CN103281278B - LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal - Google Patents
LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal Download PDFInfo
- Publication number
- CN103281278B CN103281278B CN201310146792.9A CN201310146792A CN103281278B CN 103281278 B CN103281278 B CN 103281278B CN 201310146792 A CN201310146792 A CN 201310146792A CN 103281278 B CN103281278 B CN 103281278B
- Authority
- CN
- China
- Prior art keywords
- lte
- peak
- matched load
- controller
- communication
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Abstract
The invention is applicable to the technical field of communication, and provides an LTE (Long Term Evolution) communication transmission system, which comprises a radio frequency transmitter, a radio frequency power amplifier, a first signal detector, a first controller and a first matched load; the radio frequency transmitter is used for outputting an LTE modulating signal; the radio frequency power amplifier is used for amplifying the LTE modulating signal; the first signal detector is used for detecting the peak value and average power of the LTE modulating signal and working out and transmitting the value of the peak-to-average ratio of the LTE modulating signal to the controller; the first controller is used for controlling the impedance value of the first matched load according to the peak-to-average ratio; and the first matched load serves as the matched load of the radio frequency power amplifier, and is a variable-impedance device. The invention also correspondingly provides an LTE communication receiving system and a communication terminal. Thereby the LTE communication transmission system, the LTE communication receiving system and the communication terminal can reduce the distortion of signals with a high peak-to-average ratio in communication transmission and receiving links, thus increasing the quality of signal transmission.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of LTE communication emission system, reception system and communication are eventually
End.
Background technology
With the increase that user is required to wireless traffic, the use of 4G-LTE technologies and market demand development increase.In LTE
It is in the terminal of (Long Term Evolution, Long Term Evolution) technology and equipment, up that SC-FDMA has been respectively adopted with descending
(Single-carrier Frequency-Division Multiple Access, single-carrier frequency division multiple access) technology and OFDMA
(Orthogonal Frequency Division Multiple Access, OFDM) technology, the peak of signal output
Than substantially increase, it is the distortion for reducing signal that signal peak-to-average ratio height causes in amplification process, what is more confirmed at present has
Two schemes under a bit：1) PA (Power Amplifier, radio-frequency power amplifier) and LNA (Low of more high-gain are developed
Noise Amplifier, low-noise amplifier), reduce in signal amplification process by peak-to-average force ratio caused by distortion, these high property
The PA and LNA of energy has been applied in main equipment；2) optimize the peak-to-average force ratio of signal from the algorithm of signal, using signal
Reduce peak-to-average force ratio on the basis of quality assurance as far as possible.
The common ground of both the above scheme is all to reduce distortion of the high peak-to-average power ratio signal in communication equipment or terminal, is carried
High communication quality.From the point of view of current scheme, high-gain PA is high with the device cost of LNA, while power consumption increases, the program is in base
To stand etc., but in mobile phone etc. requires the terminal of low-power consumption inferior position substantially, power consumption increase necessarily causes terminal
Hydraulic performance decline；The peak-to-average force ratio major defect for optimizing signal from signal algorithm is that algorithm is excessively complicated, the efficiency of various algorithms
Have reduction in various degree.
In summary, existing LTE communication system and communication terminal, in actual use, it is clear that there is inconvenience and defect,
It is therefore necessary to being improved.
The content of the invention
For above-mentioned defect, it is an object of the invention to provide a kind of LTE communication emission system, reception system and communication
Terminal, which can adjust working condition according to signal peak-to-average ratio, improve effectiveness and quality.
To achieve these goals, the present invention provides a kind of LTE communication emission system, including：
RF transmitter, for exporting LTE modulated signals；
Radio-frequency power amplifier, for the LTE modulated signals enhanced processing；
First signal detector, for detecting peak value and the mean power of the LTE modulated signals, and it is described to calculate acquisition
The value of the peak-to-average force ratio of LTE modulated signals, and the value of the peak-to-average force ratio is sent to into the first controller；
First controller, for controlling the resistance value of the first matched load according to the peak-to-average force ratio；
First matched load, used as the matched load of the radio-frequency power amplifier, first matched load is variable
Impedance means.
LTE communication emission system of the invention, first controller are preset with the LTE modulated signals peak-to-average force ratio
First threshold；
If the LTE modulated signals peak-to-average force ratio is more than the first threshold, the first controller control described first
The resistance value of matched load, makes the radio-frequency power amplifier be operated in the first working condition；
Otherwise described first controller controls the resistance value of first matched load, makes the radio-frequency power amplifier work
Make in the second working condition.
