CN202276359U - Despicking device and mobile communication system - Google Patents
Despicking device and mobile communication system Download PDFInfo
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- CN202276359U CN202276359U CN2011204013835U CN201120401383U CN202276359U CN 202276359 U CN202276359 U CN 202276359U CN 2011204013835 U CN2011204013835 U CN 2011204013835U CN 201120401383 U CN201120401383 U CN 201120401383U CN 202276359 U CN202276359 U CN 202276359U
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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
- H04L27/2614—Peak power aspects
- H04L27/2623—Reduction thereof by clipping
- H04L27/2624—Reduction thereof by clipping by soft clipping
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- H—ELECTRICITY
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Abstract
The utility model provides a despicking device and a mobile communication system. The device comprises a peak pulse generation module, a weighted control signal generation module, apeak pulse weighted module and an adder module; the peak pulse generation module is used for generating pulse value pulse signals according to input signals and transmitting the same to the peak pulse weighted module; the weighted control signal generation module is used for generating weighted factor control signals by referring to signals or frame synchronous signals according to an acquisition modulation method and sending the weighted factor control signals to the peak pulse weighted module; the peak pulse weighted module is used for respectively weighing the peak pulse signals which are received in different periods of time according to the received weighted factor control signals, and sending the weighted peak pulse signals to the first adder module; and the first adder module is used for superpositioning the weighted peak pulse signals to signals to be subject to peak clipping, and offsetting the signals to be subject to peak clipping. After the technical scheme of the utility model is adopted, the peak clipping performance in the system can be better.
Description
Technical field
The utility model relates to the signal processing field of communication system, in particular to a kind of peak cutting device and GSM.
Background technology
Along with mobile communication develops rapidly; It is more and more crowded that wireless communication frequency band becomes, and band resource is more and more nervous, in order in limited spectral range, to hold more communication channel; Must improve the spectrum efficiency of existing frequency range; People have used many new wideband digital transmission technologys and (have inserted (Wideband Code Division Multiple Access abbreviates WCDMA as), Long Term Evolution (Long-Term Evolution like OFDM (Orthogonal Frequency Division Multiplexing abbreviates OFDM as), WCDMA for this reason; Abbreviate LTE as)) and modulation system QPSK (the Quadrature Phase Shift Keying of spectral efficient; Abbreviate QPSK as), quadrature amplitude modulation (Quadrature Amplitude Modulation abbreviates QAM as), wherein; Quadrature amplitude modulation can comprise 8QAM, 16QAM, 64QAM etc., in the hope of reaching higher spectrum utilization density and channel space distribution widely.These efficiently the digital modulation transmission technology nearly all be non-constant envelope; But not permanent envelope modulated signal can produce bigger peak-to-average force ratio; Along with fast development of information technology, people are for the also more and more polynary change of service application, and speech business can not be satisfied demands of applications; Wireless communication system provides high-speed data service to become necessary trend; Therefore a competitive base station system not only is satisfied with support voice business and low-speed data service, and the indispensable element that provides the high-quality data service of high speed to become next generation communication system is handled for middle radiofrequency signal like this and also proposed higher requirement; How signal to be carried out handling and guaranteeing in real time flexibly the optimization of systematic function, present traditional peak clipping algorithm has been proposed higher requirement according to the service dispatching situation.
