CN102970054A - Open type software radio platform method, device and system - Google Patents

Open type software radio platform method, device and system Download PDF

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Publication number
CN102970054A
CN102970054A CN2011102572656A CN201110257265A CN102970054A CN 102970054 A CN102970054 A CN 102970054A CN 2011102572656 A CN2011102572656 A CN 2011102572656A CN 201110257265 A CN201110257265 A CN 201110257265A CN 102970054 A CN102970054 A CN 102970054A
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module
signal
open type
software radio
physical layer
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CN2011102572656A
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钱国明
陈涛
陈毅华
程玉才
吴金娇
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Nanjing Post and Telecommunication University
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钱国明
陈涛
陈毅华
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Abstract

The invention discloses an open type software radio platform method, device and system. The open type software radio platform system is composed of an open type physical layer processing module, a background processor and an open type hardware interface module. A base band processing module of the open type physical layer processing module is used for achieving conversion between signal base bands of a physical layer and intermediate frequency signals. An analog/digital (AD)/DA module is used for achieving high-speed analog/digital conversion. A transceiver module can be configured to select radio frequency modules in different frequency band ranges according to different communication protocols and standards configured by users. The background processor is used for achieving configuration and control on the platform and returning results to a graphical user interface (GUI) interface and is provided with a certain security mechanism. The open type hardware interface is used for achieving transmission of data signals and control signals of the platform. The open type software radio platform method, device and system provide an open type software radio platform which is strong in function, programmable, easy to modify and low in cost for wireless communication research.

