CN1685632A - 具有数字信道选择器的中继器 - Google Patents

具有数字信道选择器的中继器 Download PDF

Info

Publication number
CN1685632A
CN1685632A CNA038140632A CN03814063A CN1685632A CN 1685632 A CN1685632 A CN 1685632A CN A038140632 A CNA038140632 A CN A038140632A CN 03814063 A CN03814063 A CN 03814063A CN 1685632 A CN1685632 A CN 1685632A
Authority
CN
China
Prior art keywords
frequency
signal
digital
filter
communication channel
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
Application number
CNA038140632A
Other languages
English (en)
Inventor
亚伯拉罕·哈萨希
亚历克斯·巴伯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dekolink Wireless Ltd
Original Assignee
Dekolink Wireless Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29733786&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1685632(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dekolink Wireless Ltd filed Critical Dekolink Wireless Ltd
Publication of CN1685632A publication Critical patent/CN1685632A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • 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
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • 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
    • H04B1/0003—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
    • H04B1/0007—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 radiofrequency or intermediate frequency stage
    • H04B1/001—Channel filtering, i.e. selecting a frequency channel within the SDR system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources

Abstract

为了在特定频率上中继通信信道，一个接收机(100)接收包括该通信信道的特定频率的信号。一个模数转换器(130)产生与该接收信号相对应的数字信号并且该数字信号通过一个数字滤波器(140)，该数字滤波器配置为过滤该数字信号并且通过在该通信信道的特定频率的频率上或附近频率的频率分量。一个数模转换器(150)产生与该过滤的数字信号相对应的模拟信号并且一个发射机发射该模拟信号。

