CN103944601A - PCIE (peripheral component interface express) interface based software radio frequency transmitter-receiver and method - Google Patents
PCIE (peripheral component interface express) interface based software radio frequency transmitter-receiver and method Download PDFInfo
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Abstract
The invention provides a PCIE (peripheral component interface express) interface based software radio frequency transmitter-receiver and a method. The transmitter-receiver comprises a radio frequency transmission-reception interface module, a modulation-demodulation module, an analog-to-digital/digital-to-analog conversion module, a PCIE high speed data interface module and a control module, wherein the radio frequency transmission-reception interface module is used for receiving or transmitting a radio frequency signal; the modulation-demodulation module is connected with the radio frequency transmission-reception interface module so as to complete conversion of modulation and demodulation between the radio frequency signal and an analog base band signal; the analog-to-digital/digital-to-analog conversion module is connected with the modulation-demodulation module so as to complete conversion between an analog signal and a digital signal; the PCIE high speed data interface module is connected with the analog-to-digital/digital-to-analog conversion module so as to complete data connection between the software radio frequency transmitter-receiver and peripheral equipment with a PCIE interface; and the control module is used for controlling the work of the radio frequency transmission-reception interface module, the modulation-demodulation module, the analog-to-digital/digital-to-analog conversion module and the PCIE high speed data interface module. Based on the PCIE interface, the software radio frequency transmitter-receiver communicates data with a portable computer, and is capable of realizing two duplex modes and being used in various communication systems by flexible configuration of software.
Description
Technical field
The invention belongs to wireless communication technology field, relate to a kind of radio communication wide band radio-frequency R-T unit, particularly relate to a kind of software radio RF receiving/transmission device and method based on PCIE interface.
Background technology
Software radio (SDR) technology is the wireless communication system architecture proposing in recent years, the earliest by military communication technical development, its basic thought is to carry out configure hardware by software, realizes restructural characteristic flexibly, and one of key technology difficult point is wherein exactly Transceiver RF Front-End circuit.The effect of software radio transceiver is that the operating state that radio frequency transceiver is configured to any pattern meets distinct communication standards requirement existing and that be about to occur.These communication standards mainly comprise cellular communications system (2G-2.5G-3G etc.), wireless lan communication system (802.11a/b/g/n etc.), wireless personal local area network communication system (Bluetooth, Zigbee etc.), broadcast communication system (DAB, DVB, DMB etc.) and navigation communication system (GPS, Galileo, GLONASS, the Big Dipper) etc.Obviously, each communication standard has different separately centre frequencies, channel width, noise objective, linearity index, transmitting power etc.Therefore radio frequency front end circuit for software radio transceiver must have the configurability of great dynamic range simultaneously, and meets the performance index requirement of distinct communication standards.
About the software radio general radio frequency R-T unit that particularly virtual radio is used, domestic a few patents or other the open achievements of only existing, if the patent publication No. < < that is CN1964339A is based in the upgradeable OFDM transceiver of software radio > >, this transceiver comprises variable transmitting and receiving module and control system, but it supports ofdm system; Patent publication No. is the < < multiple carrier software radio transceiver of CN1349325A and improves in the method > > of intelligent antenna performance, described multiple carrier software radio transceiver can be used for the multiple types such as GSM, CDMA, WCDMA, and can to the signal amplitude phase place between smart antenna, calibrate by software and hardware, to improve its amplitude-phase consistency, but it can not support FDD and TDD simultaneously; Patent publication No. is in < < radio frequency front end circuit for software radio transceiver > > of CN102255621A, described front-end circuit can be supported FDD and two kinds of dual-modes of TDD simultaneously, and adjustable apparatus performance index reduce power consumption, but this device is one section of radio circuit just, is not useable for portable computer.Up to now, be not specifically designed on the market the virtual radio radio-frequency front-end equipment of portable computer.This is mainly because existing software radio general radio frequency R-T unit mainly contains the deficiency of following several aspects:
1) bandwidth between radio-frequency front-end and baseband signal processing module is large not, and time delay is not little, is difficult to meet the demand of next generation communication system.
2) volume of existing RF receiving/transmission device is larger, cannot be for the virtual radio portable radio-frequency front end of portable computer.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of software radio RF receiving/transmission device and method based on PCIE interface, for solving prior art, be not specifically designed to the problem of the portable virtual radio frequency headend equipment of portable computer.
