WO2024001997A1 - 干扰抵消信号的生成方法及装置、信号处理设备、存储介质 - Google Patents

干扰抵消信号的生成方法及装置、信号处理设备、存储介质 Download PDF

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Publication number
WO2024001997A1
WO2024001997A1 PCT/CN2023/102349 CN2023102349W WO2024001997A1 WO 2024001997 A1 WO2024001997 A1 WO 2024001997A1 CN 2023102349 W CN2023102349 W CN 2023102349W WO 2024001997 A1 WO2024001997 A1 WO 2024001997A1
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signal
interference cancellation
cancellation signal
baseband
perform
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French (fr)
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王春旭
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ZTE Corp
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ZTE Corp
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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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements

Definitions

  • the present disclosure relates to the field of microwave communications, and specifically, to an interference cancellation signal generation method, an interference cancellation signal generation device, a signal processing device, and a computer-readable storage medium.
  • CCDP common-channel dual polarization
  • CCDP Co-channel Dual polarization
  • XPIC Cross-Polarization Interference Cancellation
  • IQ zero-IF architecture In E-band microwave systems, due to large bandwidth requirements, IQ zero-IF architecture is usually used, and XPIC polarization interference cancellation signals are transmitted in the form of baseband IQ signals.
  • the baseband IQ signal has high requirements on the transmission channel. There are two pairs of differential signals for reception and transmission. The I and Q differential signal transmission are required to have similar group delay, insertion loss, return loss, etc. Therefore, the channel requires better S parameters and group delay.
  • Some relevant solutions currently on the market use optical interfaces for transmission.
  • the transmitted baseband IQ signal needs to be differentially encoded and shaped, and then modulated by a laser for transmission on an optical cable. This solution is relatively complex, and the receiving and transmitting polarization interference is offset.
  • the signal requires a dedicated optical module, which is costly to implement and has poor engineering ease of use.
  • a method for generating an interference cancellation signal including: performing IQ spectrum shifting of a predetermined bandwidth on a received baseband IQ signal to obtain an initial interference cancellation signal; and performing the initial interference cancellation on the received baseband IQ signal.
  • the signal undergoes power control processing to obtain the final interference cancellation signal.
  • an interference cancellation signal generating device including: a spectrum shifting module configured to perform IQ spectrum shifting of a predetermined bandwidth on a received baseband IQ signal to obtain initial interference a cancellation signal, the predetermined bandwidth is smaller than the bandwidth of the baseband IQ signal; and a power control processing module configured to perform power control processing on the initial interference cancellation signal to obtain a final interference cancellation signal.
  • a signal processing device comprising an interference cancellation signal generating device, which is the interference cancellation signal generating device described in the first aspect of the present disclosure; a second channel matching unit , the second channel matching unit is configured to receive the final interference cancellation signal sent by the partner device; the main signal processing device is configured to receive the baseband IQ signal and the final interference cancellation signal sent by the partner device, and use the received interference cancellation signal to process the received baseband IQ signal to obtain the main signal to be transmitted; and a main signal sending device configured to send the main signal to be transmitted to the opposite end device .
  • a computer-readable storage medium is provided with a computer program stored thereon.
  • the processor implements the method as described in the first aspect of the present disclosure. The interference cancellation signal generation method described above.
  • Figure 1 is a flow chart of an implementation method of generating an interference cancellation signal provided by the present disclosure
  • Figure 2 is a flow chart of an implementation of step S120 of the interference cancellation signal generation method provided by the present disclosure
  • Figure 3 is an implementation of the interference cancellation signal generation method provided by the present disclosure.
  • Figure 4 is a schematic module diagram of an embodiment of the interference cancellation signal generation device provided by the present disclosure.
  • Figure 5 is a schematic diagram of the signal flow in the interference cancellation signal generation device provided by the present disclosure.
  • Figure 6 is a schematic diagram of an embodiment of the signal processing device provided by the present disclosure.
  • Figure 7 is a schematic diagram of the signal flow of the IQ interference signal entering the baseband processing unit provided by the present disclosure
  • Figure 8 is a schematic diagram of setting up an IQ protection unit provided by the present disclosure.
  • Figure 9 is a schematic diagram of the connection between the first channel matching unit and the second channel matching unit provided by the present disclosure.
  • interference cancellation signal generation method In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the interference cancellation signal generation method, interference cancellation signal generation device, signal processing equipment, and computer-readable storage medium provided by the present disclosure are described in detail below in conjunction with the accompanying drawings. describe.
  • a method for generating an interference cancellation signal is provided, which at least includes but is not limited to step S110 and step S120.
