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    • 12. 发明申请
    • Management of variable-rate communication links
    • 可变速率通信链路的管理
    • US20080254749A1
    • 2008-10-16
    • US11787059
    • 2007-04-13
    • Ehud AshkenaziJonathan Friedmann
    • Ehud AshkenaziJonathan Friedmann
    • H04B7/00
    • H04L1/0026H04L1/0003H04L1/0009H04L1/0017
    • A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback.In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.
    • 一种用于通信的方法包括使用自适应编码和调制(ACM)将数据从发射机发射到接收机。 通过基于反馈选择定义前向纠错码和调制方案的ACM简档来设置数据速率。 在检测到反馈不可用时,发射器的操作独立于反馈而改变。 在另一种方法中,通过使用两个ACM简档通信来使用ACM的双向链路的两个相反方向交换数据。 在两个方向上定义了联合约束。 基于两个链路方向的第一和第二测量的接收质量度量来设置两个ACM简档,以满足联合约束。 在另一种方法中,ACM简档的子集被临时禁用,并且仅使用未被禁用的ACM简档来发送数据。
    • 13. 发明申请
    • Data rate coordination in protected variable-rate links
    • 受保护的可变速率链路中的数据速率协调
    • US20080130726A1
    • 2008-06-05
    • US11634781
    • 2006-12-05
    • Ran SoferJonathan Friedmann
    • Ran SoferJonathan Friedmann
    • H04B1/38
    • H04W28/22
    • A method for communication includes sending first data over a first communication link to a destination communication system at a first data rate, which can be varied. Second data, including at least a portion of the first data, is sent over a second communication link from the source communication system to the destination communication system at a second data rate, which can be varied. First and second data rates of the respective first and second communication links are dynamically set. At least the portion of the first data is selectively extracted from one of the first and second data at the destination communication system. In some embodiments, the first data equals the second data, and the data is extracted without data loss.
    • 一种用于通信的方法包括:以第一数据速率通过第一通信链路将第一数据发送到目的地通信系统,该第一数据速率可以变化。 包括第一数据的至少一部分的第二数据通过第二通信链路以第二数据速率从源通信系统发送到目的地通信系统,其可以被改变。 相应的第一和第二通信链路的第一和第二数据速率被动态地设置。 至少第一数据的部分在目的地通信系统中从第一和第二数据之一中选择性地提取。 在一些实施例中,第一数据等于第二数据,并且数据被提取而没有数据丢失。
    • 14. 发明申请
    • Management of Backhaul Nodes in a Microwave Backhaul
    • 微波回程管理回程节点
    • US20140003332A1
    • 2014-01-02
    • US13535668
    • 2012-06-28
    • James BennettJonathan Friedmann
    • James BennettJonathan Friedmann
    • H04W40/00
    • H04W24/04H04W64/003H04W92/20
    • A communications network is disclosed that includes one or more microwave backhaul nodes for routing communications between one or more near end mobile communications devices and one or more far end mobile communications devices. The communications network includes a central monitoring and control infrastructure, a remote monitoring and control infrastructure and/or a local monitoring and control infrastructure. The central monitoring and control infrastructure, the remote monitoring and control infrastructure and/or the local monitoring and control infrastructure can directly manage the one or more microwave backhaul nodes. Alternatively, the remote monitoring and control infrastructure and/or the local monitoring and control infrastructure can indirectly manage the one or more microwave backhaul nodes through the central monitoring and control infrastructure.