For achieving the above object and other relevant objects, the invention provides a kind of software radio RF receiving/transmission device and method based on PCIE interface, the wherein said software radio RF receiving/transmission device based on PCIE interface comprises: transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module, PCIE high speed interface module and control module; Described transmitting-receiving radio frequency interface module is in order to receive or to send radiofrequency signal; Described modulation /demodulation module is connected with described transmitting-receiving radio frequency interface module, in order to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal; Described modulus D/A converter module is connected with described modulation /demodulation module, in order to complete the conversion between analog signal and digital signal; Described PCIE high speed interface module is connected with described modulus D/A converter module, in order to complete described software radio RF receiving/transmission device, is connected with the data with the external equipment of PCIE interface; Described control module is connected respectively with described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module, in order to control the work of described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module.
Preferably, described transmitting-receiving radio frequency interface comprises: radio-frequency antenna interface, the first radio frequency single-pole double-throw switch (SPDT), the second radio frequency single-pole double-throw switch (SPDT); Described radio-frequency antenna interface comprises Rx antennal interface and Tx/Rx antennal interface; Described the first radio frequency single-pole double-throw switch (SPDT) comprises the 1st port, the 2nd port and the 3rd port; The 1st port of the first radio frequency single-pole double-throw switch (SPDT) is connected with described Rx antennal interface; Described the second radio frequency single-pole double-throw switch (SPDT) comprises the 1st port, the 2nd port and the 3rd port; The 3rd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with described Tx/Rx antennal interface, and the 2nd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with the 2nd port of described the first radio frequency single-pole double-throw switch (SPDT); When the first radio frequency single-pole double-throw switch (SPDT) is communicated with self the 1st port and the 3rd port, and the second radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in fdd mode; The 3rd port and the 2nd port when the first radio frequency single-pole double-throw switch (SPDT) connection self, and the 3rd port and the 2nd port or the second radio frequency single-pole double-throw switch (SPDT) that the second radio frequency single-pole double-throw switch (SPDT) is communicated with self in accepting state are communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in tdd mode at transmission state.
Preferably, described modulation /demodulation module comprises: analog I/Q quadrature demodulator, analog I/Q quadrature demodulator; Described analog I/Q quadrature demodulator is connected with the 3rd port of described the first radio frequency single-pole double-throw switch (SPDT); Described analog I/Q quadrature modulator is connected with the 1st port of described the second radio frequency single-pole double-throw switch (SPDT).
Preferably, described modulus D/A converter module comprises: the first baseband low pass filters, analog to digital converter, the second baseband low pass filters, digital to analog converter; Described the first baseband low pass filters is connected with described analog I/Q quadrature demodulator; Described analog to digital converter is connected with described the first baseband low pass filters; Described the second baseband low pass filters is connected with described analog I/Q quadrature modulator; Described digital to analog converter is connected with described the second baseband low pass filters.
Preferably, the radio frequency bandwidth of described software radio RF receiving/transmission device support is more than or equal to 10MHz; Described software radio RF receiving/transmission device is that volume is less than 100mm * 60mm * 10mm, and power consumption is less than 5W, and quality is less than the mancarried device of 100g; Described external equipment is portable computer.
The described software radio radio-frequency receiving-transmitting method based on PCIE interface comprises: PCIE Interface realization software radio RF receiving/transmission device is set in software radio RF receiving/transmission device and has the data communication between the external equipment of PCIE interface.
Preferably, the radio-frequency receiving-transmitting method that described software radio RF receiving/transmission device is realized comprises: utilize the transmitting-receiving radio frequency interface module in software radio RF receiving/transmission device to receive or send radiofrequency signal; Utilize the modulation /demodulation module in software radio RF receiving/transmission device to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal; Utilize the modulus D/A converter module in software radio RF receiving/transmission device to complete the conversion between analog signal and digital signal; Utilizing PCIE high speed interface module in software radio RF receiving/transmission device to complete described software radio RF receiving/transmission device is connected with the data with the external equipment of PCIE interface; Utilize control module in software radio RF receiving/transmission device to control the work of described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module.