  • step S110 the received baseband IQ signal is subjected to IQ spectrum shifting of a predetermined bandwidth to obtain an initial interference cancellation signal.
  • step S120 power control processing is performed on the initial interference cancellation signal to obtain a final interference cancellation signal.
  • the generation method provided by the present disclosure spectrum shifting is performed on the baseband IQ signal to obtain an initial interference cancellation signal that is free from DC low-frequency noise interference.
  • the initial interference cancellation signal is then subjected to power control processing to obtain a final interference cancellation signal.
  • XPIC interference cancellation can be realized, so that IQ signals can be transmitted to each other in multi-signal cables. Therefore, the generation method provided by the present disclosure is relatively simpler to implement.
  • the final interference cancellation signal generated through the above-mentioned steps S110 and S120 is suitable for mutual transmission in multi-signal cables (for example, Category 6e twisted pair).
  • Optical transceiver modules are no longer needed, simplifying the interconnection structure of the XPIC system and reducing the cost. The overall cost of the XPIC system.
  • the predetermined bandwidth is one-half the bandwidth of the baseband IQ signal.
  • the baseband processing unit of the communication device can realize half-bandwidth migration of the baseband IQ signal. Therefore, in the present disclosure, the predetermined bandwidth can be one-half of the bandwidth of the baseband IQ signal, which can make full use of existing The function of the baseband processing unit does not require the addition of new spectrum shifting devices.
  • the initial interference resistance The signal cancellation and power control processing at least include but are not limited to step S121 to step S123.
  • step S121 the initial interference cancellation signal is coupled to obtain a first intermediate interference cancellation signal.
  • step S122 an IQ fixed gain is performed on the first intermediate interference cancellation signal to obtain a second intermediate interference cancellation signal that meets a predetermined power standard.
  • step S123 low-pass filtering is performed on the second intermediate interference cancellation signal to obtain the final interference cancellation signal.
  • the first intermediate interference cancellation signal generated by the coupling unit can be output from the interface side of the channel matching unit with a predetermined power standard.
  • the out-of-band interference in the IQ signal frequency domain can be eliminated, a purer spectrum can be obtained, and the interference cancellation performance of the final interference cancellation signal can be better improved.
  • the final interference cancellation signal is an H-polarized interference cancellation signal
  • the baseband IQ signal is a V-polarized baseband IQ signal
  • the final interference cancellation signal is V-polarized interference cancellation signal
  • the spectrum from the peer air interface can be received through the radio frequency (RF) receiver of the microwave system, and then down-converted to a baseband IQ signal.
  • RF radio frequency
  • the final interference cancellation signal needs to be sent to the partner device for the partner device to implement the XPIC technology.
  • the generating method may further include step S130.
  • step S130 the final interference cancellation signal is sent to the partner device.
  • the partner device can use the H-polarized signal to perform interference cancellation processing on the V-polarized main signal processed by the partner device; if the final interference cancellation signal is V-polarized signal, then the partner device can use the V-polarized signal to perform interference cancellation processing on the H-polarized main signal processed by the partner device.
  • partner device there is no special limitation on the "partner device” as long as it can process the received baseband IQ signal and obtain the final interference cancellation signal generated by the electronic device executing the current interference cancellation signal generation method.
  • the device that transmits the main signal is called a "partner device”.
  • a “partner device” could be the Pre-interference cancellation signal generation method for electronic equipment located in the same geographical area as communication equipment.
  • an interference cancellation signal generation device is provided. As shown in FIG. 4 , the interference cancellation signal generation device includes a spectrum shifting module 210 and a power control processing module 220 . The interference cancellation signal generation device is used to execute the interference cancellation signal generation method provided in the first aspect of the present disclosure.
  • the spectrum moving module 210 is configured to perform step S110, that is, the spectrum moving module 210 is configured to perform IQ spectrum shifting of a predetermined bandwidth on the received baseband IQ signal, and the predetermined bandwidth is smaller than the baseband IQ signal to obtain an initial interference cancellation signal. bandwidth.
  • the power control processing module 220 is configured to perform step S120, that is, the power control processing module 220 is configured to perform power control processing on the initial interference cancellation signal to obtain a final interference cancellation signal.
  • the interference cancellation signal generating device When the interference cancellation signal generating device generates the interference cancellation signal, the baseband IQ signal is spectrum shifted to obtain an initial interference cancellation signal that is free from DC low-frequency noise interference. The initial interference cancellation signal is then subjected to power control processing to obtain a final interference cancellation signal.
