power.
  • An embodiment of the present invention provides a method for controlling a peak average power ratio, determining N pilot domains aligned at a first time in M dedicated physical channels of a cell, and acquiring each pilot domain in N pilot domains. Corresponding pilot symbols, and generating virtual pilot symbols corresponding to each pilot symbol; performing spread spectrum scrambling processing on each generated virtual pilot symbol to generate corresponding virtual pilot symbols respectively a virtual chip; superimposing the actual chip corresponding to the first moment and the generated virtual chip.
  • the PAPR in the baseband signal can be effectively reduced, thereby reducing the calculation pressure of reducing the PAPR in the middle radio frequency, providing effective protection for the power amplifier, and improving the security and stability of the entire UMTS.
  • FIG. 2 is a flowchart of a method for controlling a peak average power ratio according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of determining a virtual pilot symbol based on an I and Q coordinate system according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an apparatus for controlling a peak average power ratio according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of another apparatus for controlling a peak average power ratio according to an embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a common method for reducing the peak-to-average power ratio is performed in a remote radio unit (English: Remote Radio Unit, RRU), that is, reducing the PAPR in the middle radio frequency stage, but the method in the embodiment of the present invention It is applied to the baseband unit (BBU) to correct the chip sequence sent to the RRU in the BBU, thereby reducing the PAPR in the chip sequence sent by the BBU to the RRU.
  • RRU Remote Radio Unit
  • FIG. 2 is a flowchart of a method for controlling a peak average power ratio according to an embodiment of the present invention, where the method includes:
  • S201 Determine, in the M dedicated physical channels of the cell, N pilot domains that are aligned at the first time; S202, acquire pilot symbols corresponding to each pilot domain in the N pilot domains, and generate each pilot. Virtual pilot symbols corresponding to the respective symbols; S203, performing a spread spectrum scrambling process on each generated virtual pilot symbol, and generating a virtual chip corresponding to each virtual pilot symbol;
  • the cell needs to be acquired before determining the N pilot domains aligned at the first time.
  • the chipoffset of the dedicated physical channel which represents the start of the frame in the dedicated physical channel.
  • the chipoffset represents the start time of the frame in the DPCH corresponding to the user.
  • the start time of the frame of the partial DPCH is the same, if the frame of the DPCH is not the same at the beginning time,
  • the chipoffset alignment here is defined as chipoffset equal, or the remainder after chipoffset divided by 2560 is equal.
  • the aligned chipoffset is determined in the acquired chipoffset, and the total number of all dedicated physical channels corresponding to the aligned chipoffset is counted, that is, M dedicated physical channels, where the size of M determines whether the chip sequence in the BBU is determined.
  • the correction is performed, that is, when M is greater than or equal to the first preset threshold, the chip sequence is corrected; if M is smaller than the first preset threshold, the chip sequence does not need to be corrected.
  • whether the chip sequence is corrected may be determined by combining the power of the dedicated physical channel.
  • the sum of the powers of the M dedicated physical channels is further acquired, and then it is determined whether the sum of the powers of the M dedicated physical channels is greater than or equal to the second. If the sum of the powers of the M dedicated physical channels is greater than or equal to the second preset threshold, the chip sequence needs to be corrected; if the sum of the powers of the M dedicated physical channels is less than the second preset threshold , there is no need to correct the chip sequence.
  • the system After determining the chipoffset alignment of the M dedicated physical channels, and M is greater than or equal to the first preset threshold, the system determines the N pilot domains aligned in the first time in the M dedicated physical channels, of course Both M and N are positive integers.
  • the first time alignment here indicates that the timing of the pilot domain appearing in the frame of the dedicated physical channel is the same.
  • the appearance of the pilot domain in the elliptical circle in FIG. 1 is the same, that is: within the elliptical circle
  • the pilot domain is aligned at the first moment.
  • one time slot represents one from DATA1 to Pilot, one time slot exists.
  • the number of pilot domains that should be obtained is determined by a spreading code that is orthogonal to the spreading code used by other downlink channels in the cell and is not used, for example, orthogonal to the spreading code used by other downlink channels, and the number of unused spreading codes is 10.
  • the number of pilot domains that should be determined in the M dedicated physical channels is 10, so there is no direct relationship between the number of pilot domains and the number of dedicated physical channels that need to be explained by using other downlink channels. Relationship, that is, M does not have a direct impact on N.
  • the system in addition to determining the number of pilot domains that should be obtained by using the number of spreading codes that are orthogonal to the spreading codes used by the other downlink channels and are not used, the system may be combined with the system.