Preferably, when described software radio RF receiving/transmission device is operated in tdd mode, described software radio radio-frequency receiving-transmitting method comprises: in receiving course, utilize the Tx/Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The 3rd port transmission to the 2 ports of the second radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, transfer to again the 2nd port of the first radio frequency single-pole double-throw switch (SPDT) in described transmitting-receiving radio frequency interface module, then through the 2nd port transmission to the 3 ports of described the first radio frequency single-pole double-throw switch (SPDT), then transfer to the analog I/Q quadrature demodulator in described modulation /demodulation module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting;
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
Preferably, when described software radio RF receiving/transmission device is operated in fdd mode, described software radio radio-frequency receiving-transmitting method comprises: in receiving course, utilize the Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The 1st port transmission to the 3 ports of the first radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, then transfer to the analog I/Q quadrature demodulator in described transmitting-receiving radio frequency interface module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting;
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
As mentioned above, software radio RF receiving/transmission device and method based on PCIE interface of the present invention, there is following beneficial effect: the present invention is a kind of portable radio-frequency R-T unit that can carry out data communication based on PCIE interface and portable computer, can realize by the flexible configuration of software TDD, two kinds of dual-modes of FDD; Can configure by software the wireless communication system of multiple types such as being applied to GSM, CDMA, WCDMA, LTE, WLAN, be applied to the digital multi-medium broadcasting receiving terminals such as CMMB, DVB, be applied to wireline communication network and comprise MoCa, HiNOC, the communication equipment of the systems such as HomeplugAV.
Accompanying drawing explanation
Fig. 1 is the structural representation of the software radio RF receiving/transmission device based on PCIE interface of the present invention.
Fig. 2 is the schematic flow sheet of the software radio radio-frequency receiving-transmitting method based on PCIE interface of the present invention.
Fig. 3 is a kind of application structure schematic diagram of the software radio RF receiving/transmission device based on PCIE interface of the present invention.
Element numbers explanation
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment mono-
The present embodiment provides a kind of software radio RF receiving/transmission device based on PCIE interface, as shown in Figure 1, the described software radio RF receiving/transmission device based on PCIE interface at least comprises: transmitting-receiving radio frequency interface module 10, modulation /demodulation module 20, modulus D/A converter module 30, PCIE high speed interface module 40 and control module 50; Wherein, transmitting-receiving radio frequency interface module 10, modulation /demodulation module 20, modulus D/A converter module 30, PCIE high speed interface module 40 are connected successively, and control module 50 is connected respectively with described transmitting-receiving radio frequency interface module 10, modulation /demodulation module 20, modulus D/A converter module 30, PCIE high speed interface module 40.
Transmitting-receiving radio frequency interface module 10 is in order to receive or to send radiofrequency signal.Further, described transmitting-receiving radio frequency interface 10 comprises radio-frequency antenna interface 101, the first radio frequency single-pole double-throw switch (SPDT) 102, the second radio frequency single-pole double-throw switch (SPDT) 103; Described radio-frequency antenna interface 101 comprises Rx antennal interface and Tx/Rx antennal interface; Described the first radio frequency single-pole double-throw switch (SPDT) 102 comprises the 1st port, the 2nd port and the 3rd port; The 1st port of the first radio frequency single-pole double-throw switch (SPDT) is connected with described Rx antennal interface; Described the second radio frequency single-pole double-throw switch (SPDT) 103 comprises the 1st port, the 2nd port and the 3rd port; The 3rd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with described Tx/Rx antennal interface, and the 2nd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with the 2nd port of described the first radio frequency single-pole double-throw switch (SPDT).When the first radio frequency single-pole double-throw switch (SPDT) is communicated with self the 1st port and the 3rd port, and the second radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in fdd mode; The 3rd port and the 2nd port when the first radio frequency single-pole double-throw switch (SPDT) connection self, and the 3rd port and the 2nd port or the second radio frequency single-pole double-throw switch (SPDT) that the second radio frequency single-pole double-throw switch (SPDT) is communicated with self in accepting state are communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in tdd mode at transmission state.
Modulation /demodulation module 20 is connected with described transmitting-receiving radio frequency interface module 10, in order to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal.Further, described modulation /demodulation module 20 comprises analog I/Q quadrature demodulator 201, analog I/Q quadrature demodulator 202; Described analog I/Q quadrature demodulator 201 is connected with the 3rd port of described the first radio frequency single-pole double-throw switch (SPDT); Described analog I/Q quadrature modulator 202 is connected with the 1st port of described the second radio frequency single-pole double-throw switch (SPDT).
