CN111641418A - E-band-based wireless communication system and signal processing method thereof - Google Patents
E-band-based wireless communication system and signal processing method thereof Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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Abstract
The invention provides an E-band-based wireless communication system and a signal processing method thereof, which are used for realizing frequency division duplex wireless communication based on an E band. The wireless communication system based on E wave band includes communication processing subsystem and millimeter wave front end subsystem and dual polarized antenna, wherein: the communication processing subsystem is used for receiving baseband signals and control signals through the baseband signal processing module, performing specific scrambling, coding, interweaving, modulation and digital pre-distortion compensation processing on the baseband signals according to the control signals, transmitting the baseband signals to the radio frequency signal processing module, converting the baseband signals into E-band signals through up-conversion, transmitting the E-band signals to the millimeter wave front end subsystem, and transmitting the millimeter wave front end subsystem to the dual-polarized antenna for emission after the millimeter wave front end subsystem is amplified through the power amplification module; the dual-polarized antenna is also used for receiving E-band signals, transmitting the E-band signals to the millimeter wave front-end subsystem, transmitting the E-band signals to the communication processing subsystem, converting the E-band signals into baseband signals through down conversion, and transmitting the baseband signals to the baseband signal processing module for output.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an E-band-based wireless communication system and a signal processing method thereof.
Background
With the explosive growth of the internet of things, the demand of wireless communication users for high-speed data transmission is sharply increased, and the arrival of the world of everything interconnection forces the development of wireless communication systems towards higher peak rate, better coverage, higher spectrum utilization rate and larger system capacity. The traditional microwave frequency band (6-42GHz) spectrum resource is increasingly tense, and a wider bandwidth is obtained by increasing the working frequency, so that the method is the most basic and effective way for expanding the communication capacity. The E-band covers a wide frequency range of 60-90GHz, in particular two complete sub-bands of 71-76GHz and 81-86GHz, which have been identified by the International Telecommunications Union (ITU) as a frequency band for communication, and the ultra-wide spectrum resources mean that it is theoretically capable of achieving ultra-large capacity transmission.
The E-band communication provides a flexible, convenient, efficient and reliable new path for air-ground/sea backbone network information sharing, establishment of a temporary broadband network in a major disaster area, deployment of a communication network in a less developed area/a complex mountain area, unmanned aerial vehicle-mounted high-definition real-time monitoring data return, AR/VR-based immersive communication and the like. However, the architecture of the E-band based transceiver system is not standardized and only stays in the laboratory research stage. Therefore, how to implement E-band-based wireless communication becomes one of the technical problems to be solved in the prior art.
Disclosure of Invention
The embodiment of the invention provides an E-band-based frequency division duplex wireless communication system and a signal processing method thereof, which are used for realizing E-band-based frequency division duplex wireless communication.
In a first aspect, a wireless communication system based on an E-band is provided, wherein an operating frequency band of the wireless communication system based on the E-band covers the E-band, an uplink operating frequency band is 71-76GHz, a downlink operating frequency band is 81-86GHz, the wireless communication system comprises a communication processing subsystem, a millimeter wave front end subsystem and a dual polarized antenna, the communication processing subsystem comprises a baseband signal processing module and a radio frequency signal processing module, the millimeter wave front end subsystem comprises a power amplification module, and the power amplification module:
the communication processing subsystem is used for receiving baseband signals and control signals through the baseband signal processing module, performing specific scrambling, coding, interleaving, modulation, digital pre-distortion compensation and transmitting power setting processing on the baseband signals according to the control signals, and transmitting the processed baseband signals to the radio frequency signal processing module; the radio frequency signal processing module converts a baseband signal into an E-band signal through up-conversion and transmits the E-band signal to the millimeter wave front-end subsystem;
the millimeter wave front-end subsystem is used for transmitting the received E-band signal to the dual-polarized antenna after the power amplification module performs power amplification on the received E-band signal;
the dual-polarized antenna is used for transmitting the received E-band signal.