  • the maximum number of virtual pilot symbols preset in the medium determines the number of pilot domains that should be obtained, that is, the minimum value is determined among the number of unused spreading codes and the maximum number of virtual pilot symbols, and the minimum number is corresponding.
  • the resulting total number of pilot fields, such as spread spectrum used with other downstream channels The coded orthogonal and unused spread code number is 10, and the maximum number of virtual pilot symbols preset in the system is 15, and 10 pilot domains should be determined from the M dedicated physical channels.
  • the system After determining the N pilot domains in the M dedicated physical channels, the system determines the pilot symbols corresponding to each pilot domain, and then generates corresponding virtual pilot symbols based on the pilot symbols, in the embodiment of the present invention.
  • the virtual pilot symbols can be generated by, but not limited to, the following methods:
  • the IQ symbol is decomposed into an in-phase carrier component and an orthogonal carrier component by an IQ modulation method.
  • the pilot symbol can be decomposed to the I-path to obtain an in-phase carrier component, and decomposed into the Q-path to obtain a positive Cross carrier component.
  • the inverse of the in-phase carrier component and the orthogonal carrier component are determined as virtual pilot symbols. That is to say, the inverse of the in-phase carrier component and the inverse of the orthogonal carrier component are included in the virtual pilot symbol.
  • the virtual pilot symbol is in the third quadrant, that is, the pilot symbol and the virtual pilot symbol are symmetric with respect to the origin; if it is a pilot symbol When in the second quadrant, the virtual pilot symbols are in the fourth quadrant.
  • the power corresponding to the generated virtual pilot symbols may also be determined, because the virtual chip power in the pilot domain superimposed to the dedicated physical channel is too low, and the PAPR is not reduced.
  • the role of the virtual chip is too high, not only can not effectively reduce the PAPR, but also increase the PAPR in the baseband signal.
  • the power of the virtual chip is determined by the virtual pilot symbol.
  • the virtual pilot symbol is a
  • virtual The power of the pilot symbol is P
  • the virtual chip for superposition generated after the last spread spectrum scrambling is sqrt(P)*a*c(n), from which the pilot symbol can be determined to determine a pilot symbol.
  • the power of the virtual pilot symbols in the embodiment of the present invention may be, but is not limited to, determined by:
  • Method 1 Before generating the virtual pilot symbols, first adjust the settings preset in UMTS. Power, the set power is used to indicate the power that the generated virtual pilot symbols can have, so according to the set power in the UMTS, the generated power of each virtual pilot symbol should be preset in the UMTS. Set the power.
  • Manner 2 Determining a dedicated physical channel with maximum power in the dedicated physical channel used in the UMTS, and then acquiring the amount of power change between adjacent two time slots of the dedicated physical channel having the maximum power, that is, the dedicated The difference between the power that the physical channel has in the current time slot and the power that the previous time slot has.
  • the obtained power variation is used as a variable of the power of the virtual pilot symbol, that is, how much the dedicated physical channel power having the maximum power is changed, and the power of the generated virtual pilot symbol is also changed.
  • the preset power preset for the virtual pilot symbols in UMTS is A, if the power of the dedicated physical channel having the maximum power in the current time slot is B l and the dedicated physical channel having the maximum power is in the previous time The power in the gap is B. At this time, the power variation of the dedicated physical channel having the maximum power is (BrBo). If ⁇ and ⁇ are equal, the power of the virtual pilot symbol generated at this time is A; if ⁇ and ⁇ are not equal, then generated The power of the virtual pilot symbols is A + ( B Bo ), that is, once the power of the dedicated physical channel with the largest power changes, the power of the virtual pilot symbols also changes.
  • Manner 3 In this manner, the power of each virtual pilot symbol is determined by combining mode 1 and mode 2. Specifically, a part of the generated virtual pilot symbols have a set power, and another part of the generated virtual pilot symbols The power is then changed as the power of the dedicated physical channel with the greatest power changes.
  • the power of the virtual pilot symbols can be determined by any of the above three methods. Of course, different manners can be selected to determine the power of the virtual pilot symbols according to different application scenarios.
  • the virtual pilot symbols are superimposed into the pilot domain of the dedicated physical channel, but are virtual chips generated after the virtual pilot symbols are scrambled by the spread spectrum, after the virtual pilot symbols are obtained, the virtual guides are needed.
  • the frequency symbols are subjected to spread spectrum scrambling processing.
