METHODS FOR COMPUTATION-FREE WIDEBAND SPECTRAL CORRELATION AND ANALYSIS

    公开(公告)号:US20220100008A1

    公开(公告)日:2022-03-31

    申请号:US17467887

    申请日:2021-09-07

    Inventor: Vahid Ataie

    Abstract: An apparatus for generating a set of spectral correlation coefficients of an input signal includes: a master laser configured to generate an optical frequency comb signal; a first optical modulator configured to modulate the optical frequency comb signal with an input signal to generate a plurality of spectral copies of the input signal; a dispersive element configured to delay the plurality of spectral copies of the input signal by a wavelength-dependent time delay; a second optical modulator configured to modulate the delayed plurality of spectral copies with a conjugate of the input signal; and an optical comb filter configured to integrate the conjugate modulated plurality of spectral copies of the input signal to generate a set of cyclic autocorrelation coefficients.

    DISCRETE FOURIER TRANSFORM SIZE DECOMPOSITION

    公开(公告)号:US20200351138A1

    公开(公告)日:2020-11-05

    申请号:US16834421

    申请日:2020-03-30

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, based at least in part on a decomposition rule for a discrete Fourier transform (DFT) block, a plurality of decomposition groups for tones, corresponding to a plurality of antenna ports of the UE, of a transmission. The UE may map the tones to the plurality of decomposition groups for transmission processing, and transmit, using the plurality of antenna ports, the transmission based at least in part on transmission processing. Numerous other aspects are provided.

    ADVANCED BACKHAUL SERVICES
    54.
    发明申请

    公开(公告)号:US20200322000A1

    公开(公告)日:2020-10-08

    申请号:US16900524

    申请日:2020-06-12

    Abstract: “Tiered” groups of devices (tiered service radios) and/or licenses associated with the devices or users so as to provide a hieratical set of interference protection mechanisms for members of each tier of service are disclosed. Point-to-point and point-to-multipoint data links for any communication application, including wireless backhaul applications, are also disclosed. Exemplary systems, devices, and methods disclosed herein allow for the efficient operation of such a tiered service. Interference protection among tiered service devices belonging to one or more tiers of the service, from other devices within the same tier of service, or devices of other tiers of service, is disclosed. Identification of other devices of the same or differing tiers of service, and interference mitigation between other tiered service devices based upon intercommunication between the devices, and/or via a central registry database, are also disclosed.

    Advanced backhaul services
    55.
    发明授权

    公开(公告)号:US10284253B2

    公开(公告)日:2019-05-07

    申请号:US15873251

    申请日:2018-01-17

    Abstract: “Tiered” groups of devices (tiered service radios) and/or licenses associated with the devices or users so as to provide a hieratical set of interference protection mechanisms for members of each tier of service are disclosed. Point-to-point and point-to-multipoint data links for any communication application, including wireless backhaul applications, are also disclosed. Exemplary systems, devices, and methods disclosed herein allow for the efficient operation of such a tiered service. Interference protection among tiered service devices belonging to one or more tiers of the service, from other devices within the same tier of service, or devices of other tiers of service, is disclosed. Identification of other devices of the same or differing tiers of service, and interference mitigation between other tiered service devices based upon intercommunication between the devices, and/or via a central registry database, are also disclosed.

    Multipath interference cancellation through cepstrum analysis
    58.
    发明授权
    Multipath interference cancellation through cepstrum analysis 有权
    通过倒谱分析进行多径干扰消除

    公开(公告)号:US09154237B2

    公开(公告)日:2015-10-06

    申请号:US13796842

    申请日:2013-03-12

    Applicant: Andrew LLC

    CPC classification number: H04B15/00 H03H17/0216 H04B1/711

    Abstract: A method and apparatus of mitigating multipath coupling interference in a wireless repeater system 10 includes measuring an error signal E(z) in a signal path of the repeater which contains the desired communication signals and the multipath coupling interference and determining a cepstrum cee[n] of the error signal E(z), wherein the cepstrum cee[n] is reflective of the open-loop gain G(z) of the system. The method further includes extracting the impulse response of the open-loop gain G(z) from the cepstrum cee[n] of the error signal E(z), calculating a plurality of cancellation filter coefficients using the extracted impulse response, and adaptively applying the plurality of filter coefficients to an adjustable filter to generate the cancellation signal necessary to mitigate the multipath coupling interference.

    Abstract translation: 减轻无线中继器系统10中的多径耦合干扰的方法和装置包括测量包含所需通信信号和多路径耦合干扰的中继器的信号路径中的误差信号E(z),并确定倒谱c [n] 的误差信号E(z),其中倒谱cee [n]反映系统的开环增益G(z)。 该方法还包括从误差信号E(z)的倒谱cee [n]中提取开环增益G(z)的脉冲响应,使用所提取的脉冲响应计算多个消除滤波器系数,并自适应地 多个滤波器系数到可调滤波器以产生减轻多径耦合干扰所必需的消除信号。

    METHOD AND SYSTEM FOR BLIND INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEMS
    59.
    发明申请
    METHOD AND SYSTEM FOR BLIND INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEMS 审中-公开
    无线通信系统中盲干扰消除的方法和系统

    公开(公告)号:US20150280775A1

    公开(公告)日:2015-10-01

    申请号:US14112540

    申请日:2012-11-13

    CPC classification number: H04B1/7103 H04B1/711 H04B1/712

    Abstract: Aspects of the present invention include methods, systems, and computer-readable medium for canceling interference in wireless communication. The method includes receiving wireless CDMA communication signals using one or more antennas at least from a first entity via a first communication channel and a second entity via a second communication channel, determining a set of known characteristics associated with the first entity, the first set of characteristics comprising a first signal strength, a first synchronization information, and an first channel identification information, and determining an aggregate signal matrix based on signals received from at least the first entity and the second entity. The method further includes determining a covariance matrix associated with the aggregate signal value, determining a reference signal matrix based on the set of known characteristics, calculating an interference matrix by subtracting the reference signal matrix from the covariance matrix, and removing the interference estimation from the communication signals.

    Abstract translation: 本发明的方面包括用于消除无线通信中的干扰的方法,系统和计算机可读介质。 该方法包括使用至少来自第一实体的第一实体经由第一通信信道和第二实体经由第二通信信道接收无线CDMA通信信号,确定与第一实体相关联的一组已知特性,第一组 特征包括第一信号强度,第一同步信息和第一信道识别信息,以及基于从至少第一实体和第二实体接收的信号来确定聚合信号矩阵。 该方法还包括确定与聚合信号值相关联的协方差矩阵,基于已知特征集合确定参考信号矩阵,通过从协方差矩阵中减去参考信号矩阵来计算干扰矩阵,以及从所述协方差矩阵中去除干扰估计 通信信号。

    Pre-phase error correction
    60.
    发明授权
    Pre-phase error correction 有权
    预相位误差校正

    公开(公告)号:US09100250B2

    公开(公告)日:2015-08-04

    申请号:US14341181

    申请日:2014-07-25

    Abstract: A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.

    Abstract translation: CDMA通信系统包括信号处理器,其以不同的速率将语音和非发音信号编码成数据,例如, 数据速率为8kbps,16kbps,32kbps或64kbps作为I和Q信号。 信号处理器根据信号的类型或响应于设定的数据速率来选择特定的数据速率。 当信号被接收和解调时,基带信号处于芯片级。 信号的I和Q分量都使用扩展期间使用的pn序列的共轭进行解扩,将信号返回到符号级。 载波偏移校正在符号级进行。 因此,需要较低的总体处理速度。

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