CN201238297Y - Multi-carrier GSM power amplifying linearization apparatus - Google Patents
Multi-carrier GSM power amplifying linearization apparatus Download PDFInfo
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- CN201238297Y CN201238297Y CNU2008200941908U CN200820094190U CN201238297Y CN 201238297 Y CN201238297 Y CN 201238297Y CN U2008200941908 U CNU2008200941908 U CN U2008200941908U CN 200820094190 U CN200820094190 U CN 200820094190U CN 201238297 Y CN201238297 Y CN 201238297Y
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- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model relates to a multi-wave-carrier GSM power amplifier linear device, which comprises a digital predistortion module, an upper frequency-variation module (101), a power amplification module and a mixing module, and is characterized in that the device also comprises a baseband feedforward module, a lower frequency-variation module (105), an upper frequency-variation module (106), a lower frequency-variation module (107) and an error amplification module. Different from the traditional radio-frequency feedforward way, the baseband feedforward module performs the feedforward treatment at the baseband, so that the problems of the time delay that is difficult to be processed in the traditional radio-frequency feedforward can be better resolved; with the digital predistortion module and the baseband feedforward module, the multi-wave-carrier GSM device can reach the balance between the efficiency and the linear indexes, and can satisfy the requirements of different application devices such as the base station and the repeater, and can satisfy the small-orientated requirement of the machine. The digital predistortion module can improve the power amplification efficiency while improving the linearity; the baseband feedforward module can further improve the linearity indexes of the output signal of the device.
Description
[technical field]
The utility model relates to multicarrier GSM power amplification system, especially a kind of be used for the GSM radio system multicarrier GSM power amplifier linearization device.
[background technology]
Along with the increase of wireless data communication service amount, GSM no longer is limited to voice calling service, and this just makes the multicarrier GSM device that can carry big data bandwidth that bigger demand has been arranged.
Realized in the past that multicarrier GSM device adopted a plurality of GSM single carrier power amplifiers to add the method for mixer, the linear index of mixer is very good, can make the intermodulation between the GSM multicarrier very little.But then, mixer can cause the Insertion Loss greater than 3dB, and the complete machine delivery efficiency is reduced; And owing to there are what carrier waves just to need what power amplifiers, this causes device volume weight bigger, can't satisfy the trend of current complete machine miniaturization.
Utilize multicarrier GSM power amplifier to realize that a plurality of GSM signals close the road and amplify, amplify because it has utilized a power amplifier to carry out signal, the therefore volume weight of alleviator greatly, but what bring simultaneously is the intermodulation problem that how to solve between the GSM multicarrier.
Solve signal intermodulation problem and be commonly referred to as linearisation.Linearisation progression generally has 3 kinds of modes: feedback, feedforward and predistortion.
● feedback transmitter is suitable for the narrower equipment of bandwidth (as mobile phone), and it is limited to improve effect, therefore can't be applied in the multicarrier GSM device;
● the accessible bandwidth maximum of feed forward approach, the linearisation effect is best, but its efficient is lower;
● pre-distortion method comprises analog predistortion and digital pre-distortion, and it is limited that the linearity of analog predistortion is improved effect, and it is handled, and bandwidth is narrower, consistency is relatively poor; And digital pre-distortion processing bandwidth is bigger, and effect is also better, has therefore obtained now using comparatively widely.
[summary of the invention]
For solving the problem that above-mentioned prior art exists, the utility model proposes a kind of GSM multicarrier linear makeup and put, it can make and reach a balance between overall efficiency and the linear index, can satisfy the demand of different application equipment such as base station, repeater.
For achieving the above object, technical scheme provided by the utility model is:
A kind of multicarrier GSM power amplifier linearization device, comprise the power amplifier input signal carries out the digital pre-distortion module of digital pre-distortion, baseband signal that the digital pre-distortion module is sent up-converts to radiofrequency signal up-conversion module 101, amplify the power amplifier module of the multicarrier GSM signal in the main channel, close the road module what the multicarrier GSM signal after amplifying carried out error correction, described multicarrier GSM power amplifier linearization device also comprises
The power amplifier output signal is carried out the base band feed-forward module of base band feed-forward process;
The radiofrequency signal of power amplifier module output is down-converted to baseband signal, the down conversion module 105 of signal input is provided for digital pre-distortion module and base band feed-forward module;
The baseband signal that the base band feed-forward module is sent up-converts to radiofrequency signal and is input to up-conversion module 106 in the error amplification module;
The radiofrequency signal of closing after the module of road is down-converted to baseband signal, the down conversion module 107 of signal input is provided for the base band feed-forward module;
Amplify the described error amplification module of feedforward error correction signal of up-conversion module 106 outputs.
The utility model is different with the conventional radio frequency feed-forward mode, the base band feed-forward module is carried out feed-forward process in base band, can control in the conventional radio frequency feedforward problems such as more unmanageable time delay preferably, make multicarrier GSM device between efficient and linear index, reach balance by digital pre-distortion module and base band feed-forward module, the demand of multiple application apparatuss such as base station, repeater can be satisfied, and complete machine miniaturization requirement can be satisfied.Wherein, described digital pre-distortion module improves power amplification efficiency when improving linearity; Described base band feed-forward module can further be improved the linear index of device output signal.
[description of drawings]
Fig. 1 is a multicarrier GSM power amplifier linearization device schematic diagram of the present utility model.
[embodiment]
Below in conjunction with specific embodiment and accompanying drawing in detail the utility model is described in detail.
