CN101964801A - Software radio modulation signal identification platform and identification method - Google Patents
Software radio modulation signal identification platform and identification method Download PDFInfo
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- CN101964801A CN101964801A CN2010105161459A CN201010516145A CN101964801A CN 101964801 A CN101964801 A CN 101964801A CN 2010105161459 A CN2010105161459 A CN 2010105161459A CN 201010516145 A CN201010516145 A CN 201010516145A CN 101964801 A CN101964801 A CN 101964801A
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Abstract
The invention is applied to the technical field of communication and provides a software radio modulation signal identification platform and a software radio modulation signal identification method. In the method, by completely separating functional control, display and algorithm operation, a part for controlling display is finished by ARM; the algorithm processing is finished by DSP; and good control function of the ARM and high efficiency of the algorithm operation of the DSP are fully utilized. When the ARM controls a peripheral port to receive data, the DSP processes the data, and the coprocessing of the ARM and DSP reduces the waiting time and has high efficiency. Therefore, the problem that the conventional modulation signal identification platform and method are difficult to implement or cannot give full play to flexible and extensible advantages of software radio is solved.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of software radio Modulation Signals Recognition platform and recognition methods.
Background technology
Existing software radio Modulation Signals Recognition platform has multiple framework, is described below respectively:
1, based on the platform of the high-end GPP of high-end FPGA+.In this mode, the Modulation Signals Recognition algorithm operates among the FPGA, and GPP is used for external control.The advantage of this processing mode is that flexibility height, algorithm operation have very high efficient.The shortcoming of this platform is: have complicated judgement, control and nested circulation time among the FPGA, implement the comparison difficulty, and GPP uses as controller usually, itself is bad at computing, so for complicated algorithm, implement the comparison difficulty.
2, based on the platform of the high-end DSP of high-end FPGA+.In this platform, with real-time require high, data processing amount is big, rate request is fast, but computing structure simple algorithm relatively realizes with the FPGA highly-parallel.But deal with data is less, but control structure algorithm complexity, usefulness arithmetic speed height, the DSP that addressing system is flexible, communication mechanism is powerful realize.The advantage of this framework is that disposal ability is strong, the efficiency of algorithm height.The shortcoming of this platform is: owing to algorithm need be disassembled open, algorithm all has operation in FPGA and DSP, and this just greatly reduces the flexibility of system.Compare modular design, do not have versatility, very flexible.
3, based on the platform of ASIC+DSP.ASIC finishes specific algorithm often as hardware accelerator, is suitable for function and realizes relative fixed, the application that data structure is clear and definite.To existing complicated judgement, control and nested circular flow in the algorithm in DSP.The advantage of this framework is that cost is lower, and power consumption is also lower.The shortcoming of this platform is: ASIC can only realize specific algorithm, and is proper for relatively more fixing algorithm.But when needing to customize specific function, expense is higher, and the design cycle is longer, needs sufficiently high amount that expense is shared equally.In addition, ASIC does not have programmability because treatment circuit has been fixed up, and can only come function is carried out limited modification by changing parameter, and it is the poorest comparatively speaking to expand row and flexibility.
In sum, existing Modulation Signals Recognition platform and method or realization has difficulties, or can not give full play to software radio can expand advantage flexibly.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of software radio Modulation Signals Recognition platform, is intended to solve existing Modulation Signals Recognition platform and method or realization has difficulties, or can not give full play to the problem of the advantage of can expanding flexibly of software radio.
The embodiment of the invention is achieved in that a kind of software radio Modulation Signals Recognition platform, and described platform comprises:
Comprise client that adopts ARM nuclear and the server end that adopts DSP nuclear, finishing being connected of physical layer of described ARM nuclear and DSP nuclear by shared drive, the algorithm invokes module is installed on the basis of the operating system of client, move the little real-time kernel of DSP BIOS and the Modulation Recognition module has been installed at server end, this algorithm invokes module further comprises the counterfoil proxy module again, this Modulation Recognition module further comprises the skeleton proxy module again
During this platform work, algorithm invokes module by client is sent the algorithm invokes request, the counterfoil proxy module is transferred in described algorithm invokes request, by communicating by letter between described counterfoil proxy module and the described skeleton proxy module, the skeleton proxy module receives request and the algorithm invokes request is translated out, Modulation Recognition is handled data according to request, and result passed to the counterfoil proxy module by the skeleton proxy module again, the interface that the counterfoil proxy module is given client with the result of receiving shows.