  • XPIC interference cancellation By sending the final interference cancellation signal to the partner device, XPIC interference cancellation can be realized, so that IQ signals can be transmitted to each other in multi-signal cables. Therefore, the generation method provided by the present disclosure is relatively simpler to implement.
  • the predetermined bandwidth is half the bandwidth.
  • the specific structure of the power control processing module 220 is not particularly limited.
  • the power control processing module 220 includes an IQ coupling unit 221, an IQ power control unit 222 and a low Pass filter unit 223.
  • the IQ coupling unit 221 is configured to perform coupling processing on the initial interference cancellation signal to obtain a first intermediate interference cancellation signal.
  • the IQ power control unit 222 is configured to perform an IQ fixed gain on the first intermediate interference cancellation signal to obtain a second intermediate interference cancellation signal that meets a predetermined power standard.
  • the low-pass filtering unit 223 is configured to perform low-pass filtering processing on the second intermediate interference cancellation signal to obtain the final interference cancellation signal.
  • the baseband IQ signal is an H-polarized baseband IQ signal or a V-polarized baseband IQ signal.
  • the interference signal generation device further includes a first channel matching unit 230 configured to send the final interference cancellation signal to a partner device.
  • the first channel matching unit 230 may include an RJ45 connector. Through the RJ45 connector, the interconnection between the H-polarized interference signal cable/V-polarized interference signal cable can be realized.
  • the signal processing device includes an interference signal cancellation signal generating device 310, a main signal processing device 320, a second channel matching unit 330 and a main signal processing device.
  • Signal sending device 340 the signal processing device includes an interference signal cancellation signal generating device 310, a main signal processing device 320, a second channel matching unit 330 and a main signal processing device.
  • the interference cancellation signal generating device 310 is the interference cancellation signal generating device provided in the second aspect of the present disclosure.
  • the main signal processing device 320 is configured to receive the baseband IQ signal and the final interference cancellation signal sent by the partner device, and use the received interference cancellation signal to process the received baseband IQ signal to obtain the main signal to be transmitted.
  • the second channel matching unit 330 is configured to receive the final interference cancellation signal sent by the partner device.
  • the main signal sending device 340 is configured to send the main signal to be transmitted to the peer device.
  • the interference cancellation signal generating device 310 when the interference cancellation signal generating device 310 generates the interference cancellation signal, the baseband IQ signal is spectrum shifted to obtain an initial interference cancellation signal that is free from DC low-frequency noise interference. The initial interference cancellation signal is then subjected to power control processing to obtain a final interference cancellation signal.
  • XPIC interference cancellation can be realized, so that IQ signals can be transmitted to each other in multi-signal cables. Therefore, the implementation of the generation method provided by the present disclosure is relatively simple. Correspondingly, the signal Processing equipment also costs less.
  • the mutual transmission of polarization interference cancellation signals belongs to outdoor line transmission. Therefore, as shown in Figure 8, the polarization interference cancellation signal is transmitted on the port side of the transceiver unit (i.e., the first channel matching unit, and and the second channel matching unit) need to be protected for reliability.
  • electrostatic discharge (ESD, Electro-Static discharge) protection, lightning strike protection, surge protection, etc. can be provided on the port side of the transceiver unit.
  • ESD Electro-Static discharge
  • static electricity is a common damage method. In some embodiments, it can be detected on the port side (i.e., the second channel matching unit, and the first channel matching unit). ) Set up an electrostatic discharge ESD device.
  • the second channel matching unit 330 includes an RJ45 connector.
  • the second channel matching unit is connected to the first channel matching unit of the partner device through a polarized signal transmission cable, and the length of the polarized signal transmission cable does not exceed 1 meter.
  • the polarized signal transmission cable may be a Category 6e twisted pair cable.
  • H-Pol/V-Pol polarized interference signal cable interconnection is realized in the physical form of an RJ45 connector through a customized interface.
  • the custom interface mainly includes two sets of baseband IQ differential signal definitions and a set of shielded ground signals:
  • the transmission channel shielding layer is grounded.
  • Baseband IQ signals are transmitted to each other in the form of multi-signal cables.
  • the transmission channel is also There are higher requirements.
  • the transmission channel needs to support 4 pairs of differential transmission at the same time.
  • the IQ differential pairs have high isolation and good shielding capabilities.
  • Category 6e twisted pair supports multi-signal cable transmission and customized line sequence, ensuring the isolation between IQ polarization cancellation signals.
  • the transmission distance of the customized cable is within 1 meter, which effectively controls the group delay of channel transmission and meets the demodulation capabilities of the baseband processing unit.