Be mainly reflected in; Data service develops rapidly and uses; Make that modulation system no longer is single a kind of modulation system; Picture global mobile communication (Global system for Mobile Communication; Abbreviate GSM as) system, enhanced data rates for gsm evolution (Enhanced DataRate forGSM Evolution) signal, the EV-DO signal of code division multiple access (Code Division Multiple Access abbreviates CDMA as), the HSDPA channel among the WCDMA etc., for being provided, efficient high-quality data traffic transmission arises at the historic moment.The characteristics of these signals have all adopted the higher modulation system of code efficiency (8PSK, 16QAM etc.); Diversification is accomplished to the support of business in the professional application requirements base station of diversification; Can dynamically adjust the modulation system of business time-slot like this according to professional situation of change; To intermediate frequency peak clipping algorithm, the demodulation tolerance limit of different modulating mode is different, and traditional peak clipping algorithm is not considered signal modulation system mixing application and do not distinguished the characteristic of channel and signal is carried out Unified Treatment in application; Can not bring into play the optimal performance of algorithm like this; Can take into account the peak clipping performance of high-order modulating with the peak clipping performance of sacrificing the low-order-modulated mode for mixed signal, can not bring into play the optimum performance that peak clipping is used like this in system, the peak clipping performance decrease can influence the efficiency index of system.
To the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
The utility model content
In correlation technique, can not bring into play the optimum performance of peak clipping in system, thereby influence the problems such as efficiency index of system, the utility model provides a kind of peak cutting device and GSM, to address the above problem at least.
An aspect according to the utility model; A kind of peak cutting device is provided; Comprise: peak pulse generation module, weighting control signal generator module, peak pulse weighting block and first adder module, wherein, the peak pulse generation module; Be connected to the peak pulse weighting block, be used for producing the peak pulse signal and sending to the peak pulse weighting block according to the signal of input; The weighting control signal generator module is connected to the peak pulse weighting block, is used for producing the weighted factor control signal and sending to the peak pulse weighting block according to modulation system reference signal of obtaining or frame synchronizing signal; The peak pulse weighting block; Be connected to the first adder module; Be used for respectively the peak pulse signal that different time sections receives being carried out weighted, and the peak pulse signal after the weighted is sent to the first adder module according to the weighted factor control signal that receives; The first adder module is used for the peak pulse signal after the weighted is added to and treats the peak clipping signal, treats the peak clipping signal and offsets.
Above-mentioned peak pulse weighting block comprises: weights factor gating unit; Link to each other with the weighting control signal generator module, be used for exporting to weighted units according to a plurality of weighted factor timesharing that the weighted factor control signal that the weighting control signal generator module produces will be imported; Weighted units; Be connected to weights factor gating unit; Be used for the peak pulse signal of the different time sections that receives being carried out weighted according to the weighted factor of weights factor gating unit output; And the peak pulse signal after the weighted is added to treats on the peak clipping signal, treat the peak clipping signal and offset.
Above-mentioned weighted units is a multiplier.
Said apparatus; Also comprise: filter; Be connected between peak pulse weighting block and the first adder module, be used for the peak pulse signal after the process peak pulse weighting block weighted is carried out filtering, and filtered peak pulse signal is sent to the first adder module.
Said apparatus also comprises: the peak value searching module, be connected to the second adder module, and be used for the input signal greater than predetermined threshold value is sent to the second adder module; First Postponement module is connected to the second adder module, be used for above-mentioned input signal is postponed to handle, and the input signal after will postponing to handle sends to the second adder module; The second adder module is used for the generation peak signal that superposes of the input signal after the delay that comes from first Postponement module of input signal that comes from the peak value searching module that receives and reception, and peak signal is sent to the peak pulse generation module.
Said apparatus also comprises: second Postponement module; Be connected to the peak value searching module; The input signal greater than predetermined threshold value that is used for coming from the peak value searching module postpones to handle to produce treats the peak clipping signal, and will treat that the peak clipping signal sends to the first adder module.
Another aspect according to the utility model also provides a kind of GSM, comprising: above-described device.