The utility model provides a kind of multicarrier GSM power amplifier linearization device 10 at the characteristics of multicarrier GSM power amplifier linearization.
Multicarrier GSM power amplifier linearization device 10 structures of the present utility model as shown in Figure 1.Multicarrier GSM power amplifier linearization device 10 comprises that a digital pre-distortion module 100, a up-conversion module 101, a power amplifier module 102, close road module 103, a base band feed-forward module 104, a down conversion module 105, a up-conversion module 106, a down conversion module 107, an error amplification module 108.
The output radiofrequency signal 204 of device multicarrier GSM power amplifier linearization device 10 had an input multicarrier GSM baseband signal 200, to should be arranged.
The down-conversion radiofrequency signal 205 of multicarrier GSM baseband signal 200, feedback is input to digital pre-distortion module 100, obtains baseband output signal 201.
Up-conversion module 101 upconverts to radiofrequency signal 202 with baseband signal 201.
Power amplifier module 102 zooms into radiofrequency signal 203 with radiofrequency signal 202, and this moment, radiofrequency signal 203 had the non-linear distortion that causes.
Radiofrequency signal 203 one tunnel down-converts to baseband signal 205 through down conversion module 105, and another road is input to closes road module 103.
Close road module 103 radiofrequency signal 203, radiofrequency signal 210 are closed output signal 204 behind the road.
Output signal 204 obtains baseband signal 207 by down conversion module 107.
Multicarrier GSM baseband signal 200, baseband signal 205, baseband signal 207 are input to base band feed-forward module 104, obtain baseband output signal 206.
Baseband signal 206 obtains radiofrequency signal 208 through up-conversion module 106.
Radiofrequency signal 208 obtains the radiofrequency signal 210 after amplifying through error amplification module 108.
In conjunction with Fig. 1, below be the course of work of multicarrier GSM power amplifier linearization device 10, may further comprise the steps:
Step 1 is in device input input multicarrier GSM baseband signal 200, to device output signal 204 should be arranged;
Step 2,100 pairs of devices of digital pre-distortion module input signal 200, feedback signal 205 are carried out predistortion operation, up to algorithmic statement;
Step 3, base band feed-forward module 104 is carried out the parameter Estimation computing of fed-forward link according to multicarrier GSM baseband signal 200, feedback signal 205, feedback signal 207, up to algorithmic statement;
Step 4, repeating step 2, step 3.
Multicarrier GSM power amplifier linearization device in the utility model, digital pre-distortion method and feed forward approach have been adopted simultaneously, make and reach a balance between overall efficiency and the linear index, can satisfy the demand of different application equipment such as base station, repeater, this extensive use for multicarrier GSM power amplifier linearization device has great significance.
Above-described only is better embodiment of the present utility model, and it describes comparatively concrete and detailed, can not therefore be interpreted as the restriction to the utility model claim.Should be understood that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model design; in the scope of technical solutions of the utility model; utilize the technology contents of above-mentioned announcement to make some changes or be modified to the equivalent embodiment of equivalent variations, these all belong to protection range of the present utility model.
Claims (1)
1, a kind of multicarrier GSM power amplifier linearization device, comprise the power amplifier input signal carries out the digital pre-distortion module of digital pre-distortion, baseband signal that the digital pre-distortion module is sent up-converts to radiofrequency signal up-conversion module (101), amplify the power amplifier module of the multicarrier GSM signal in the main channel, close the road module what the multicarrier GSM signal after amplifying carried out error correction, it is characterized in that: described multicarrier GSM power amplifier linearization device also comprises
The power amplifier output signal is carried out the base band feed-forward module of base band feed-forward process;
The radiofrequency signal of power amplifier module output is down-converted to baseband signal, the down conversion module (105) of signal input is provided for digital pre-distortion module and base band feed-forward module;
The baseband signal that the base band feed-forward module is sent up-converts to radiofrequency signal and is input to up-conversion module (106) in the error amplification module;
The radiofrequency signal of closing after the module of road is down-converted to baseband signal, the down conversion module (107) of signal input is provided for the base band feed-forward module;
Amplify the described error amplification module of feedforward error correction signal of up-conversion module (106) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941908U CN201238297Y (en) | 2008-05-23 | 2008-05-23 | Multi-carrier GSM power amplifying linearization apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941908U CN201238297Y (en) | 2008-05-23 | 2008-05-23 | Multi-carrier GSM power amplifying linearization apparatus |
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| Publication Number | Publication Date |
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| CN201238297Y true CN201238297Y (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200941908U Expired - Fee Related CN201238297Y (en) | 2008-05-23 | 2008-05-23 | Multi-carrier GSM power amplifying linearization apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355202A (en) * | 2011-07-05 | 2012-02-15 | 李青 | Feedforward power amplifier with predistortion power amplifier |
-
2008
- 2008-05-23 CN CNU2008200941908U patent/CN201238297Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355202A (en) * | 2011-07-05 | 2012-02-15 | 李青 | Feedforward power amplifier with predistortion power amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CITY GUOREN RADIO FREQUENCY COMMUNICATION Free format text: FORMER OWNER: SHENZHEN POWERCOM CO., LTD. Effective date: 20090612 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090612 Address after: Three people building, middle science and technology building, Nanshan District science and Technology Park, Guangdong, Shenzhen Province, China: 518057 Patentee after: Shenzhen GrenTech Corporation Address before: Three people building, middle science and technology building, Nanshan District science and Technology Park, Guangdong, Shenzhen Province, China: 518057 Patentee before: Guoren Communication Co., Ltd., Shenzhen |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Qingyu Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100523 |