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    • 2. 发明授权
    • Communication system using cables carrying ethernet signals
    • 使用承载以太网信号的电缆的通信系统
    • US08897215B2
    • 2014-11-25
    • US12674680
    • 2010-02-07
    • Isaac ShapiraOfer SabanAmi Hazani
    • Isaac ShapiraOfer SabanAmi Hazani
    • H04W4/00H04L12/413
    • H04L12/413
    • It is provided a method for transmitting a wireless signal on Ethernet wiring The wireless signal is received in a hub unit for delivery to a remote unit In the hub unit the wireless signal is down converted to a down-converted frequency band for propagation on the Ethernet wiring A reference signal associated with a local oscillator used for the down conversion is embedded on a synchronous Ethernet stream that may include Ethernet data received at hub unit The synchronous Ethernet stream and the down converted wireless signal are submitted through the Ethernet wiring to the remote unit. The synchronous Ethernet stream may include data for management of electronic circuits installed in the remote unit, as well as a synchronization signal used thereof A converted replica of the first signal may be included in digital form in frames of the synchronous Ethernet stream.
    • 提供了一种用于在以太网接线上发送无线信号的方法无线信号被接收在集线器单元中以传送到远程单元在集线器单元中,无线信号被下变频到下变频频带以在以太网上传播 接线与用于下变频的本地振荡器相关联的参考信号嵌入同步以太网流中,该同步以太网流可包括在集线器单元处接收的以太网数据。同步以太网流和下变频无线信号通过以太网接线提交到远程单元 。 同步以太网流可以包括用于管理安装在远程单元中的电子电路的数据,以及使用其的同步信号。第一信号的转换副本可以数字形式包含在同步以太网流的帧中。
    • 5. 发明申请
    • Frequency Source Synchronization And Redundancy
    • 频率源同步和冗余
    • US20090029663A1
    • 2009-01-29
    • US11828363
    • 2007-07-26
    • Ofer SabanIsaac ShapiraRami ReuveniYair Shapira
    • Ofer SabanIsaac ShapiraRami ReuveniYair Shapira
    • H04B1/16
    • H04B7/12
    • A system and method for ensuring proper synchronization of a plurality of frequency sources used in reception diversity-based radio reception. The frequency sources are concatenated in a synchronization loop, through which one frequency source having a high performance oscillator is configured as a master source. Through its oscillator, the master provides an internal synchronization signal that synchronizes all other sources, which have lower performance oscillators and are configured as slaves. Upon a failure in the master oscillator or in the synchronization loop, a slave source takes over as an alternative master source and provides its internal oscillator signal as an alternative synchronization signal to all other frequency sources.
    • 一种用于确保在基于接收分集的无线电接收中使用的多个频率源的适当同步的系统和方法。 频率源被连接在同步环路中,通过该同步环路将具有高性能振荡器的一个频率源配置为主源。 通过其振荡器,主器件提供内部同步信号,使所有其他源(其具有较低性能振荡器)并被配置为从器件的同步信号。 在主振荡器或同步环路故障时,从源接收作为替代主站,并将其内部振荡器信号作为替代同步信号提供给所有其他频率源。
    • 7. 发明申请
    • Method and System for Equalizing Cable Losses in a Distributed Antenna System
    • 分布式天线系统中电缆损耗均衡的方法与系统
    • US20080174502A1
    • 2008-07-24
    • US12016459
    • 2008-01-18
    • Yair OrenIgor BerlinOfer Saban
    • Yair OrenIgor BerlinOfer Saban
    • H01Q21/00G01R29/08
    • H04B1/0064H04B7/06H04B7/08H04B17/12H04B17/21H04W88/085
    • The invention is directed to a method and system for equalizing the signal losses over cable runs in a Distributed Antenna System (DAS). In a DAS, two or more antennae are connected to the system by cable runs that can vary widely in length. As a result, the signal loss over a given cable run can also vary widely which can impact the design and deployment of the DAS and reduce antenna spacing. In addition, for a broadband DAS that supports many frequency bands or ranges using a common antenna unit, the signal losses vary with respect to frequency further making it difficult to equalize the cable losses. According to one embodiment of the invention, the method and system provide for measuring and adjusting the signal losses of each cable run to be a predefined value. According to another embodiment of the invention, the DAS can include a hybrid passive-active antenna unit which includes a frequency multiplexer that separates the signal into frequency bands or ranges that are connected to an antenna element associated with a particular frequency band or range. Where a single frequency band needs to be amplified (or attenuated), a single band amplification block (SBAB) can be inserted in the connection between the frequency multiplexer and the antenna element to amplify (or attenuate) the desired frequency band. Where more than one frequency band need to be amplified (or attenuated), a multiband amplification block (MBAB) can be inserted in the connection between the frequency multiplexer and the appropriate antenna element to amplify (or attenuate) the desired frequency bands.