Modulus D/A converter module 30 is connected with described modulation /demodulation module 20, in order to complete the conversion between analog signal and digital signal.Further, described modulus D/A converter module 30 comprises the first baseband low pass filters 301, analog to digital converter 302, the second baseband low pass filters 303, digital to analog converter 304; Described the first baseband low pass filters 301 is connected with described analog I/Q quadrature demodulator 201; Described analog to digital converter 302 is connected with described the first baseband low pass filters 301; Described the second baseband low pass filters 303 is connected with described analog I/Q quadrature modulator 202; Described digital to analog converter 304 is connected with described the second baseband low pass filters 303.Different modulation bandwidths can be by regulating adjustable device to select the low pass filter of different pass band widths.
PCIE high speed interface module 40 is connected with described modulus D/A converter module 30, in order to complete described software radio RF receiving/transmission device, is connected with the data with the external equipment of PCIE interface.PCIE high speed interface module 40 can be by the transfer of data of computer to digital baseband, also can be by the transfer of data of digital baseband to computer, and transmit computer control instruction; Be that described PCIE high speed interface module 40 can complete portable software radio frequency R-T unit to the connection of portable computer.
Control module 50 is in order to control the work of described transmitting-receiving radio frequency interface module 10, modulation /demodulation module 20, modulus D/A converter module 30 and PCIE high speed interface module 40.Described control module 50 can, by the control command of object computer, be controlled the modules such as transmitting-receiving radio frequency interface module 10, modulation /demodulation module 20, modulus D/A converter module 30, PCIE high speed interface module 40.Described control module 50 can be by interruption, poll, write the modes such as register realizes and the synchronizeing of external equipment (as portable computer).But synchronous method is not limited to interruption, poll, writes three kinds of modes such as register.
The radio frequency bandwidth of software radio RF receiving/transmission device of the present invention support is more than or equal to 10MHz; Described software radio RF receiving/transmission device is that volume is less than 100mm * 60mm * 10mm, and power consumption is less than 5W, and quality is less than the mancarried device of 100g; Described external equipment is portable computer.
The present invention is a kind of portable radio-frequency R-T unit that can carry out data communication based on PCIE interface and portable computer, and it is a kind of RF receiving/transmission device for the broadband software radio Communication System Design based on portable computer.This software radio RF receiving/transmission device can be realized by the flexible configuration of software TDD, two kinds of dual-modes of FDD; Can configure by software the wireless communication system of multiple types such as being applied to GSM, CDMA, WCDMA, LTE, WLAN, be applied to the digital multi-medium broadcasting receiving terminals such as CMMB, DVB, be applied to wireline communication network and comprise MoCa, HiNOC, the communication equipment of the systems such as HomeplugAV.
Device of the present invention has following characteristics:
1) portability, can be used for portable computer support and based on general processor, carries out the broadband virtual communication system of base band signal process and upper-layer protocol processing;
2) can carry out flexible configuration to radio-frequency front-end.
The present invention also provides a kind of software radio radio-frequency receiving-transmitting method based on PCIE interface, and the method can be realized by described software radio RF receiving/transmission device, also can be realized by the radio-frequency unit of other types.The main contents of described software radio radio-frequency receiving-transmitting method comprise: PCIE Interface realization software radio RF receiving/transmission device is set in software radio RF receiving/transmission device and has the data communication between the external equipment of PCIE interface.
The process of the software radio radio-frequency receiving-transmitting method being realized by described software radio RF receiving/transmission device as shown in Figure 2, is:
Utilize the transmitting-receiving radio frequency interface module in software radio RF receiving/transmission device to receive or send radiofrequency signal;
Utilize the modulation /demodulation module in software radio RF receiving/transmission device to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal;
Utilize the modulus D/A converter module in software radio RF receiving/transmission device to complete the conversion between analog signal and digital signal;
Utilizing PCIE high speed interface module in software radio RF receiving/transmission device to complete described software radio RF receiving/transmission device is connected with the data with the external equipment of PCIE interface;
Utilize control module in software radio RF receiving/transmission device to control the work of described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module.
When described software radio RF receiving/transmission device is operated in tdd mode, described software radio radio-frequency receiving-transmitting method comprises:
In receiving course, utilize the Tx/Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The second radio frequency single-pole double-throw switch (SPDT) is communicated with the 3rd port and the 2nd port of self, the first radio frequency single-pole double-throw switch (SPDT) is communicated with the 3rd port and the 2nd port of self, the 3rd port transmission to the 2 ports of the second radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, transfer to again the 2nd port of the first radio frequency single-pole double-throw switch (SPDT) in described transmitting-receiving radio frequency interface module, then through the 2nd port transmission to the 3 ports of described the first radio frequency single-pole double-throw switch (SPDT), then transfer to the analog I/Q quadrature demodulator in described modulation /demodulation module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting.