  • Multi-signal cables that support 8-core IQ differential signal transmission can also meet the transmission requirements.
  • the signal processing equipment provided by this disclosure can be a microwave E-Band all-outdoor integrated transmission system, or it can be an IQ zero-intermediate frequency architecture system such as microwave high-frequency D-Band, W-Band, etc.
  • the interference cancellation signal generation method After the interference cancellation signal generation method is executed by the interference cancellation signal generation device in the signal processing equipment, it not only reduces the difficulty of generating the interference cancellation signal, but also allows the IQ baseband signal to be transmitted in the twisted pair cable, reducing the overall communication cost. cost.
  • a computer-readable storage medium is provided with a computer program stored thereon.
  • the processor implements the method as described in the first aspect of the present disclosure. The interference cancellation signal generation method described above.
  • Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes volatile and nonvolatile media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. removable, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disk (DVD) or other optical disk storage, magnetic cassettes, tapes, disk storage or other magnetic storage devices, or may Any other medium used to store desired information and that can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .
  • Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted in a general illustrative sense only and not for purpose of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone unless expressly stated otherwise. Or may be used in combination with features, characteristics and/or elements described in connection with other embodiments. Accordingly, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the scope of the present disclosure as set forth in the appended claims.

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Abstract

本公开提供一种干扰抵消信号的生成方法，包括：对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号；以及对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。本公开还提供一种干扰抵消信号生成装置、一种包括该干扰抵消信号生成装置的信号处理设备、以及一种计算机可读存储介质。

Description

干扰抵消信号的生成方法及装置、信号处理设备、存储介质
相关申请的交叉引用