Description

A kind of methods, devices and systems of open type software radio platforms
Technical field
The invention belongs to wireless communication technology field, particularly a kind of able to programme, easily revise and the low open type software radio platforms of cost.The present invention can be applicable to the multiple applications such as 3G (Third Generation) Moblie, cognitive radio, radio-frequency (RF) identification.
Background technology
The existing wireless communications system uses special chip and special-purpose hardware circuit to realize that its weak point is mostly:
1) function singleness: the special chip that uses in order to reduce cost, only have relatively single function, can't have compatible preferably with other system.For example, the base band signal processing chip of GSM can't be finished the base band signal process function of WCDMA.
2) very flexible: along with the fast development of communication system and communication protocol, special-purpose hardware circuit upgrading is difficult, very flexible.
3) development cost is high: development process complexity, the especially construction cycle of chip of special chip and hardware circuit are long, and cost is difficult to reduce.
In prior art, " communication means of movement-based GPRS radio communication platform " (application number: 201010555050.8) just announced the method that a kind of GPRS of use technology is carried out transfer of data that on November 23rd, 2010 announced.But there is the shortcoming of very flexible in the method for this employing GPRS, and namely when public network GPRS broke down, the wireless network that can't switch to other continued normal operation.
In recent years, software and radio technique appears as to address the above problem thinking is provided.Software radio (Software Radio) is also referred to as software defined radio (Software DefinedRadio), is based on the wireless communication systems structure of software definition.The basic thought of software radio is by being carried in the opening architecture on generalization, standardization, the modularized hardware, break away from the conventional wireless electricity mentality of designing that relies on hardware towards purposes fully, be that the major function such as air interface, frequency band of communication protocol is determined by software and finished, running parameter has programmable features, and operation is provided, controls, administer and maintain function by software, and need not change hardware fully.
In recent years, software and radio technique is widely used in radio communication field, and it at first is applied in the military affairs, can realize various forces stations interconnect and the software implementation of military radar with intelligent.Aspect civilian, multiband/multi-mode mobile general mobile phone, mobile phone general base station, wireless universal local area network (LAN) and wireless universal gateway all are the application directions of software radio.
Software radio couples together the formation general-purpose platform with modularization, standardization and unitized hardware cell with bus or exchanged form, by load-on module on this platform, unitized software, realizes various radio communication functions.But desirable software radio should be a kind of all radio of software programming, whole radio frequency able to programme (RF) wave band, channel access mode and Channel Modulation of comprising able to programme, basic thought is positioned as close to radio-frequency antenna with broadband A-D converter (A/D) and digital-to-analog converter (D/A) exactly.Software Radio platform commonly used adopts common hardware (for example: commercial server, common PC) as the platform of signal processing software, the signal of pure software is processed has very large flexibility, can adopt general high-level language (such as C/C++) to carry out software development, autgmentability and portable strong.But general hardware platform still less than on-site programmable gate array FPGA and the such specialized hardware of digital signal processor DSP, and mostly is the non-system that increases income aspect processing speed, efficient, volume, power consumption and real-time.Aspect specialized hardware, the relative DSP of FPGA, speed is fast, can better realize parallel processing; Power consumption is lower, has the flexibility of capable of dynamic configuration, can improve performance and saving resource.
Summary of the invention
In order to solve the existing restriction of software and radio technique on hardware resource, the present invention propose a kind of able to programme, easily revise and the low open type software radio platforms of cost, basic thought based on software radio, a kind of general radio communication platform is provided, system is freed from the mode that depends on for a long time permanent circuit, can be configured neatly according to user's request.
For achieving the above object, the methods, devices and systems of a kind of open type software radio platforms of the present invention is characterized in that, this system is comprised of open physical layer process module, background processor and open hardware interface.
Open physical layer process module comprises baseband processing module, AD/DA module, configurable transceiver module and clock module.Baseband processing module is realized the base band of physical layer signal and the conversion between the intermediate-freuqncy signal.The AD/DA module is for the conversion of finishing at different protocol and standards between high-frequency signal and the intermediate-freuqncy signal, the radiofrequency signal that to get off from antenna reception again down-conversion outputting analog signal is up-converted into radiofrequency signal to general AD module input with the intermediate-freuqncy signal of DA module output, and goes out by antenna transmission.Radio-frequency (RF) receiving and transmission module according to different communication protocol and the standard of configuration, is selected different radio-frequency (RF) receiving and transmission module, to realize the transmitting-receiving of radiofrequency signal.Clock module can use active crystal oscillator, perhaps uses passive crystal oscillator, the perhaps clocking such as pulse generator, and deliver to baseband processing module and configurable transceiver module by clock bus.
Background processor is realized configuration and control to described open physical layer process module, and the result is back to gui interface.
Open hardware interface is realized data-signal in open physical layer process module and background processor and the open physical layer process inside modules and the transmission of control signal.
Further, background processor sends needed configuration information to open physical layer process module according to user-selected wireless communication protocol, and then the open type software radio platforms can become the 3G (Third Generation) Moblie platform, perhaps cognitive radio platform, perhaps radio-frequency identification reader/writer etc.The user can by the method flexible choice communication system of computer software configuration, save the hardware spending cost on same open platform, flexibly also in time according to the upgrading of user's needs to communication system.
Further, the radio-frequency (RF) receiving and transmission module in the open physical layer process module is accepted wireless signal get off, and by open hardware interface MAC layer and the PHY layer of communication protocol is fed back to background processor, and the result is shown by gui interface.The user can pass through gui interface, recognizes intuitively MAC layer and PHY layer, and further improves on this basis the validity of communication system.
The platform that the present invention provides one powerful alternative to dispose for radio communication research, open physical layer process module and background processor provide powerful operational capability; The reconfigurability of open baseband processing module, open interface module and background processor provides stronger option and installment, can expand in the application demand to future.
Description of drawings
Fig. 1 is a kind of embodiment theory diagram of the present invention.
Fig. 2 is information flow block diagram of the present invention.
Fig. 3 is another kind of embodiment theory diagram of the present invention
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described, so that those skilled in the art understands the present invention better.What need to point out especially is that in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these were described in here and will be left in the basket.
Embodiment 1, as shown in Figure 1, is a kind of embodiment theory diagram of the present invention, is comprised of open physical layer process module 1, background processor 2 and open hardware interface 3.
Open physical layer process module 1 comprises baseband processing module 101, AD/DA module 102, overlaps configurable transceiver module 103 and clock module 104 more.
Baseband processing module 101 extracts required narrow band signal from the intermediate-freuqncy signal of input, and data rate is reduced so that data can pass on the background processor 2 by open hardware interface 3.The present invention adopts reconfigurability and the programmability of a slice high-performance FPGA back-up system height, can provide flexibly the multiple business function with the reconfigurability of open hardware resource.On RX path, the FPGA digital signal that sampling obtains to ADC is carried out Digital Down Convert DDC, and data is carried out the extraction of variable bit rate by stacked comb filter CIC.On transmit path, what FPGA carried out data is the pectination interpolation, and Digital Up Convert DUC carries out 102 li of AD/DA modules.
AD/DA module 102 is for the conversion of finishing at different protocol and standards between digital signal and the analog signal, the radiofrequency signal that to get off from antenna reception again down-conversion outputting analog signal is up-converted into radiofrequency signal to general AD module input with the analog if signal of DA module output, and goes out by antenna transmission.AD/DA module 102 of the present invention adapts to complicated electromagnetic environment, has larger dynamic range and higher sampling rate, sampling precision.
Configurable transceiver module 103 is divided into receiver section and transmitter section, according to different communication protocol and the standard of configuration, selects different radio-frequency (RF) receiving and transmission module, to realize the transmitting-receiving of radiofrequency signal, covers band limits 300M～3GHz.
Clock module 104 uses active crystal oscillator, perhaps passive crystal oscillator, and the perhaps clocking such as pulse generator, and deliver to baseband processing module and radio-frequency (RF) receiving and transmission module by clock bus.
Background processor 2 is realized configuration and control to described open physical layer process module, and the result is back to gui interface.The present invention adopts common PC to realize, realizes programming and the modification of communication protocol with C Plus Plus, finishes gui interface with wxPython.
Open hardware interface 3 is realized data-signal in open physical layer process module and background processor and the open physical layer process inside modules and the transmission of control signal.Use in the present invention USB, SPI, I 2The general bus structures such as C, GPIO realize data-signal in open physical layer process module and background processor and the open physical layer process inside modules and the transmission of control signal.
Embodiment 2, as shown in Figure 2, are information flow block diagrams of the present invention.Configurable transreceiver module 103 receives radio frequency signal, through twice down-conversion, signal is become information needed, delivers to background processor 2 by open hardware interface 3 at last.
Embodiment 3, as shown in Figure 3, are a kind of embodiment theory diagrams of the present invention.Use the present invention to finish the frequency spectrum perception flow chart of cognitive radio system.Utilize the configurability of this platform and powerful operational capability, can finish frequency spectrum perception, spectrum management and spectrum prediction, and the information exchanges such as channel capacity, traffic statistics are crossed open hardware interface 3 carry out in the present invention the data transmission.
Although the above is described the illustrative embodiment of the present invention; so that those skilled in the art understand the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present invention determined in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.

