CN105517200A - Transmitted signal processing method and transmitted signal processing device - Google Patents
Transmitted signal processing method and transmitted signal processing device Download PDFInfo
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- CN105517200A CN105517200A CN201410500343.4A CN201410500343A CN105517200A CN 105517200 A CN105517200 A CN 105517200A CN 201410500343 A CN201410500343 A CN 201410500343A CN 105517200 A CN105517200 A CN 105517200A
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Abstract
The invention provides a transmitted signal processing method and a transmitted signal processing device. During a transmitting process of a first signal having a first communication mode, the predistortion processing of the first signal can be carried out by using a first input output characteristic, before the first signal is input in a power amplifier. A third input output characteristic can be formed by superposing the first input output characteristic with a second input output characteristic of the first signal after passing through the power amplifier, and the requirement of the first communication mode on the transmitted signal can be satisfied by the third input output characteristic, and therefore the power amplifier can be used for the amplification of the signals having the communication modes, which are not in accordance with the input output characteristics. In the signal transmission system, the same power amplifier can be used for the amplification of the transmitted signals having different communication modes, and the object of reducing the size of the communication terminal can be achieved.
Description
Technical field
The application relates to the communications field, particularly relates to one and to transmit processing method and device.
Background technology
At present, communication terminal needs the standard of support and frequency range to get more and more, and such as, mobile phone needs to support GSM, CDMA and LTE etc.Usually, communication terminal needs by signal after power amplifier amplifies, then launches.Visible, the input and output of the final signal launched can be subject to the impact of power amplifier.
Because finally transmitting of different systems is different to the requirement of input-output characteristic, so, transmitting of different systems is different to the requirement of the input-output characteristic of power amplifier, such as, the power output of GSM semaphore request power amplifier is non-linear with the change of input power, and the power output of LTE semaphore request power amplifier is highly linear etc. with the change of input power.
Because current power amplifier has fixing input-output characteristic, therefore, for different standards, need different power amplifiers, so, need in communication terminal to arrange different power amplifiers, with the demand of satisfied transmitting different systems signal simultaneously, and this can cause the layout area of circuit distribution excessive undoubtedly, thus be unfavorable for the volume reducing communication terminal.
Application content
The embodiment of the present application provides a kind of processing method of transmitting and device, object is to solve in communication terminal to be needed to arrange different power amplifiers simultaneously, with the demand of satisfied transmitting different systems signal, and the problem being unfavorable for the volume reducing communication terminal caused.
To achieve these goals, the embodiment of the present application provides following technical scheme:
One transmits processing method, comprising:
In the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal;
Described power amplifier has the second input-output characteristic, described first input-output characteristic and described second input-output characteristic superimposed after, form the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
Alternatively, described method is applied to electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, described first communication standard is different from described second communication standard, the signal of described first communication standard and the signal of described second communication standard share described power amplifier, described power amplifier can cover the frequency range of the signal of described first communication standard and the signal of described second communication standard, before described use first input-output characteristic carries out pre-distortion to described first signal, described method also comprises:
Obtain described first input-output characteristic;
Wherein, the detailed process of described first input-output characteristic of described acquisition comprises:
Obtain described second input-output characteristic;
By inquiring about the one-to-one relationship between default input-output characteristic from different communication standards, determine the reference signal under described first communication standard, described reference signal has described 3rd input-output characteristic;
According to described reference signal and described second input-output characteristic, calculate described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, form described 3rd input-output characteristic.
Alternatively, described second input-output characteristic of described acquisition comprises:
Generate emissioning testing signal;
Described emissioning testing signal is sent to described power amplifier;
Obtain the emissioning testing signal after described power amplifier amplifies;
By described emissioning testing signal after described power amplifier amplifies by down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
Alternatively, also comprise:
Store described first input-output characteristic.
Alternatively, also comprise:
By the first signal after described pre-distortion after inphase quadrature IQ modulates, by signal transceiver, be sent to described power amplifier.