Description

具有数字信道选择器的中继器
发明领域
本发明通常涉及通信领域。更特别地，本发明涉及一种用于通信或者传输系统(例如，双向蜂窝通信系统)的中继器。
背景技术
信号沿传输媒介(例如，同轴电缆、未屏蔽的导线、波导、户外或者甚至光导纤维)传播时信噪比(SNR)发生衰减。信噪比衰减是限制传输媒介的带宽的一个因素。为了提高远距离传输的信号的信噪比，并且因此增加传输距离以及/或者数据传输速率，可以沿着传输途径每隔一段距离设置信号中继器。中继器已众所周知并且可以用于光学、微波以及射频(RF)通信系统。中继器已用作蜂窝通信系统的一部分以扩展蜂窝基站与蜂窝手机之间的覆盖范围。
但是，用于频谱的共享频率范围之中(例如800MHz到830MHz)的一或多个频率上的一或多个信道的中继器可能产生干扰。现参见图1A，其为举例说明在800到830MHz的频率范围内第一蜂窝通信运营商可能会使用的信道频率的频谱示意图。现参见图1B，其为举例说明在800到830MHz的频率范围内与第一蜂窝通信运营商在同样的地理位置的第二蜂窝通信运营商可能会使用的信道频率的频谱示意图。如图1A和1B所示，每个运营商的信道频率绝然不相同。但是，一个运营商的两个或多个信道频率可以在另一运营商的两个或多个信道频率之间，或者可以在另一运营商的一个或多个信道频率的两侧。
一个运营商为了在上述和在图1A和1B中所举例说明的情况中使用中继器，该运营商需要对每个信道单独响应，或者可以使用较宽频带的中继器以覆盖该运营商的几个信道所驻留的频率范围。但是，如果使用较宽频带的中继器，该中继器将可能无意中转发了属于两个运营商的一个或多个信道。转发其他运营商的通信信道涉及运营商希望避免的法律和商业问题。
现有技术中存在模拟信道化中继器。现有技术的信道化中继器使用模拟滤波器排除或者过滤所有信号或者不属于其信道需要转发的运营商的通信信道。例如，如果中继器的工作带宽为800到830MHz，并且使用中继器的运营商拥有在805MHz、807MHz以及809MHz的通信信道，则该中继器可以配置仅允许或通过在该运营商的信道频率上的信号的模拟滤波器。模拟信道化中继器因此仅转发在该运营商的通信信道的频率上的信号。
现有技术的模拟信道化中继器存在许多缺陷，本发明目的就是解决这些缺陷。
发明内容
作为本发明的一部分，一个接收机接收在特定频率上的与特定通信信道相关的信号。一个模数转换器产生与所接收的信号相对应的数字信号，该数字信号通过一个配置为过滤数字信号并通过在通信信道的特定频率上或者其附近频率的频率分量的数字滤波器。一个数模转换器产生与该过滤的数字信号相对应的模拟信号，一个发射机发射该模拟信号。
根据本发明的一些实施例，可以包括第二数字滤波器，其配置为通过在与第二通信信道相对应的第二频率上或者附近频率的频率分量。
根据本发明的一些实施例，可以包括下变频转换器，以将收到的信号下变频为中频信号。还可以包括上变频转换器，以将与过滤的数字信号相对应的模拟信号上变频到发射频率。
附图简述
本发明的主旨在说明书的结束部分特别地指出并清楚地声明。但是，关于本发明的构成和工作方法，及其目的、特性和优点可以结合附图通过参考以下详细的描述得到最佳的理解。
图1A为举例说明在特定的地理区域内可以由第一蜂窝运营商用于四个通信信道的四个频率的频谱示意图；
图1B为举例说明在特定的地理区域内可以由第二蜂窝运营商用于三个通信信道的三个频率的频谱示意图；
图2为显示根据本发明的一些实施例的具有数字信道选择器(digital channelizer)的双向中继器的一个例子的模块图；
图3为显示在图3中的滤波器组的详图的结构图；
图4A到4D为显示在图3中数字滤波器140A到140D的频率响应的例子的频谱示意图；以及
图5为显示根据本发明的一些实施例的具有数字信道选择器的双向中继器的另一例子的模块图。
应当理解，为了说明的简单清楚起见，在图中显示的元件没有必要按比例画出。例如，一些元件的尺寸可能为了清楚相对于其他元件被夸大。此外，在认为恰当的地方，参考数字在图中进行重复以表示相应或相似的元件。
最佳实施例的说明
在以下的详细描述中，为了透彻地理解本发明，给出了许多的具体细节。但是，本领域技术人员可以理解，本发明可以在没有这些细节的情况下实施。在其他情况下，没有详细描述公知的方法、过程、元件和电路以便突出本发明。
除非特别说明，否则，从下面的说明显而易见，在整个说明书中，使用例如“处理”、“运算”、“计算”、“确定”等的术语的讨论是指计算机、运算系统或类似电子计算装置的操作和/或处理，其把在运算系统的寄存器和/或存储器中的、表示诸如电子的物理量的数据，操作和/或转变为在运算系统的存储器、寄存器或者其他这样的信息存储、传输或显示装置中的、类似的表示物理量的其他数据。
本发明的实施例可以包括用于实施在此的操作的装置。该装置可以为预定的目的特别构造，或者其可以包含由存储在计算机中的程序选择地驱动或重新配置的通用计算机。这样的计算机程序可以存储在计算机可读的存储介质中，例如，但不限于，任何类型的盘片包括软盘、光盘、CD-ROM、磁光盘、只读存储器(ROM)、随机存取存储器(RAM)、电可编程只读存储器(EPROM)、电可擦除可编程只读存储器(EEPROM)、磁学或光学卡、或者任何其他类型的适合存储电子指令并且能够耦合到计算机系统总线的媒介。
在此出现的处理和显示本身不与任何特定的计算机或装置相关。根据在此的教导，可以使用带有程序的各种通用系统，或者其可以提供方便以构造更特别的装置用来实施期望的方法。用于各种这些系统的期望结构将出现在下面的描述中。此外，本发明的实施例不参考任何特定的程序语言描述。应当理解，在此所描述的各种程序语言可以用来实现本发明的教导。
作为本发明的一部分，一个接收机接收在特定频率上的与特定通信信道相关的信号。一个模数字转换器产生与所接收的信号相对应的数字信号，该数字信号通过一个配置为过滤数字信号和使在通信信道的特定频率上或者其附近频率的频率分量通过的数字滤波器。一个数模转换器产生与该过滤的数字信号相对应的模拟信号，一个发射机发射该模拟信号。
根据本发明的一些实施例，可以包括第二数字滤波器，其配置为使在与第二通信信道相对应的第二频率上或者其附近频率的频率分量通过。