In one embodiment, the dual-polarized antenna is further configured to receive an E-band signal and transmit the E-band signal to the millimeter wave front-end subsystem;
the millimeter wave front-end subsystem is also used for transmitting the received E-band signal to the communication processing subsystem;
the communication processing subsystem is used for receiving the E-band signals through the radio frequency signal processing module, converting the received E-band signals into baseband signals through down-conversion, transmitting the baseband signals to the baseband signal processing module and outputting the baseband signals by the baseband signal processing module.
In one embodiment, the E-band based wireless communication system further comprises an information processing subsystem coupled to the communication processing subsystem via a bus interface PCI-E and/or an ethernet port, wherein:
the communication processing subsystem is specifically configured to receive a baseband signal and a control signal transmitted by the information processing subsystem through the PCI-E interface and/or the ethernet port; and transmitting the baseband signal and the control signal to the information processing subsystem through the PCI-E interface and/or the Ethernet port.
In one embodiment, the power amplification module comprises an E-band vacuum amplification module.
In one embodiment, the dual polarized antenna transmits E-band signals using polarization multiplexing and 2 x 2 line-of-sight multiple-input multiple-output MIMO techniques.
In one embodiment, the dual polarized antenna employs a reflective intelligent reconfigurable surface.
In a second aspect, a method for transmitting a wireless communication signal based on an E-band is provided, where the method is applied to any one of the communication processing subsystems, and the method includes:
the baseband signal processing module receives a baseband signal and a control signal;
the control signal is adaptively adjusted according to the actual link state;
the baseband signal processing module carries out specific scrambling, coding, interleaving, modulation, digital pre-distortion compensation and transmitting power setting processing on the baseband signal according to a control signal;
the baseband signal processing module transmits the processed baseband signal to the radio frequency signal processing module;
the radio frequency signal processing module converts baseband signals into E-band signals through up-conversion and transmits the E-band signals to the millimeter wave front-end subsystem.
In a third aspect, a method for receiving a wireless communication signal based on an E-band is provided, where the method is applied to any one of the communication processing subsystems, and the method includes:
the radio frequency signal processing module receives an E waveband signal from the millimeter wave front-end subsystem;
the radio frequency signal processing module converts the received E-band signal into a baseband signal through down conversion;
and the radio frequency signal processing module transmits the baseband signal to the baseband signal processing module and the baseband signal is output by the baseband signal processing module.
In a fourth aspect, a computing device is provided, the computing device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of any of the methods described above.
In a fifth aspect, a computer storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of any of the methods described above.
By adopting the technical scheme, the invention at least has the following advantages:
the invention relates to a wireless communication system based on E wave band and a signal processing method thereof.A baseband signal processing module in a communication processing subsystem processes a received baseband signal, transmits the processed baseband signal to a radio frequency signal processing module for up-conversion to an E wave band signal and then transmits the E wave band signal to a millimeter wave front end subsystem, and the millimeter wave front end subsystem processes the E wave band signal and transmits the E wave band signal to a dual-polarized antenna for emission, thereby realizing the transmission of the wireless communication signal of the E wave band; meanwhile, the control parameters of the system are adaptively adjusted according to the link state, so that the reliability of signal transmission is improved.
Drawings
Fig. 1 is a schematic structural diagram of an E-band based wireless communication system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a millimeter-wave front end subsystem according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the structure of a transmit path of a communication processing subsystem according to an embodiment of the present invention;
fig. 4 is a flow chart illustrating a method for transmitting an E-band wireless communication signal according to an embodiment of the invention;
FIG. 5 is a block diagram of a receive path of a communication processing subsystem according to an embodiment of the present invention;
fig. 6 is a flow chart illustrating a method for receiving an E-band wireless communication signal according to an embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
First, some terms related to the embodiments of the present invention are explained to facilitate understanding by those skilled in the art.