  • the spreading codes used for spreading and scrambling the virtual pilot symbols are Is a spreading code that is orthogonal to the spreading code used by other downlink channels in the cell and is not used, so the virtual chip generated after the spread scrambling process and the actual chip generated in the pilot domain Orthogonal.
  • the generated virtual chip is also the same initial time as the actual chip in the pilot domain aligned with the first time, and the generated virtual chip is only generated.
  • the pilot symbol A is subjected to spread spectrum scrambling to generate actual chips A1 and A2 and the virtual pilot symbol B is subjected to spread spectrum scrambling to generate virtual chips B1 and B2, wherein A1 and B1 are chips generated at the same time.
  • the actual chips at the same time as A1 and B1 are C1 and D1
  • A2 and B2 are chips generated at the same time
  • the actual chips at the same time as A2 and B2 are C2 and D2. Therefore, in the process of superposition, the actual chips A1, C1, and D1 are superimposed with the virtual chips B1, and the actual chips A2, C2, and D2 are superimposed with the virtual chips B2, so that the accuracy of the superposition can be achieved.
  • the algorithm for reducing the PAPR in the middle frequency RF does not cause the leakage, improves the efficiency of the power amplifier, and effectively avoids the problem that the power amplifier is burnt due to the high PAPR.
  • the PAPR in the baseband signal can be effectively reduced, thereby reducing the calculation pressure of reducing the PAPR in the medium radio frequency.
  • the power amplifier provides effective protection and improves the security and stability of the entire UMTS.
  • S203 ⁇ S206 are processes for the pilot domain in one slot of the M dedicated physical channels, and the processing process of the pilot domain on other time slots is exactly the same as the above content, where is not here. Narration.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a device for controlling a peak-to-average power ratio according to the first embodiment of the present invention further provides a device for controlling a peak-to-average power ratio.
  • the device includes: a determining module 501, Determining N pilot fields aligned at a first time in the M dedicated physical channels of the cell, where the first time alignment characterizes that the pilot domain appears at the same time in a frame of the dedicated physical channel, where, N, M Is a positive integer;
  • the generating module 502 is configured to acquire pilot symbols corresponding to each pilot domain in the N pilot domains, and generate virtual pilot symbols corresponding to each pilot symbol, where the pilot symbols and corresponding virtual symbols The pilot symbols are opposite to each other;
  • the processing module 503 is configured to perform a spread spectrum scrambling process on each generated virtual pilot symbol, and generate a virtual chip corresponding to each virtual pilot symbol;
  • the overlay module 504 is configured to overlap the actual chip corresponding to the first moment and the generated virtual chip.
  • the device further includes:
  • the obtaining module 601 is configured to acquire M dedicated physical channels in which the chip offsets are aligned in the cell, where the chip offset alignment indicates that the start time of the frames of the dedicated physical channel is the same or the starting time is different by an integer multiple;
  • the determining module 602 is configured to determine that M is greater than or equal to the first preset threshold.
  • the obtaining module 601 is further configured to obtain a sum of powers of the M dedicated physical channels.
  • the determining module 602 is further configured to determine that a sum of powers of the M dedicated physical channels is greater than or equal to a second preset threshold.
  • the generating module 502 is specifically configured to determine an in-phase carrier component and an orthogonal carrier component of the pilot symbol, and generate an inverse number of the in-phase carrier component and an inverse of the orthogonal carrier component corresponding to each pilot symbol.
  • the power is a virtual pilot symbol of preset power.
  • the generating module 502 is specifically configured to determine a dedicated physical channel having the maximum power among the powers of the M dedicated physical channels, and acquire power between adjacent two time slots of the dedicated physical channel with the maximum power.
  • the amount of the change is determined by the sum of the preset power and the amount of power change as the power of the virtual pilot symbol; generating a virtual pilot symbol corresponding to each pilot symbol, where the virtual pilot symbol and the pilot symbol are mutually The opposite number, and the power of the virtual pilot symbols is a determined power.