根据本发明的一些实施例，可以包括下变频转换器，以将收到的信号下变频为中频信号。还可以包括上变频转换器，以将与过滤的数字信号相对应的模拟信号上变频到发射频率。
现参见图2，其显示根据本发明的具有数字信道选择器的双向中继器100的模块方框图。该双向中继器100可以包括两个基本部分：(A)上游或者上行链路部分，其接收来自移动装置(例如蜂窝电话)的信号并转发该信号到基站；以及(B)下游或者下行链路部分，其接收来自基站的信号并转发该信号到移动装置。
首先从图2的左到右看上行链路部分(A)，有一个输入滤波器110U，例如其可以是一个射频(RF)滤波器，或者更特别地，例如可以是调整为通过在800到830MHz范围内的频率的滤波器。该输入RF滤波器110U接收来自天线的信号并通过在一个或多个将要中继到下变频转换器120U的通信信道的频率范围中的频率。该下变频转换器120U使收到的信号与给定频率的正弦或余弦波混合，从而该收到的信号下变频到中频(IF)。输入RF滤波器110U或下变频转换器120U可以包括信号放大器(图2中未示出)。模数(A/D)转换器130U对该IF信号进行采样，并产生表示该采样的IF信号的数字信号。表示该IF信号的该数字信号进入数字滤波器组140U。图3显示包括数字滤波器140a到140d的数字滤波器组140U的详图。
现参见图3，其显示包括数字滤波器140a到140d的数字滤波器组的结构图。进入数字滤波器组140U的数字信号施加到每个数字滤波器140a到140d上，每个数字滤波器的输出通过加法器142或者功能相等的装置合并。在滤波器组140U中的每个滤波器有单独和不同的频率响应。在通信领域中数字滤波器是公知的。数字滤波器组可以在单个或多个处理器(例如DSP)上或者在单个或多个专用数字滤波器电路上实现。在图3的例子中，显示了四个离散的数字滤波器电路。作为本发明的一些实施例，数字滤波器140a到140d可以是场可编程数字滤波器(FPDF)。即，每个滤波器的传递函数及其频率响应可以重新编程或调整。
现参见图4A到4B，其显示了图3的数字滤波器140a到140d的可能的频率响应的例子，其中，数字滤波器140a到140b分别对应在图1A中举例说明的第一到第四通信信道。即，对于每个数字滤波器140a到140d的脉冲响应或者频率传递特性可以单独设定或者调整，以通过在滤波器的对应通信信道的载波频率上或者其附近频率的数字信号的频率分量。例如，数字滤波器140a可以编程为具有通带频率响应、峰值在如图1A中所示的第一通信信道的载波频率上或者其附近频率的传递函数；数字滤波器140b可以编程为具有通带频率响应、峰值在如图1A中所示的第二通信信道的载波频率上或其附近频率的传递函数，等等。
数字滤波器和数字滤波器传递函数的设计是公知的。虽然上面提到了特定的滤波器和传递函数，但是，目前已知的或将来发明的任何数字滤波器以及传递函数组合都可以作为本发明的部分。
现再参见图2，其显示直接在数字滤波器组140U之后的数模转换器(D/A)150U。该D/A 150U可将数字滤波器组140U的过滤的数字信号输出转变为模拟信号，该模拟信号然后由上变频转换器160U上变频为在输入RF滤波器110U上接收的原始频率。输出滤波器170U可以用来除去任何由上变频转换器160U引入到信号的谐波。上变频转换器160U或者输出RF滤波器170U可以包括信号放大器(在图2中未示出)。该过滤的信号然后可以传递到发射天线并发射。
双向中继器100的下游或下行链路(B)部分可以几乎镜像上述的上行链路部分(A)。区别在于输入RF滤波器110D、数字滤波器组140D滤波器以及输出RF滤波器170D与在上行通信信道上或者其附近通过频率相反，可以调整到接收并通过下行通信信道的频率。
每个滤波器设定的特定频率带宽依赖于通信信道、上行以及下行的特定频率，运营商可能希望在特定的地理位置中继。在图1A以及1B中所示的频率仅为这样的通信信道频率的例子。图1A以及1B中所示的上行以及下行信道之间没有区别。但是，本领域普通技术人员应当理解，在蜂窝系统中，每个下行通信信道可以有相应的上行通信信道。在上行信道频率与下行信道频率之间的关系可以是固定的，或者每个可以在移动装置和基站之间单独协商。
现参见图5，其显示根据本发明的双向中继器100的另一可能实施例。如图2的双向中继器，有两个部分；(A)一个上游或上行链路部分，以及(B)一个下游或下行链路部分。同样，如图2的实施例，上行链路和下行链路部分大体上可以相互镜像，除了它们调整以通过并转发的频率外。
参见图5的双向中继器100的下游或者下行链路部分(B)，有一个包括输入RF滤波器110D的双工器。该输入RF滤波器110D通向包括一个低噪声放大器(LNA)以及一个衰减器的前置滤波级115D。该前置滤波模块115D的输出进入射频单元125D，其可以下变频该输出并且还可以包括一个A/D转换器。在数字过滤模块140D中的数字滤波器可以与图2、3或者4A到4D描述的数字滤波器相类似，或者是适合本发明的其他任何数字滤波器。数字滤波模块140D的输出进入射频单元125D，其可以上变频该输出并且还可以包括一个D/A转换器。功率放大器块145D可以包括一个衰减器、一个高功率放大器以及一个功率监视器。自动增益控制电路(AGC)调整该衰减器，使得来自功率放大器块145D的输出信号大体上保持稳定。功率放大器模块145D的输出信号可以传递到并通过一个包括输出过滤器170D的双工器。
对于图2中的双向中继器100，图5的双向放大器100可以配置为在上行方向中继在特定载波频率上或者其附近频率的特定组的通信信道，并且在下行方向中继在特定载波频率上或者其附近频率的特定组的通信信道。在数字滤波器组或块中的数字滤波器140U和140D可以调整以仅通过在相应的通信信道的载波频率上或其附近频率的频率。可以考虑和补偿在数字滤波器中的上变频或下变频导致的载波频率的偏置。此外，本发明的双向中继器100可以调整以过滤在通信信道频率带宽中的窄频带噪声干扰。
虽然本发明的特定性质在此已经举例并描述，但是本领域人员也可以想到许多修正、替代或等价物。因此，可以理解所附权利要求书将包含所有包括在本发明的真正精神之内的这样的修正或者改变。