    • 公开了一种通信网络,其包括用于路由一个或多个近端移动通信设备与一个或多个远端移动通信设备之间的通信的一个或多个微波回程节点。 通信网络包括中央监控和控制基础设施,远程监控和控制基础设施和/或本地监控和控制基础设施。 中央监测和控制基础设施,远程监控和控制基础设施和/或本地监控和控制基础设施可以直接管理一个或多个微波回程节点。 或者,远程监控和控制基础设施和/或本地监控和控制基础设施可以通过中央监控和控制基础设施间接管理一个或多个微波回程节点。
    • 15. 发明授权
    • Multi-mode wireless communication link
    • 多模无线通信链路
    • US08126408B2
    • 2012-02-28
    • US12009728
    • 2008-01-22
    • Ahikam AhronyRagfi RavidJonathan Friedmann
    • Ahikam AhronyRagfi RavidJonathan Friedmann
    • H03C7/02
    • H04B7/0871H04B7/0617H04B7/0619H04B7/0669H04B7/0689H04B7/0693H04B7/0697H04B7/0877H04B7/10
    • A communication system includes first and second transmitters, which are coupled to transmit respective first and second Radio Frequency (RF) signals carrying first and second data over a wireless communication channel. The transmitters are coupled to select an operational mode from a group of operational modes and to operate in the selected operational mode. The group of the operational modes includes at least two of a protection mode, wherein the second transmitter serves as backup to the first transmitter, a spatial multiplexing mode, in which the first data is different from the second data and the first and second transmitters transmit simultaneously, and a beam-forming mode, in which the first data is identical to the second data, the second RF signal includes a phase-shifted replica of the first RF signal, and the first and second transmitters transmit simultaneously.
    • 通信系统包括第一和第二发射机,其被耦合以通过无线通信信道发送携带第一和第二数据的相应的第一和第二射频(RF)信号。 发射机被耦合以从一组操作模式中选择操作模式并且以所选择的操作模式操作。 该组操作模式包括保护模式中的至少两个,其中第二发射机用作第一发射机的备份,空间复用模式,其中第一数据不同于第二数据,第一和第二发射机发送 同时和波束形成模式,其中第一数据与第二数据相同,第二RF信号包括第一RF信号的相移副本,并且第一和第二发射机同时发射。
    • 17. 发明授权
    • Modem control using cross-polarization interference estimation
    • 使用交叉极化干扰估计的调制解调器控制
    • US07613260B2
    • 2009-11-03
    • US11285414
    • 2005-11-21
    • Amir EliazAvi TurgemanAhikam AharonyJonathan Friedmann
    • Amir EliazAvi TurgemanAhikam AharonyJonathan Friedmann
    • H04B1/10
    • H04L25/03057H04B7/10
    • A receiver includes an input circuit, which is coupled to at least one antenna so as to receive, process and digitize first and second signals, thus generating first and second streams of input samples. An interference cancellation circuit in the receiver includes first and second adaptive filters, which are respectively coupled to filter the first and second streams of input samples using respective first and second coefficients to generate respective first and second filter outputs. A phase rotator is adapted to apply a variable phase shift compensating for a phase deviation between the first and second signals, the phase rotator having at least one configuration parameter. A control module is operative to estimate signal characteristics of the interference cancellation circuit and to set the at least one configuration parameter of the phase rotator responsively to the estimated signal characteristics.
    • 接收机包括输入电路,其耦合到至少一个天线,以便接收,处理和数字化第一和第二信号,从而产生第一和第二输入样本流。 接收机中的干扰消除电路包括第一和第二自适应滤波器,其分别耦合以使用相应的第一和第二系数对输入采样的第一和第二流进行滤波,以产生相应的第一和第二滤波器输出。 相位旋转器适于对第一和第二信号之间的相位偏移应用可变相移补偿,所述相位旋转器具有至少一个配置参数。 控制模块可操作以估计干扰消除电路的信号特性并且响应于估计的信号特性来设置相位旋转器的至少一个配置参数。
    • 18. 发明申请
    • Multi-mode wireless communication link
    • 多模无线通信链路
    • US20090186585A1
    • 2009-07-23
    • US12009728
    • 2008-01-22
    • Ahikam AhronyRaqfi RavidJonathan Friedmann
    • Ahikam AhronyRaqfi RavidJonathan Friedmann
    • H03C7/02H04B1/02H04B7/02
    • H04B7/0871H04B7/0617H04B7/0619H04B7/0669H04B7/0689H04B7/0693H04B7/0697H04B7/0877H04B7/10
    • A communication system includes first and second transmitters, which are coupled to transmit respective first and second Radio Frequency (RF) signals carrying first and second data over a wireless communication channel. The transmitters are coupled to select an operational mode from a group of operational modes and to operate in the selected operational mode. The group of the operational modes includes at least two of a protection mode, wherein the second transmitter serves as backup to the first transmitter, a spatial multiplexing mode, in which the first data is different from the second data and the first and second transmitters transmit simultaneously, and a beam-forming mode, in which the first data is identical to the second data, the second RF signal includes a phase-shifted replica of the first RF signal, and the first and second transmitters transmit simultaneously.
