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公开(公告)号：US20150295626A1
公开(公告)日：2015-10-15
申请号：US14685077
申请日：2015-04-13
发明人： Renjian Zhao , Zhengxiang Ma , Leonard Piazzi , Jian Wang
CPC分类号： H04B7/0417 , H04B7/063 , H04B7/0639 , H04J11/0053 , H04J11/0056 , H04L5/0023
摘要： An apparatus in a user equipment node (UE) is configured to perform a method for channel feedback. The method includes determining, based on a common reference signal received from a base station and one or more channel conditions, a plurality of values for a receiver table. The method also includes determining a plurality of values for a decision table based on corresponding values in the receiver table and a predetermined interference table. The method further includes selecting a value from the decision table. In addition, the method includes transmitting, to the base station, at least one of a rank indicator (RI) value and a precoding matrix indicator (PMI) value associated with the selected value in the decision table.
摘要翻译： 用户设备节点（UE）中的装置被配置为执行用于信道反馈的方法。 该方法包括基于从基站接收的公共参考信号和一个或多个信道条件确定接收机表的多个值。 该方法还包括基于接收机表中的相应值和预定干扰表来确定用于决策表的多个值。 该方法还包括从决策表中选择一个值。 此外，该方法包括向基站发送与决策表中的所选值相关联的秩指示符（RI）值和预编码矩阵指示符（PMI）值中的至少一个。
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2.发明申请METHODS AND SYSTEMS FOR CREST FACTOR REDUCTION IN MULTI-CARRIER MULTI-CHANNEL ARCHITECTURES 有权多载波多通道结构中降低因子的方法和系统公开(公告)号：US20140269984A1
公开(公告)日：2014-09-18
申请号：US13802028
申请日：2013-03-13
发明人： Leonard Piazzi , Zhengxiang Ma , Jian Wang
IPC分类号： H04L1/00
CPC分类号： H04L1/0033 , H04B7/0617 , H04L27/2623
摘要： Crest factor reduction (CFR) can be performed on the various carriers of a multi-carrier multi-channel signal prior to modulation and/or beamforming operations in order to improve signal-to-noise ratios (SNRs) in the resulting wireless communication. More specifically, clipping noise is introduced into each of the individual carrier signals prior to application of the beamforming weight vectors, as well as prior to carrier modulation, thereby causing the beamforming weight vectors to be applied to both the signal and the clipping noise. As a result, variations between the signal antenna pattern and the clipping noise antenna pattern are reduced, which mitigates and/or reduces low SNR spatial locations in which the signal would have been drowned out by the clipping noise under conventional CFR.
摘要翻译： 在调制和/或波束形成操作之前，可以在多载波多信道信号的各种载波上执行波峰因数降低（CFR），以便提高所得无线通信中的信噪比（SNR）。 更具体地，在施加波束成形加权矢量之前以及在载波调制之前，将削波噪声引入到每个单独的载波信号中，从而使波束成形加权向量被应用于信号和限幅噪声。 结果，减小了信号天线方向图和削波噪声天线方向图之间的变化，这减小了和/或降低了在常规CFR下信号将被削波噪声淹没的低SNR空间位置。
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公开(公告)号：US11757204B2
公开(公告)日：2023-09-12
申请号：US17677261
申请日：2022-02-22
发明人： Markus Novak , Ahmed Hassan Abdelaziz Abdelrahman , Zhengxiang Ma , Munawar Kermalli , Leonard Piazzi
CPC分类号： H01Q21/0043 , H01Q1/424 , H01Q5/25 , H01Q5/314
摘要： A modular wideband antenna includes a ground plane, first and second antenna elements disposed on a first surface of a substrate, a first portion of a two-layer feed balun disposed on the first surface of the substrate, and electrically coupled to the first and second antenna elements, and to the ground plane, a second portion of the two-layer feed balun disposed on a second surface of the substrate, the second portion of the two-layer feed balun being electrically coupled to a signal feed, and being capacitively coupled to the first portion of the two-layer feed balun, first and second coupling capacitances disposed on the second surface of the substrate, the first coupling capacitance being capacitively coupled to the first antenna element, and the second coupling capacitance being capacitively coupled to the second antenna element, and first and second grounding posts being electrically coupled to the first and second coupling capacitances.
