CN109547379A - A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation - Google Patents
A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation Download PDFInfo
- Publication number
- CN109547379A CN109547379A CN201811522705.4A CN201811522705A CN109547379A CN 109547379 A CN109547379 A CN 109547379A CN 201811522705 A CN201811522705 A CN 201811522705A CN 109547379 A CN109547379 A CN 109547379A
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- demodulation
- lte
- baseband
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
Abstract
The invention discloses a kind of devices of LTE-A MIMO signal carrier wave polymerization demodulation, and in particular to mobile communication technology field.The equipment demodulated which solve current support LTE-A MIMO signal carrier wave polymerization is less, and precision is low, cannot achieve the deficiency of Real-time demodulation.The device of LTE-A MIMO signal carrier wave polymerization demodulation, including sequentially connected radio-frequency module, ifd module, baseband module and main control module；Radio-frequency module, by mixing, filtering and power adjustment, obtains high-precision baseband signal to input signal；Ifd module to the baseband signal of radio frequency input module by 8 tunnel real-time Transmission of SRIO4x protocol realization, and by the carrier transformation of polymerization to independent time-domain signal；Data are resolved to source code flow by baseband module, and are transmitted to main control module by network interface；Main control module receives data that baseband module transmission comes by network interface and carries out display and the calculating of partial test example.
Description
Technical field
The present invention relates to mobile communication technology fields, and in particular to a kind of dress of LTE-A MIMO signal carrier wave polymerization demodulation
It sets.
Background technique
LTE is based on OFDMA technology, the universal standard organized to set up by 3GPP, including FDD and TDD both of which
For paired spectrum and non-paired frequency spectrum, MIMO (multiple-input and multiple-output) refers to uses multiple hairs in transmitting terminal and receiving end respectively
Antenna and receiving antenna are penetrated, make signal by the transmission of the mutiple antennas of transmitting terminal and receiving end and is received, so as to improve communication matter
Amount.It can make full use of space resources, realize multiple-input multiple-output by mutiple antennas, not increase frequency spectrum resource and antenna transmitting function
In the case where rate, system channel capacity can be increased exponentially.
CC (carrier wave polymerization), which refers to, to condense together multiple carrier waves to obtain bigger transmission bandwidth and (be up to
100MHz).In existing LTE, single maximum bandwidth of cell has been limited at 20MHz, in order to enable UE can obtain it is bigger
Uplink and downlink rate, therefore carrier aggregation technology is used, the equipment for supporting the polymerization demodulation of LTE-A MIMO signal carrier wave at present is less, essence
It spends low, cannot achieve Real-time demodulation.
Summary of the invention
The purpose of the present invention is in view of the above deficiencies, propose a kind of LTE-A that can be realized high-precision Real-time demodulation
The device of MIMO signal carrier wave polymerization demodulation.
The present invention specifically adopts the following technical scheme that
A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation, including sequentially connected radio-frequency module, ifd module,
Baseband module and main control module；
The radio-frequency module, by mixing, filtering and power adjustment, obtains high-precision baseband signal to input signal；
The ifd module passes through 8 tunnel real-time Transmission of SRIO4x protocol realization to the baseband signal of radio frequency input module, and
By the carrier transformation of polymerization to independent time-domain signal；
Data are resolved to source code flow by the baseband module, and are transmitted to main control module by network interface；
The main control module receives data that baseband module transmission comes by network interface and carries out display and partial test example
It calculates.
Preferably, input signal is mixed by radio-frequency module with local oscillation signal generates mixed frequency signal, and mixed frequency signal passes through switch
Filter is filtered, and carries out power adjustment by attenuator, and the signal after power adjustment is sent to ifd module.
Preferably, the baseband signal includes that 8 roads enter after ifd module crosses the AD sampling of intermediate frequency to 8 road base band datas
FPGA, FPGA pass through SRIO 4x agreement for 8 circuit-switched datas to DSP, realize the real-time Transmission of base band data.
Preferably, FPGA carries out FFT first and operates to obtain the frequency domain data of three carrier waves, carries out again after frequency spectrum shift
Ifft operation, separates the time domain data per road-load wave, is then transferred directly in the DDR of DSP by SRIO, into Base-Band Processing
Module.
Preferably, the DSP in the baseband module is for received data, carry out FFT, when offset estimation and channel equalization
After operation, it is resolved to modulation domain, and test case index is transferred to main control module by network interface, then again to the data of modulation domain
Code block segmentation, solution rate-matched, decoding and verification operation are carried out, source code flow is finally obtained.
Preferably, the main control module carries out test case analysis according to 3GPP agreement.