    • 通信系统包括第一和第二发射机,其被耦合以通过无线通信信道发送携带第一和第二数据的相应的第一和第二射频(RF)信号。 发射机被耦合以从一组操作模式中选择操作模式并且以所选择的操作模式操作。 该组操作模式包括保护模式中的至少两个,其中第二发射机用作第一发射机的备份,空间复用模式,其中第一数据不同于第二数据,第一和第二发射机发送 同时和波束形成模式,其中第一数据与第二数据相同,第二RF信号包括第一RF信号的相移副本,并且第一和第二发射机同时发射。
    • 19. 发明授权
    • Correction of alternating I/Q imbalance and frequency offset impairments
    • 交替I / Q不平衡和频率偏移损伤的校正
    • US08532237B2
    • 2013-09-10
    • US12702351
    • 2010-02-09
    • Ronen ShakedJonathan Friedmann
    • Ronen ShakedJonathan Friedmann
    • H04B1/10
    • H04L27/3863H04L27/0014
    • A method for communication includes receiving a signal, which carries data bits and is distorted by multiple impairments including one or more frequency offsets and one or more In-phase/Quadrature (I/Q) imbalances. A corrected signal is produced by applying to the received signal a sequence of corrections to compensate for the impairments. The sequence includes a first and a third correction of one correction type and a second correction of another correction type intervening between the first and third corrections in the sequence, the correction types consisting of frequency offset corrections and I/Q imbalance corrections. The data bits are extracted from the corrected signal.
    • 一种用于通信的方法包括接收携带数据位并由包括一个或多个频率偏移和一个或多个同相/正交(I / Q)不平衡的多个损伤而失真的信号。 通过对接收到的信号应用校正信号来补偿校正后的信号,以补偿损伤。 该序列包括一个校正类型的第一和第三校正以及介于序列中的第一和第三校正之间的另一校正类型的第二校正,校正类型由频偏校正和I / Q不平衡校正组成。 从校正信号中提取数据位。
    • 20. 发明授权
    • Feedback-based management of variable-rate communication links
    • 基于反馈的可变速率通信链路管理
    • US08364179B2
    • 2013-01-29
    • US12750730
    • 2010-03-31
    • Ehud AshkenaziJonathan Friedmann
    • Ehud AshkenaziJonathan Friedmann
    • H04Q7/20
    • H04L1/0026H04L1/0003H04L1/0009H04L1/0017
    • A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback.In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.
    • 一种用于通信的方法包括使用自适应编码和调制(ACM)将数据从发射机发射到接收机。 通过基于反馈选择定义前向纠错码和调制方案的ACM简档来设置数据速率。 在检测到反馈不可用时,发射器的操作独立于反馈而改变。 在另一种方法中,通过使用两个ACM简档通信来使用ACM的双向链路的两个相反方向交换数据。 在两个方向上定义了联合约束。 基于两个链路方向的第一和第二测量的接收质量度量来设置两个ACM简档,以满足联合约束。 在另一种方法中,ACM简档的子集被临时禁用,并且仅使用未被禁用的ACM简档来发送数据。