Claims (11)

1、一种在特定频率上中继通信信道的方法，所述方法包括：
接收包括该通信信道的特定频率的信号；
产生对应于接收信号的数字信号；
用数字滤波器过滤该数字信号，该数字滤波器配置为使在该通信信道的特定频率的频率上或其附近频率的频率分量通过；
产生与该过滤的数字信号相对应的模拟信号；以及
发射与该过滤的数字信号相对应的该模拟信号。
2、根据权利要求1的所述的方法，进一步包括在产生数字信号之前下变频所述接收信号到中频。
3、根据权利要求2的所述的方法，进一步包括在发射所述模拟信号之前上变频与所述过滤的数字信号相对应的所述模拟信号。
4、根据权利要求1的所述的方法，进一步包括用数字滤波器过滤所述数字信号，该数字滤波器配置为使在与第二通信信道相关的第二频率上或其附近频率的频率分量通过。
5、根据权利要求4的所述的方法，进一步包括合并从每一个所述滤波步骤输出的所述数字信号，并产生与该合并的数字信号相对应的模拟信号。
6、根据权利要求5的所述的方法，进一步包括发射与所述合并的数字信号相对应的所述模拟信号。
7、一种用于在特定频率上中继通信信道的系统，所述系统包括：
一个接收机，用于接收包括该通信信道的特定频率的信号；
一个模数字转换器，用于产生与该接收信号相对应的数字信号；
一个数字滤波器，配置为过滤该数字信号并使在该通信信道的特定频率的频率上或其附近频率的频率分量通过；
一个数模转换器，用于产生与该过滤的数字信号相对应的模拟信号；以及
一个发射机，用于发射与该过滤的数字信号相对应的该模拟信号。
8、根据权利要求7所述的系统，进一步包括一个下变频转换器，用于将所述接收信号转换到中频。
9、根据权利要求8所述的系统，进一步包括一个上变频转换器，用于将与所述过滤的数字信号相对应的所述模拟信号转换到发射频率。
10、根据权利要求7所述的系统，进一步包括一个第二数字滤波器，配置为使在与第二通信信道相关的第二频率上或其附近频率的频率分量通过。
11、根据权利要求10所述的系统，进一步包括一个加法单元，用于合并来自所述第一和第二数字滤波器的输出。
CNA038140632A 2002-06-20 2003-06-22 具有数字信道选择器的中继器 Pending CN1685632A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/175,146 2002-06-20
US10/175,146 US6873823B2 (en) 2002-06-20 2002-06-20 Repeater with digital channelizer