LTE communication emission system of the invention, first matched load are variable dielectric constant load device.
LTE communication emission system of the invention, first matched load are the combination of variable capacitance and/or inductance
Device.
The present invention also provides a kind of communication terminal including emission system as described above.
The present invention also provides a kind of LTE communication reception system, including：
Low-noise amplifier, for the LTE signal enhanced processings to receiving；
Secondary signal detector, for detecting peak value and the mean power of the LTE signals, and calculates the acquisition LTE
The value of the peak-to-average force ratio of signal, and the value of the peak-to-average force ratio is sent to into second controller；
Second controller, for controlling the resistance value of the second matched load according to the peak-to-average force ratio；
Second matched load, used as the matched load of the low-noise amplifier, second matched load is can variable resistance
Anti- device；
Radio frequency receiver, for the LTE signals demodulation process after to amplification.
LTE communication reception system of the invention, the second controller are preset with the of the LTE signal peak-to-average ratios
Two threshold values；
If the LTE signal peak-to-average ratios are more than the Second Threshold, the second controller control described second is matched
The resistance value of load, makes the low-noise amplifier be operated in the first working condition；
Otherwise described second controller controls the resistance value of second matched load, makes the low-noise amplifier work
In the second working condition.
LTE communication reception system of the invention, second matched load are variable dielectric constant load device.
LTE communication reception system of the invention, second matched load are the combination of variable capacitance and/or inductance
Device.
The present invention also provides a kind of communication terminal including reception system as described above.
The present invention is by arranging signal detector in LTE communication emission system and reception system so as to can be with detection signal
Peak value and mean power, to obtain the peak-to-average force ratio of the signal.Meanwhile, the matched load of the amplifier of system is using variable negative
Carry, the control of its controlled device.Controller judges the working condition of system by signal peak-to-average ratio, and then phase is made in control load
The impedance variations answered, so that signal energy high-quality and efficient transmission.
Description of the drawings
Fig. 1 is the structural representation of the LTE communication emission system of one embodiment of the invention；
Fig. 2 is the structural representation of the LTE communication reception system of one embodiment of the invention；
Fig. 3 is the structural representation of the communication terminal of one embodiment of the invention；
Fig. 4 A are the gain of the amplifier of one embodiment of the invention and impedance relationship schematic diagram；
Fig. 4 B are the efficiency of the amplifier of one embodiment of the invention and impedance relationship schematic diagram.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, the invention provides a kind of LTE communication emission system, the system 100 can be built in communication terminal
Software unit, hardware cell or software and hardware combining unit.Described communication terminal can be mobile terminal such as mobile phone, PDA
（Personal Digital Assistant, personal digital assistant）, palm PC etc..Described LTE communication emission system 100
Including：
RF transmitter 101, for exporting LTE modulated signals.In LTE communication emission system 100, its transmitting is adopted
The LTE modulated signals of SC-CDMA technologies, i.e. RF transmitter 101 output are SC-CDMA modulated signals, and send it to and penetrate
Frequency power amplifier 102 is processed.
Radio-frequency power amplifier 102, for the LTE modulated signals enhanced processing.LTE signals after modulation,
Need before transmitting through 102 enhanced processing of radio-frequency power amplifier, enable signal transmit farther distance to meet communication whereby
Requirement.
First signal detector 103, for detecting peak value and the mean power of the LTE modulated signals, and calculates acquisition
The value of the peak-to-average force ratio of the LTE modulated signals, and the value of the peak-to-average force ratio is sent to into the first controller 104.In concrete application,
Integrated power detector and peak detector can be passed through to realize, signal power and peak detection technology relative maturity, here
Repeat no more.
First controller 104, for controlling the resistance value of the first matched load 105 according to the peak-to-average force ratio.First control
Device processed 104 is connected with the first signal detector 103, and which can be CPU devices, and export variable by the port of GPIO or correlation
Control voltage, and then control the first matched load 105 resistance value change.
First matched load 105, as the matched load of the radio-frequency power amplifier 102, first matched load 105
For variable impedance apparatus.Such as, first matched load 105 can be variable dielectric constant load device, or it is voltage-controlled
Variable capacitance and/or inductance combination unit etc., the variable impedance apparatus are not limited to above two device.
