WO2021042724A1 - Procédé et appareil anti-interférences pour système ofdm, dispositif électronique et support de stockage - Google Patents

Procédé et appareil anti-interférences pour système ofdm, dispositif électronique et support de stockage Download PDF

Info

Publication number
WO2021042724A1
WO2021042724A1 PCT/CN2020/084537 CN2020084537W WO2021042724A1 WO 2021042724 A1 WO2021042724 A1 WO 2021042724A1 CN 2020084537 W CN2020084537 W CN 2020084537W WO 2021042724 A1 WO2021042724 A1 WO 2021042724A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
power value
interference
interference signal
ofdm
Prior art date
Application number
PCT/CN2020/084537
Other languages
English (en)
Chinese (zh)
Inventor
缪永龙
刘亮
Original Assignee
深圳市富斯科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市富斯科技有限公司 filed Critical 深圳市富斯科技有限公司
Publication of WO2021042724A1 publication Critical patent/WO2021042724A1/fr

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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation

Definitions

  • the invention belongs to the technical field of OFDM wireless broadband transmission, and relates to a method, a device, electronic equipment and a storage medium for eliminating interference signals at a receiving end in an OFDM system.
  • the existing OFDM wireless broadband transmission anti-interference technology has technical problems of large delay and low efficiency.
  • the OFDM system anti-interference method includes:
  • the signal average power value and signal power value judge whether there is an interference signal in the OFDM unit
  • the step of judging whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value includes: if there is no interference signal, the signal is output normally.
  • the step of judging whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value includes: if the signal power value is greater than the signal average power value, then there is an interference signal.
  • the interference signal is a narrowband interference signal and/or a single-frequency interference signal and/or a multi-frequency interference signal.
  • the power value of the interference signal position is set to 0.
  • the present invention also provides an electronic device, including a memory and a processor, the memory stores a computer program, and the computer program can be executed in the processor to implement any of the above methods.
  • the present invention also provides a storage medium that stores a computer program, and the execution of the computer program in the processor can realize any of the above-mentioned methods.
  • the present invention also provides an OFDM system anti-interference device, including:
  • Synchronous receiving module used to synchronously receive signals at the receiving end of the OFDM system
  • the calculation module is used to calculate the average power value and signal power value of the signal by using the OFDM symbol as the unit;
  • the judgment module is used to judge whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value;
  • Elimination module if there is an interference signal, eliminate the interference signal.
  • an output module which is used to output signals normally when there is no interference signal.
  • the judgment module includes an analysis unit; the analysis unit is used to analyze the presence of interference signals when the signal power value is greater than the signal average power value.
  • the interference signal is a narrowband interference signal and/or a single-frequency interference signal and/or a multi-frequency interference signal.
  • the present invention provides an OFDM system anti-interference method.
  • the OFDM symbol is used as a unit to calculate the average power value and the signal power value of the signal, and then determine whether there is an interference signal in the OFDM unit according to the average signal power value and the signal power value, If there is an interference signal, the interference signal power value is set to 0 to eliminate the interference signal, so that the process of eliminating the interference signal is simple, the technical effect of saving resources, and there is no delay, and the technical effect of improving efficiency is achieved.
  • FIG. 1 is a flowchart of an OFDM system anti-interference method provided by an embodiment
  • FIG. 2 is a flowchart of an improved method of the method in FIG. 1 provided by an embodiment
  • FIG. 3 is a flowchart of an improved method of the method in FIG. 1 provided by an embodiment
  • Figure 4 is a structural diagram of an electronic device provided by an embodiment
  • FIG. 5 is a structural diagram of an OFDM system anti-interference method provided by an embodiment
  • Fig. 6 is an improved device architecture diagram of the device in Fig. 5.
  • OFDM Orthogonal Frequency Division Multiplexing
  • storage medium can be ROM, RAM, Various media such as magnetic disks or optical disks that can store computer programs.
  • processor can be CPLD (Complex Programmable Logic Device), FPGA (Field-Programmable Gate Array), MCU (Microcontroller Unit), PLC (Programmable Logic) Controller: Programmable logic controller) and CPU (Central Processing Unit: Central Processing Unit) and other chips or circuits with data processing functions.
