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    Phase filter and method for interference and noise reduction in systems with two signal paths
    31.
    发明申请
    Phase filter and method for interference and noise reduction in systems with two signal paths 审中-公开

    公开(公告)号：US20180198475A1

    公开(公告)日：2018-07-12

    申请号：US15731711

    申请日：2016-01-20

    Applicant: SZECHNIUK SLAWOMIR

    Inventor： SZECHNIUK SLAWOMIR

    IPC: H04B1/10

    CPC classification number: H04B1/10 ,  H04B1/1036 ,  H04B1/1081 ,  H04B7/02 ,  H04B7/0837 ,  H04B7/0842 ,  H04B7/0854

    Abstract: The developed method for reducing interference and noise reduction in systems with two signal paths is characterised in that the input signals x and y are supplied to the voltage adders SX and SY, and the components of the difference of these signals Uxy are added to the input signals x and y, but with opposite directions and the pairs of intermediate signals x1 and y1 and x1′ and y1′ are achieved, which are supplied respectively to the inputs of power combiners PC1 and PC2, whose output voltages, respectively the signals p1 and p1′ are compared with average values of pairs of signals x1 and y1 and x1′ and y1′, respectively as the values of Sr and Sr\ and the differences of these signals in the form of differential signals, respectively w1 and w1′, are supplied to the differential amplifiers with a gain kw and kw′, respectively, W1 and W2, whose output signals, respectively w2 and w2′ are supplied to the voltage adders, respectively SX and SY, at the output of which output signals x′ and y′ are achieved. For the assembly of two developed filters for a pair of signals of equal amplitude, damping of over 70 dB for angular differences at 25-180°, damping of over 40 dB for angular differences of +/−15° to +/−25° and damping of more than 40 dB for most signals of different amplitudes can be achieved.

    Adaptive interference canceller for multiple reference inputs
    32.
    发明授权
    Adaptive interference canceller for multiple reference inputs 有权

    公开(公告)号：US10014914B1

    公开(公告)日：2018-07-03

    申请号：US15621253

    申请日：2017-06-13

    Applicant: Neal David Becker

    Inventor： Neal David Becker

    IPC: H04B1/10 ,  H04B7/0404 ,  H04L27/34 ,  H04B7/02 ,  H04B7/00 ,  H04L5/14 ,  H04B1/525

    CPC classification number: H04B7/0404 ,  H04B1/1036 ,  H04B1/126 ,  H04B1/525 ,  H04B7/002 ,  H04B7/02 ,  H04B7/08 ,  H04L5/14 ,  H04L27/34

    Abstract: An interference canceller and a method for canceling interference are disclosed. The interference canceller includes: a subtractor to receive a primary signal including a desired signal and multiple interferers and to generate an output signal including the desired signal; a plurality of Finite Impulse Response (FIR) filters, wherein each FIR filter receives a reference signal from a plurality of reference signals and outputs a filtered reference signal; and a plurality of loop filters, wherein each loop filter outputs coefficients. In the interference canceller, each of the reference signals includes signals from a subset of the multiple interferers, each loop filter corresponds to one of the FIR filters and receives the corresponding reference signal, each loop filter receives the output signal, the output coefficients of each loop filter are based on the output signal and the corresponding reference signal, the output coefficients adaptively adjust the filtered reference signal of the corresponding FIR filter, and the subtractor subtracts each of the filtered reference signals from the primary signal to generate the output signal.

    Asymmetrical receivers for wireless communication
    35.
    发明授权
    Asymmetrical receivers for wireless communication 有权

    公开(公告)号：US09900893B2

    公开(公告)日：2018-02-20

    申请号：US15469451

    申请日：2017-03-24

    Applicant: AT&T Mobility II LLC

    Inventor： Arthur Richard Brisebois

    IPC: H04B1/00 ,  H04W72/04 ,  H04B1/7097 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/00

    CPC classification number: H04W72/0486 ,  H04B1/006 ,  H04B1/1036 ,  H04B1/7097 ,  H04B7/0413 ,  H04B7/0626 ,  H04B7/0871 ,  H04B2201/709709 ,  H04L5/0048 ,  H04L5/006 ,  H04W16/14 ,  H04W72/005

    Abstract: Receivers in a mobile device are configured to mitigate receiver overload and fully or nearly-fully utilize available spectrum for communication. Configuration is dictated at least in part by at least one of radio link quality or available receiver specifications, and it can be affected by the mobile device or a base station that serves the mobile device. Receiver configuration includes various spectrally asymmetric receivers that tune respective disparate portions of the available spectrum to maximize utilization thereof in the spectral regions prone to overload conditions. In severe overload conditions, a single receiver can be configured to operate in a frequency band spectrally adjacent to a sub-band that leads to overload conditions when employed for telecommunication. To improve performance, the single receiver configuration can be supplemented with at least one of transmit diversity operation, asymmetric multicarrier spreading, or downlink power boost of asymmetrical multicarrier spreading.

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