Pass through the utility model; Adopt the peak pulse weighting block that the peak pulse signal that different time sections receives is carried out weighted and the peak pulse signal after the weighted is sent to the first adder module; To treat the technological means that the peak clipping signal is offset; Solved and to have brought into play the optimum performance of peak clipping in system in the correlation technique, thereby influenced the problems such as efficiency index of system, and then reached the effect that the peak clipping performance that makes in the system reaches better performance.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the peak cutting device of the utility model embodiment;
Fig. 2 is the structural representation according to the peak cutting device of the utility model preferred embodiment;
Fig. 3 is the structural representation that does not adopt Fig. 1 or peak cutting device shown in Figure 2 according to the utility model embodiment;
Fig. 4 is the structural representation according to the peak cutting device in the concrete application process of the utility model embodiment;
Fig. 5 is the CDMA high-speed data service EV-DO signal slot structure chart according to the utility model embodiment;
Fig. 6 is the frame structure sketch map according to the TD-SCDMA system forward signal of the utility model embodiment;
Fig. 7 is the structural representation according to the peak pulse weighting block of the utility model embodiment 2;
Fig. 8 is according to the weighted factor control signal of the utility model embodiment and weighting parameter corresponding relation sequential chart.
Embodiment
Hereinafter will and combine embodiment to specify the utility model with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 1 is the structured flowchart according to the peak cutting device of the utility model embodiment.As shown in Figure 1, this peak cutting device comprises: peak pulse generation module 10, weighting control signal generator module 12, peak pulse weighting block 14 and first adder module 16, wherein,
Peak pulse generation module 10 is connected to peak pulse weighting block 14, is used for producing (extraction) peak pulse signal and sending to the peak pulse weighting block according to the signal of input;
Weighting control signal generator module 12 is connected to peak pulse weighting block 14, is used for producing the weighted factor control signal and sending to peak pulse weighting block 14 according to modulation system reference signal of obtaining or frame synchronizing signal;
Peak pulse weighting block 14; Be connected to first adder module 16; Be used for respectively the peak pulse signal that different time sections receives being carried out weighted, and the peak pulse signal after the weighted is sent to first adder module 16 according to the weighted factor control signal that receives;
Through above-mentioned peak cutting device; Owing to adopt the peak pulse weighting block that the peak pulse signal that different time sections receives is carried out weighted and the peak pulse signal after the weighted is sent to the first adder module; To treat the technological means that the peak clipping signal is offset, therefore, can solve and to have brought into play the optimum performance of peak clipping in system in the correlation technique; Thereby influence the problems such as efficiency index of system, and then reached the effect that the peak clipping performance that makes in the system reaches better performance.
In an embodiment of the utility model; As shown in Figure 2; Above-mentioned peak pulse weighting block 14; Can comprise with lower module: weights factor gating unit 140, link to each other with weighting control signal generator module 12, be used for exporting to weighted units 142 according to a plurality of weighted factor timesharing that the weighted factor control signal that weighting control signal generator module 12 produces will be imported; Weighted units 142; Be connected to weights factor gating unit 140; Be used for the peak pulse signal of the different time sections that receives being carried out weighted according to the weighted factor of weights factor gating unit 140 output; And the peak pulse signal after the weighted is added to treats on the peak clipping signal, treat the peak clipping signal and offset.Wherein, when concrete the application, above-mentioned weighted units 142 can adopt multiplier to realize.
In a preferred implementation of the utility model; For the peak clipping performance of better raising system, as shown in Figure 2, above-mentioned peak cutting device; Can also comprise: filter 18; Be connected between peak pulse weighting block 14 and the first adder module 16, be used for the peak pulse signal after process peak pulse weighting block 14 weighted is carried out filtering, and filtered peak pulse signal is sent to first adder module 16.
When concrete the application, as shown in Figure 2, above-mentioned peak cutting device can also comprise following hardware module: peak value searching module 20, be connected to second adder module 24, and be used for the input signal greater than predetermined threshold value is sent to second adder module 24; First Postponement module 22 is connected to second adder module 24, be used for above-mentioned input signal is postponed, and the signal after will postponing sends to second adder module 24; Second adder module 24; The input signal generation peak signal that superposes after input signal that comes from peak value searching module 20 that is used for receiving and the delay that comes from first Postponement module 22 that will receive, and peak signal sent to peak pulse generation module 10.