  • electronic device can be any device with data processing functions and storage functions, and can generally include fixed terminals and mobile terminals, fixed terminals such as desktop computers, and mobile terminals such as mobile phones, PADs, and mobile robots.
  • the technical features involved in the different embodiments of the present invention described later can be combined with each other as long as they do not conflict with each other.
  • OFDM technology is widely used in broadband transmission systems such as 5G communication and UAV image transmission.
  • Narrow-band interference signals will seriously affect the quality of communication.
  • frequency hopping anti-interference technologies are used. , So as to realize the stability of signal transmission.
  • the existing OFDM technology can achieve a certain degree of anti-interference ability
  • the anti-interference technology needs to fully combine the information of the transmitter and the receiver to switch between frequency bands to avoid interference sources, and the implementation process is complicated and there is a delay.
  • the method of using the power information of the receiving end to remove the interference source proposed in the present invention does not bring about system delay, and the realization process is simple, and the technical effect of effectively improving efficiency and communication quality is achieved.
  • FIG. 1 is a flowchart of an OFDM system anti-interference method provided by an embodiment, and shows an OFDM system anti-interference method to solve the above technical problem.
  • an OFDM system anti-interference method includes:
  • Step S10 synchronously receive signals at the receiving end of the OFDM system
  • Step S11 Calculate the average power value and signal power value of the signal by using the OFDM symbol as the unit;
  • Step S12 judging whether there is an interference signal in the OFDM unit according to the average power value and the signal power value;
  • step S13 if there is an interference signal, the interference signal is eliminated.
  • the signal is received synchronously at the receiving end of the OFDM system, and the signal is calculated in units of OFDM symbols to calculate the average power value and signal power value of the signal, and then determine the OFDM unit based on the average signal power value and signal power value If there is an interference signal in the OFDM system, if there is an interference signal, set the power value of the interference signal position to 0 to eliminate the interference signal, so as to simply and effectively eliminate the interference signal in the OFDM system and achieve the technical effect of effectively improving the efficiency. .
  • the anti-interference method of the OFDM system may be to receive the signal at the receiving end of the OFDM system.
  • the signal of each OFDM symbol is calculated by taking the OFDM symbol as the unit.
  • the power value of the OFDM symbol signal is calculated separately.
  • the signal power value is greater than the average signal power value of the OFDM signal
  • there is an interference source near the signal Preferably, the signal near the left and The N units on the right or the signal power value of the interference signal are assigned as zero, so as to eliminate the influence of signal inaccuracy caused by interference.
  • the OFDM symbol unit is the FFT length.
  • the power value of the signal is the sub-carrier power value.
  • the interference signal may be a narrowband interference signal, a single-frequency interference signal, or a multi-frequency interference signal.
  • Fig. 2 is a flowchart of an improved method of the method in Fig. 1 provided by an embodiment, showing an improved method of an OFDM system anti-interference method to solve the technical problem of task execution conflict.
  • the method in Fig. 1 further includes:
  • Step S20 judging whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value;
  • step S21 if there is no interference signal, the signal is output normally.
  • the signal is output normally, so as to achieve the technical effect of improving efficiency.
  • Fig. 3 is a flowchart of an improved method of the method in Fig. 1 provided by an embodiment, showing an improved method of an OFDM system anti-interference method to solve how to determine whether there is an interference signal.
  • the method in Fig. 1 further includes:
  • Step S11 judging whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value;
  • step S120 if the signal power value is greater than the signal average power value, there is an interference signal.
  • the signal power value is greater than the OFDM unit symbol average power value by calculating the signal average power value of multiple OFDM unit symbols. If it is greater than the average power value of the OFDM unit symbol, there is an interference signal, thereby determining the interference signal and eliminating the interference in the OFDM system Signal, to achieve the technical effect of effective signal transmission.