A kind of transmission signal processing equipment, comprising:
Pre-distortion module, for in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal, described power amplifier has the second input-output characteristic, described first input-output characteristic and described second input-output characteristic superimposed after, form the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
Alternatively, described application of installation is in electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, the signal of described first communication standard and the signal of described second communication standard share the power amplifier that can cover its frequency range, and described device also comprises:
Acquisition module, for using before the first input-output characteristic carries out pre-distortion to described first signal in described pre-distortion module, obtains described first input-output characteristic;
Wherein, described acquisition module specifically comprises:
Acquiring unit, for obtaining described second input-output characteristic;
Determining unit, for passing through the default input-output characteristic curve of inquiry and the one-to-one relationship between different communication standards, determine the reference signal under described first communication standard, described reference signal has described 3rd input-output characteristic;
Computing unit, for according to described reference signal and described second input-output characteristic, calculates described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, forms described 3rd input-output characteristic.
Alternatively, described acquiring unit comprises:
Signal generates subelement, for generating emissioning testing signal;
Send subelement, for described emissioning testing signal is sent to described power amplifier;
Signal sampling subelement, for obtaining the emissioning testing signal after described power amplifier amplifies;
Signal transacting subelement, for described emissioning testing signal after described power amplifier amplifies is passed through down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
Alternatively, also comprise:
Memory module, for storing described first input-output characteristic.
Alternatively, also comprise:
Sending module, for by the first signal after described pre-distortion through IQ modulation after, by signal transceiver, be sent to described power amplifier.
What the embodiment of the present application provided transmit processing method and device, in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal, because described first input-output characteristic and the first signal by through the second input-output characteristic of power amplifier superimposed after, form the 3rd input-output characteristic, and described 3rd input-output characteristic meets described first communication standard to the requirement transmitted, visible, method described in the embodiment of the present application and device, the first signal after pre-distortion, after power amplifier, even if the input-output characteristic of power amplifier does not meet the first communication standard to the requirement transmitted, first signal is also because pre-distortion can meet the requirement of the first communication standard.So, power amplifier is made to may be used for the amplification of the signal of the communication standard be not inconsistent with its input-output characteristic, therefore, in signal transmitting system, same power amplifier can be used to amplify transmitting of different communication standard, realize the object of the volume reducing communication terminal.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of Fig. 1 a kind of processing method that transmits disclosed in the embodiment of the present application;
Fig. 2 is the flow chart of the embodiment of the present application another processing method that transmits disclosed;
Fig. 3 is the disclosed flow chart obtaining the concrete grammar of the second input-output characteristic of the embodiment of the present application;
The structural representation of Fig. 4 a kind of transmission signal processing equipment disclosed in the embodiment of the present application.
Embodiment
The embodiment of the present application discloses one and to transmit processing method, and can be applied to signal transmitting system, described signal transmitting system comprises power amplifier, for before being launched by signal, amplifies the power of signal to be transmitted.Described power amplifier has the second input-output characteristic.
Method described in the present embodiment, in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, uses the first input-output characteristic to carry out pre-distortion to described first signal.
Wherein, described first input-output characteristic and described second input-output characteristic superimposed after, formed the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
Transmit processing method and device described in the present embodiment, because before signal is launched, the first input-output characteristic is used to carry out pre-distortion to signal, after superposing with the second input-output characteristic of power amplifier because of the first output output characteristic again, satisfied first communication standard can be formed to the requirement transmitted, so, even if the input-output characteristic of power amplifier does not meet the requirement of the first communication standard, also can be used in the signal of amplification first communication standard, so, power amplifier can no longer by the restriction of communication standard, as long as pre-set the first input-output characteristic, a power amplifier just can be used to amplify the signal of different communication standard, thus improve the applicability of power amplifier, in the signal transmitting system comprising multiple different communication standard, same power amplifier can be used to amplify the signal of different communication standard, be conducive to the structure simplifying signal transmitting system.
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
One disclosed in the embodiment of the present application transmits processing method, be applied to electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, described first communication standard is different from described second communication standard, the signal of described first communication standard and the signal of described second communication standard share described power amplifier, described power amplifier can cover the frequency range of the signal of described first communication standard and the signal of described second communication standard, as shown in Figure 1, comprise the following steps:
S101: obtain the first input-output characteristic;
S102: use the first input-output characteristic to carry out pre-distortion to the first signal;
Wherein, pre-distortion can be realized by the mode of power back-off, phase compensation or Amplitude Compensation, and concrete implementation see existing pre-distortion method, can repeat no more here.
S103: by the first signal after described pre-distortion after inphase quadrature (in-phasequadrature, IQ) modulation, by signal transceiver, be sent to described power amplifier.
