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    • 51. 发明授权
    • Fuzzy-logic spread-spectrum adaptive power control
    • 模糊逻辑扩频自适应功率控制
    • US5963583A
    • 1999-10-05
    • US7026
    • 1998-01-14
    • Sorin DavidoviciEmmanuel Kanterakis
    • Sorin DavidoviciEmmanuel Kanterakis
    • H04B1/707H04B7/005H04B15/00H04K1/00H04L27/30
    • H04W52/228H04B1/707Y02B60/50
    • A fuzzy-logic spread-spectrum adaptive power control system comprising a base station and a plurality of remote units. The base station receives a spread-spectrum signal, and samples the despread spread-spectrum signal at a peak correlation time of the data channel, and at a non-peak correlation time of the data channel. This in turn generates a signal level and a noise level, respectively. A signal-to-noise ratio calculator generates a signal-to-noise ratio from the signal level and the noise level. A fuzzy-logic controller compares the signal-to-noise ratio to a set of predetermined thresholds, and using a state machine, generates a control signal which is thereby transmitted to the remote unit, indicating the amount by which to increase or decrease transmitted power. Each remote unit demodulates the control signal, and a transmitter controller adjusts a power level of the remote-unit spread-spectrum transmitter.
    • 一种模糊逻辑扩频自适应功率控制系统,包括基站和多个远程单元。 基站接收扩频信号,并在数据信道的峰值相关时间和数据信道的非峰值相关时间对解扩展频谱信号进行采样。 这又分别产生信号电平和噪声电平。 信噪比计算器从信号电平和噪声电平产生信噪比。 模糊逻辑控制器将信噪比与一组预定阈值进行比较,并且使用状态机产生控制信号,由此发送到远程单元,指示增加或减少发射功率的量 。 每个远程单元解调控制信号,并且发射机控制器调整远程单元扩频发射机的功率电平。
    • 52. 发明授权
    • Multistage linear receiver for DS-CDMA systems
    • 用于DS-CDMA系统的多级线性接收机
    • US5757791A
    • 1998-05-26
    • US634160
    • 1996-04-18
    • Emmanuel KanterakisShimon Moshavi
    • Emmanuel KanterakisShimon Moshavi
    • H04B1/7105H04J13/02
    • H04B1/7105
    • A multistage linear receiver for extracting data embedded in a received spread-spectrum signal having a plurality of channels using a direct sequence code division multiple access system. The multistage receiver comprises an initial plurality of spread-spectrum detectors, a plurality of detector weighting devices, a first plurality of product devices, a first combiner, a first plurality of spread-spectrum detectors, a first plurality of weight-product devices and an output combiner. The initial plurality of spread-spectrum detectors despreads and delays the plurality of channels to generate a plurality of detector-output signals. The detector weighting devices weight the plurality of detector-output signals with a plurality of detector weights as a plurality of weighted-detector signals. The plurality of detector-output signals are spread-spectrum processed by the first plurality of product devices to generate a first plurality of spread-spectrum signals which are combined by the first combiner as a first combined signal. The first plurality of spread-spectrum detectors despreads and delays the first combined signal as a first plurality of despread-combined signals which are weighted by the first plurality of weight-product devices to generate a first plurality of weighted signals. The output combiner combines the first plurality of weighted signals and the plurality of weighted-detector signals to extract the data. Additional stages comprising product devices, combiners and weight-product devices may be added as necessary or desired.