There is at present the device that can change capacitance and inductance value by voltage of correlation, can be used as the of amplifier
One matched load 105.In addition, device impedance changes also with the change in dielectric constant of device, it is possible to use related is variable
, used as the first matched load 105, other variable load impedance devices can also be used as radio-frequency power certainly for dielectric constant material
The output loading of amplifier 102.
The present invention controls the resistance value of the first matched load 105 by the first controller 104, changes the work of system whereby
State, to improve the transmission quality of signal.Preferably, the first controller 104 of the invention is preset with the LTE modulated signals
The first threshold of peak-to-average force ratio, if the actual peak-to-average force ratio of the signal for detecting is more than the first threshold, illustrates that the peak-to-average force ratio is
High peak-to-average power ratio, the first controller 104 control the impedance variations of the first matched load 105, and then control radio-frequency power amplifier 102
Which is made to be operated in high gain state (the first working condition)；If the actual peak-to-average force ratio of the signal for detecting is not more than first threshold
Value, then illustrate the peak-to-average force ratio for low peak average ratio, the impedance variations of the first matched load 105 of control of the first controller 104, and then control
Radio-frequency power amplifier processed 102 makes which be operated in high efficiency state (the second working condition).
Referring back to Fig. 2, the present invention provides a kind of LTE communication reception system accordingly, the system 200 can be built in it is logical
The software unit of letter terminal, hardware cell or software and hardware combining unit.Described communication terminal can be mobile terminal such as hand
Machine, PDA（Personal Digital Assistant, personal digital assistant）, palm PC etc..Described LTE communication is received
System 200 includes：
Low-noise amplifier 201, for the LTE signal enhanced processings to receiving.In LTE communication reception system 200,
The LTE signal demands for receiving are amplified by 201 pairs of signals for receiving of the low-noise amplifier first, to ensure LTE
Signal being capable of reliable demodulation.
Secondary signal detector 202, for detecting peak value and the mean power of the LTE signals, and it is described to calculate acquisition
The value of the peak-to-average force ratio of LTE signals, and the value of the peak-to-average force ratio is sent to into second controller 203.The secondary signal detector 202
It is identical with the structural principle of aforementioned first signal detector 103, will not be described here.
Second controller 203, for controlling the resistance value of the second matched load 204 according to the peak-to-average force ratio.Second control
Device processed 203 is connected with secondary signal detector 202, and which can be CPU devices, and export variable by the port of GPIO or correlation
Control voltage, and then control the second matched load 204 resistance value change.
Second matched load 204, used as the matched load of the low-noise amplifier 201, second matched load 204
For variable impedance apparatus.Such as, first matched load 105 can be variable dielectric constant load device, or it is voltage-controlled
Variable capacitance and/or inductance combination unit etc., the variable impedance apparatus are not limited to above two device.
Radio frequency receiver 205, for the LTE signals demodulation process after to amplification.In LTE communication reception system 200
In, its LTE signals demodulation is using OFDMA technologies.
The present invention controls the resistance value of the second matched load 204 by second controller 203, changes the work of system whereby
State, to improve the transmission quality of signal.Preferably, second controller 203 of the invention is preset with the LTE signal peak-to-average powers
The Second Threshold of ratio, if the actual peak-to-average force ratio of the signal for detecting is more than the Second Threshold, illustrates that the peak-to-average force ratio is peak
Comparing, second controller 203 controls the impedance variations of the second matched load 204, and then control low-noise amplifier 201 makes its work
Make in high gain state (the first working condition)；If the actual peak-to-average force ratio of the signal for detecting is not more than the first threshold,
Illustrate that the peak-to-average force ratio is low peak average ratio, second controller 203 controls the impedance variations of the second matched load 204, and then controls low
Noise amplifier 201 makes which be operated in high efficiency state (the second working condition).
In LTE communication transmitting or reception system, amplifier can be operated in different states under different loading conditions,
The state is it was determined that combine Fig. 4 A and Fig. 4 B, the figure is the SMITH of the different gains with efficiency of the PA of one embodiment of the invention
Circle diagram, as can be seen from the figure the gain optimum impedance point of PA is different from efficiency maximum impedance point, for LNA is also with same
Working condition.
The LTE communication emission system and reception system of the present invention can reduce high peak-to-average power ratio signal in communication transmitting and reception chain
The problem of distortion during road, improves the quality of signal transmission, meanwhile, can control to make in the case where signal peak-to-average ratio is relatively low
Corresponding amplifier operation saves power consumption in high efficiency state.