本申请要求于2022年6月30日提交的中国专利申请NO.202210764014.5的优先权，该中国专利申请的内容通过引用的方式整体合并于此。
技术领域
本公开涉及微波通信领域，具体地，涉及干扰抵消信号的生成方法、干扰抵消信号生成装置、信号处理设备、以及计算机可读存储介质。
背景技术
在微波通信系统中，共波道双极化(CCDP，Co-channel Dual polarization)是指在一个信道中采用水平极化波和垂直极化波传输两路信号，CCDP是微波系统中一种空间分集的扩容技术。CCDP利用两路正交的极化波传输信号实现传输容量加倍，需要采用交叉极化干扰抵消(XPIC，Cross-Polarization Interference Cancellation)技术消除两路正交的极化波之间的交叉干扰。
在E波段(E-Band)的微波系统中，因大带宽需求，通常采用IQ零中频架构，XPIC极化干扰抵消信号以基带IQ信号形式传输。基带IQ信号对传输信道要求较高，接收和发送各有两对差分信号，要求I和Q差分信号传输具备相近的群时延、插入损耗、回波损耗等。因此信道要求有较好的S参数和群时延。目前市场上相关的一些方案是采用光接口形式传输，需要先将传输的基带IQ信号进行差分编码成形处理，再由激光器调制到光缆上传输，此方案相对复杂，并且接收和发送极化干扰抵消信号需要专用光模块，实现成本较高，工程易用性差。
公开内容
作为本公开的第一个方面，提供一种干扰抵消信号的生成方法，包括：对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号；以及对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
作为本公开的第二个方面，提供一种干扰抵消信号生成装置，包括：频谱搬移模块，所述频谱搬移模块配置为对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号，所述预定带宽小于所述基带IQ信号的带宽；以及功率控制处理模块，所述功率控制处理模块配置为对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
作为本公开的第三个方面，提供一种信号处理设备：包括干扰抵消信号生成装置，所述抵消信号生成装置为本公开第一个方面所述的干扰抵消信号生成装置；第二信道匹配单元，所述第二信道匹配单元配置为接收伙伴设备发送的最终干扰抵消信号；主信号处理装置，所述主信号处理装置配置为接收基带IQ信号、以及所述伙伴设备发送的最终干扰抵消信号，并利用接收到的干扰抵消信号对接收到的基带IQ信号进行处理，获得待传输主信号；以及主信号发送装置，所述主信号发送装置配置为将所述待传输主信号发送至对端设备。
作为本公开的第四个方面，提供一种计算机可读存储介质，其上存储有计算机程序，当所述计算机程序被处理器执行时，使得所述处理器实现如本公开第一个方面所述的干扰抵消信号的生成方法。
附图说明
图1是本公开所提供的干扰抵消信号的生成方法的一种实施方式的流程图；
图2是本公开所提供的干扰抵消信号的生成方法的步骤S120的一种实施方式的流程图；
图3是本公开所提供的干扰抵消信号的生成方法的一种实施方 式的流程图；
图4是本公开所提供的干扰抵消信号生成装置的一种实施方式的模块示意图；
图5是本公开所提供的干扰抵消信号生成装置中的信号流示意图；
图6是本公开所提供的信号处理设备的一种实施方式的示意图；
图7是本公开所提供的IQ干扰信号进入基带处理单元的信号流示意图；
图8是本公开所提供的设置IQ防护单元的示意图；
图9是本公开所提供的第一信道匹配单元和第二信道匹配单元相连接的示意图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图对本公开提供的干扰抵消信号的生成方法、干扰抵消信号生成装置、信号处理设备、和计算机可读存储介质进行详细描述。
在下文中将参考附图更充分地描述示例实施例，但是所述示例实施例可以以不同形式来体现，且本公开不应当被解释为限于本文阐述的实施例。提供这些实施例的目的在于使本公开更加透彻和完整，并使本领域技术人员充分理解本公开的范围。
在不冲突的情况下，本公开各实施例及实施例中的各特征可相互组合。
如本文所使用的，术语“和/或”包括一个或多个相关列举条目的任何和所有组合。
本文所使用的术语仅用于描述特定实施例，且不限制本公开。如本文所使用的，单数形式“一个”和“该”也包括复数形式，除非上下文另外清楚指出。还将理解的是，当本说明书中使用术语“包括”和/或“由……制成”时，指定存在特定特征、整体、步骤、操作、元件和/或组件，但不排除存在或添加一个或多个其它特征、整体、步骤、操作、元件、组件和/或其群组。
除非另外限定，否则本文所用的所有术语(包括技术术语和科学术语)的含义与本领域普通技术人员通常理解的含义相同。还将理解，诸如在常用字典中限定的那些术语应当被解释为具有与其在相关技术以及本公开的背景下的含义一致的含义，且将不解释为具有理想化或过度形式上的含义，除非本文明确如此限定。
基带IQ信号互传对信道要求较高，为了实现多信号电缆中的IQ信号直传，必须要考虑到信道内低频附近的噪声干扰。作为本公开的第一个方面，如图1所示，提供一种干扰抵消信号的生成方法，至少包括但不限于步骤S110和步骤S120。
在步骤S110中，对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号。