It should be noted that the terms "first", "second", and the like in the description and the claims of the embodiments of the present invention and in the drawings described above are used for distinguishing similar objects and not necessarily for describing a particular order or sequence. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein.
Reference herein to "a plurality or a number" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The shannon theorem can be used to estimate the link capacity of multiple independent channels, and the capacity C can be expressed as:
where M is the number of independent channels, B is the operating bandwidth of the system, S is the signal power at the receiving end, and N is the receiver noise. The above equation, with Spectral Efficiency (SE) as a variable, can be rewritten into the following form (note that the Spectral efficiency of one channel is limited by the signal-to-noise ratio of the receiving end):
C＝M×B×SE
according to the above formula, the following method combinations can be adopted to realize the E-band ultra-large capacity transceiving system in the embodiment of the present invention:
(1) using multiple independent channels, such as Spatial Multiplexing (Spatial Multiplexing), Polarization Multiplexing (Polarization Multiplexing), etc.
(2) Increasing the system operating bandwidth generally requires operating in higher frequency bands, such as the E-band atmospheric window, but atmospheric attenuation in these bands will degrade link performance.
(3) High order modulation techniques, such as amplitude phase modulation (e.g., QAM and APSK), are applied, and these methods require higher signal power to obtain the signal-to-noise ratio required for correctly demodulating the signal (while ensuring high spectral efficiency, the modulation signal with low peak-to-average ratio should be selected as much as possible to make the operating point of the power amplifier as close to the saturation region as possible).
(4) Compared with a single carrier modulation mode, the Orthogonal Frequency Division Multiplexing (OFDM) technology can effectively overcome serious channel selective fading in the ultra-wideband working bandwidth. Compared with the traditional multi-carrier modulation method, the frequency utilization rate can be improved, and the transmission rate can be increased.
Meanwhile, the following considerations are also needed in system design:
(5) power amplifying module
In the specific implementation, the influence of E-band atmospheric attenuation on a communication link is considered, and the millimeter wave front end is realized by adopting an E-band high-power vacuum amplification module in the embodiment of the invention, so that the remote transmission of E-band wireless communication is guaranteed.
(6) MIMO (multiple input multiple output) antenna
In consideration of the fact that the traditional phased array antenna for MIMO is large in power consumption, difficult in heat dissipation design, high in cost and high in complexity, the intelligent reconfigurable surface is adopted as the transmitting antenna in the embodiment of the invention, the intelligent reconfigurable surface can effectively reduce the cost and the power consumption of the millimeter wave antenna, has better conformal characteristic, and provides support for realizing E-band ultra-large capacity transmission based on multi-stream multiplexing.
Based on the above description, an embodiment of the present invention provides an E-band-based wireless communication system, as shown in fig. 1, including a communication processing subsystem 11, a millimeter wave front end subsystem 12 and a dual-polarized antenna 13, where the communication processing subsystem includes a baseband signal processing module and a radio frequency signal processing module, the millimeter wave front end subsystem includes a power amplification module, where:
the communication processing subsystem 11 is configured to receive a baseband signal and a control signal through the baseband signal processing module, perform specific processing such as scrambling, encoding, interleaving, modulating, digital pre-distortion compensation, and transmit power setting on the baseband signal according to the control signal, and transmit the processed baseband signal to the radio frequency signal processing module; the radio frequency signal processing module converts a baseband signal into an E-band signal through up-conversion and transmits the E-band signal to the millimeter wave front-end subsystem;
the millimeter wave front-end subsystem 12 is configured to amplify the power of the received E-band signal by the power amplification module and transmit the amplified E-band signal to the dual-polarized antenna;
the dual-polarized antenna 13 is configured to transmit a received E-band signal.