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The second radio frequency single-pole double-throw switch (SPDT) in described transmitting-receiving radio frequency interface module is communicated with the 1st port and the 3rd port of self, the first radio frequency single-pole double-throw switch (SPDT) is communicated with the 3rd port and the 2nd port of self, the 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
When described software radio RF receiving/transmission device is operated in fdd mode, described software radio radio-frequency receiving-transmitting method comprises:
In receiving course, utilize the Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The second radio frequency single-pole double-throw switch (SPDT) is communicated with the 3rd port and the 1st port of self, the first radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port and the 3rd port of self, the 1st port transmission to the 3 ports of the first radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, then transfer to the analog I/Q quadrature demodulator in described transmitting-receiving radio frequency interface module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting.
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The second radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port and the 3rd port of self, the first radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port and the 3rd port of self, the 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
Embodiment bis-
The present embodiment provides a kind of application structure of the software radio RF receiving/transmission device based on PCIE interface of the present invention, and as shown in Figure 3, this application structure comprises a fpga chip, a RF chip; Wherein, the modulation /demodulation module 20 in the described software radio RF receiving/transmission device based on PCIE interface and modulus D/A converter module 30 are integrated in described RF chip; PCIE high speed interface module 40 and control module 50 are integrated in described fpga chip.
Application structure described in the present embodiment is by PCIe1.0 mono-speed interface and external equipment swap data and control information, and this PCIe1.0 mono-speed interface can be supported 2Gbps message transmission rate, meets the data transfer bandwidth demand between radio-frequency card and external equipment.This PCIe1.0 mono-speed interface can be integrated in external equipment, can be also independent intermediate structure, realizes software radio RF receiving/transmission device based on PCIE interface of the present invention and the data communication of external equipment.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (9)
1. the software radio RF receiving/transmission device based on PCIE interface, is characterized in that, the described software radio RF receiving/transmission device based on PCIE interface comprises:
Transmitting-receiving radio frequency interface module, in order to receive or to send radiofrequency signal;
Modulation /demodulation module, is connected with described transmitting-receiving radio frequency interface module, in order to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal;
Modulus D/A converter module, is connected with described modulation /demodulation module, in order to complete the conversion between analog signal and digital signal;
PCIE high speed interface module, is connected with described modulus D/A converter module, in order to complete described software radio RF receiving/transmission device, is connected with the data with the external equipment of PCIE interface;
Control module, be connected respectively with described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module, in order to control the work of described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module.
2. the software radio RF receiving/transmission device based on PCIE interface according to claim 1, is characterized in that, described transmitting-receiving radio frequency interface comprises:
Radio-frequency antenna interface, comprises Rx antennal interface and Tx/Rx antennal interface;
The first radio frequency single-pole double-throw switch (SPDT), comprises the 1st port, the 2nd port and the 3rd port; The 1st port of the first radio frequency single-pole double-throw switch (SPDT) is connected with described Rx antennal interface;
The second radio frequency single-pole double-throw switch (SPDT), comprises the 1st port, the 2nd port and the 3rd port; The 3rd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with described Tx/Rx antennal interface, and the 2nd port of the second radio frequency single-pole double-throw switch (SPDT) is connected with the 2nd port of described the first radio frequency single-pole double-throw switch (SPDT);
When the first radio frequency single-pole double-throw switch (SPDT) is communicated with self the 1st port and the 3rd port, and the second radio frequency single-pole double-throw switch (SPDT) is communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in fdd mode; The 3rd port and the 2nd port when the first radio frequency single-pole double-throw switch (SPDT) connection self, and the 3rd port and the 2nd port or the second radio frequency single-pole double-throw switch (SPDT) that the second radio frequency single-pole double-throw switch (SPDT) is communicated with self in accepting state are communicated with the 1st port of self and during the 3rd port, described software radio RF receiving/transmission device is operated in tdd mode at transmission state.
3. the software radio RF receiving/transmission device based on PCIE interface according to claim 2, is characterized in that, described modulation /demodulation module comprises:
Analog I/Q quadrature demodulator, is connected with the 3rd port of described the first radio frequency single-pole double-throw switch (SPDT);
Analog I/Q quadrature modulator, is connected with the 1st port of described the second radio frequency single-pole double-throw switch (SPDT).