Publications (1)

Publication Number Publication Date
CN1685632A true CN1685632A (zh) 2005-10-19

Family

ID=29733786

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA038140632A Pending CN1685632A (zh) 2002-06-20 2003-06-22 具有数字信道选择器的中继器

Country Status (11)

Country Link
US (1) US6873823B2 (zh)
EP (1) EP1522155B1 (zh)
KR (1) KR100992663B1 (zh)
CN (1) CN1685632A (zh)
AU (1) AU2003238647A1 (zh)
CA (1) CA2490529C (zh)
DE (1) DE20321814U1 (zh)
EA (1) EA006619B1 (zh)
ES (1) ES2390268T3 (zh)
IL (1) IL165824A0 (zh)
WO (1) WO2004002015A2 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638426A (zh) * 2012-03-19 2012-08-15 航天科工深圳（集团）有限公司 一种基于频率的通信互连系统及其实现方法
CN109391274A (zh) * 2018-09-25 2019-02-26 中国联合网络通信集团有限公司 一种数据处理方法及设备

Families Citing this family (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030185163A1 (en) * 2002-03-27 2003-10-02 Bertonis James G. System and method for wireless cable data transmission
CN1192650C (zh) * 2002-04-26 2005-03-09 华为技术有限公司 一种直放站及其实现移动台定位的方法
CN1266976C (zh) * 2002-10-15 2006-07-26 华为技术有限公司 一种移动台定位方法及其直放站
US7623826B2 (en) * 2004-07-22 2009-11-24 Frank Pergal Wireless repeater with arbitrary programmable selectivity
JP4943421B2 (ja) 2005-04-25 2012-05-30 エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート 同一チャネル中継器及びその方法
KR100713771B1 (ko) 2005-08-16 2007-05-02 주식회사 서화정보통신 휴대 인터넷 시스템의 무선 알에프 중계 장치
KR100855225B1 (ko) 2005-09-28 2008-08-29 삼성전자주식회사 다중홉 릴레이 방식을 사용하는 광대역 무선접속통신시스템에서 프레임 통신 장치 및 방법
US20070248358A1 (en) * 2006-04-19 2007-10-25 Michael Sauer Electrical-optical cable for wireless systems
US20070286599A1 (en) * 2006-06-12 2007-12-13 Michael Sauer Centralized optical-fiber-based wireless picocellular systems and methods
US20070292136A1 (en) * 2006-06-16 2007-12-20 Michael Sauer Transponder for a radio-over-fiber optical fiber cable
US7627250B2 (en) * 2006-08-16 2009-12-01 Corning Cable Systems Llc Radio-over-fiber transponder with a dual-band patch antenna system
US7787823B2 (en) * 2006-09-15 2010-08-31 Corning Cable Systems Llc Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same
US7848654B2 (en) * 2006-09-28 2010-12-07 Corning Cable Systems Llc Radio-over-fiber (RoF) wireless picocellular system with combined picocells
GB2443231B (en) * 2006-10-04 2011-02-02 Vodafone Plc Configuration of base station repeater
KR100841145B1 (ko) 2006-10-19 2008-06-24 엘지노텔 주식회사 상향 분리 수신하는 디지털 중계기에서의 상향 전송 속도제어 방법 및 호 접속 제어 방법
US8873585B2 (en) 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US8111998B2 (en) * 2007-02-06 2012-02-07 Corning Cable Systems Llc Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems
KR100999770B1 (ko) * 2007-02-20 2010-12-08 세이코 엡슨 가부시키가이샤 송전 제어 장치, 송전 장치, 전자 기기 및 무접점 전력전송 시스템
US20100054746A1 (en) 2007-07-24 2010-03-04 Eric Raymond Logan Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems
US20090046624A1 (en) * 2007-08-14 2009-02-19 Canam Technology Incorporated System and method for inserting break-in signals in communication systems
CN101843011A (zh) * 2007-10-11 2010-09-22 奈克斯蒂维蒂有限公司 用于cdma unii链路的中继器
US8175459B2 (en) 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
WO2009081376A2 (en) 2007-12-20 2009-07-02 Mobileaccess Networks Ltd. Extending outdoor location based services and applications into enclosed areas
US8116254B2 (en) * 2008-01-31 2012-02-14 Powerwave Technologies, Inc. Wireless repeater with smart uplink
FR2937812B1 (fr) * 2008-10-28 2010-10-22 Thales Sa Transpondeur et procede de reproduction de signal associe
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
CN102396171B (zh) 2009-02-03 2015-09-30 康宁光缆系统有限责任公司 基于光纤的分布式天线系统、组件和用于监视和配置基于光纤的分布式天线系统、组件的相关方法
WO2010091004A1 (en) 2009-02-03 2010-08-12 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US8660165B2 (en) * 2009-06-11 2014-02-25 Andrew Llc System and method for detecting spread spectrum signals in a wireless environment
US8223821B2 (en) * 2009-06-25 2012-07-17 Andrew Llc Uplink signal detection in RF repeaters
US8326156B2 (en) 2009-07-07 2012-12-04 Fiber-Span, Inc. Cell phone/internet communication system for RF isolated areas
KR101067392B1 (ko) * 2009-07-31 2011-09-27 알트론 주식회사 구조 요청 신호 처리 장치 및 방법
US8548330B2 (en) 2009-07-31 2013-10-01 Corning Cable Systems Llc Sectorization in distributed antenna systems, and related components and methods
US8280259B2 (en) 2009-11-13 2012-10-02 Corning Cable Systems Llc Radio-over-fiber (RoF) system for protocol-independent wired and/or wireless communication
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US20110268446A1 (en) 2010-05-02 2011-11-03 Cune William P Providing digital data services in optical fiber-based distributed radio frequency (rf) communications systems, and related components and methods
US9525488B2 (en) 2010-05-02 2016-12-20 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
WO2012024247A1 (en) 2010-08-16 2012-02-23 Corning Cable Systems Llc Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