Further, described customer end adopted linux system.
Further, described ARM nuclear adopts middleware DSP LINK to carry out with communicating by letter of DSP nuclear.
Another purpose of the embodiment of the invention is to provide a kind of software radio Modulation Signals Recognition method, said method comprising the steps of:
The reading of data of ARM end is to Buffer Pool;
Send Control Parameter, reach the Buffer Pool address parameter of preservation data in the DSP end;
After receiving described Control Parameter, Buffer Pool address, jump to corresponding Buffer Pool address, the visit shared drive calls Modulation Recognition, and the data in the Buffer Pool are carried out Modulation Identification;
The DSP end is written to shared drive with operation result, notifies ARM end application program to dispose by the mode that sends message;
ARM end application program reads the parameter of passback, shows the result of Modulation Identification.
Further, described method also comprises step:
The ARM end sends reset instruction, and DSP is resetted again.
In an embodiment of the present invention, by function control, demonstration and algorithm computing are separated fully, the part that control shows is finished by ARM, algorithm process is finished by DSP, has made full use of the high efficiency of the calculation shipping row of good controlled function of ARM and DSP.When ARM control peripheral port received data, DSP handled data, and ARM and DSP associated treatment have reduced the stand-by period, have very high efficient.Like this, just solve existing Modulation Signals Recognition platform and method or realization has difficulties, or can not give full play to the problem of the advantage of can expanding flexibly of software radio.
Description of drawings
Fig. 1 is the structural representation of the software radio Modulation Signals Recognition platform that provides of the embodiment of the invention;
Fig. 2 is the flow chart of the software radio Modulation Signals Recognition method that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the structure of the software radio Modulation Signals Recognition platform that the embodiment of the invention provides, and this platform utilizes ARM and DSP to constitute the double-core heterogeneous network, and this double-core heterogeneous network comprises client and server end.Customer end adopted ARM nuclear, server end adopt DSP nuclear.
Client is responsible for function control, demonstration etc., and server end then is responsible for the operation of algorithm.ARM nuclear is finished with DSP nuclear being connected by shared drive of physical layer, shares agreement and adopts middleware DSP LINK to carry out communicating by letter of ARM nuclear and DSP nuclear.Client can adopt linux system as its operating system, and the algorithm invokes module is installed on the basis of operating system.At the little real-time kernel of server end operation DSP BIOS, the Modulation Recognition module is installed on this basis.This algorithm invokes module further comprises the counterfoil proxy module again, and this Modulation Recognition module further comprises the skeleton proxy module again.
During platform work, at first send the algorithm invokes request, with request call Modulation Signals Recognition algorithm by the algorithm invokes module of client.And ARM nuclear and DSP nuclear directly do not communicate, but are undertaken by counterfoil proxy module and skeleton proxy module.The counterfoil proxy module is at first transferred in the algorithm invokes request that the algorithm invokes module is sent, and passes to the skeleton proxy module of server end then by middleware DSP LINK.The skeleton proxy module is translated out with the algorithm invokes request, calls Modulation Recognition, and data are handled.Result through Modulation Recognition passes to the counterfoil proxy module by the skeleton proxy module again, and the interface that the counterfoil proxy module is given client with the result of receiving shows.
Fig. 2 shows the flow process of the software radio Modulation Signals Recognition method that the embodiment of the invention provides, and details are as follows:
In step S101, open the IO equipment receiving data.
In step S102, reading of data.Application program is opened device file and is received data, once reads n data to Buffer Pool.
In step S103, send Control Parameter then, reach the Buffer Pool address parameter of preservation data in the DSP end.This virtual address becomes through conversion can be by the physical address of DSP identification.
In step S104, the DSP termination has been received Control Parameter, the Buffer Pool address that the ARM end sends.