Claims (9)

1. the methods, devices and systems of an open type software radio platforms is characterized in that, comprising:
Open physical layer process module comprises baseband processing module, AD/DA module, configurable transceiver module and clock module.Baseband processing module is realized the base band of physical layer signal and the conversion between the intermediate-freuqncy signal.The AD/DA module is for the conversion of finishing at different protocol and standards between high-frequency signal and the intermediate-freuqncy signal, the radiofrequency signal that to get off from antenna reception again down-conversion outputting analog signal is up-converted into radiofrequency signal to the AD module input with the analog if signal of DA module output, and goes out by antenna transmission.Configurable transreceiver module according to different communication protocol and the standard of configuration, is selected different configurable transreceiver modules, to realize the transmitting-receiving of radiofrequency signal.The clock module clocking, and deliver to baseband processing module and configurable transceiver module by clock bus.
Background processor is realized configuration and control to described open physical layer process module, and the result is back to gui interface.
Open hardware interface is realized data-signal in open physical layer process module and background processor and the open physical layer process inside modules and the transmission of control signal.
2. the methods, devices and systems of open type software radio platforms according to claim 1, it is characterized in that, described baseband processing module adopts fpga chip, from the intermediate-freuqncy signal of input, extract required narrow band signal, and data rate is reduced so that data can pass on the background processor by open hardware interface.On RX path, the FPGA digital signal that sampling obtains to ADC is carried out Digital Down Convert DDC, and data is carried out the extraction of variable bit rate by stacked comb filter CIC.On transmit path, what FPGA carried out data is the pectination interpolation.The data processing amount that baseband processing module can satisfy bottom is large, the high requirement of processing speed.
3. the methods, devices and systems of open type software radio platforms according to claim 1 is characterized in that, described configurable transceiver module is divided into receiver section and transmitter section.Receive function the RF input signal in 300MHz～3GHz scope is passed through the two-stage variable gain amplifier, deliver to frequency mixer, directly input signal is down-converted to base band inphase/orthogonal component, base band output is through I/Q passage variable gain amplifier independently, and the gain of acquisition has automatic control function.The phase splitter PHASE SPLITTER circuit of transmitter produces the local oscillator of two-way quadrature, mixting circuit will produce the two-way modulation signal and export by summation is rear, analog signal directly is modulated on the radio-frequency carrier and sends into the rear class rf power amplifier and amplify, and finally passes through aerial radiation.
4. the methods, devices and systems of open type software radio platforms according to claim 1 is characterized in that, described AD/DA module has the characteristics of high sampling rate, high sampling precision and larger dynamic range.The present invention adopts plural number (IQ) sampling, and two groups of plural numbers are inputted and two groups of plural number outputs are matched to obtaining, and have higher flexibility, can adapt to complicated electromagnetic environment.
5. the methods, devices and systems of open type software radio platforms according to claim 1, it is characterized in that, described clock module can use active crystal oscillator, perhaps passive crystal oscillator, the perhaps clocking such as pulse generator, clock signal is delivered to radio-frequency module in order to local oscillations to be provided by the MMCX interface, and deliver to baseband processing module and AD/DA module in order to carry out clock synchronous; Simultaneously, for different communication systems, can change crystal oscillator or produce different frequencies by frequency dividing circuit, to satisfy system requirements.
6. the methods, devices and systems of open type software radio platforms according to claim 1, it is characterized in that, described background processor is by receiving adjustment with emission parameter to described open physical layer process module, comprise channel width, modulation and coded system, the correction of power excursion, frequency shift (FS), the center frequency point of radio frequency reception emission and the selection of duplex mode etc.
7. the methods, devices and systems of open type software radio platforms according to claim 1, it is characterized in that, described open hardware interface adopts USB 2.0 (USB) interface and background processor to communicate, and USB supports three kinds of transmission meanss: order, bulk read-write, synchronous transmission.The bitstream of in the present invention utility command bag configuration, pack into firmware and FPGA; Use the data between bulk read-write or synchronous transmission transmission FPGA and the background process.Data-signal in the open physical layer process inside modules and control signal are then by SPI (Serial Peripheral Interface, Serial Peripheral Interface) bus and I 2C bus (Inter IC Bus, chip chamber serial transmission bus) is transmitted, and to realize quick and efficient communication, makes the whole system operation smooth, satisfies the requirement of real-time.
8. the methods, devices and systems of described open type software radio platforms is characterized in that according to claim 1～3, must use E between baseband processing module and the configurable transceiver module 2PROM indicates and matches, and a plurality of E 2When PROM uses simultaneously, need to distinguish by the address.
9. according to claim 1, the methods, devices and systems of 6 described open type software radio platforms, it is characterized in that, described background processor can comprise subscriber identification module, the fail safes such as, authentication secret in order to finish, data integrity and operation audit control.
CN2011102572656A 2011-09-02 2011-09-02 Open type software radio platform method, device and system Pending CN102970054A (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN104242981A (en) * 2014-09-16 2014-12-24 北京交通大学 Embedded type communication device based on software radio
WO2015188308A1 (en) * 2014-06-10 2015-12-17 华为技术有限公司 Signal processing method, apparatus, and system
CN106707248A (en) * 2016-11-23 2017-05-24 中国电子科技集团公司第二十九研究所 Software-based radar signal real-time processing system
CN107135007A (en) * 2017-04-12 2017-09-05 西安科技大学 A kind of zero intermediate frequency reciver system and its method of reseptance based on software radio
CN109390660A (en) * 2017-08-04 2019-02-26 川升股份有限公司 Applied to the multiple antennas electronic device development system under multi-path environment
CN110943793A (en) * 2018-09-25 2020-03-31 北京大学 Dynamic spectrum access method and system based on cooperative sensing
CN112422165A (en) * 2020-10-23 2021-02-26 中国电子信息产业集团有限公司第六研究所 Airborne information safety module based on software radio
WO2022001991A1 (en) * 2020-06-29 2022-01-06 北京邮电大学 Wireless communication tester based on open source architecture, and test method, electronic device and non-transitory computer storage medium