In specific implementation, the dual-polarized antenna 13 is further configured to receive an E-band signal and transmit the E-band signal to the millimeter wave front-end subsystem;
the millimeter wave front-end subsystem 12 is further configured to transmit the received E-band signal to the communication processing subsystem;
the communication processing subsystem 11 is further configured to receive an E-band signal through the radio frequency signal processing module, convert the received E-band signal into a baseband signal through down conversion, transmit the baseband signal to the baseband signal processing module, and output the baseband signal processing module.
According to the embodiment of the invention, the communication processing subsystem mainly completes the function of millimeter wave frequency band high-speed wireless data transmission, adopts Software Defined Radio (SDR) architecture design, and realizes hardware generalization and functional software according to the design principle of 'generalization, modularization and standardization'. And an open system architecture is constructed by adopting a standard interconnection bus and a universal module design, and reconstruction and expansion of waveform application are supported. The system mainly comprises two main functional modules of radio frequency signal processing and baseband signal processing, and modules of power supply, clock, interface processing and the like, and is interconnected through a bus network. The radio frequency signal processing module mainly completes functions of receiving and transmitting frequency conversion, digital-to-analog conversion and the like of a broadband millimeter wave link, has the capacity of simultaneously working multiple channels and dynamically configuring and managing channels, and mainly has the following functions: frequency conversion from receiving millimeter wave signals to baseband signals, frequency conversion from baseband signals to transmitting excitation signals, AD (analog/digital) conversion and DA (digital/analog) conversion between analog signals and digital baseband signals, and the like; the baseband signal processing module completes general signal processing and comprehensive millimeter wave control, realizes the functions of modulation/demodulation (including QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature amplitude modulation), 64QAM (Quadrature amplitude modulation) and the like), data error correction coding and decoding (including RS (Reed-Solomon), Polar, LDPC (low density parity check code) and the like), beam envelope processing, polarization multiplexing signal processing, polarization interference elimination, MIMO precoding, beam forming, time measurement and the like) in various modes, and simultaneously completes information interaction of data, instructions and the like with the information processing subsystem.
In one embodiment, the dual polarized antenna transmits E-band signals using polarization multiplexing and 2 x 2 line-of-sight multiple-input multiple-output MIMO techniques. In yet another embodiment, the dual polarized antenna employs a reflective smart reconfigurable surface.
According to the embodiment of the invention, in order to realize the bidirectional 100Gbps transmission rate, a single-flow ultra-wideband transmission technical scheme based on an architecture of orthogonal frequency division multiplexing, high-order modulation and demodulation technologies (64QAM, 16QAM, QPSK and the like, multi-gear adjustable), low-complexity LDPC coding/decoding/RS/BCH codes (coding mode and code rate adjustable), interleaving and de-interleaving, channel estimation/equalization, an E-band vacuum amplification module and an intelligent reconfigurable surface can be adopted in the E-band ultra-large capacity transmission system, so that the long-distance ultra-wideband transmission with the single-flow peak rate not lower than 25Gbps is realized. On the basis, the system can be expanded to 100Gbps in a mode of polarization multiplexing plus 2 multiplied by 2 line-of-sight MIMO multiplexing, uplink and downlink transmission is respectively realized on two common working frequency bands (71-76GHz and 81-86GHz) of an E wave band, and the capacity of the uplink and downlink systems is 200Gbps in total.
In specific implementation, the millimeter wave front-end subsystem comprises a power amplification module and mainly completes amplification of E-band signals, and the power amplification module is realized by adopting an E-band vacuum amplification module in consideration of influence of E-band atmospheric attenuation on a communication link, so that guarantee is provided for long-distance transmission of wireless communication. As shown in fig. 2, it is a schematic diagram of a connection structure of a millimeter wave front-end subsystem and a dual-polarized antenna, and the antenna module mainly completes transmission, reception, and amplification of millimeter wave signals.