在步骤S120中，对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
本公开所提供的生成方法中，对基带IQ信号进行频谱搬移，即可获得摆脱直流低频噪声干扰的初始干扰抵消信号。再对所述初始干扰抵消信号进行功率控制处理，获得最终干扰抵消信号。将该最终干扰抵消信号发送给伙伴设备，即可实现XPIC干扰抵消，使得IQ信号可以在多信号电缆中互传，因此，本公开所提供的生成方法的方案实现相对更加简单。
通过上述步骤S110和步骤S120生成的最终干扰抵消信号适用于在多信号电缆(例如，超六类双绞线)中互传，不再需要光收发模块，简化了XPIC系统的互联结构，并降低了XPIC系统的整体成本。
在本公开中，对IQ信号频谱搬移的“预定带宽”不做特殊的限定，至少要能够摆脱直流低频噪声干扰即可。在一些实施方式中，所述预定带宽为所述基带IQ信号带宽的二分之一。通信设备的基带处理单元可以实现对基带IQ信号的二分之一带宽搬移，因此，在本公开中，所述预定带宽可以为所述基带IQ信号带宽的二分之一，可以充分利用现有基带处理单元的功能，不需要增加新的频谱搬移器件。
在本公开中，对如何对初始干扰抵消信号进行功率控制处理不做特殊的限定。在一些实施方式中，如图2所示，所述对初始干扰抵 消信号进行功率控制处理至少包括但不限于步骤S121至步骤S123。
在步骤S121中，对所述初始干扰抵消信号进行耦合处理，获得第一中间干扰抵消信号。
在步骤S122中，对所述第一中间干扰抵消信号进行IQ固定增益，以获得符合预定功率标准的第二中间干扰抵消信号。
在步骤S123中，对所述第二中间干扰抵消信号进行低通滤波处理，以获得所述最终干扰抵消信号。
通过步骤S121和步骤S122，可以使得耦合单元产生的第一中间干扰抵消信号以预定的功率标准从信道匹配单元的接口侧输出。经过步骤S123，可以消除IQ信号频域的带外干扰，获得更纯净的频谱，更好地提升最终干扰抵消信号的干扰抵消性能。
当所述基带IQ信号为H极化的基带IQ信号时，最终干扰抵消信号为H极化的干扰抵消信号；当所述基带IQ信号为V极化的基带IQ信号时，最终干扰抵消信号为V极化的干扰抵消信号。
在本公开中，对如何获得所述基带IQ信号不做特殊的限定。例如，可以通过微波系统的射频(RF)接收器接收来自对端空口的频谱，然后再进行下变频至基带IQ信号。
在本公开中，最终干扰抵消信号需要被发送至伙伴设备，以供所述伙伴设备实现XPIC技术。相应地，如图3所示，所述生成方法还可以包括步骤S130。
在步骤S130中，将所述最终干扰抵消信号发送至伙伴设备。
需要指出的是，如果最终干扰抵消信号为H极化信号，那么伙伴设备可以利用该H极化信号对伙伴设备处理的V极化主信号进行干扰抵消处理；如果最终干扰抵消信号为V极化信号，那么伙伴设备可以利用该V极化信号对伙伴设备处理的H极化主信号进行干扰抵消处理。
在本公开中，对“伙伴设备”并不做特殊的限定，只要是能够利用执行当前干扰抵消信号生成方法的电子设备所产生的最终干扰抵消信号对接收到的基带IQ信号进行处理并获得待传输主信号的设备，即可被称为“伙伴设备”。例如，“伙伴设备”可以是与执行当 前干扰抵消信号生成方法的电子设备处于同一地理区域的通信设备。
作为本公开的第二个方面，提供一种干扰抵消信号生成装置，如图4所示，该干扰抵消信号生成装置包括频谱搬移模块210和功率控制处理模块220。所述干扰抵消信号生成装置用于执行本公开第一个方面所提供的干扰抵消信号生成方法。
频谱搬移模块210配置为执行步骤S110，即，频谱搬移模块210配置为对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号，所述预定带宽小于所述基带IQ信号的带宽。
功率控制处理模块220配置为执行步骤S120，即，功率控制处理模块220配置为对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
所述干扰抵消信号生成装置生成干扰抵消信号时，对基带IQ信号进行频谱搬移，即可获得摆脱直流低频噪声干扰的初始干扰抵消信号。再对所述初始干扰抵消信号进行功率控制处理，获得最终干扰抵消信号。将该最终干扰抵消信号发送给伙伴设备，即可实现XPIC干扰抵消，使得IQ信号可以在多信号电缆中互传，因此，本公开所提供的生成方法的方案实现相对更加简单。
在一些实施方式中，所述预定带宽为二分之一带宽。
在本公开中，对功率控制处理模块220的具体结构不做特殊的限定，在一些实施方式中，如图5所示，功率控制处理模块220包括IQ耦合单元221、IQ功率控制单元222和低通滤波单元223。
IQ耦合单元221，该IQ耦合单元221配置为对所述初始干扰抵消信号进行耦合处理，获得第一中间干扰抵消信号。
IQ功率控制单元222，该IQ功率控制单元222配置为对所述第一中间干扰抵消信号进行IQ固定增益，以获得符合预定功率标准的第二中间干扰抵消信号。
低通滤波单元223，该低通滤波单元223配置为对所述第二中间干扰抵消信号进行低通滤波处理，以获得所述最终干扰抵消信号。
如上文中所述，所述基带IQ信号为H极化的基带IQ信号或者V极化的基带IQ信号。
在一些实施方式中，所述干扰信号生成装置还包括第一信道匹配单元230，该第一信道匹配单元230配置为将所述最终干扰抵消信号发送至伙伴设备。
在一些实施方式中，第一信道匹配单元230可以包括RJ45连接器。通过RJ45连接器，可以实现H极化干扰信号电缆/V极化干扰信号电缆之间的互联。