Preferably; Above-mentioned peak cutting device can also comprise: second Postponement module 26; Be connected to peak value searching module 20; The input signal greater than predetermined threshold value that is used for coming from peak value searching module 20 postpones to handle to produce treats the peak clipping signal, and will treat that the peak clipping signal sends to first adder module 16.
Because above-mentioned peak cutting device generally is applied in the communication system: therefore, in an embodiment of the utility model, a kind of GSM is provided also, comprises: above-described device when concrete the application.
In order to understand the foregoing description better, specify below in conjunction with preferred embodiment and relevant drawings.Need to prove; The peak clipping algorithm that in present system, adopts is based on the algorithm that peak pulse is offset more; Its peak cutting device is as shown in Figure 3, comprising: peak value searching module 20, first Postponement module 22, second adder module 24, second Postponement module 26, peak pulse generation module 10, filter 18 and first adder module 16.
Following examples relate to 3G or 4G (third generation radio communication or the 4th generation wireless communication system) communications field, and for example the peak clipping of systems such as TD-SCDMA, CDMA, WiMax and LTE is handled.
Following examples adopt following principle: the frame synchronizing signal of utilizing system to provide; Can be PP2S synchronous reference signal or baseband signal time slot modulation system index signal etc.; Interface according to the different system definition is confirmed; A cancellation pulses weighting control signal according to these reference signal structure timesharing or branch time slot; In conjunction with the different weights factor timesharing of the modulation system parameter-definition of the different time sections weights in addition different, reaching the amplitude size of real-time adjustment peak pulse, thereby guarantee the demodulation performance optimization of peak clipping performance under same thresholding of the wireless communication signals of compound modulation to peak pulse.
In order to make the lifting of system's peak clipping performance when speech business and data service mixing application and time-division channel adopt the different modulating mode.The system of this time-division weighting peak cutting device possesses following characteristics: but the difference of basis signal modulation system is carried out time-division processing to the peak value offset of signal; Can carry out time-division processing to the peak value offset of signal according to different time-gap or different channels; System can provide modulation system index signal or frame synchronization reference signal.
The timesharing weighted need produce a timesharing weighting control signal according to the modulation system index signal or the frame synchronizing signal of system; Can control the weights different in addition to different time sections peak value offset pulse (being the peak pulse signal) respectively, the scope of the weights factor is usually between 0 to 1.Mostly the peak value offset pulse algorithm that at present industry adopts in the wireless communication system is that cascade structure is accomplished handles the peak clipping of signal; Can guarantee that like this signal peak-to-average ratio can not be a greater impact under the condition, different weighted factors is set to reach the optimization configuration of signal demodulation performance to every grade of peak-clipping module.
As shown in Figure 4, this peak cutting device comprises: peak value searching module 20, first Postponement module 22, second adder module 24, second Postponement module 26, peak pulse generation module 10, filter 18, first adder module 16, weighting control signal generator module 12 and peak pulse weighting block 14.With respect to embodiment illustrated in fig. 3; The peak cutting device of present embodiment has increased weighting control signal generator module 12 and peak pulse weighting block 14; Based on this, can carry out weighted to the peak value offset pulse that receives with the time period, thereby improve the peak clipping performance of system.Specific as follows:
Weighting control signal generator module 12; Be used for producing timesharing weighting control signal (being the weighted factor control signal) according to modulation system index signal or frame synchronization index signal; The number and the duration of the weighted value that timesharing weighting control signal is corresponding need combine the applicable cases of each system to define; When the weighted factor parameter more for a long time logic can adopt state machine, can define corresponding different weighted factor value of each state of weighting control signal, the weighted factor value can be provided with through software interface; Peak pulse weighting block 14 carries out weighted according to the peak value offset pulse that the weights factor pair of system's setting is original.