In an implementation manner, the E-band based wireless communication system provided in this embodiment of the present invention may further include an information processing subsystem 14, where the information processing subsystem 14 is connected to the communication processing subsystem 11 through a PCI-E (bus interface) and/or an ethernet port, where:
the communication processing subsystem 11 is specifically configured to receive a baseband signal and a control signal transmitted from the information processing subsystem 14 through the PCI-E interface and/or the ethernet port; and transmit baseband signals and control signals to information processing subsystem 14 via the PCI-E interface and/or ethernet port.
In specific implementation, the information processing subsystem 14 mainly provides the communication processing subsystem 11 with original excitation information in various formats such as text, message, high-definition image, video, etc., and analyzes, processes, distributes, and displays data received by the communication subsystem. Meanwhile, the information processing subsystem 14 provides a control signal for the communication processing subsystem 11, and the control signal selects system parameters of the baseband signal, such as scrambling mode, coding mode, interleaving mode, modulation mode, and transmission power.
Fig. 3 is a schematic diagram of a transmit path of a communication processing subsystem. Based on the transmission path shown in fig. 3, an embodiment of the present invention provides a method for transmitting a wireless communication signal based on an E-band, as shown in fig. 4, including the following steps:
and S41, the baseband signal processing module receives the baseband signal and the control signal.
And S42, the baseband signal processing module performs specific scrambling, coding, interleaving, modulation, digital predistortion compensation and transmission power setting processing on the baseband signal according to the control signal.
And S43, the baseband signal processing module transmits the processed baseband signal to the radio frequency signal processing module.
And S44, the radio frequency signal processing module converts the baseband signal into an E-band signal through up-conversion and transmits the E-band signal to the millimeter wave front-end subsystem.
FIG. 5 is a schematic diagram of a receive path of a communication processing subsystem. Based on the transmission path shown in fig. 5, an embodiment of the present invention provides a method for receiving a wireless communication signal based on an E-band, as shown in fig. 6, which may include the following steps:
s61, the radio frequency signal processing module receives E wave band signals from the millimeter wave front end subsystem;
s62, the radio frequency signal processing module converts the received E-band signal into a baseband signal through down conversion;
and S63, the radio frequency signal processing module transmits the baseband signal to the baseband signal processing module, and the baseband signal is processed by the baseband signal processing module and then output.
In the wireless communication system based on the E band provided by the embodiment of the invention, the system architecture working frequency band covers the E band, wherein the uplink working frequency band is 71-76GHz, and the downlink working frequency band is 81-86 GHz. The communication system can realize full duplex work, the uplink and downlink peak transmission rates are both 100Gbps, and the total peak transmission rate of the system is 200 Gbps. The E-band vacuum amplification module is adopted in the millimeter wave front end, the power of a 1dB compression point is more than or equal to 50W, the small signal gain is more than or equal to 40dB, the power amplification efficiency is more than or equal to 30%, and the long-distance wireless communication of 100km between the air and the ground can be realized by utilizing the high output power of the E-band vacuum amplification module. According to the invention, the reflective intelligent reconfigurable surface is adopted as the millimeter wave transmitting antenna, the antenna gain is more than or equal to 50dB, and compared with the traditional phased array antenna, the cost and the power consumption of the antenna array can be greatly reduced. In specific implementation, a carrier aggregation mode can be adopted to form a complete 5GHz ultra-wideband intermediate-frequency signal, the whole signal bandwidth of an uplink or downlink channel is divided into four sub-frequency bands, each 1.25GHz bandwidth is subjected to frequency conversion to a proper frequency band, and the frequency band is digitally synthesized and output from a DA. The invention adopts a digital predistortion compensation mode, realizes the nonlinear compensation of the power amplifier, improves the linearity and the power efficiency of the power amplifier, and realizes that the in-band flatness of 5GHz bandwidth signals in a communication link is less than +/-2 dB. The invention adopts the broadband digital attenuator in the transmitting path, can realize multi-level adjustable output power, can dynamically adjust the transmitting power according to the state of a communication link, and improves the stability of a communication system. If the maximum output power is 1, the adjustable power gear is 0.5, 0.25, 0.125, 0.0625, etc. The invention adopts the radio frequency working module consisting of the low noise amplifier, the multistage intermediate frequency amplifier and the radio frequency amplifier, and ensures that the noise coefficient of a receiving channel is less than or equal to 5 dB. And the information processing subsystem and the communication processing subsystem adopt a PCI-E interface and an Ethernet interface to realize the receiving and sending of the original data and the control instruction. Wherein the PCI-E interface is preferably PCI-E3.0X 8 interface or X16 interface (double X8 interface), and the Ethernet interface is preferably 25G or 40G Ethernet interface.