EP2678972B1 (en) 2011-02-21 2018-09-05 Corning Optical Communications LLC Providing digital data services as electrical signals and radio-frequency (rf) communications over optical fiber in distributed communications systems, and related components and methods
EP2702710A4 (en) 2011-04-29 2014-10-29 Corning Cable Sys Llc DETERMINING THE TRANSMISSION DELAY OF COMMUNICATIONS IN DISTRIBUTED ANTENNA SYSTEMS AND CORRESPONDING COMPONENTS, SYSTEMS AND METHODS
EP2702780A4 (en) 2011-04-29 2014-11-12 Corning Cable Sys Llc SYSTEMS, METHODS AND DEVICES FOR INCREASING HIGH-FREQUENCY (HF) PERFORMANCE IN DISTRIBUTED ANTENNA SYSTEMS
EP2832012A1 (en) 2012-03-30 2015-02-04 Corning Optical Communications LLC Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (mimo) configuration, and related components, systems, and methods
WO2013162988A1 (en) 2012-04-25 2013-10-31 Corning Cable Systems Llc Distributed antenna system architectures
EP2883416A1 (en) 2012-08-07 2015-06-17 Corning Optical Communications Wireless Ltd. Distribution of time-division multiplexed (tdm) management services in a distributed antenna system, and related components, systems, and methods
WO2014026005A1 (en) * 2012-08-09 2014-02-13 Axell Wireless Ltd. A digital capactiy centric distributed antenna system
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
CN105308876B (zh) 2012-11-29 2018-06-22 康宁光电通信有限责任公司 分布式天线系统中的远程单元天线结合
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9831898B2 (en) * 2013-03-13 2017-11-28 Analog Devices Global Radio frequency transmitter noise cancellation
CN105452951B (zh) 2013-06-12 2018-10-19 康宁光电通信无线公司 电压控制式光学定向耦合器
EP3008828B1 (en) 2013-06-12 2017-08-09 Corning Optical Communications Wireless Ltd. Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass)
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
EP3198755B1 (en) 2014-09-23 2020-12-23 Axell Wireless Ltd. Automatic mapping and handling pim and other uplink interferences in digital distributed antenna systems
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US10659163B2 (en) 2014-09-25 2020-05-19 Corning Optical Communications LLC Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
WO2016071902A1 (en) 2014-11-03 2016-05-12 Corning Optical Communications Wireless Ltd. Multi-band monopole planar antennas configured to facilitate improved radio frequency (rf) isolation in multiple-input multiple-output (mimo) antenna arrangement
WO2016075696A1 (en) 2014-11-13 2016-05-19 Corning Optical Communications Wireless Ltd. Analog distributed antenna systems (dass) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (rf) communications signals
US10312995B2 (en) 2014-12-11 2019-06-04 Space Systems/Loral, Llc Digital payload with variable high power amplifiers
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
EP3235336A1 (en) 2014-12-18 2017-10-25 Corning Optical Communications Wireless Ltd. Digital interface modules (dims) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
WO2016098111A1 (en) 2014-12-18 2016-06-23 Corning Optical Communications Wireless Ltd. Digital- analog interface modules (da!ms) for flexibly.distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
US20180007696A1 (en) 2014-12-23 2018-01-04 Axell Wireless Ltd. Harmonizing noise aggregation and noise management in distributed antenna system
US20160249365A1 (en) 2015-02-19 2016-08-25 Corning Optical Communications Wireless Ltd. Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (das)
US9912358B2 (en) 2015-03-20 2018-03-06 Analog Devices Global Method of and apparatus for transmit noise reduction at a receiver
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
RU2662727C2 (ru) * 2015-04-20 2018-07-30 Леонид Петрович Половинкин Сверхвысокочастотное приемо-передающее устройство
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10862529B2 (en) 2015-08-18 2020-12-08 Wilson Electronics, Llc Separate uplink and downlink antenna repeater architecture
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
EP3363125A4 (en) * 2015-10-14 2019-09-04 Wilson Electronics, LLC CHANNELING FOR SIGNAL AMPLIFIERS
US10715302B2 (en) 2015-10-14 2020-07-14 Wilson Electronics, Llc Channelization for signal boosters
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)
CA3037957A1 (en) * 2016-09-23 2018-03-29 Wilson Electronics, Llc Booster with an integrated satellite location system module
US10673517B2 (en) 2016-11-15 2020-06-02 Wilson Electronics, Llc Desktop signal booster
US20190196555A1 (en) * 2017-06-16 2019-06-27 Wilson Electronics, Llc Multiple donor antenna repeater
US10879995B2 (en) 2018-04-10 2020-12-29 Wilson Electronics, Llc Feedback cancellation on multiband booster
US10879996B2 (en) * 2018-04-10 2020-12-29 Wilson Electronics, Llc Feedback cancellation on multiband booster
US11764859B2 (en) * 2020-07-10 2023-09-19 Wilson Electronics, Llc Software-defined filtering in a repeater