The invention has the following beneficial effects:
The present invention provides a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation, the received signal qualities of the device
Index complies fully with requirement of the 3GPP agreement to the polymerization demodulation of TE-A MIMO signal carrier wave；
It uses carrier aggregation technology that UE is enabled to obtain bigger uplink and downlink rate, supports that LTE-A MIMO signal carrier wave is poly-
Demodulation is closed, precision is low, can be realized Real-time demodulation.
Detailed description of the invention
Fig. 1 is the apparatus structure block diagram of LTE-A MIMO signal carrier wave polymerization demodulation.
Specific embodiment
A specific embodiment of the invention is described further in the following with reference to the drawings and specific embodiments:
As shown in Figure 1, a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation, including sequentially connected radio frequency mould
Block, ifd module, baseband module and main control module；
Radio-frequency module, by mixing, filtering and power adjustment, obtains high-precision baseband signal to input signal；Radio frequency mould
Input signal is mixed by block with local oscillation signal generates mixed frequency signal, and mixed frequency signal is filtered by switch filter, by declining
Subtract device and carry out power adjustment, and the signal after power adjustment is sent to ifd module.
Ifd module passes through 8 tunnel real-time Transmission of SRIO4x protocol realization to the baseband signal of radio frequency input module, and will gather
The carrier transformation of conjunction is to independent time-domain signal；
Data are resolved to source code flow by baseband module, and are transmitted to main control module by network interface；Baseband signal includes 8
Road after ifd module crosses the AD sampling of intermediate frequency to 8 road base band datas, passes through SRIO 4x agreement for 8 numbers into FPGA, FPGA
According to DSP is given, the real-time Transmission of base band data is realized, FPGA carries out FFT first and operates to obtain the frequency domain data of three carrier waves, through overfrequency
Spectrum carries out ifft operation again after moving, separate the time domain data per road-load wave, the DDR of DSP is then transferred directly to by SRIO
It is interior, into baseband processing module.
DSP in baseband module for received data, carry out FFT, when offset estimation and channel equalization operations after, parsing
Main control module is transferred to by network interface to modulation domain, and by test case index, then the data of modulation domain are carried out with code block point again
It cuts, solve rate-matched, decoding and verification operation, finally obtain source code flow.
Main control module receives data that baseband module transmission comes by network interface and carries out display and the calculating of partial test example,
Main control module carries out test case analysis according to 3GPP agreement, for test cases such as EVM, planispheres, is directly passed by baseband module
Defeated network interface data is shown.For test cases such as ACLR, spectral emission templates, can directly be counted according to baseband signal
Calculate display.
Attached drawing in other documentary evidences gives the EVM index of this transmitting apparatus signal, and wherein EVM reflects this signal
Modulation accuracy is the important measurement index of signal quality, and each channel EVM value in embodiment is up to 1.19%, is complied fully with
3GPP protocol requirement.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (6)
1. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation, which is characterized in that including sequentially connected radio-frequency module,
Ifd module, baseband module and main control module；
The radio-frequency module, by mixing, filtering and power adjustment, obtains high-precision baseband signal to input signal；
The ifd module passes through 8 tunnel real-time Transmission of SRIO4x protocol realization to the baseband signal of radio frequency input module, and will gather
The carrier transformation of conjunction is to independent time-domain signal；
Data are resolved to source code flow by the baseband module, and are transmitted to main control module by network interface；
The main control module receives data that baseband module transmission comes by network interface and carries out display and the calculating of partial test example.
2. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation as described in claim 1, which is characterized in that radio frequency mould
Input signal is mixed by block with local oscillation signal generates mixed frequency signal, and mixed frequency signal is filtered by switch filter, by declining
Subtract device and carry out power adjustment, and the signal after power adjustment is sent to ifd module.
3. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation as described in claim 1, which is characterized in that the base
Band signal includes 8 tunnels, after ifd module crosses the AD sampling of intermediate frequency to 8 road base band datas, passes through SRIO 4x into FPGA, FPGA
8 circuit-switched datas to DSP, are realized the real-time Transmission of base band data by agreement.
4. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation as claimed in claim 3, which is characterized in that FPGA is first
It first carries out FFT to operate to obtain the frequency domain data of three carrier waves, carries out ifft operation again after frequency spectrum shift, separate per road-load wave
Then time domain data is transferred directly in the DDR of DSP by SRIO, into baseband processing module.
5. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation as described in claim 1, which is characterized in that the base
With the DSP in module for received data, carry out FFT, when offset estimation and channel equalization operations after, be resolved to modulation domain,
And test case index is transferred to main control module by network interface, then the data of modulation domain are carried out with code block segmentation, solution rate again
Matching, decoding and verification operation, finally obtain source code flow.