    • 一种用于使用直接序列码分多址系统提取嵌入在具有多个信道的接收扩频信号中的数据的多级线性接收机。 多级接收机包括初始多个扩频检测器,多个检测器加权装置,第一多个产品装置,第一组合器,第一多个扩频检测器,第一多个加权产品装置和 输出组合器。 初始多个扩频检测器对多个信道进行解扩和延迟以产生多个检测器输出信号。 检测器加权装置用多个检测器权重来加权多个检测器输出信号作为多个加权检测器信号。 多个检测器输出信号由第一多个乘积装置进行扩频处理,以产生由第一组合器组合为第一组合信号的第一多个扩频信号。 第一组多个扩频检测器对第一组合信号进行解扩和延迟,作为由第一多个加权乘积装置加权的第一多个解扩组合信号,以产生第一多个加权信号。 输出组合器组合第一多个加权信号和多个加权检测器信号以提取数据。 可以根据需要或需要添加包括产品装置,组合器和重量产品装置的附加阶段。
    • 53. 发明授权
    • Fast phase estimation in digital communication systems
    • 数字通信系统中的快速相位估计
    • US5742637A
    • 1998-04-21
    • US700012
    • 1996-08-20
    • Emmanuel KanterakisSorin Davidovici
    • Emmanuel KanterakisSorin Davidovici
    • H03D3/22H04B1/707H04B1/7085H04L27/00H04L27/233H04K1/00H04L27/22
    • H04B1/7085H03D3/22H04B1/707H04L27/2332H04L2027/003H04L2027/0048
    • A system and method for synchronizing a Costas Loop for demodulating a received spread-spectrum signal using a squaring device, a filter, a phase detector, a phase unwrapping subsystem, an oscillator, a derotator and a decision device. Phase-shift-keying modulation is removed from a received spread-spectrum signal through squaring. An in-phase component and a quadrature-phase component of the received spread-spectrum signal are filtered to generate an arbitrary phase angle, .theta.(t). A value of .theta. proportional to .theta.(t) is then estimated. The estimated .theta. value is processed to obtain an estimate for the .phi. value, and a cosine and a sine of the estimated .phi. value are generated by the oscillator. The derotator derotates the in-phase-component and the quadrature-phase component of the received spread-spectrum signal with the cosine and the sine of the estimated .theta. value to generate a demodulated signal. The decision device evaluates the demodulated signal and outputs data.
    • 一种用于使用平方装置,滤波器,相位检测器,相位解包子系统,振荡器,解旋器和判定装置来解调接收的扩频信号的科斯塔斯环路的系统和方法。 通过平方从接收的扩频信号中去除相移键控调制。 对接收的扩频信号的同相分量和正交相位分量进行滤波以产生任意的相位角θ(t)。 然后估计与theta(t)成比例的θ值。 处理估计的θ值以获得phi值的估计,并且由振荡器产生估计的phi值的余弦和正弦。 解旋器利用估计的θ值的余弦和正弦消除接收的扩频信号的同相分量和正交相位分量,以产生解调信号。 判定装置评估解调信号并输出​​数据。
    • 55. 发明授权
    • Enhanced uplink packet transfer
    • 增强的上行链路分组传输
    • US08548026B2
    • 2013-10-01
    • US11976958
    • 2007-10-30
    • Emmanuel Kanterakis
    • Emmanuel Kanterakis
    • H04B1/69H04B7/216
    • H04W72/0406H04W72/12H04W76/10H04W76/30
    • An enhanced spread-spectrum uplink technique provides more efficient packet transfer in a wireless network. A mobile station requests to utilize an uplink channel, typically, a physical dedicated channel. If the network will grant access, a base station sends back a channel-request-granted message, which specifies a transmission start time and length. The base station starts related downlink transmissions at the start time, and at a time thereafter, the mobile station starts sending packet data over the uplink physical dedicated channel. After a transmission of no more that the specified length, the mobile station ceases its uplink transmission on the dedicated channel, and the base station and/or the mobile station can immediately release one or more channel resources. The grant message and/or the subsequent signaling communications from the base station may also specify a modulation scheme and a channelization code for the uplink channel.