The present invention also correspondingly provides one kind includes LTE communication emission system 100 as described above and LTE communication reception system
200 communication terminal 300, as shown in Figure 3.In the communication terminal 300, RF transmitter 101 and radio frequency receiver 205 can be with one
Body is arranged so as to is modulated with SC-CDMA and OFDMA demodulation functions, and is completed the signal with base station by send/receive antenna
Transmission.
LTE is respectively adopted SC-FDMA technologies and OFDMA technologies in up transmitting and downlink reception, both debugging carrier waves
The signal peak-to-average power of technology is higher, i.e., in the case where average power signal is certain, signal peak is higher, and PA and LNA has one
Can there is distortion in amplifier out in the fixed linearity, one timing of peak power output, higher peak power input.And put
Big device（Such as radio frequency PA）It is operated in often inefficient under maximum gain state, high-gain and high efficiency are Amplifier Designs
Conflict index, the present invention communication terminal 300 by arrange variableimpedance amplifier effectively can balance high-gain with
Contradiction between low-power.
In sum, the present invention is by arranging signal detector in LTE communication emission system and reception system so as to can be with
The peak value of detection signal and mean power, to obtain the peak-to-average force ratio of the signal.Meanwhile, the matched load of the amplifier of system is adopted
With variable load, the control of its controlled device.Controller judges the working condition of system by signal peak-to-average ratio, and then controls
Corresponding impedance variations are made in load, so that signal energy high-quality and efficient transmission.
Certainly, the present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, ripe
Know those skilled in the art and work as and various corresponding changes and deformation, but these corresponding changes and change can be made according to the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (8)
1. a kind of LTE communication emission system, it is characterised in that include：
RF transmitter, for exporting LTE modulated signals；
Radio-frequency power amplifier, for the LTE modulated signals enhanced processing；
First signal detector, for detecting peak value and the mean power of the LTE modulated signals, and calculates the acquisition LTE
The value of the peak-to-average force ratio of modulated signal, and the value of the peak-to-average force ratio is sent to into the first controller；
First controller, for controlling the resistance value of the first matched load according to the peak-to-average force ratio；
First matched load, used as the matched load of the radio-frequency power amplifier, first matched load is variableimpedance
Device；
First controller is preset with the first threshold of the LTE modulated signals peak-to-average force ratio；
If the LTE modulated signals peak-to-average force ratio is more than the first threshold, the first controller control described first is matched
The resistance value of load, makes the radio-frequency power amplifier be operated in the first working condition；
Otherwise described first controller controls the resistance value of first matched load, is operated in the radio-frequency power amplifier
Second working condition.
2. LTE communication emission system according to claim 1, it is characterised in that first matched load is variable Jie
Electric constant load device.
3. LTE communication emission system according to claim 1, it is characterised in that first matched load is for can power transformation
The combination unit of appearance and/or inductance.
4. a kind of communication terminal including the emission system as described in any one of claims 1 to 3.
5. a kind of LTE communication reception system, it is characterised in that include：
Low-noise amplifier, for the LTE signal enhanced processings to receiving；
Secondary signal detector, for detecting peak value and the mean power of the LTE signals, and calculates the acquisition LTE signals
Peak-to-average force ratio value, and the value of the peak-to-average force ratio is sent to into second controller；
Second controller, for controlling the resistance value of the second matched load according to the peak-to-average force ratio；
Second matched load, used as the matched load of the low-noise amplifier, second matched load is filled for variableimpedance
Put；
Radio frequency receiver, for the LTE signals demodulation process after to amplification；
The second controller is preset with the Second Threshold of the LTE signal peak-to-average ratios；
If the LTE signal peak-to-average ratios are more than the Second Threshold, the second controller controls second matched load
Resistance value, make the low-noise amplifier be operated in the first working condition；
Otherwise described second controller controls the resistance value of second matched load, is operated in the low-noise amplifier
Second working condition.
6. LTE communication reception system according to claim 5, it is characterised in that second matched load is variable Jie
Electric constant load device.
7. LTE communication reception system according to claim 6, it is characterised in that second matched load is for can power transformation
The combination unit of appearance and/or inductance.