Fig. 5 is the CDMA high-speed data service EV-DO signal slot structure chart according to the utility model embodiment 1.Because what Traffic Channel and MAC channel adopted is different modulation modes; Peak clipping to different modulated signals patient degree of injury be different; Therefore hope in the whole demodulation index that guarantees to promote under system peak-to-average is than constant situation signal; So just need carry out the timesharing peak clipping and handle, can guarantee like this under the situation that the peak-to-average force ratio index does not reduce, satisfy system requirements to the demodulation performance of each channel according to channel.Particularly,
As shown in Figure 5, the forward direction of CDMA high-speed data service EV-DO signal sends according to slotted mode.Time slot is divided into activation time slot and idle time slot, and each activates the power invariability in time slot and continuously, the power in each idle time slot then is not constant.In addition, whether EV-DO signal forward link will see service conditions at that time for the activation time slot is always decided, if current area does not have the user applies service, so most of time slot all is idle, and then power shows as non-constant.Have only when the sub-district is extremely busy, forward direction just always is the activation time slot, and forward power sends continuously and be constant in this case; This signal also has the characteristics of a maximum: in each time slot, pilot tone, MAC, business or control channel adopt the time division multiplexing mode framing, and the modulation system of each channel is not identical; Pilot channel is to be launched on the I road by complete ' 0 ' symbol; The MAC channel symbol is launched on the I/Q two-way through BPSK or OOK modulation back, and what business and control channel adopted is the PSK/8PSK/16QAM modulation, for the intermediate frequency peak clipping; The difference of modulation system has determined the degree that peak-to-average force ratio reduces; The identical modulation system various signals of this transmitting power adopts traditional peak clipping algorithm at present, and is excessive to the damage of MAC channel after peak clipping, causes the problem of MAC channel demodulation index exceeding standard when the peak clipping thresholding of confirming with Traffic Channel is used; Excessive for fear of the MAC channel impairments; Just must improve the peak clipping thresholding, can cause the peak-to-average force ratio index that gets into the power amplifier signal to raise like this, be unfavorable for the lifting of power amplification efficiency.
Adopt the peak cutting device of present embodiment that peak pulse is carried out the timesharing weighted; And it is shorter that the data of MAC channel account for whole time slot data; The MAC channel is carried out weak weighted and suitable weighted value is set; Can not occur obviously worsening the peak-to-average force ratio index is criterion; Usually also can confirm the suitable weights factor, thereby reach the purpose that promotes demodulation stability after the peak clipping of MAC channel that the timesharing weighting peak cutting device of Here it is present embodiment is applied to the core concept of the EV-DO signal of cdma system through emulation.
Fig. 6 is the frame assumption diagram of TD-SCDMA system forward signal; Different and the business time-slot power of the baseband transmission power of the TS0 time slot of TD-SCDMA signal shown in Figure 6, DWPTS and GP time slot; The peak clipping thresholding is to be a peak clipping thresholding of setting according to system's rated power in the system applies at present; In this case; These three time slots cause influencing the terminal and insert because the peak clipping meeting causes power loss bigger, and we can carry out mode that the branch time slot carries out weighting to cancellation pulses according to methods described herein and carry out peak clipping and handle to this situation; To the peak value offset pulse of these three time slots compose with one less than 1 weighted factor, can avoid the serious problem of energy loss that causes because of peak clipping like this.
The weighting flow process of present embodiment is following:
Frame synchronizing signal or modulation system reference signal structure weighted factor control signal that weighting control signal generator module 12 improves according to system; The sectionally weighting factor values is set, defines suitable weighted factor;
The peak pulse of 14 pairs of current extractions of peak pulse weighting block carries out weighted.
Adopt the peak cutting device of present embodiment; No longer need be when the intermediate frequency peak clipping and to the system index consideration of compromising to the requirement of different modulating mode or some special time slots; The dynamic characteristic that can change to signal in real time and accomplish the optimization of peak clipping performance index; Make it under plurality of application scenes, can reach preferable performance, guarantee system function optimization.