According to the embodiment of the invention, an ultra-wideband (uplink 5GHz and downlink 5GHz), ultra-large capacity (the uplink and the downlink are 200Gbps in total) and full-duplex wireless communication system is realized depending on the ultra-wideband spectrum resource of the E waveband, and the ultra-wideband (the uplink and the downlink) wireless communication system has the communication capacity of equivalent optical fibers (100Gbps level). The frequency spectrum efficiency of the system is greatly improved through polarization multiplexing and 2 multiplied by 2 line-of-sight MIMO multiplexing. The E-band vacuum amplification module is adopted in the millimeter wave front end, the power of a 1dB compression point of the E-band vacuum amplification module is more than or equal to 50W, and the high output power of the E-band vacuum amplification module is utilized to realize the E-band remote wireless communication. The invention adopts the reflective intelligent reconfigurable surface as the transmitting antenna, and can greatly reduce the cost and power consumption of the antenna array compared with the traditional phased array antenna. The invention can adaptively select the optimal modulation format according to the communication link state, the modulation format comprises but is not limited to 64QAM, 16QAM, QPSK and the like, the multi-gear adjustability of the data transmission rate is realized, and the reliability and the stability of the system transmission in a severe environment are ensured. The invention can self-adaptively select the optimal coding format according to the communication link state, wherein the coding format comprises but is not limited to LDPC, RS, Polar and the like, and supports the dynamic adjustment of the coding code rate, thereby ensuring the transmission reliability and stability of the system in severe environment. The invention adopts a carrier aggregation mode to form a complete 5GHz ultra-wideband intermediate frequency signal, divides the whole signal bandwidth of an uplink or downlink channel into four sub-frequency bands, each 1.25GHz bandwidth, and outputs the signal from DA after each branch is subjected to frequency conversion to a proper frequency band through digital synthesis, thereby greatly reducing the complexity of system realization and ensuring the reliability and stability of system transmission. The invention adopts the digital predistortion compensation module, realizes the nonlinear compensation of the power amplifier, improves the linearity and the power efficiency of the power amplifier, and realizes that the in-band flatness of 5GHz bandwidth signals in a communication link is less than +/-2 dB. The invention adopts the broadband digital attenuator in the transmitting path, can realize multi-level adjustable output power, can dynamically adjust the transmitting power according to the state of a communication link, and improves the transmission stability of a communication system. The invention adopts the radio frequency working module consisting of the low noise amplifier, the multistage intermediate frequency amplifier and the radio frequency amplifier, and ensures that the noise coefficient of a receiving channel is less than or equal to 5 dB.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
In some possible embodiments, a computing device according to the present invention may include at least one processor, and at least one memory. Wherein the memory stores program code which, when executed by the processor, causes the processor to perform the steps of the E-band-based wireless signal transmitting and receiving method according to various exemplary embodiments of the present invention described above in this specification.
In some possible embodiments, the aspects of the E-band based wireless signal transmission and reception method according to the present invention may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of the E-band based wireless signal transmission and reception method according to various exemplary embodiments of the present invention described above in this specification when the program product is run on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for solid state disk wear leveling of embodiments of the present invention may employ a portable compact disk read only memory (CD-ROM) and include program code, and may be run on a computing device. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device over any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., over the internet using an internet service provider).