作为本公开的第三个方面，提供一种信号处理设备，如图6所示，所述信号处理设备包括干扰信号抵消信号生成装置310、主信号处理装置320、第二信道匹配单元330和主信号发送装置340。
干扰抵消信号生成装置310为本公开第二个方面所提供的干扰抵消信号生成装置。主信号处理装置320配置为接收基带IQ信号、以及伙伴设备发送的最终干扰抵消信号，并利用接收到的干扰抵消信号对接收到的基带IQ信号进行处理，获得待传输主信号。
第二信道匹配单元330配置为接收伙伴设备发送的最终干扰抵消信号。
主信号发送装置340配置为将所述待传输主信号发送至对端设备。
如上文中所述，干扰抵消信号生成装置310生成干扰抵消信号时，对基带IQ信号进行频谱搬移，即可获得摆脱直流低频噪声干扰的初始干扰抵消信号。再对所述初始干扰抵消信号进行功率控制处理，获得最终干扰抵消信号。将该最终干扰抵消信号发送给伙伴设备，即可实现XPIC干扰抵消，使得IQ信号可以在多信号电缆中互传，因此，本公开所提供的生成方法的方案实现相对更加简单，相应地，信号处理设备的成本也更低。
如图7所示，IQ干扰信号进入基带处理单元，需要经过多级先进先出存储器(FIFO)对接收到的干扰信号进行相干匹配、均衡对齐等。IQ接收信号频谱质量越好，FIFO使用深度越小，越容易完成干扰抵消解调。
极化干扰抵消信号的互传属于室外线传输，因此，如图8所示，极化干扰抵消信号在收发单元的端口侧(即，第一信道匹配单元、以 及第二信道匹配单元)需要进行可靠性防护。例如，可以对收发单元的端口侧做静电释放(ESD，Electro-Static discharge)防护、雷击防护、浪涌防护等。通常极化信号传输线缆的长度不超过1米，因此，静电是一种常见的损害方式，在一些实施方式中，可以在端口侧(即，第二信道匹配单元、以及第一信道匹配单元)设置静电释放ESD装置。
在一些实施方式中，第二信道匹配单元330包括RJ45连接器。
在一些实施方式中，所述第二信道匹配单元通过极化信号传输线缆与伙伴设备的第一信道匹配单元相连，所述极化信号传输线缆的长度不超过1米。
在本公开中，如图9所示，极化信号传输线缆可以是超六类双绞线。
本公开中，通过自定义接口，以RJ45连接器的物理形式，实现H-Pol/V-Pol极化干扰信号电缆互联。自定义接口主要包括两组基带IQ差分信号定义和一组屏蔽地信号：
a、H-Polarization IQ差分，BBI±(Pin5/6)、BBQ±(Pin7/8)；
b、V-Polarization IQ差分，BBI±(Pin1/2)、BBQ±(Pin3/4)；
c、传输信道屏蔽层接地信号。
基带IQ信号以多信号电缆的形式互传，除了在基带IQ信号收发单元(即，干扰抵消信号生成装置、以及对端设备的主信号处理装置)进行频谱搬移、滤波等处理，还对传输信道有较高的要求。传输信道需同时支持4对差分传输，IQ差分对间具备较高的隔离度，有较好的屏蔽能力。超六类双绞线支持多信号电缆传输，自定义线序，使得IQ极化抵消信号之间的隔离度得到保证。根据基带(Modem)解调能力以及产品使用场景，定制电缆传输距离在1米以内，有效控制信道传输的群延迟，满足基带处理单元的解调能力。
在本公开中，在传输信号时，不局限于RJ45连接器或超六类双绞线，支持8芯IQ差分信号传输的多信号电缆也能满足传输要求。
本公开所提供的信号处理设备可以是微波E-Band全室外一体化传输系统，也可是微波高频段D-Band、W-Band等IQ零中频架构系统。
通过所述信号处理设备中的干扰抵消信号生成装置执行所述干扰抵消信号生成方法后，既降低了生成干扰抵消信号的难度，又可以使得IQ基带信号在双绞电缆中传输，降低了整体通信成本。
作为本公开的第四个方面，提供一种计算机可读存储介质，其上存储有计算机程序，当所述计算机程序被处理器执行时，使得所述处理器实现如本公开第一个方面所述的干扰抵消信号的生成方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器(如中央处理器、数字信号处理器或微处理器)执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其它存储器技术、CD-ROM、数字多功能盘(DVD)或其它光盘存储、磁盒、磁带、磁盘存储或其它磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
本文已经公开了示例实施例，并且虽然采用了具体术语，但它们仅用于并仅应当被解释为一般说明性含义，并且不用于限制的目的。在一些实例中，对本领域技术人员显而易见的是，除非另外明确指出，否则与特定实施例相结合描述的特征、特性和/或元素可单独使用， 或可与结合其它实施例描述的特征、特性和/或元件组合使用。因此，本领域技术人员将理解，在不脱离由所附的权利要求阐明的本公开的范围的情况下，可进行各种形式和细节上的改变。

Claims (17)

  1. 一种干扰抵消信号的生成方法，包括：
    对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号；以及
    对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
  2. 根据权利要求1所述的生成方法，其中，所述预定带宽为所述基带IQ信号带宽的二分之一。