  • the generating module 502 is specifically configured to determine a dedicated physical channel having the maximum power among the powers of the M dedicated physical channels, and acquire power between adjacent two time slots of the dedicated physical channel with the maximum power. a quantity of the change; determining a sum of the preset set power and the power change amount as the power of the virtual pilot symbol; generating a virtual pilot symbol corresponding to each pilot symbol, the virtual pilot symbol and the pilot The symbols are opposite to each other, and the power of a part of the virtual pilot symbols in the virtual pilot symbols is a preset power, and the power of another part of the virtual pilot symbols is a determined power.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a baseband unit is further provided in the embodiment of the present invention, the baseband unit includes one or more processors, a memory, and one or more programs; one or more programs are stored in the memory and processed by one or more Calling and executing one or more programs from memory;
  • One or more of the programs here are configured to perform the following steps:
  • N N pilot domains aligned at a first time in the M dedicated physical channels of the cell, where the first time alignment characterizes that the pilot domain appears in a frame of the dedicated physical channel, where N, M are Positive integer
  • N is the total number of spreading codes that are orthogonal to the spreading codes used by other downlink channels in the cell and are not used; or N is the spreading code used in the cell with other downlink channels. The total number of spread codes that are used and not used and the minimum of the preset maximum number of virtual pilot symbols.
  • one or more programs are also configured to perform the steps:
  • one or more programs are also configured to perform the steps:
  • one or more programs are also configured to perform the steps:
  • the virtual pilot symbols including the inverse of the in-phase carrier component and the inverse of the orthogonal carrier component.
  • one or more programs are also configured to perform the steps:
  • a virtual pilot symbol having a power opposite to the pilot symbol and having a predetermined power is generated.
  • one or more programs are also configured to perform the steps:
  • one or more programs are also configured to perform the steps:
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne un procédé et un dispositif de commande de rapport puissance de crête/puissance moyenne. Le procédé consiste à : déterminer N domaines de fréquence pilote alignés à un premier moment dans M canaux physiques dédiés d'une cellule ; acquérir un symbole de fréquence pilote correspondant à chaque domaine de fréquence pilote à partir des N domaines de fréquence pilote, et générer un symbole de fréquence pilote virtuel correspondant à chacun des symboles de fréquence pilote respectifs ; exécuter un étalement du spectre et un embrouillage sur chacun des symboles de fréquence pilote virtuels générés de sorte à générer une puce virtuelle correspondant respectivement à chaque symbole de fréquence pilote virtuel ; et superposer des puces réelles correspondant au premier moment et les puces virtuelles générées. Dans le procédé selon l'invention, les puces virtuelles générées d'après les symboles de fréquence pilote virtuels et orthogonales aux puces réelles peuvent être superposées dans un signal de bande de base. Cela permet de réduire efficacement le PAPR dans le signal de bande de base, réduire encore la pression de calcul pour réduire le PAPR dans une fréquence radio intermédiaire, fournir une protection efficace à un amplificateur de puissance, et améliorer la sécurité et la stabilité globales de l'UMTS.
PCT/CN2014/077158 2014-05-09 2014-05-09 Procédé et dispositif de commande de rapport puissance de crête/puissance moyenne, et unité de bande de base WO2015168939A1 (fr)

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PCT/CN2014/077158 WO2015168939A1 (fr) 2014-05-09 2014-05-09 Procédé et dispositif de commande de rapport puissance de crête/puissance moyenne, et unité de bande de base
CN201480009063.1A CN105409180B (zh) 2014-05-09 2014-05-09 一种控制峰值平均功率比的方法、装置及基带单元

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101312446A (zh) * 2008-07-07 2008-11-26 苏州中科半导体集成技术研发中心有限公司 基于加权导频的相位跟踪补偿方法
CN101374125A (zh) * 2007-08-24 2009-02-25 大唐移动通信设备有限公司 一种降低峰均比的方法和装置
CN101394380A (zh) * 2007-09-18 2009-03-25 上海华为技术有限公司 降低正交频分复用系统中信息符号的峰均比的方法和系统
CN101447823A (zh) * 2007-11-27 2009-06-03 杰脉通信技术(上海)有限公司 一种td-scdma系统下行同步方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006129166A1 (fr) * 2005-05-31 2006-12-07 Nokia Corporation Procede et appareil de creation de sequences pilotes pour reduire le rapport de la valeur maximum a la valeur moyenne de la puissance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101374125A (zh) * 2007-08-24 2009-02-25 大唐移动通信设备有限公司 一种降低峰均比的方法和装置
CN101394380A (zh) * 2007-09-18 2009-03-25 上海华为技术有限公司 降低正交频分复用系统中信息符号的峰均比的方法和系统
CN101447823A (zh) * 2007-11-27 2009-06-03 杰脉通信技术(上海)有限公司 一种td-scdma系统下行同步方法
CN101312446A (zh) * 2008-07-07 2008-11-26 苏州中科半导体集成技术研发中心有限公司 基于加权导频的相位跟踪补偿方法

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