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公开(公告)号：US09906346B2
公开(公告)日：2018-02-27
申请号：US14946624
申请日：2015-11-19
发明人： Renjian Zhao , Zhengxiang Ma , Leonard Piazzi , Jian Wang , Weimin Xiao
IPC分类号： H04L5/00 , H04B7/0413 , H04B7/06 , H04W24/10
CPC分类号： H04L5/0053 , H04B7/0413 , H04B7/0626 , H04B7/063 , H04L5/0023 , H04L5/0048 , H04W24/10
摘要： A method for providing feedback information includes receiving a configuration of a plurality of offset values, determining the feedback information in accordance with at least one measurement made by a user equipment and with the plurality of offset values, and sending the feedback information to a network controller.
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公开(公告)号：US09843108B2
公开(公告)日：2017-12-12
申请号：US14603034
申请日：2015-01-22
发明人： Tho Le , Alexis Pierides , Leonard Piazzi , Zhengxiang Ma
CPC分类号： H01Q21/24 , H01Q1/246 , H01Q1/38 , H01Q21/0006 , H01Q21/0087 , H01Q21/062 , H01Q21/26
摘要： Disclosed herein is a dual-feed dual-polarized antenna element and a method for manufacturing the same. An embodiment dual-polarization antenna element includes four radiating elements and eight feed ports. The four radiating elements are arranged in a co-planar diamond pattern. The neighboring elements of the four radiating elements form four shared-element dipole antenna elements. Each of the four radiating elements is shared between two cross-polarized dipole antenna elements of the four shared-element dipole antenna elements. The eight feed ports are arranged in four cross-polarized dual-feed pairs respectively disposed on the four radiating elements. Each feed port of the four cross-polarized dual-feed pairs is operable to respectively excite one of the four radiating elements for a cross-polarized one of the four shared-element dipole antenna elements.
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公开(公告)号：US09800303B2
公开(公告)日：2017-10-24
申请号：US14685077
申请日：2015-04-13
发明人： Renjian Zhao , Zhengxiang Ma , Leonard Piazzi , Jian Wang
IPC分类号： H04L1/00 , H04B7/0417 , H04J11/00 , H04B7/06 , H04L5/00
CPC分类号： H04B7/0417 , H04B7/063 , H04B7/0639 , H04J11/0053 , H04J11/0056 , H04L5/0023
摘要： An apparatus in a user equipment node (UE) is configured to perform a method for channel feedback. The method includes determining, based on a common reference signal received from a base station and one or more channel conditions, a plurality of values for a receiver table. The method also includes determining a plurality of values for a decision table based on corresponding values in the receiver table and a predetermined interference table. The method further includes selecting a value from the decision table. In addition, the method includes transmitting, to the base station, at least one of a rank indicator (RI) value and a precoding matrix indicator (PMI) value associated with the selected value in the decision table.
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公开(公告)号：US10187130B2
公开(公告)日：2019-01-22
申请号：US14624430
申请日：2015-02-17
IPC分类号： H04B7/0456 , H04B7/0452 , H01Q1/24 , H01Q3/26 , H01Q25/00 , H04B7/10 , H01Q21/24 , H01Q3/04 , H04W88/08
摘要： Using High-beam and low-beam transmission signals that have different antenna tilts, different beam-widths, and different polarizations than one another may provide performance advantages in wireless networks. The high-beam transmission signal and the low-beam transmission signal may have orthogonal polarizations. For example, the high-beam transmission signal and the low-beam transmission signal may be linearly polarized signals having different electromagnetic field (E-field) polarization angles with respect to the y-axis, e.g., +/− forty-five degrees with respect to a vertically polarized wave. As another example, the high-beam transmission signal may be a vertically polarized signal, and the low-beam transmission signal may be a horizontally polarized signal, or vice-versa. In addition to having orthogonal polarizations, the low-beam transmission signal may have a greater antenna beam down-tilt angle, and a wider beam-width than the high-beam transmission signal.