Embodiment 2
As shown in Figure 4, weighting control signal generator module 12 and two functional modules of peak pulse weighting block 14 in traditional peak-clipping module, increasing.Wherein, Peak pulse weighting block 14; As shown in Figure 7, it has comprised a weights factor gating unit and a weighted units, and weights factor gating unit 140 is according to the weighting control signal that weighting control signal generator module 12 produces a plurality of weights factors of input to be carried out timesharing output to select; Weighted units 142 is made up of a multiplier unit, is that peak factor is carried out weighted.Weighting control signal generator module 12 produces the control signal of a timesharing weighting according to modulation reference signals or the frame synchronization reference signal that system provides; This signal can be two or more states; Corresponding to two or more different weighted factors, modulation reference signals can adopt frame synchronizing signal or PP2S signal usually.Here the EV-DO signal processing with cdma system is an example, only needs to distinguish the peak value of MAC channel and non-MAC channel, and carries out the weighted of peak pulse respectively; Therefore, only need to consider two states here, corresponding two kinds of weights factors; The corresponding sequential relationship of the weights factor and weighting control signal is shown in accompanying drawing 8; The modulation reference signals here is the PP2S reference signal that the cdma system of employing provides, and only need carry out special weighting to the MAC channel, so the weighting control signal only need produce two states; Corresponding two kinds of weighted factor parameter values, usually the weighted factor alpha among Fig. 7 be one can be through the interface parameters of software setting.
Present traditional peak cutting device all is made up of the peak-clipping module of multi-stage cascade; The setting of the weights factor can be provided with respectively to each peak-clipping module in apparatus of the present invention; The timesharing weighted factor of every grade of peak clipping is arranged to different values; Be generally and guarantee that the signal peak-to-average ratio index does not receive and influence meeting the weighted factor of prime peak-clipping module is arranged to lower value too greatly; The back level can be selected to omit the weighted factor near 1, and the peak-to-average force ratio index can be by too much deterioration when can accomplish to take into account the improvement of demodulation index like this.
The peak cutting device of present embodiment is applicable in LTE, GSM and the TD-SCDMA system.
The peak cutting device of present embodiment both can also can be provided with the peak clipping parameter to the modulation system difference to time slot signal power difference; Simultaneously can also construct user-defined sequential the peak clipping weighting parameters is set, thereby reach the purpose of optimizing the peak clipping performance according to signal variation characteristics.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (7)
1. a peak cutting device is characterized in that, comprising: peak pulse generation module, weighting control signal generator module, peak pulse weighting block and first adder module, wherein,
Said peak pulse generation module is connected to said peak pulse weighting block, is used for producing the peak pulse signal and sending to said peak pulse weighting block according to the signal of input;
Said weighting control signal generator module is connected to said peak pulse weighting block, is used for producing the weighted factor control signal and sending to said peak pulse weighting block according to modulation system reference signal of obtaining or frame synchronizing signal;
Said peak pulse weighting block; Be connected to said first adder module; Be used for respectively the said peak pulse signal that different time sections receives being carried out weighted, and the peak pulse signal after the weighted is sent to said first adder module according to the said weighted factor control signal that receives;
Said first adder module is used for the peak pulse signal after the weighted is added to and treats the peak clipping signal, and the said peak clipping signal of treating is offset.
2. device according to claim 1 is characterized in that, said peak pulse weighting block comprises:
Weights factor gating unit links to each other with said weighting control signal generator module, is used for exporting to weighted units according to a plurality of weighted factor timesharing that the weighted factor control signal that said weighting control signal generator module produces will be imported;
Said weighted units; Be connected to said weights factor gating unit; Be used for the said peak pulse signal of the different time sections that receives being carried out weighted according to the weighted factor of said weights factor gating unit output; And, the said peak clipping signal of treating is offset said the treating on the peak clipping signal that be added to of the peak pulse signal after the weighted.
3. device according to claim 2 is characterized in that, said weighted units is a multiplier.
4. device according to claim 1 is characterized in that, also comprises:
Filter; Be connected between said peak pulse weighting block and the said first adder module; Be used for the peak pulse signal after the said peak pulse weighting block weighted of process is carried out filtering, and filtered peak pulse signal is sent to said first adder module.