  3. 根据权利要求1所述的生成方法，其中，所述对初始干扰抵消信号进行功率控制处理包括：
    对所述初始干扰抵消信号进行耦合处理，获得第一中间干扰抵消信号；
    对所述第一中间干扰抵消信号进行IQ固定增益，以获得符合预定功率标准的第二中间干扰抵消信号；以及
    对所述第二中间干扰抵消信号进行低通滤波处理，以获得所述最终干扰抵消信号。
  4. 根据权利要求1至3中任意一项所述的生成方法，其中，所述基带IQ信号为H极化的基带IQ信号或者V极化的基带IQ信号。
  5. 根据权利要求1至3中任意一项所述的生成方法，还包括：
    将所述最终干扰抵消信号发送至伙伴设备。
  6. 一种干扰抵消信号生成装置，包括：
    频谱搬移模块，所述频谱搬移模块配置为对接收到的基带IQ信号进行预定带宽的IQ频谱搬移，以获得初始干扰抵消信号，其中，所述预定带宽小于所述基带IQ信号的带宽；
    功率控制处理模块，所述功率控制处理模块配置为对所述初始干扰抵消信号进行功率控制处理，以获得最终干扰抵消信号。
  7. 根据权利要求6所述的干扰抵消信号生成装置，其中，所述预定带宽为所述基带IQ信号带宽的二分之一。
  8. 根据权利要求6所述的干扰抵消信号生成装置，其中，所述功率控制处理模块包括：
    IQ耦合单元，所述IQ耦合单元配置为对所述初始干扰抵消信号进行耦合处理，获得第一中间干扰抵消信号；
    IQ功率控制单元，所述IQ功率控制单元配置为对所述第一中间干扰抵消信号进行IQ固定增益，以获得符合预定功率标准的第二中间干扰抵消信号；以及
    低通滤波单元，所述低通滤波单元配置为对所述第二中间干扰抵消信号进行低通滤波处理，以获得所述最终干扰抵消信号。
  9. 根据权利要求6至8中任意一项所述的干扰抵消信号生成装置，其中，所述基带IQ信号为H极化的基带IQ信号或者V极化的基带IQ信号。
  10. 根据权利要求6至8中任意一项所述的干扰抵消信号生成装置，还包括第一信道匹配单元，所述第一信道匹配单元配置为将所述最终干扰抵消信号发送至伙伴设备。
  11. 根据权利要求10所述的干扰抵消信号生成装置，其中，所述第一信道匹配单元包括RJ45连接器。
  12. 一种信号处理设备，包括：
    干扰抵消信号生成装置，所述抵消信号生成装置为权利要求6至11中任意一项所述的干扰抵消信号生成装置；
    第二信道匹配单元，所述第二信道匹配单元配置为接收伙伴设备发送的最终干扰抵消信号；
    主信号处理装置，所述主信号处理装置配置为接收基带IQ信号、以及所述伙伴设备发送的最终干扰抵消信号，并利用接收到的干扰抵消信号对接收到的基带IQ信号进行处理，获得待传输主信号；以及
    主信号发送装置，所述主信号发送装置配置为将所述待传输主信号发送至对端设备。
  13. 根据权利要求12所述的信号处理设备，其中，所述信号处理设备还包括静电释放(ESD)装置，所述静电释放单元配置为对所述第二信道匹配单元进行ESD防护。
  14. 根据权利要求12所述的信号处理设备，其中，所述第二信道匹配单元包括RJ45连接器。
  15. 根据权利要求12至14中任意一项所述的信号处理设备，其中，所述第二信道匹配单元通过极化信号传输线缆与所述伙伴设备的第一信道匹配单元相连。
  16. 根据权利要求15所述的信号处理设备，其中，所述极化信号传输线缆为超六类双绞线，所述极化信号传输线缆的长度不超过1米。
  17. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行，使得所述处理器实现如权利要求1至5中任一项所述的干扰抵消信号的生成方法。
PCT/CN2023/102349 2022-06-30 2023-06-26 干扰抵消信号的生成方法及装置、信号处理设备、存储介质 Ceased WO2024001997A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN101098396A (zh) * 2006-06-29 2008-01-02 上海高清数字科技产业有限公司 用于消除信号中干扰的方法和设备
US20110065409A1 (en) * 2009-09-17 2011-03-17 Peter Kenington Frequency shifting based interference cancellation device and method
CN111525977A (zh) * 2020-04-29 2020-08-11 成都立鑫新技术科技有限公司 一种信号监测干扰方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101098396A (zh) * 2006-06-29 2008-01-02 上海高清数字科技产业有限公司 用于消除信号中干扰的方法和设备
US20110065409A1 (en) * 2009-09-17 2011-03-17 Peter Kenington Frequency shifting based interference cancellation device and method
CN111525977A (zh) * 2020-04-29 2020-08-11 成都立鑫新技术科技有限公司 一种信号监测干扰方法

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