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598410A (en) * 1984-09-17 1986-07-01 Ncr Corporation Bidirectional repeater apparatus
US5867535A (en) * 1995-08-31 1999-02-02 Northrop Grumman Corporation Common transmit module for a programmable digital radio
US6085077A (en) * 1997-01-21 2000-07-04 Us Air Force Hardware efficient digital channelized receiver
US6151373A (en) * 1997-04-03 2000-11-21 At&T Corp. Weak signal resolver
IT1295392B1 (it) * 1997-09-19 1999-05-12 Francesco Vatalaro Sistema di equalizzazione e precompensazione per comunicazioni con accesso tdma
US6529488B1 (en) * 1998-08-18 2003-03-04 Motorola, Inc. Multiple frequency allocation radio frequency device and method
US6483817B1 (en) * 1998-10-14 2002-11-19 Qualcomm Incorporated Digital combining of forward channels in a base station
US6161024A (en) * 1998-10-15 2000-12-12 Airnet Communications Corporations Redundant broadband multi-carrier base station for wireless communications using omni-directional overlay on a tri-sectored wireless system
US6370371B1 (en) * 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
DE19854167C2 (de) * 1998-11-24 2000-09-28 Siemens Ag Frequenzstabilisierte Sende-/Empfangsschaltung
KR100342536B1 (ko) * 1999-12-20 2002-06-28 윤종용 온도에 따른 수신전계강도 보상 장치 및 방법
WO2001052442A1 (en) * 2000-01-10 2001-07-19 Airnet Communications Corporation Method and apparatus for equalization in transmit and receive levels in a broadband transceiver system
DE10029424C2 (de) * 2000-06-15 2002-04-18 Infineon Technologies Ag Digitales Interpolationsfilter
SG99310A1 (en) * 2000-06-16 2003-10-27 Oki Techno Ct Singapore Pte Methods and apparatus for reducing signal degradation
WO2002032000A1 (en) * 2000-10-11 2002-04-18 Airnet Communications Corporation Method and apparatus employing a remote wireless repeater for calibrating a wireless base station having an adaptive antenna array
US7027498B2 (en) * 2001-01-31 2006-04-11 Cyntrust Communications, Inc. Data adaptive ramp in a digital filter
US20030114103A1 (en) * 2001-12-19 2003-06-19 Radio Frequency Systems, Inc. Repeater for use in a wireless communication system
US6650185B1 (en) * 2002-04-26 2003-11-18 Motorola, Inc Frequency selective distributed amplifier
US6792057B2 (en) * 2002-08-29 2004-09-14 Bae Systems Information And Electronic Systems Integration Inc Partial band reconstruction of frequency channelized filters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638426A (zh) * 2012-03-19 2012-08-15 航天科工深圳（集团）有限公司 一种基于频率的通信互连系统及其实现方法
CN109391274A (zh) * 2018-09-25 2019-02-26 中国联合网络通信集团有限公司 一种数据处理方法及设备
CN109391274B (zh) * 2018-09-25 2020-06-30 中国联合网络通信集团有限公司 一种数据处理方法及处理装置、无线中继设备以及介质