5. device according to claim 1 is characterized in that, also comprises:
The peak value searching module is connected to the second adder module, is used for the input signal greater than predetermined threshold value is sent to said second adder module;
First Postponement module is connected to said second adder module, be used for said input signal is postponed to handle, and the input signal after will postponing to handle sends to said second adder module;
Said second adder module; Input signal after the said input signal that comes from said peak value searching module that is used for receiving and the delay that comes from said first Postponement module of reception superposes and produces said peak signal, and said peak signal is sent to said peak pulse generation module.
6. device according to claim 5 is characterized in that, also comprises:
Second Postponement module; Be connected to said peak value searching module; The input signal greater than predetermined threshold value that is used for coming from said peak value searching module postpones to handle and produces the said peak clipping signal of treating, and the said peak clipping signal of treating is sent to said first adder module.
7. a GSM is characterized in that, comprising: each described device of claim 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204013835U CN202276359U (en) | 2011-10-20 | 2011-10-20 | Despicking device and mobile communication system |
| PCT/CN2012/075603 WO2013056550A1 (en) | 2011-10-20 | 2012-05-16 | Peak clipping device and mobile communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204013835U CN202276359U (en) | 2011-10-20 | 2011-10-20 | Despicking device and mobile communication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228235A (en) * | 2015-09-09 | 2016-01-06 | 上海华为技术有限公司 | Signal processing method and base station |
| CN106301633A (en) * | 2016-07-29 | 2017-01-04 | 四川天邑康和通信股份有限公司 | A kind of repeater test waveform production method and system |
| CN112332885A (en) * | 2020-11-10 | 2021-02-05 | 普联技术有限公司 | Periodic signal peak searching method, device, equipment and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115460050B (en) * | 2021-12-24 | 2024-08-16 | 北京环佳通信技术有限公司 | Subcarrier reservation peak clipping method without iteration |
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| CN101237435B (en) * | 2007-01-30 | 2012-03-28 | 中兴通讯股份有限公司 | A method and device for reducing multi-carrier signal peak equal ratio |
| JP5010399B2 (en) * | 2007-08-29 | 2012-08-29 | 株式会社日立国際電気 | Orthogonal multiplexed signal peak suppression method, peak suppression circuit, and transmitter |
| CN101453440B (en) * | 2007-12-07 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and apparatus for lowering multi-carrier signal PAR |
| CN101848182A (en) * | 2009-03-25 | 2010-09-29 | 大唐移动通信设备有限公司 | Method and device for realizing adaptive peak clipping |
| CN101986636B (en) * | 2010-11-19 | 2014-07-16 | 中兴通讯股份有限公司 | Despiking coefficient update method and device suitable for frequency hopping and power fluctuation system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228235A (en) * | 2015-09-09 | 2016-01-06 | 上海华为技术有限公司 | Signal processing method and base station |
| WO2017041565A1 (en) * | 2015-09-09 | 2017-03-16 | 华为技术有限公司 | Signal processing method and base station |
| CN105228235B (en) * | 2015-09-09 | 2019-05-24 | 上海华为技术有限公司 | Signal processing method and base station |
| CN106301633A (en) * | 2016-07-29 | 2017-01-04 | 四川天邑康和通信股份有限公司 | A kind of repeater test waveform production method and system |
| CN106301633B (en) * | 2016-07-29 | 2019-04-26 | 四川天邑康和通信股份有限公司 | A kind of repeater test waveform production method and system |
| CN112332885A (en) * | 2020-11-10 | 2021-02-05 | 普联技术有限公司 | Periodic signal peak searching method, device, equipment and readable storage medium |
| CN112332885B (en) * | 2020-11-10 | 2022-05-24 | 普联技术有限公司 | Periodic signal peak searching method, device, equipment and readable storage medium |
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| WO2013056550A1 (en) | 2013-04-25 |
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