  • the signal average power value of the OFDM unit symbol can be calculated by root-saving the average value of the OFDM symbol power value or the OFDM symbol power value multiplied by N, where N is any positive real number.
  • Fig. 4 is a structural diagram of an electronic device provided by an embodiment, showing an electronic device for storing and processing computer programs.
  • an electronic device includes a memory and a processor, and the memory stores a computer program.
  • the execution of the computer program in the processor can implement any of the methods shown in FIGS. 1-3.
  • a storage medium is further provided, and the storage medium stores a computer program, and the computer program is executed in the processor to implement any of the methods shown in FIGS. 1-3.
  • FIG. 5 is a structural diagram of an OFDM system anti-interference apparatus provided by an embodiment.
  • the OFDM system anti-interference apparatus includes:
  • the synchronous receiving module 40 is used to synchronously receive signals at the receiving end of the OFDM system
  • the calculation module 41 is used to calculate the average power value and the signal power value of the signal by using the OFDM symbol as a unit;
  • the judging module 42 is configured to judge whether there is an interference signal in the OFDM unit according to the signal average power value and the signal power value;
  • the elimination module 43 if there is an interference signal, is used to eliminate the interference signal.
  • the synchronous receiving module 40 synchronously receives the signal at the receiving end of the OFDM system, and then transmits the signal to the calculation module 41, which is used to calculate the average power value and signal power value of the signal in units of OFDM symbols, and then transmit The signal average power value and signal power value are sent to the judging module 42 for judging whether there is an interference signal in the OFDM unit according to the average power value and the signal power value. If there is an interference signal, it is transmitted to the cancellation module 43 to eliminate the interference signal. Therefore, the interference signal in the OFDM system can be eliminated simply and effectively, and the technical effect of effectively improving the efficiency can be achieved.
  • the OFDM system anti-interference device may be that the synchronization module 40 receives signals at the receiving end of the OFDM system.
  • the calculation module 41 uses the OFDM symbol as a unit to calculate Obtain the average power of each OFDM symbol, and calculate the power value of the OFDM symbol signal separately.
  • the judgment module 42 both determines that there is an interference source near the signal, preferably Ground, the cancellation module 43 assigns the signal power values of the N units on the left and right sides of the signal to zero to eliminate the influence of signal inaccuracy caused by interference.
  • the OFDM symbol unit is the FFT length.
  • the power value of the signal is the sub-carrier power value.
  • the interference signal may be a narrowband interference signal, a single-frequency interference signal, or a multi-frequency interference signal.
  • FIG. 6 is an improved device architecture diagram of the device in FIG. 5, showing an anti-interference device of the OFDM system.
  • the anti-interference apparatus of the OFDM system in Fig. 5 further includes:
  • the analyzing unit 420 is configured to analyze the presence of interference signals when the signal power value is greater than the signal average power value.
  • the analysis unit 420 determines whether there is an interference signal by comparing the signal power value greater than the signal average power value, so as to eliminate the interference signal and achieve the technical effect of effectively improving efficiency and communication quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne le domaine technique des transmissions large bande sans fil OFDM. En recevant un signal de manière synchrone au niveau d'une extrémité de réception d'un système OFDM, puis en calculant une valeur de puissance moyenne de signal et une valeur de puissance de signal pour le signal en prenant un symbole OFDM en tant qu'unité, puis en déterminant, en fonction de la valeur de puissance moyenne de signal et de la valeur de puissance de signal, s'il y a un signal d'interférence dans l'unité OFDM et, s'il y a un signal d'interférence, en éliminant le signal d'interférence, le signal d'interférence dans le système OFDM est éliminé simplement et efficacement, ce qui permet d'obtenir l'effet technique d'amélioration efficace de l'efficacité et de la qualité de communication.
PCT/CN2020/084537 2019-09-04 2020-04-13 Procédé et appareil anti-interférences pour système ofdm, dispositif électronique et support de stockage WO2021042724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910833712.4 2019-09-04
CN201910833712.4A CN110401610A (zh) 2019-09-04 2019-09-04 Ofdm系统抗干扰的方法、装置与电子设备及存储介质