8. a kind of communication terminal including the LTE communication reception system as described in any one of claim 5～7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146792.9A CN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146792.9A CN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103281278A CN103281278A (en) | 2013-09-04 |
| CN103281278B true CN103281278B (en) | 2017-03-22 |
Family
ID=49063730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310146792.9A Active CN103281278B (en) | 2013-04-24 | 2013-04-24 | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103281278B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106358282A (en) * | 2016-10-26 | 2017-01-25 | 努比亚技术有限公司 | Device and method for optimizing emission power dissipation of mobile terminal |
| CN107404727B (en) * | 2017-09-07 | 2020-01-21 | 锐捷网络股份有限公司 | Communication network port optimization method and device and communication equipment |
| CN114337716A (en) * | 2020-09-30 | 2022-04-12 | 华为技术有限公司 | Signal processing circuit and related device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082141A (en) * | 1993-05-07 | 1994-02-16 | 马育宁 | Piston-rotating volume-varying mechanism |
| CN1282140A (en) * | 1999-07-22 | 2001-01-31 | 摩托罗拉公司 | Load envelope following amplifier system |
| CN1282143A (en) * | 1999-07-22 | 2001-01-31 | 摩托罗拉公司 | Power amplification circuit with load regulator for controlling adjacent and alternate channel power |
| CN102474971A (en) * | 2009-08-07 | 2012-05-23 | 株式会社京三制作所 | Pulse modulated RF power control method and pulse modulated RF power supply device |
-
2013
- 2013-04-24 CN CN201310146792.9A patent/CN103281278B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082141A (en) * | 1993-05-07 | 1994-02-16 | 马育宁 | Piston-rotating volume-varying mechanism |
| CN1282140A (en) * | 1999-07-22 | 2001-01-31 | 摩托罗拉公司 | Load envelope following amplifier system |
| CN1282143A (en) * | 1999-07-22 | 2001-01-31 | 摩托罗拉公司 | Power amplification circuit with load regulator for controlling adjacent and alternate channel power |
| CN102474971A (en) * | 2009-08-07 | 2012-05-23 | 株式会社京三制作所 | Pulse modulated RF power control method and pulse modulated RF power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103281278A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9806557B2 (en) | Wireless charging system with adaptive radio frequency interference | |
| US20230396225A1 (en) | Multiple-Port Signal Boosters | |
| US9094004B2 (en) | Transmitter system with digital phase rotator used for applying digital phase rotation to constellation data and related signal transmission method thereof | |
| US11856525B2 (en) | High-frequency signal processing apparatus and wireless communication apparatus | |
| CN103415066B (en) | The method of adjustment and terminal of a kind of WIFI transmission power | |
| CN105703715B (en) | Communication equipment with power amplifier crest factor abatement | |
| CN1223080C (en) | Load envelope following amplifier system | |
| US7629844B2 (en) | Device, system, and method of semi-Doherty outphasing amplification | |
| CN102150459B (en) | Controlling attenuation of antenna signal in communication terminal to reestablish lost communication link | |
| CN102150373B (en) | Controlling the dynamic range of RF receiver circuit in wireless communication terminal to reestablish lost communication link | |
| US8107902B2 (en) | Method and apparatus for optimizing current consumption of amplifiers with power control | |
| JP2019503133A (en) | Power amplifying device, envelope tracking type amplifying device, and method for amplifying a signal | |
| CN1282151A (en) | Power amplifying circuit with power supply regulator for controlling adjacent and alternate channel power | |
| US20140285262A1 (en) | Control device of power amplifier and method of controlling power amplifier | |
| CN103428829A (en) | Method for optimizing communication terminal power consumption and communication terminal | |
| CN103281278B (en) | LTE (Long Term Evolution) communication transmission system, LTE communication receiving system and communication terminal | |
| CN109347508B (en) | Mobile terminal and power detection method | |
| EP3780398A1 (en) | Millimeter wave communication-based radio frequency system, method for adjusting transmit power, and terminal | |
| CN111699725A (en) | Transmit power adjustment for an antenna | |
| US8200175B2 (en) | Efficiency controlling module of power amplifier and wireless communication device using the same | |
| CN111756396A (en) | Radio frequency circuit, electronic device, and control method | |
| CN113612495A (en) | Power supply method, device, medium and communication system of power amplifier | |
| CN112073085B (en) | Radio frequency circuit, electronic equipment and radio frequency control method | |
| KR101968704B1 (en) | Method and apparatus for determining transmitting power in the mimo communication system | |
| CN110971202A (en) | Method, apparatus, device and storage medium for power amplifier mode switching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |