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    • 41. 发明申请
    • TRANSIENT CONTROL SOLUTION FOR OPTICAL NETWORKS
    • 光网络瞬态控制解决方案
    • US20090116842A1
    • 2009-05-07
    • US12259865
    • 2008-10-28
    • Joseph T. StangoGuodong Zhang
    • Joseph T. StangoGuodong Zhang
    • H04J14/02
    • H04J14/0287H04J14/0217H04J14/0221H04J14/028
    • An optically amplified wavelength division multiplexing network has the functionality to add/drop channels at the optical add/drop multiplexing (OADM) nodes. The OADM node includes a receiver amplifier, an OADM module, and a transmitter amplifier. Once the OADM node detects a loss of signal (LOS) due to a fiber cut or network element failure upstream, the receiver amplifier is kept in operation as a noise source. The output of the receiver amplifier is immediately raised by increasing pump power to compensate for the LOS. The noise power received at the transmitter amplifier from the receiver amplifier is substantially equal to the signal power expected before LOS. The transient effect of downstream optical amplifiers is therefore completely suppressed and the inter-channel stimulated Raman scattering (SRS) induced spectrum tilt does not change. After the noise power is raised, the receiver amplifier may be shut down at a speed much slower than the speed of downstream amplifier control circuitry.
    • 光放大波分多路复用网络具有在光分插复用(OADM)节点上添加/丢弃信道的功能。 OADM节点包括接收机放大器,OADM模块和发射机放大器。 一旦OADM节点检测到由于上游光纤切断或网元故障导致的信号丢失(LOS),则接收机放大器作为噪声源保持运行。 接收放大器的输出通过增加泵浦功率来补偿LOS而立即升高。 接收机放大器在发射机放大器接收的噪声功率基本上等于LOS之前预期的信号功率。 因此,下游光放大器的瞬态效应被完全抑制,并且通道间受激拉曼散射(SRS)引起的光谱倾斜不改变。 在噪声功率提升后,接收机放大器可能以比下游放大器控制电路的速度慢得多的速度关闭。
    • 45. 发明申请
    • METHOD AND APPARATUS FOR TRANSMITTING CONTROL SIGNALING FOR MIMO TRANSMISSION
    • 用于发送用于MIMO传输的控制信令的方法和装置
    • US20080212701A1
    • 2008-09-04
    • US12031871
    • 2008-02-15
    • Kyle Jung-Lin PanGuodong Zhang
    • Kyle Jung-Lin PanGuodong Zhang
    • H04K1/10
    • H04W72/042H04B7/0417H04B7/0452H04L5/0023H04L5/0064H04L5/0091
    • A method and apparatus for processing multiple-input multiple-output (MIMO) transmission are disclosed. A wireless transmit/receive unit (WTRU) receives downlink control information including WTRU-specific MIMO and transport format information and MIMO information for all other WTRUs assigned to the same resource. The WTRU processes received MIMO data based on the downlink control information. The downlink control information may also include transport format information for all other WTRUs assigned to the same RB. The downlink control information may be transmitted via WTRU-specific control signaling. All WTRUs' MIMO and/or transport format information may be transmitted via resource-specific common control signaling. The downlink control signaling format may include at least one of a number of streams for the WTRU, a number of active WTRUs assigned to the same resource, a spatial channel identity for the WTRU, a MIMO mode, a precoding matrix index and a precoding vector index.
    • 公开了一种用于处理多输入多输出(MIMO)传输的方法和装置。 无线发射/接收单元(WTRU)接收包括分配给相同资源的所有其他WTRU的包括WTRU特定MIMO和传输格式信息和MIMO信息的下行链路控制信息。 WTRU基于下行链路控制信息处理接收到的MIMO数据。 下行链路控制信息还可以包括分配给相同RB的所有其他WTRU的传输格式信息。 可以经由WTRU特定的控制信令来发送下行链路控制信息。 所有WTRU的MIMO和/或传输格式信息可以经由资源特有的公共控制信令来发送。 下行链路控制信令格式可以包括用于WTRU的多个流中的至少一个,分配给相同资源的多个活动WTRU,WTRU的空间信道身份,MIMO模式,预编码矩阵索引和预编码向量 指数。
    • 47. 发明申请
    • WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING HYBRID TIMING AND FREQUENCY OFFSET FOR PROCESSING SYNCHRONIZATION SIGNALS
    • 用于处理同步信号的混合时序和频率偏移的无线通信方法和装置
    • US20080043882A1
    • 2008-02-21
    • US11828146
    • 2007-07-25
    • Guodong ZhangAllan Tsai
    • Guodong ZhangAllan Tsai
    • H03K9/00
    • H04L27/2655H04B17/21H04L27/2659H04L27/266H04L27/2675
    • The present invention is related to a receiver having a plurality of antennas for receiving and performing hybrid timing and frequency offset on at least one signal that includes at least one synchronization channel (SCH) symbol having a plurality of time domain repetitive blocks. The receiver further includes an auto-correlation unit that outputs an auto-correlation result and the power of the received signal, a coarse timing detection unit that generates a coarse timing metric, a frequency offset estimation unit that generates a coarse frequency offset metric based on the coarse timing metric and the received signal, a frequency offset compensation unit that generates a compensated version of the received signal, and a fine tuning detection unit that generates a fine tuning detection metric based on a sample of the compensated version of the received signal that is cross-correlated with a primary synchronization channel (P-SCH) code sequence.
    • 本发明涉及具有多个天线的接收机,用于在包括具有多个时域重复块的至少一个同步信道(SCH)符号的至少一个信号上接收和执行混合定时和频率偏移。 接收机还包括自相关单元,其输出自相关结果和接收信号的功率,产生粗定时度量的粗定时检测单元,产生粗频偏移度量的频偏估计单元,基于 粗略定时度量和接收信号,产生接收信号的补偿版本的频率偏移补偿单元,以及微调检测单元,其基于接收信号的补偿版本的采样生成微调检测度量, 与主同步信道(P-SCH)码序列交叉相关。