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CN202602626U (en) * 2011-09-02 2012-12-12 钱国明 Open-type software radio platform

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CN101227711A (en) * 2007-01-19 2008-07-23 杨利华 Transmitting and receiving module for wireless audio and video transmission
CN101945490A (en) * 2010-09-03 2011-01-12 电子科技大学 Software radio-based wireless communication system terminal equipment
CN202602626U (en) * 2011-09-02 2012-12-12 钱国明 Open-type software radio platform

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015188308A1 (en) * 2014-06-10 2015-12-17 华为技术有限公司 Signal processing method, apparatus, and system
CN105453441A (en) * 2014-06-10 2016-03-30 华为技术有限公司 Signal processing method, apparatus, and system
CN104242981A (en) * 2014-09-16 2014-12-24 北京交通大学 Embedded type communication device based on software radio
CN104242981B (en) * 2014-09-16 2016-11-30 北京交通大学 A kind of embedded communication device based on software radio
CN106707248A (en) * 2016-11-23 2017-05-24 中国电子科技集团公司第二十九研究所 Software-based radar signal real-time processing system
CN107135007A (en) * 2017-04-12 2017-09-05 西安科技大学 A kind of zero intermediate frequency reciver system and its method of reseptance based on software radio
CN109390660A (en) * 2017-08-04 2019-02-26 川升股份有限公司 Applied to the multiple antennas electronic device development system under multi-path environment
CN109390660B (en) * 2017-08-04 2020-12-01 川升股份有限公司 Multi-antenna electronic device development system applied to multi-path environment
CN110943793A (en) * 2018-09-25 2020-03-31 北京大学 Dynamic spectrum access method and system based on cooperative sensing
CN110943793B (en) * 2018-09-25 2020-11-27 北京大学 Dynamic spectrum access method and system based on cooperative sensing
WO2022001991A1 (en) * 2020-06-29 2022-01-06 北京邮电大学 Wireless communication tester based on open source architecture, and test method, electronic device and non-transitory computer storage medium
CN112422165A (en) * 2020-10-23 2021-02-26 中国电子信息产业集团有限公司第六研究所 Airborne information safety module based on software radio

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