In step S105, jump to corresponding Buffer Pool address, the visit shared drive calls Modulation Recognition, and the data in the Buffer Pool are carried out Modulation Identification.
In step S106, operation result is written to shared drive, notify ARM end application program to dispose by the mode that sends message.
In step S107, ARM end application program reads the parameter of passback, shows the result of Modulation Identification, and DSP is resetted again.
In above-mentioned steps, ARM and DSP carry out data sharing and transmission of messages by shared drive.
In sum, the modulation algorithm identification implementation based on ARM and DSP proposed by the invention has overcome the problem that existing other Modulation Recognition implementation exists in realization.By function control, demonstration and algorithm computing are separated fully, the part that control shows is finished by ARM, algorithm process is finished by DSP, has made full use of the high efficiency of the calculation shipping row of good controlled function of ARM and DSP.When ARM control peripheral port received data, DSP handled data, and ARM and DSP associated treatment have reduced the stand-by period, have very high efficient.
Secondly,, carry out modularization respectively and operate on ARM and the DSP, reduced the coupling of control routine and algorithm, improved the flexibility of system by function control and algorithm process are separated.And by introducing counterfoil agency and skeleton agency, the communication mechanism of ARM and DSP is further encapsulated, stayed interface respectively and held the transmission parameter of algorithm to dock with transmission parameter and the DSP that ARM holds.Like this, Modulation Recognition and controlled function code are respectively as independently module existence.When program need be revised, only need to revise corresponding part, can not influence the realization of other function.Under this framework, Modulation Recognition implements has goodish flexibility.
Modulation Recognition only need be revised algorithm itself and get final product when needs are revised, can not influence other parts.Can replace or insert other algorithm in the part of Modulation Recognition fully in this system, and only need revise the controlled function code of corresponding ARM end, give full play to the extensibility of software radio.
In based on ARM and the distributed heterogeneous network system of DSP, by introducing counterfoil and skeleton agency, mode with service end/client realizes high efficiency and the flexibility that modulation algorithm identification is presented, and has fully verified the superiority of Modulation Recognition implementation proposed by the invention.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. software radio Modulation Signals Recognition platform is characterized in that described platform comprises:
Adopt the client of ARM nuclear and the server end that adopts DSP to examine, finishing being connected of physical layer of described ARM nuclear and DSP nuclear by shared drive, the algorithm invokes module is installed on the basis of the operating system of client, move the little real-time kernel of DSP BIOS and the Modulation Recognition module has been installed at server end, this algorithm invokes module further comprises the counterfoil proxy module again, this Modulation Recognition module further comprises the skeleton proxy module again
During this platform work, algorithm invokes module by client is sent the algorithm invokes request, the counterfoil proxy module is transferred in described algorithm invokes request, by communicating by letter between described counterfoil proxy module and the described skeleton proxy module, the skeleton proxy module receives request and the algorithm invokes request is translated out, Modulation Recognition is handled data according to request, and result passed to the counterfoil proxy module by the skeleton proxy module again, the interface that the counterfoil proxy module is given client with the result of receiving shows.
2. software radio Modulation Signals Recognition platform according to claim 1 is characterized in that, described customer end adopted linux system.
3. software radio Modulation Signals Recognition platform according to claim 1 is characterized in that, described ARM nuclear adopts middleware DSP LINK to carry out with communicating by letter of DSP nuclear.
4. a software radio Modulation Signals Recognition method is characterized in that, said method comprising the steps of:
The reading of data of ARM end is to Buffer Pool;
Send Control Parameter, reach the Buffer Pool address parameter of preservation data in the DSP end;
After receiving described Control Parameter, Buffer Pool address, jump to corresponding Buffer Pool address, the visit shared drive calls Modulation Recognition, and the data in the Buffer Pool are carried out Modulation Identification;
The DSP end is written to shared drive with operation result, notifies ARM end application program to dispose by the mode that sends message;
ARM end application program reads the parameter of passback, shows the result of Modulation Identification.
5. software radio Modulation Signals Recognition method according to claim 4 is characterized in that described method also comprises step:
The ARM end sends reset instruction, and DSP is resetted again.
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Application publication date: 20110202 |