Also Published As

Publication number Publication date
ES2390268T3 (es) 2012-11-08
KR100992663B1 (ko) 2010-11-08
CA2490529C (en) 2012-12-11
EP1522155A2 (en) 2005-04-13
EA006619B1 (ru) 2006-02-24
EP1522155A4 (en) 2010-06-02
EA200500050A1 (ru) 2005-08-25
KR20050024345A (ko) 2005-03-10
WO2004002015A2 (en) 2003-12-31
CA2490529A1 (en) 2003-12-31
AU2003238647A1 (en) 2004-01-06
US20030236067A1 (en) 2003-12-25
IL165824A0 (en) 2006-01-15
US6873823B2 (en) 2005-03-29
EP1522155B1 (en) 2012-07-04
WO2004002015A3 (en) 2004-03-04
DE20321814U1 (de) 2010-07-29

Similar Documents

Publication Publication Date Title
CN1685632A (zh) 具有数字信道选择器的中继器
US7460831B2 (en) System and method for excluding narrow band noise from a communication channel
US5870665A (en) Mobile satellite communication terminal
US5509028A (en) Radio transmission method using repeater stations with spectrum reversal
US5809398A (en) Channel selective repeater
EP0492851B1 (en) Microcellular communications system using space diversity reception
US5987304A (en) Repeater with variable bandwidth
US6374119B1 (en) System and method for in-building mobile communications
CA2333574C (en) Repeater apparatus
CN1261744A (zh) 无线通信系统的功率控制
EP0468688B1 (en) Method and apparatus for providing wireless communications between remote locations
CN1362799A (zh) 使用菊花链方法的光中继器及其方法
US6292652B1 (en) Repeater having frequency conversion
GB2350755A (en) Software portable telephone set
EP0905914A2 (en) Apparatus for cancelling radio frequency interference between transmitting antenna and receiving antenna, repeating system and transmitting and receiving system using the same
US20040014438A1 (en) System and method for excluding narrow band noise from a communication channel
US20040209571A1 (en) Apparatus for increasing the capacity between transmitters and receivers in short-range wireless networks
CN1126275C (zh) 用于减小带通滤波器系统中互调的电路装置
CN2694631Y (zh) 移动通信移频无线转发一点对多点信号分布系统
CN114449662B (zh) 一种变频处理电路及接入设备
CN1635717A (zh) 移动通信移频无线转发一点对多点信号分布系统
CN216531312U (zh) 卫星射频信号转发系统
US11611363B2 (en) Configurable smart radio module
WO2008009982A2 (en) Rf distribution through existing cable
JP2004260371A (ja) リピータ装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1084517

Country of ref document: HK

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1084517

Country of ref document: HK