While the present invention has been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a wireless communication system based on E wave band, its characterized in that, wireless communication system working frequency band based on E wave band covers E wave band, and wherein, the ascending working frequency band is 71-76GHz, and the descending working frequency band is 81-86GHz, including communication processing subsystem and millimeter wave front end subsystem and dual polarized antenna, communication processing subsystem includes baseband signal processing module and radio frequency signal processing module, millimeter wave front end subsystem includes power amplification module, wherein:
the communication processing subsystem is used for receiving baseband signals and control signals through the baseband signal processing module, performing specific scrambling, coding, interleaving, modulation, digital pre-distortion compensation and transmitting power setting processing on the baseband signals according to the control signals, and transmitting the processed baseband signals to the radio frequency signal processing module; the radio frequency signal processing module converts a baseband signal into an E-band signal through up-conversion and transmits the E-band signal to the millimeter wave front-end subsystem;
the millimeter wave front-end subsystem is used for transmitting the received E-band signal to the dual-polarized antenna after the power amplification module performs power amplification on the received E-band signal;
the dual-polarized antenna is used for transmitting the received E-band signal.
2. The system of claim 1,
the dual-polarized antenna is also used for receiving E-band signals and transmitting the E-band signals to the millimeter wave front end subsystem;
the millimeter wave front-end subsystem is also used for transmitting the received E-band signal to the communication processing subsystem;
the communication processing subsystem is used for receiving the E-band signals through the radio frequency signal processing module, converting the received E-band signals into baseband signals through down-conversion, transmitting the baseband signals to the baseband signal processing module and outputting the baseband signals by the baseband signal processing module.
3. The system of claim 2, wherein the E-band based wireless communication system further comprises an information processing subsystem, the information processing subsystem being connected to the communication processing subsystem via a bus interface PCI-E and/or an ethernet port, wherein:
the communication processing subsystem is specifically configured to receive a baseband signal and a control signal transmitted by the information processing subsystem through the PCI-E interface and/or the ethernet port; and transmitting the baseband signal and the control signal to the information processing subsystem through the PCI-E interface and/or the Ethernet port.
4. The system of claim 1, wherein the power amplification module comprises an E-band vacuum amplification module.
5. The system according to any one of claims 1 to 4, wherein the dual polarized antenna employs polarization multiplexing and 2 x 2 line-of-sight multiple-input multiple-output MIMO technology for transmitting E-band signals.
6. The system of claim 5, wherein the dual polarized antenna employs a reflective smart reconfigurable surface.
7. A method for transmitting a wireless communication signal based on E-band, the method being applied in a communication processing subsystem as claimed in any one of claims 1 to 6, the method comprising:
the baseband signal processing module receives a baseband signal and a control signal;
the control signal is adaptively adjusted according to the actual link state;
the baseband signal processing module carries out specific scrambling, coding, interleaving, modulation, digital pre-distortion compensation processing and transmitting power setting on the baseband signal according to a control signal;
the baseband signal processing module transmits the processed baseband signal to the radio frequency signal processing module;
the radio frequency signal processing module converts baseband signals into E-band signals through up-conversion and transmits the E-band signals to the millimeter wave front-end subsystem.
8. A method for receiving a wireless communication signal based on an E-band, the method being applied to a communication processing subsystem as claimed in any one of claims 1 to 6, the method comprising:
the radio frequency signal processing module receives an E waveband signal from the millimeter wave front-end subsystem;
the radio frequency signal processing module converts the received E-band signal into a baseband signal through down conversion;
and the radio frequency signal processing module transmits the baseband signal to the baseband signal processing module and the baseband signal is output by the baseband signal processing module.
9. A computing device, the computing device comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 7 or 8.
10. A computer storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method according to any one of claims 7 or 8.
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