Method described in the present embodiment, be applied on the electronic equipment of the communication path comprising multiple different communication standard, difference with the prior art is, the communication path of different communication standard shares a power amplifier, because before signal of communication ingoing power amplifier, pre-distortion is carried out to it, so, even if the signal of certain communication standard do not supported by power amplifier, signal after power amplification also can meet the requirement of this communication standard, so, significantly can reduce the quantity of electronic equipment intermediate power amplifier, thus be conducive to the ultrathin design realizing electronic equipment.
There is one to transmit processing method disclosed in the embodiment of the present application, as shown in Figure 2, comprise the following steps:
S201: the output characteristic obtaining power amplifier, is designated as the second input-output characteristic;
S202: by inquiring about the one-to-one relationship between default input-output characteristic from different communication standards, determines the reference signal under described first communication standard, and described reference signal has described 3rd input-output characteristic;
S203: according to described reference signal and described second input-output characteristic, calculate described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, forms described 3rd input-output characteristic;
S204: store described first input-output characteristic;
Particularly, input-output characteristic can be stored in a tabular form, that is, by output parameter and input parameter corresponding stored in the table.
S205: use the first input-output characteristic to carry out pre-distortion to described first signal;
S206: by the first signal after described pre-distortion after IQ modulation, by signal transceiver, be sent to described power amplifier.
In the present embodiment, the one-to-one relationship between input-output characteristic from different communication standards can be preset, thus in the process transmitted, by inquiry corresponding relation, determine the input-output characteristic that the communication standard of signal to be transmitted requires, thus calculate the first input-output characteristic, and use the first input-output characteristic to carry out pre-distortion to signal to be transmitted, make signal to be transmitted meet the requirement of communication standard, its implementation procedure is easy, utilizes the realization of software and hardware.
Wherein, in the present embodiment, as shown in Figure 3, the concrete grammar obtaining the second input-output characteristic specifically can comprise the following steps:
S301: generate emissioning testing signal;
S302: described emissioning testing signal is sent to described power amplifier;
S303: obtain the emissioning testing signal after described power amplifier amplifies;
S304: by described emissioning testing signal after described power amplifier amplifies by down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
Because utilize self existing equipment can obtain the second input-output characteristic, and without the need to increasing extra equipment, so, be easy to hardware implementing, and the cost of electronic equipment can not be increased.
With said method embodiment accordingly, the embodiment of the present application also discloses a kind of transmission signal processing equipment, comprising:
Pre-distortion module, for in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal, described power amplifier has the second input-output characteristic, described first input-output characteristic and described second input-output characteristic superimposed after, form the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
Particularly, described device can be applied to electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, and the signal of described first communication standard and the signal of described second communication standard share the power amplifier that can cover its frequency range.
As shown in Figure 4, specifically can the comprising of described device:
Acquisition module 401, for obtaining described first input-output characteristic;
Pre-distortion module 402, in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, uses the first input-output characteristic to carry out pre-distortion to described first signal;
Memory module 403, for storing described first input-output characteristic.
Sending module 404, for by the first signal after described pre-distortion through IQ modulation after, by signal transceiver, be sent to described power amplifier.
Further, described acquisition module 401 specifically comprises:
Acquiring unit 4011, for obtaining described second input-output characteristic;
Determining unit 4012, for passing through the default input-output characteristic curve of inquiry and the one-to-one relationship between different communication standards, determine the reference signal under described first communication standard, described reference signal has described 3rd input-output characteristic;
Computing unit 4013, for according to described reference signal and described second input-output characteristic, calculate described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, form described 3rd input-output characteristic.
Further, described acquiring unit 4011 specifically comprises:
Signal generates subelement, for generating emissioning testing signal;
Send subelement, for described emissioning testing signal is sent to described power amplifier;
Signal sampling subelement, for obtaining the emissioning testing signal after described power amplifier amplifies;
Signal transacting subelement, for described emissioning testing signal after described power amplifier amplifies is passed through down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
Method described in the present embodiment, be applied on the electronic equipment of the communication path comprising multiple different communication standard, difference with the prior art is, the communication path of different communication standard shares a power amplifier, even if the signal of certain communication standard do not supported by power amplifier, device described in the present embodiment, make the signal after power amplification also can meet the requirement of this communication standard, so, significantly can reduce the quantity of electronic equipment intermediate power amplifier, thus be conducive to the ultrathin design realizing electronic equipment.