4. the software radio RF receiving/transmission device based on PCIE interface according to claim 3, is characterized in that, described modulus D/A converter module comprises:
The first baseband low pass filters, is connected with described analog I/Q quadrature demodulator;
Analog to digital converter, is connected with described the first baseband low pass filters;
The second baseband low pass filters, is connected with described analog I/Q quadrature modulator;
Digital to analog converter, is connected with described the second baseband low pass filters.
5. according to the software radio RF receiving/transmission device based on PCIE interface described in claim 1 to 4 any one, it is characterized in that: the radio frequency bandwidth of described software radio RF receiving/transmission device support is more than or equal to 10MHz; Described software radio RF receiving/transmission device is that volume is less than 100mm * 60mm * 10mm, and power consumption is less than 5W, and quality is less than the mancarried device of 100g; Described external equipment is portable computer.
6. the software radio radio-frequency receiving-transmitting method based on PCIE interface, it is characterized in that, the described software radio radio-frequency receiving-transmitting method based on PCIE interface comprises: PCIE Interface realization software radio RF receiving/transmission device is set in software radio RF receiving/transmission device and has the data communication between the external equipment of PCIE interface.
7. the software radio radio-frequency receiving-transmitting method based on PCIE interface according to claim 6, is characterized in that, the radio-frequency receiving-transmitting method that described software radio RF receiving/transmission device is realized comprises:
Utilize the transmitting-receiving radio frequency interface module in software radio RF receiving/transmission device to receive or send radiofrequency signal;
Utilize the modulation /demodulation module in software radio RF receiving/transmission device to complete the modulation /demodulation conversion between radiofrequency signal and analog baseband signal;
Utilize the modulus D/A converter module in software radio RF receiving/transmission device to complete the conversion between analog signal and digital signal;
Utilizing PCIE high speed interface module in software radio RF receiving/transmission device to complete described software radio RF receiving/transmission device is connected with the data with the external equipment of PCIE interface;
Utilize control module in software radio RF receiving/transmission device to control the work of described transmitting-receiving radio frequency interface module, modulation /demodulation module, modulus D/A converter module and PCIE high speed interface module.
8. the software radio radio-frequency receiving-transmitting method based on PCIE interface according to claim 7, is characterized in that, when described software radio RF receiving/transmission device is operated in tdd mode, described software radio radio-frequency receiving-transmitting method comprises:
In receiving course, utilize the Tx/Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The 3rd port transmission to the 2 ports of the second radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, transfer to again the 2nd port of the first radio frequency single-pole double-throw switch (SPDT) in described transmitting-receiving radio frequency interface module, then through the 2nd port transmission to the 3 ports of described the first radio frequency single-pole double-throw switch (SPDT), then transfer to the analog I/Q quadrature demodulator in described modulation /demodulation module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting;
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
9. the software radio radio-frequency receiving-transmitting method based on PCIE interface according to claim 7, is characterized in that, when described software radio RF receiving/transmission device is operated in fdd mode, described software radio radio-frequency receiving-transmitting method comprises:
In receiving course, utilize the Rx radio-frequency antenna interface received RF signal in described transmitting-receiving radio frequency interface module; The 1st port transmission to the 3 ports of the first radio frequency single-pole double-throw switch (SPDT) of radiofrequency signal in described transmitting-receiving radio frequency interface module, then transfer to the analog I/Q quadrature demodulator in described transmitting-receiving radio frequency interface module; Described analog I/Q quadrature demodulator is demodulated into analog baseband signal by radiofrequency signal; The first baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog to digital converter in described modulus D/A converter module is sampled as digital baseband signal by filtered analog baseband signal; Described PCIE high speed interface module transfers to external equipment by the digital baseband signal collecting;
In process of transmitting, described PCIE high speed interface module transfers to the digital to analog converter in described modulus D/A converter module by the digital baseband signal of external equipment output; Described digital to analog converter is converted to analog baseband signal by digital baseband signal; The second baseband low pass filters in described modulus D/A converter module is carried out low-pass filtering to described analog baseband signal; Analog I/Q quadrature modulator in described modulation /demodulation module is modulated to radiofrequency signal by described analog baseband signal; The 1st port transmission to the 3 ports of the second radio frequency single-pole double-throw switch (SPDT) of described radiofrequency signal in described transmitting-receiving radio frequency interface module, then the Tx/Rx radio-frequency antenna interface in described transmitting-receiving radio frequency interface module sends.
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