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    • 2. 发明授权
    • Low complexity, iterative approach to active interference cancellation
    • 低复杂度,迭代方法主动干扰消除
    • US07675984B1
    • 2010-03-09
    • US11480314
    • 2006-06-30
    • Nick CarboneTim Gallagher
    • Nick CarboneTim Gallagher
    • H04K1/10
    • H04L27/2626H04L25/03834
    • Generating a notch in an Orthogonal Frequency Division Multiplexing (OFDM) frequency spectrum includes determining a first active interference cancellation (AIC) tone, comparing the first AIC tone with an amplitude limit, in the event that the first AIC tone exceeds the amplitude limit, constraining the first AIC tone, and determining a second AIC tone based at least in part on the first AIC tone. An Active Interference Cancellation (AIC) tone generator includes an interface configured to receive a plurality of tones, a processing component coupled to the interface, configured to determine a first AIC tone, compare the first AIC tone with an amplitude limit, and in the event that the first AIC tone exceeds the amplitude limit, constrain the first AIC tone, and determine a second AIC tone based at least in part on the first AIC tone.
    • 在正交频分复用(OFDM)频谱中产生陷波包括:在第一AIC音超过振幅限制的情况下,确定第一有效干扰消除(AIC)音,将第一AIC音调与振幅限制进行比较,约束 第一AIC音调,以及至少部分地基于第一AIC音调确定第二AIC音调。 有源干扰消除(AIC)音产生器包括被配置为接收多个音调的接口,耦合到接口的处理部件,被配置为确定第一AIC音调,将第一AIC音调与振幅限制进行比较,并且在事件 第一AIC音超过振幅限制,约束第一AIC音,并且至少部分地基于第一AIC音调确定第二AIC音。
    • 4. 发明授权
    • Device and method for CDMA-signal power estimation
    • CDMA信号功率估计的装置和方法
    • US06836647B2
    • 2004-12-28
    • US10120569
    • 2002-04-10
    • Roberto RiminiNick Carbone
    • Roberto RiminiNick Carbone
    • H04B1700
    • H03G3/3068H04B1/707
    • A system and method for estimating the power-level of a signal received at a mobile-station receiver operating in a wireless network according to a CDMA standard. An analog automatic gain controller (AGC) loop, a digital filter, and a digital AGC loop are used, in sequence, to process a received RF signal that has been amplified, converted to baseband, and filtered using an analog baseband signal. The linear gain values of the analog AGC and the digital AGC are multiplied to produce a gain-value product. The logarithm of the gain-value product is used for executing the power-estimating function by comparison to a predetermined received-signal power estimation curve.
    • 一种用于估计在根据CDMA标准在无线网络中操作的移动台接收机处接收的信号的功率电平的系统和方法。 依次使用模拟自动增益控制器(AGC)环路,数字滤波器和数字AGC环路来处理已被放大,转换为基带的接收RF信号,并使用模拟基带信号进行滤波。 将模拟AGC和数字AGC的线性增益值相乘以产生增益值乘积。 通过与预定的接收信号功率估计曲线相比较,增益值乘积的对数被用于执行功率估计功能。
    • 6. 发明授权
    • T-spaced equalization for 1xEV systems
    • 1xEV系统的T间隔均衡
    • US06856646B2
    • 2005-02-15
    • US10101293
    • 2002-03-19
    • Nick CarboneThomas KenneyJean-Marie Tran
    • Nick CarboneThomas KenneyJean-Marie Tran
    • H04B1/707H04L25/03
    • H04B1/7117H04B1/7105H04L25/03006H04L25/03178H04L2025/03375H04L2025/03509
    • The present invention relates to systems and methods that facilitate compensating for intersymbol interference (e.g. due to non-nyquist filtering) in Code Division Multiple Access (CDMA) systems (e.g., IS 95 and IS2000 systems). The subject invention employs equalization filters (e.g., T-spaced equalizers) at fingers of a RAKE receiver. By effecting such equalization filtering at a downstream point in a receiving system, e.g., at the fingers of the RAKE receiver, the filters can be run so as to operate at lower rates as compared to conventional systems where filtering is effected upstream where time is not necessarily known thus requiring equalization filters to operate at significantly faster rates (e.g., 2× or 4× expected chip rate). Accordingly, as compared to conventional systems where the matching filters often are of substantial complexity (e.g., >80 taps) the present invention provides for less complex equalization filters thereby reducing overall system complexity and cost.
    • 本发明涉及有助于在码分多址(CDMA)系统(例如,IS 95和IS2000系统)中补偿符号间干扰(例如由于非奈奎斯特滤波)的系统和方法。 本发明在RAKE接收机的手指处使用均衡滤波器(例如,T间隔均衡器)。 通过在接收系统的下游点(例如在RAKE接收机的指状物处)进行这种均衡滤波,可以运行滤波器以便以较低的速率运行,与常规系统相比,其中滤波在时间不在的上游 因此需要均衡滤波器以显着更快的速率(例如,2x或4x预期码片速率)运行。 因此,与其中匹配滤波器通常具有相当复杂性(例如,> 80个抽头)的常规系统相比,本发明提供了较不复杂的均衡滤波器,从而降低了整体系统的复杂性和成本。