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公开(公告)号：US10230423B2
公开(公告)日：2019-03-12
申请号：US14936928
申请日：2015-11-10
发明人： Tho Le-Ngoc , Thanh Ngon Tran
摘要： System and method embodiments are provided for implementing balanced passive cancellation of self-interference (SI) for full-duplex (FD) communications. In an embodiment, a transceiver circuit for FD communications comprises an antenna comprising a first port and a second port, a transmitter, and a power divider coupled to the transmitter and comprising a first output and a second output. The transceiver circuit further comprises a receiver, a power combiner coupled to the receiver and comprising a first input and a second input, and a first circulator coupled to the first output of the power divider, the first port of the antenna, and the first input of the power combiner. The transceiver circuit also comprises a second circulator coupled to the second output of the power divider, the second port of the antenna, and the second input of the power combiner.
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公开(公告)号：US09979063B2
公开(公告)日：2018-05-22
申请号：US15043150
申请日：2016-02-12
发明人： Raafat Mansour
CPC分类号： H01P1/202 , H01P1/2002 , H01P1/205 , H01P1/2053 , H01P1/207 , H01P7/04 , H01P7/06 , H01P7/10
摘要： A rod-switched tunable resonator includes a housing defining a cavity, a first rod disposed within the cavity, a second rod disposed within the cavity, and a switch connected to the first rod and to the second rod to tune the resonator to one of a plurality of frequencies by connecting or disconnecting one or both of the first and second rods to the housing. A tunable filter may be fabricated using two or more such resonators. The rod-switched tunable resonator may be a combline resonator, coaxial resonator, waveguide resonator, or dielectric resonator.
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公开(公告)号：US09817185B2
公开(公告)日：2017-11-14
申请号：US15002615
申请日：2016-01-21
CPC分类号： G02B6/122 , G02B6/1228 , G02B2006/12038 , G02B2006/12061
摘要： A silicon photonic platform includes a substrate supporting a buried oxide layer, an active silicon layer deposited on the buried oxide layer, a first silicon nitride layer separated from the active silicon layer by a first spacer, the first silicon nitride layer and the active silicon layer constituting a first light-transferring interlayer transition and a second silicon nitride layer covered by a cladding and separated from the first silicon layer by a second spacer, the second silicon nitride layer and the first silicon nitride layer constituting a second light-transferring interlayer transition. The second silicon nitride layer passes over one or more waveguides in the active silicon layer to thereby define a waveguide crossing. The silicon nitride layers may be substituted with an equivalent dielectric with a similar refractive index and high optical transparency in the desired operating wavelength range.
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公开(公告)号：US20170276969A1
公开(公告)日：2017-09-28
申请号：US15080065
申请日：2016-03-24
CPC分类号： G02F1/0121 , G02F1/0147 , G02F1/025 , G02F2001/0157
摘要： A hybrid electronic optical chip has a first photonic element with which a first diode is associated, a second photonic element with which a second diode is associated and a common electrical driver connected to the first and second diodes by a common electrical connection with opposite polarity. The electrical driver generates a common electrical drive signal divided in time into first and second drive signal components for independently driving the first and second photonic elements through the common electrical connection.
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公开(公告)号：US20170162925A1
公开(公告)日：2017-06-08
申请号：US14962855
申请日：2015-12-08
发明人： Raafat R. Mansour , Kevin Yang , Vahid Miraftab
摘要： The tunable bandpass filter is used for filtering an electromagnetic signal, has a system passband between a first and a second tunable cutoff frequencies, and has a first subfilter and a second subfilter connected to one another in series between an input port and an output port and being complementary to one another in the tunable bandpass filter. At least one of the first subfilter and the second subfilter being connected to operate in reflection.
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公开(公告)号：US20170134067A1
公开(公告)日：2017-05-11
申请号：US14936928
申请日：2015-11-10
发明人： Tho Le-Ngoc , Thanh Ngon Tran
CPC分类号： H04B1/56 , H04B1/525 , H04L5/14 , H04L5/1461
摘要： System and method embodiments are provided for implementing balanced passive cancellation of self-interference (SI) for full-duplex (FD) communications. In an embodiment, a transceiver circuit for FD communications comprises an antenna comprising a first port and a second port, a transmitter, and a power divider coupled to the transmitter and comprising a first output and a second output. The transceiver circuit further comprises a receiver, a power combiner coupled to the receiver and comprising a first input and a second input, and a first circulator coupled to the first output of the power divider, the first port of the antenna, and the first input of the power combiner. The transceiver circuit also comprises a second circulator coupled to the second output of the power divider, the second port of the antenna, and the second input of the power combiner.