If the function described in the embodiment of the present application method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present application contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. transmit a processing method, it is characterized in that, comprising:
In the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal;
Described power amplifier has the second input-output characteristic, described first input-output characteristic and described second input-output characteristic superimposed after, form the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
2. method according to claim 1, it is characterized in that, described method is applied to electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, described first communication standard is different from described second communication standard, the signal of described first communication standard and the signal of described second communication standard share described power amplifier, described power amplifier can cover the frequency range of the signal of described first communication standard and the signal of described second communication standard, before described use first input-output characteristic carries out pre-distortion to described first signal, described method also comprises:
Obtain described first input-output characteristic;
Wherein, the detailed process of described first input-output characteristic of described acquisition comprises:
Obtain described second input-output characteristic;
By inquiring about the one-to-one relationship between default input-output characteristic from different communication standards, determine the reference signal under described first communication standard, described reference signal has described 3rd input-output characteristic;
According to described reference signal and described second input-output characteristic, calculate described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, form described 3rd input-output characteristic.
3. method according to claim 2, is characterized in that, described second input-output characteristic of described acquisition comprises:
Generate emissioning testing signal;
Described emissioning testing signal is sent to described power amplifier;
Obtain the emissioning testing signal after described power amplifier amplifies;
By described emissioning testing signal after described power amplifier amplifies by down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
4. method according to claim 2, is characterized in that, also comprises:
Store described first input-output characteristic.
5. the method according to claim 1 or 3, is characterized in that, also comprises:
By the first signal after described pre-distortion after inphase quadrature IQ modulates, by signal transceiver, be sent to described power amplifier.
6. a transmission signal processing equipment, is characterized in that, comprising:
Pre-distortion module, for in the process of the first signal of transmitting first communication standard, before by described first signal input power amplifier, the first input-output characteristic is used to carry out pre-distortion to described first signal, described power amplifier has the second input-output characteristic, described first input-output characteristic and described second input-output characteristic superimposed after, form the 3rd input-output characteristic, described 3rd input-output characteristic meets described first communication standard to the requirement transmitted.
7. device according to claim 6, it is characterized in that, described application of installation is in electronic equipment, two communication paths are at least comprised in described electronic equipment, first communication path supports the first communication standard, second communication standard supported by alternate path, and the signal of described first communication standard and the signal of described second communication standard share the power amplifier that can cover its frequency range, and described device also comprises:
Acquisition module, for using before the first input-output characteristic carries out pre-distortion to described first signal in described pre-distortion module, obtains described first input-output characteristic;
Wherein, described acquisition module specifically comprises:
Acquiring unit, for obtaining described second input-output characteristic;
Determining unit, for passing through the default input-output characteristic curve of inquiry and the one-to-one relationship between different communication standards, determine the reference signal under described first communication standard, described reference signal has described 3rd input-output characteristic;
Computing unit, for according to described reference signal and described second input-output characteristic, calculates described first input-output characteristic, after described first input-output characteristic is superposed with described second input-output characteristic, forms described 3rd input-output characteristic.
8. device according to claim 7, is characterized in that, described acquiring unit comprises:
Signal generates subelement, for generating emissioning testing signal;
Send subelement, for described emissioning testing signal is sent to described power amplifier;
Signal sampling subelement, for obtaining the emissioning testing signal after described power amplifier amplifies;
Signal transacting subelement, for described emissioning testing signal after described power amplifier amplifies is passed through down-converted, obtain Baseband Testing signal, the input-output characteristic of described Baseband Testing signal is described second input-output characteristic.
9. device according to claim 7, is characterized in that, also comprises:
Memory module, for storing described first input-output characteristic.
10. the device according to claim 6 or 8, is characterized in that, also comprises:
Sending module, for by the first signal after described pre-distortion through IQ modulation after, by signal transceiver, be sent to described power amplifier.
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| CN201410500343.4A CN105517200B (en) | 2014-09-26 | 2014-09-26 | Method and device for processing transmitted signal |
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| CN201410500343.4A CN105517200B (en) | 2014-09-26 | 2014-09-26 | Method and device for processing transmitted signal |
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| CN1294803A (en) * | 1998-01-21 | 2001-05-09 | 诺基亚移动电话有限公司 | Pulse shaping which compensates for component distortion |
| EP1050139B1 (en) * | 1998-01-21 | 2009-03-25 | Nokia Corporation | Pulse shaping which compensates for component distortion |
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