6. a kind of device of LTE-A MIMO signal carrier wave polymerization demodulation as described in claim 1, which is characterized in that the master
It controls module and carries out test case analysis according to 3GPP agreement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522705.4A CN109547379A (en) | 2018-12-13 | 2018-12-13 | A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522705.4A CN109547379A (en) | 2018-12-13 | 2018-12-13 | A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109547379A true CN109547379A (en) | 2019-03-29 |
Family
ID=65854949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522705.4A Pending CN109547379A (en) | 2018-12-13 | 2018-12-13 | A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109547379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268781A (en) * | 2021-12-23 | 2022-04-01 | 南京木马牛智能科技有限公司 | Sensor signal processing method based on VR feedback |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075125A1 (en) * | 2002-01-21 | 2005-04-07 | Bada Anna Marina | Method and mobile station to perform the initial cell search in time slotted systems |
| CN101378263A (en) * | 2007-08-31 | 2009-03-04 | 京信通信系统（中国）有限公司 | Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method |
| CN105979545A (en) * | 2016-06-01 | 2016-09-28 | 中国电子科技集团公司第四十研究所 | LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization |
| CN107425865A (en) * | 2017-04-18 | 2017-12-01 | 中国电子科技集团公司第四十研究所 | A kind of reception device of LTE A terminal signalings |
-
2018
- 2018-12-13 CN CN201811522705.4A patent/CN109547379A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075125A1 (en) * | 2002-01-21 | 2005-04-07 | Bada Anna Marina | Method and mobile station to perform the initial cell search in time slotted systems |
| CN101378263A (en) * | 2007-08-31 | 2009-03-04 | 京信通信系统（中国）有限公司 | Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method |
| CN105979545A (en) * | 2016-06-01 | 2016-09-28 | 中国电子科技集团公司第四十研究所 | LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization |
| CN107425865A (en) * | 2017-04-18 | 2017-12-01 | 中国电子科技集团公司第四十研究所 | A kind of reception device of LTE A terminal signalings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268781A (en) * | 2021-12-23 | 2022-04-01 | 南京木马牛智能科技有限公司 | Sensor signal processing method based on VR feedback |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106712779B (en) | A kind of FPGA+DSP hardware structure for 32 antenna multi-mode radio frequency uniformity tests | |
| US20210120435A1 (en) | Base station apparatus, terminal apparatus, and communication method | |
| US10433295B2 (en) | User device, base station, signal reception method, and signal transmission method | |
| CN109121153B (en) | A kind of communication means and device | |
| CN108282285A (en) | Method for transmitting signals and device | |
| CN104982001B (en) | The received method and apparatus of reference symbol | |
| WO2018202098A1 (en) | Method of wireless communication, network device and terminal device | |
| EP3654599A1 (en) | Transmission device, receiving device, and radio communication method | |
| KR20200067899A (en) | Method for determining resource region allocated to bandwidth portion in wireless communication system and apparatus therefor | |
| KR20190016467A (en) | Method and apparatus for transmitting and receiving reference signals in a wireless communication system | |
| EP2829101A1 (en) | Cyclic channel state information reference signal configuration for new carrier type with backward compatible segment | |
| EP3334210A1 (en) | User terminal, wireless base station, and wireless communication method | |
| CN108605351A (en) | User apparatus, base station and communication means | |
| CN102752010B (en) | A kind of transceiver module for the base station that communicates | |
| CN109474284A (en) | Radio architectures and mobile terminal | |
| WO2018231009A1 (en) | Method for transmitting or receiving reference signal in wireless communication system and apparatus therefor | |
| CN110383879A (en) | User terminal and wireless communications method | |
| US20220015085A1 (en) | Communication method and apparatus | |
| CN105979545A (en) | LTE-Advanced air interface technology analysis device based on 8 channel carrier wave polymerization | |
| CN110506412B (en) | Constellation diagram rotation method and device | |
| CN101984703B (en) | Method and device for determining downlink power of radio remote unit (RRU) | |
| WO2022247655A1 (en) | Method for determining nonlinear feature parameters of power amplifier, and related apparatus | |
| CN109547379A (en) | A kind of device of LTE-A MIMO signal carrier wave polymerization demodulation | |
| US20150085671A1 (en) | Method of Handling Measurement Pattern for TDD System and Related Communication Device | |
| US11310020B2 (en) | Method for performing channel estimation using DMRS in wireless communication system, and apparatus therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190329 |