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97.发明授权System and method for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) offset quadrature amplitude modulation (OQAM) 有权用于多输入多输出（MIMO）正交频分复用（OFDM）偏移正交幅度调制（OQAM）的系统和方法公开(公告)号：US09544032B2
公开(公告)日：2017-01-10
申请号：US14549205
申请日：2014-11-20
CPC分类号： H04B7/0456 , H04B1/12 , H04L27/2626 , H04L27/2647 , H04L27/2698
摘要： In one embodiment, a method for transmitting data in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM)-offset quadrature amplitude modulation (OQAM) system includes selecting a precoding matrix in accordance with a projection of the precoding matrix on a precoding space and generating a precoded modulated pulse shape by applying the precoding matrix to a data vector and a pulse shape. The method also includes transmitting, by a first device to a second device, the precoded modulated pulse shape.
摘要翻译： 在一个实施例中，一种用于在多输入多输出（MIMO）正交频分复用（OFDM） - 偏移正交幅度调制（OQAM）系统中传输数据的方法包括：根据预编码矩阵的投影选择预编码矩阵 在预编码空间上并通过将预编码矩阵应用于数据矢量和脉冲形状来产生预编码的调制脉冲形状。 该方法还包括由第一设备向第二设备发送预编码的调制脉冲形状。
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98.发明申请公开(公告)号：US20160323023A1
公开(公告)日：2016-11-03
申请号：US15207250
申请日：2016-07-11
发明人： Tho Le-Ngoc , Sean Huberman
CPC分类号： H04B7/0456 , H04B1/0475 , H04B1/525 , H04B7/0417 , H04B7/0617 , H04B15/00 , H04L5/14
摘要： Embodiments are provided to enable effective cancellation or reduction of the self-interference (SI) introduced when applying full-duplex (FD) transmission to Multiple-Input-Multiple-Output (MIMO) systems. A method embodiment includes forming, using a precoding matrix generated in accordance with channel conditions, a plurality of beams for a plurality of transmit signals and a plurality of self-interference cancellation signals corresponding to the plurality of transmit signals. The method further includes transmitting, at a plurality of antennas, the plurality of beams for the transmit signals, and receiving, via the plurality of antennas, a plurality of receive signals. A corresponding self-interference cancellation signal is then added to each of the plurality of receive signals to obtain a plurality of corrected receive signals, and the plurality of corrected receive signals are detected at a plurality of receivers.
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公开(公告)号：US20150326284A1
公开(公告)日：2015-11-12
申请号：US14706591
申请日：2015-05-07
发明人： Ramy Gohary , Halim Yanikomeroglu
CPC分类号： H04B7/0417 , H03F1/3247 , H04B3/32 , H04B7/04 , H04B7/0456 , H04B7/06 , H04B7/0632 , H04L1/00 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L5/0007 , H04L25/03343 , H04L27/2647 , H04L27/368
摘要： An embodiment communication system and method for using multiple-input multiple-output use. Kronecker model to determine a symbol coding formulation that achieves ergodic capacity for high signal-to-noise ratios (SNRs). The lower bound on this capacity is achieved by input signals in the form of the product of an isotropically distributed random Grassmannian component and a deterministic component comprising the eigenvectors and the inverse of the eigenvalues of the transmitter covariance matrix.
摘要翻译： 一种用于使用多输入多输出使用的实施例通信系统和方法。 Kronecker模型来确定实现高信噪比（SNR）的遍历容量的符号编码公式。 该容量的下限是通过各向同性分布的随机Grassmannian分量和包括特征向量和发射机协方差矩阵的特征值的逆的确定性分量的形式的输入信号来实现的。
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公开(公告)号：US20150264132A1
公开(公告)日：2015-09-17
申请号：US14644959
申请日：2015-03-11
CPC分类号： H04L51/38 , H04W72/0486 , H04W74/0833 , H04W76/10
摘要： A method for operating a user device adapted to transmit data in a communications system in which available resources are divided into contention resources and non-contention resources includes selecting a first non-contention resource from the non-contention resources in accordance with selection information, the user device configured to transmit data on the first non-contention resource, determining a contention resource from a first plurality of contention resources associated with the first non-contention resource, in accordance with an association between the first plurality of contention resources and the first non-contention resource is known by the user device and a network node in the communications system, and transmitting a message on the contention resource, wherein the message initiates a random access procedure to obtain access to the selected first non-contention resource.
摘要翻译： 一种用于操作适于在可用资源被划分为竞争资源和非争用资源的通信系统中发送数据的用户设备的方法包括根据选择信息从非争用资源中选择第一非争用资源， 用户设备，被配置为在所述第一非争用资源上发送数据，根据所述第一多个争用资源与所述第一非争用资源之间的关联，从与所述第一非争用资源相关联的第一多个争用资源中确定争用资源， 所述用户设备和所述通信系统中的网络节点已知所述连接资源，并且在所述争用资源上发送消息，其中所述消息发起随机接入过程以获得对所选择的所述第一非争用资源的访问。
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