    • 本发明涉及一种用于均衡分布式天线系统(DAS)中的电缆运行的信号损耗的方法和系统。 在DAS中,两个或更多个天线通过长度可能变化很大的电缆连接到系统。 因此,给定电缆运行时的信号损耗也可能变化很大,这可能会影响DAS的设计和部署,并减少天线间距。 此外,对于支持使用公共天线单元的许多频带或范围的宽带DAS,信号损耗相对于频率而变化,进一步使得难以平衡电缆损耗。 根据本发明的一个实施例,该方法和系统提供了将每个电缆运行的信号损耗测量和调整为预定值。 根据本发明的另一实施例,DAS可以包括混合无源 - 有源天线单元,其包括频率复用器,其将信号分离成与特定频带或范围相关联的天线元件连接的频带或范围。 在单个频带需要被放大(或衰减)的情况下,可以在频率复用器和天线元件之间的连接中插入单频带放大块(SBAB)以放大(或衰减)期望的频带。 在需要放大(或衰减)多于一个频带的情况下,可以在频率多路复用器和适当的天线元件之间的连接中插入多频带放大块(MBAB)以放大(或衰减)期望的频带。
    • 8. 发明申请
    • DISTRIBUTED ANTENNA SYSTEM FOR MIMO TECHNOLOGIES
    • MIMO技术的分布式天线系统
    • US20140064399A1
    • 2014-03-06
    • US14078949
    • 2013-11-13
    • Yair OrenIgor BerlinOfer SabanIsaac ShapiraRami Reuven
    • Yair OrenIgor BerlinOfer SabanIsaac ShapiraRami Reuven
    • H04B7/04
    • H04B7/0413H04B1/40H04B7/022H04B7/0602H04B10/271
    • A method and system for supporting M1MO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements.
    • 一种用于支持M1MO技术的方法和系统,其可以要求在传统的分布式天线系统(DAS)上传输多个空间流。 根据本发明,在DAS的一端,每个空间流在频率上移动到不与分配给其他空间流的频带重叠的预分配频带(例如频率低于本机频率的频带) (或由DAS携带的任何其他服务的乐队)。 每个空间流可以组合并通过公共同轴电缆作为组合信号传输。 在DAS的另一个“端”处,不同的流被移回到它们的原始(重叠)频率,但是通过物理上分离的天线元件辐射来保持其各自的“身份”。
    • 9. 发明授权
    • Communication system using low bandwidth wires
    • 通信系统采用低带宽电线
    • US08594133B2
    • 2013-11-26
    • US12739143
    • 2008-10-22
    • Isaac ShapiraOfer SabanYair Zeev Shapira
    • Isaac ShapiraOfer SabanYair Zeev Shapira
    • H04J3/06
    • H04L7/0331H04J1/06H04L7/0083
    • A high frequency signal is down-converted into an intermediate frequency signal, transmitted over a limited bandwidth medium from a master unit to a remote unit and up-converted back into its original high frequency at the remote unit. The up-conversion is aided by reconstruction of a reference signal embedded at the master unit as a carrier for a management signal which is transmitted to the remote unit through the same limited bandwidth medium together with the intermediate frequency signal. The reference signal is reconstructed using a phase locked loop which includes a charge pump and is kept stable during intervals between bits and messages by a charge pump shutter.
    • 高频信号被下变频成中频信号,通过有限带宽介质从主单元传输到远程单元,并在远程单元上被上转换回其原始高频。 通过重构嵌入在主单元中的参考信号作为管理信号的载体来辅助上转换,该管理信号通过与中频信号一起通过相同的有限带宽介质发送到远程单元。 使用包括电荷泵的锁相环重建参考信号,并且通过电荷泵快门在位和消息之间的间隔期间保持稳定。
    • 10. 发明申请
    • DISTRIBUTED ANTENNA SYSTEM FOR MIMO TECHNOLOGIES
    • MIMO技术的分布式天线系统
    • US20120321314A1
    • 2012-12-20
    • US13598078
    • 2012-08-29
    • Yair OrenIgor BerlinOfer SabanIsaac ShapiraRami Reuven
    • Yair OrenIgor BerlinOfer SabanIsaac ShapiraRami Reuven
    • H04W72/04H04B7/216H04J14/00
    • H04B7/0413H04B1/40H04B7/022H04B7/0602H04B10/271
    • The invention is directed to a method and system for supporting MIMO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements.
    • 本发明涉及用于支持MIMO技术的方法和系统,其可以要求在传统的分布式天线系统(DAS)上传输多个空间流。 根据本发明,在DAS的一端,每个空间流在频率上移动到不与分配给其他空间流的频带重叠的预分配频带(例如频率低于本机频率的频带) (或由DAS携带的任何其他服务的乐队)。 每个空间流可以组合并通过公共同轴电缆作为组合信号传输。 在DAS的另一端,不同的流被移回到它们的原始(重叠)频率,但是通过物理上分离的天线元件辐射来保持其各自的身份。