Publications (1)

Publication Number Publication Date
WO2021042724A1 true WO2021042724A1 (fr) 2021-03-11

Family

ID=68329661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/084537 WO2021042724A1 (fr) 2019-09-04 2020-04-13 Procédé et appareil anti-interférences pour système ofdm, dispositif électronique et support de stockage

Country Status (2)

Country Link
CN (1) CN110401610A (fr)
WO (1) WO2021042724A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110401610A (zh) * 2019-09-04 2019-11-01 深圳市富斯科技有限公司 Ofdm系统抗干扰的方法、装置与电子设备及存储介质
CN111162806B (zh) * 2019-11-21 2021-04-30 南京码讯光电技术有限公司 一种无线宽带系统的窄带干扰检测及消除方法和系统
CN112217530B (zh) * 2020-09-04 2022-07-15 北京四季豆信息技术有限公司 窄带干扰检测及抑制方法、装置、芯片、设备和存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102075481A (zh) * 2009-11-25 2011-05-25 北京泰美世纪科技有限公司 Ofdm系统中子载波间干扰消除的方法及装置
WO2014094460A1 (fr) * 2012-12-18 2014-06-26 中兴通讯股份有限公司 Appareil et procédé de détection d'interférences dans un spectre de fréquences
CN104283831A (zh) * 2013-07-08 2015-01-14 普天信息技术研究院有限公司 一种通信系统中确定参考信号接收质量的方法
CN105959246A (zh) * 2016-04-22 2016-09-21 上海瀚讯无线技术有限公司 一种抗干扰方法
CN110401610A (zh) * 2019-09-04 2019-11-01 深圳市富斯科技有限公司 Ofdm系统抗干扰的方法、装置与电子设备及存储介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8274941B2 (en) * 2008-11-10 2012-09-25 Industrial Technology Research Institute Apparatus and method for subcarrier scrambling
CN101977066B (zh) * 2010-10-21 2013-08-28 上海华为技术有限公司 窄带干扰的抑制方法、装置及网络系统
CN105519019B (zh) * 2013-05-27 2017-07-21 华为技术有限公司 一种检测干扰信号的方法及装置
CN104301280B (zh) * 2014-10-22 2017-08-25 国网重庆市电力公司电力科学研究院 一种基于ofdm的电力线载波周期脉冲噪声检测和抑制方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102075481A (zh) * 2009-11-25 2011-05-25 北京泰美世纪科技有限公司 Ofdm系统中子载波间干扰消除的方法及装置
WO2014094460A1 (fr) * 2012-12-18 2014-06-26 中兴通讯股份有限公司 Appareil et procédé de détection d'interférences dans un spectre de fréquences
CN104283831A (zh) * 2013-07-08 2015-01-14 普天信息技术研究院有限公司 一种通信系统中确定参考信号接收质量的方法
CN105959246A (zh) * 2016-04-22 2016-09-21 上海瀚讯无线技术有限公司 一种抗干扰方法
CN110401610A (zh) * 2019-09-04 2019-11-01 深圳市富斯科技有限公司 Ofdm系统抗干扰的方法、装置与电子设备及存储介质

Also Published As

Publication number Publication date
CN110401610A (zh) 2019-11-01

Similar Documents

Publication Publication Date Title
WO2021042724A1 (fr) Procédé et appareil anti-interférences pour système ofdm, dispositif électronique et support de stockage
US9461850B2 (en) Parallel data processing
WO2021259013A1 (fr) Procédé et appareil de traitement de données, dispositif électronique et support lisible par ordinateur
US8756269B2 (en) Monitoring a path of a transaction across a composite application
CN111465051B (zh) Sinr的估计方法、系统、电子设备和存储介质
WO2020125455A1 (fr) Procédé et appareil de traitement de signaux
WO2023185578A1 (fr) Procédé, appareil, dispositif de détection d'activité vocale et support de stockage
WO2022100578A1 (fr) Procédé de transformation de multiplexage par répartition orthogonale de la fréquence dans un système 5g et produit associé
CN114095110A (zh) 一种提高频谱数据传输的同步性方法及系统
CN111918353B (zh) 移动终端的邻区信号测量的方法及装置
WO2015099759A1 (fr) Schéma de détermination de position
WO2014180128A1 (fr) Procédé et dispositif d'accès pour réduire le facteur de crête maximum dans un système de multiplexage par répartition orthogonale de la fréquence
WO2021093862A1 (fr) Procédé et appareil de fenêtrage dans le domaine temporel ofdm
WO2022017216A1 (fr) Procédé et appareil de détermination de puissance de réception de signal de référence, dispositif, et support de stockage
CN111402905A (zh) 音频数据恢复方法、装置及蓝牙设备
WO2022156801A1 (fr) Procédé permettant de déterminer la validité d'une occasion de transmission d'un signal de référence, et équipement utilisateur
WO2021073632A1 (fr) Procédé et appareil de fusion de données d'un canal d'accès aléatoire physique, et support de stockage
WO2017054514A1 (fr) Procédé et dispositif de configuration de fréquence pilote
WO2020211435A1 (fr) Dispositif, procédé et système de transmission d'informations, et climatiseur associé
CN111181889B (zh) 频偏估计样本接收控制方法、系统、设备及存储介质
WO2017129009A1 (fr) Procédé et appareil de détection de signal
JP2023509288A (ja) オーディオベースのデータ伝送の振幅等化
CN110933009A (zh) 频偏估计方法、系统、电子设备及存储介质
US11979908B2 (en) Method, device, terminal and system for transmitting data
CN117319529B (zh) 应用于车端的报文解析方法、装置、电子设备及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20861267

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20861267

Country of ref document: EP

Kind code of ref document: A1