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公开(公告)号：US20170111093A1
公开(公告)日：2017-04-20
申请号：US15389754
申请日：2016-12-23
发明人： Zhengxiang Ma , Leonard Piazzi , Renjian Zhao , Jian Wang
CPC分类号： H04B7/0469 , H01Q1/246 , H01Q25/001 , H03F1/02 , H03F3/24 , H04B1/04 , H04B7/0456 , H04B7/0617 , H04B7/10 , H04B2001/045 , H04L5/14
摘要： Embodiments are provided for cross-polarized antennas design with different down tilt angles that support versatile functionality, such as for MIMO or beamforming. An embodiment antenna circuit comprises a baseband signal processor, a pair of RF transmitters coupled to the baseband signal processor, a pair of PAs coupled to the RF transmitters, a 90°/180° hybrid coupler coupled to the RF transmitters, a pair of duplexers and two antennas coupled to the PAs. The two antennas are down tilted at different down tilt angles. A pair of signals is generated using the baseband signal processor, transmitted by the RF transmitters, and amplified using the PAs. Additionally, a 90° or 180° phase difference is introduced into the signals using the 90°/180° hybrid coupler. After the amplifying and introducing the phase difference, the signals are polarized at two different polarizations and down tilted at different down tilt angles using the two antennas.
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公开(公告)号：US20160241317A1
公开(公告)日：2016-08-18
申请号：US14624430
申请日：2015-02-17
CPC分类号： H04B7/0456 , H01Q1/246 , H01Q3/04 , H01Q3/26 , H01Q21/24 , H01Q25/001 , H04B7/0452 , H04B7/0469 , H04B7/0617 , H04B7/10 , H04W88/08
摘要： Using High-beam and low-beam transmission signals that have different antenna tilts, different beam-widths, and different polarizations than one another may provide performance advantages in wireless networks. The high-beam transmission signal and the low-beam transmission signal may have orthogonal polarizations. For example, the high-beam transmission signal and the low-beam transmission signal may be linearly polarized signals having different electromagnetic field (E-field) polarization angles with respect to the y-axis, e.g., +/− forty-five degrees with respect to a vertically polarized wave. As another example, the high-beam transmission signal may be a vertically polarized signal, and the low-beam transmission signal may be a horizontally polarized signal, or vice-versa. In addition to having orthogonal polarizations, the low-beam transmission signal may have a greater antenna beam down-tilt angle, and a wider beam-width than the high-beam transmission signal.
摘要翻译： 使用具有不同天线倾斜，不同波束宽度和彼此不同极化的远光束和近光束传输信号可以在无线网络中提供性能优势。 远光传输信号和近光束传输信号可以具有正交偏振。 例如，远光传输信号和近光束传输信号可以是具有相对于y轴具有不同电磁场（E场）偏振角的线性偏振信号，例如+/- 40度， 相对于垂直极化波。 作为另一示例，远光发射信号可以是垂直极化信号，而远光传输信号可以是水平偏振信号，反之亦然。 除了具有正交偏振之外，低光束传输信号可以具有比远光传输信号更大的天线波束下倾角和更宽的波束宽度。
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10.发明申请公开(公告)号：US20160028166A1
公开(公告)日：2016-01-28
申请号：US14603034
申请日：2015-01-22
发明人： Tho Le , Alexis Pierides , Leonard Piazzi , Zhengxiang Ma
CPC分类号： H01Q21/24 , H01Q1/246 , H01Q1/38 , H01Q21/0006 , H01Q21/0087 , H01Q21/062 , H01Q21/26
摘要： Disclosed herein is a dual-feed dual-polarized antenna element and a method for manufacturing the same. An embodiment dual-polarization antenna element includes four radiating elements and eight feed ports. The four radiating elements are arranged in a co-planar diamond pattern. The neighboring elements of the four radiating elements form four shared-element dipole antenna elements. Each of the four radiating elements is shared between two cross-polarized dipole antenna elements of the four shared-element dipole antenna elements. The eight feed ports are arranged in four cross-polarized dual-feed pairs respectively disposed on the four radiating elements. Each feed port of the four cross-polarized dual-feed pairs is operable to respectively excite one of the four radiating elements for a cross-polarized one of the four shared-element dipole antenna elements.
摘要翻译： 这里公开了双馈双极化天线元件及其制造方法。 实施例的双极化天线元件包括四个辐射元件和八个馈送端口。 四个辐射元件以共面金刚石图案布置。 四个辐射元件的相邻元件形成四个共享元件偶极子天线元件。 四个辐射元件中的每一个在四个共享元件偶极天线元件的两个交叉极化偶极子天线元件之间共享。 八个馈送端口被布置在分别设置在四个辐射元件上的四个交叉偏振双馈对中。 四个交叉偏振双馈对象的每个馈送端口可操作以分别激励四个共享元件偶极天线元件中的交叉极化的四个辐射元件中的一个。
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