    • 增强的扩频上行链路技术在无线网络中提供更有效的分组传送。 移动台请求利用上行链路信道,通常是物理专用信道。 如果网络将授权接入,则基站发回指定传输开始时间和长度的信道请求授权消息。 基站在开始时间开始相关的下行链路传输,此后,移动台通过上行链路物理专用信道开始发送分组数据。 在不再具有指定长度的传输之后,移动台在专用信道上停止其上行链路传输,并且基站和/或移动台可以立即释放一个或多个信道资源。 授权消息和/或来自基站的后续信令通信还可以指定用于上行链路信道的调制方案和信道化码。
    • 56. 发明申请
    • Mobile system and method for position estimation
    • 移动系统和位置估计方法
    • US20090303130A1
    • 2009-12-10
    • US12457264
    • 2009-06-05
    • Emmanuel Kanterakis
    • Emmanuel Kanterakis
    • G01S1/24
    • G01S5/0289G01S5/06
    • The present invention provides a method by which the position of a wireless emitter can be estimated by using a minimum of two wireless transceiver devices. The invention relies on physically moving the wireless transceiver devices to new position locations in order to obtain multiple time difference of arrival measurements. The time difference of arrival measurements can then be combined to derive estimates for the position of the emitter. At least one of the two wireless transceiver devices needs to be mobile with the other one fixed. Using this invention, any proportion of mobile and fixed transceiver devices can be used to derive the position of a wireless emitter. The wireless emitter to be located is not assumed to provide any information about itself to the wireless transceivers used for estimating its position location. The method is referred here as a Mobile-TDOA method or M-TDOA. The method is very general, very flexible and can be very inexpensive due to the minimum amount of hardware resources required.
    • 本发明提供了一种通过使用至少两个无线收发器装置来估计无线发射器的位置的方法。 本发明依赖于将无线收发器设备物理地移动到新的位置位置,以便获得多个到达时间差的测量值。 然后可以组合到达测量的时间差以导出发射器的位置的估计。 两个无线收发器设备中的至少一个需要移动,另一个固定。 使用本发明,可以使用任何比例的移动和固定收发器设备来导出无线发射器的位置。 未设置的无线发射器不被假定为用于估计其位置位置的无线收发器提供关于其自身的任何信息。 该方法在此被称为Mobile-TDOA方法或​​M-TDOA。 该方法非常通用,非常灵活,由于所需的硬件资源数量最少,可以非常便宜。
    • 57. 发明申请
    • Channel capacity optimization for packet services
    • 分组业务的信道容量优化
    • US20060268717A1
    • 2006-11-30
    • US11496590
    • 2006-08-01
    • Emmanuel Kanterakis
    • Emmanuel Kanterakis
    • H04J1/16H04B7/216
    • H04L47/30H04L47/14H04L47/50H04L47/56H04L47/6255
    • A radio network controller (RNC) application controls packet communications through base stations serving wireless remote stations. In the embodiments, the RNC stores each packet received for a wireless remote station in a buffer and maintains a BCN counter value representing the amount of buffered data. The RNC maintains a maximum accumulation timer (Timeracc), and it restarts an inter-packet arrival timer (Timerint) upon receipt of each packet for the station. The RNC initiates transmissions to the station in response to certain events, including expiration of either of the timers Timerint and Timeracc, and if the BCN counter value exceeds a threshold. However, the transmissions use either a dedicated channel cell-state or a forward access channel state, depending on which event triggered each transmission. The RNC also may instruct the remote station to return to the forward access channel state following communication in the dedicated channel cell-state.
    • 无线电网络控制器(RNC)应用通过服务于无线远程站的基站来控制分组通信。 在实施例中,RNC将针对无线远程站接收的每个分组存储在缓冲器中,并维持表示缓冲数据量的BCN计数器值。 RNC保持最大累加定时器(定时器计数器),并且在接收到站的每个分组时重新启动分组间到达定时器(定时器)。 响应于某些事件,RNC发起到站的传输,包括计时器定时器定时器和定时器计数器中的任何一个的终止,以及BCN计数器值是否超过阈值。 然而,传输使用专用信道小区状态或前向接入信道状态,取决于哪个事件触发每个传输。 在专用信道小区状态的通信之后,RNC还可以指示远程站返回到正向接入信道状态。