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1. 发明申请

WO2018145564A1 ANTENNA ARRANGEMENTS FOR INTERFERENCE ALIGNMENT IN LINE OF SIGHT WIRELESS COMMUNICATIONS 审中-公开
公开(公告)号：WO2018145564A1
公开(公告)日：2018-08-16
申请号：PCT/CN2018/073079
申请日：2018-01-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： TANG, Taiwen , AHARONY, Ahikam
IPC分类号： H01Q21/00
摘要： An antenna arrangement includes antenna elements that are arranged, at each end of a Line of Sight communication link, into a selected shape. Distances between the antenna elements at each end of the link are determined based on a Line of Sight distance between the ends of the link and interference alignment between the antenna elements at the ends of the link. Different subsets of the antenna elements are coupled to communication modules at each end of the link. Signals are exchanged between the antenna elements at the ends of the link, and the signals are processed for interference alignment. The antenna element subsets may include two or more antenna elements, and may be unique or include common antenna elements that are common to multiple subsets.

2. 发明申请

WO2017020800A1 APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING POLARIZED SIGNALS 审中-公开
标题翻译：发送和接收极化信号的装置和方法
公开(公告)号：WO2017020800A1
公开(公告)日：2017-02-09
申请号：PCT/CN2016/092486
申请日：2016-07-30
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： AHARONY, Ahikam , ZAMANI, Mahdi
IPC分类号： H04B7/10
CPC分类号： H04L1/0033 , H04B7/0469 , H04B7/0632 , H04B7/0641 , H04B7/10 , H04L1/0003 , H04L1/0006
摘要： Provided is an apparatus and method for transmitting and receiving polarized signals. Wireless communication with multiple polarized signals may experience greater attenuation on one polarized signal than another polarized signal. The polarized signal that is more attenuated limits overall throughput for the wireless communication. According to an embodiment of the invention, signals undergo rotation processing with a transformation involving a rotation matrix prior to transmission. Each polarized signal that is transmitted is based on a different weighted combination of the signals. The rotation processing can be performed with an objective that signals recovered at a receiver have comparable signal quality, which can increase overall throughput. In some implementations, the rotation processing is performed based on feedback to dynamically adjust the rotation processing.
摘要翻译：提供了一种用于发送和接收偏振信号的装置和方法。与多个极化信号的无线通信可能在一个偏振信号上比另一个偏振信号具有更大的衰减。更加衰减的极化信号限制了无线通信的总体吞吐量。根据本发明的实施例，信号在传输之前通过涉及旋转矩阵的变换进行旋转处理。传输的每个偏振信号基于信号的不同加权组合。可以以在接收机处恢复的信号具有相当的信号质量的目的来执行旋转处理，这可以提高总吞吐量。在一些实现中，基于反馈来执行旋转处理以动态地调整旋转处理。

3. 发明申请

WO2018076638A1 SOFTWARE DEFINED NETWORK WITH SELECTABLE LOW LATENCY OR HIGH THROUGHPUT MODE 审中-公开
标题翻译：具有可选低延迟或高吞吐量模式的软件定义网络
公开(公告)号：WO2018076638A1
公开(公告)日：2018-05-03
申请号：PCT/CN2017/081883
申请日：2017-04-25
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： AHARONY, Ahikam
IPC分类号： H04L1/00 , H03M13/11
摘要： Encoding and decoding systems are provided for reduced latency at the decoder. In the encode error detection codewords are produced from source bits. The error detection codewords are then encoded with a systematic error correction encoder to produce a set of parity bits. All of the systematic code source bits and at least some of the parity bits are mapped to modulation symbols for transmission. In the decoder, two signal processings are performed in parallel, one based on soft bit decisions and the other based on hard bit decisions. The soft bit decisions are processed using a systematic error correction decoder. The hard bit decisions are processed by re-encoding error detection codewords to produce parity bits. If the produced parity bits match received parity bits, then the hard bit decisions are reliable and are output without waiting for the result of the systematic error correction decoder.
摘要翻译：编码和解码系统被提供用于减少解码器处的等待时间。在编码错误检测码字是从源位产生的。然后用系统纠错编码器对错误检测码字进行编码以产生一组奇偶校验位。所有的系统码源位和至少一些奇偶校验位被映射到调制符号以进行传输。在解码器中，两个信号处理并行执行，一个基于软比特决定，另一个基于硬比特决定。软比特决定使用系统纠错解码器来处理。通过重新编码错误检测码字来处理硬比特决定以产生奇偶比特。如果产生的奇偶校验位匹配接收到的奇偶校验位，则硬位判定是可靠的，并且在不等待系统误差校正解码器的结果的情况下被输出。

4. 发明申请

WO2017219718A1 PHASE NOISE ESTIMATION AND CANCELLATION 审中-公开
标题翻译：相位噪声估计和取消
公开(公告)号：WO2017219718A1
公开(公告)日：2017-12-28
申请号：PCT/CN2017/076953
申请日：2017-03-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： SHAHMOHAMMADIAN, Hoda , AHARONY, Ahikam
IPC分类号： H04L27/00
CPC分类号： H04L27/2688 , H04L1/006 , H04L5/0048 , H04L5/006 , H04L25/0226 , H04L27/34
摘要： Phase noise estimation and cancellation as disclosed herein may allow cost-efficient increase of capacity in communications by enabling very high QAM levels. The proposed solution is potentially applicable to any single carrier applications where phase noise is a limiting factor and a required order of modulation is very high. For example, disclosed embodiments may enable high QAM levels for microwave backhauls despite severe phase noise sensitivity. One embodiment involves a pilot-aided and BCJR-based sequential search algorithm that accurately estimates and subtracts fast-varying phase noise symbol-by-symbol. Residual BER performance is evaluated under the most challenging phase noise scenarios. FPGA emulation results show detection and removal of a significant amount of phase noise and zero BER performance even for complex 1K-QAM and above.
摘要翻译：如本文所公开的相位噪声估计和消除可以通过实现非常高的QAM等级来允许通信中的容量的成本效益提高。所提出的解决方案可能适用于其中相位噪声是限制因素并且调制的所需顺序非常高的任何单载波应用。例如，尽管有严重的相位噪声敏感性，但所公开的实施例可实现用于微波回程的高QAM水平。一个实施例涉及基于导频和基于BCJR的顺序搜索算法，其准确地估计和逐个符号地减去快速变化的相位噪声。在最具挑战性的相位噪声情况下评估残余BER性能。 FPGA仿真结果显示，即使对于复杂的1K-QAM及更高级别，也可检测并消除大量的相位噪声和零BER性能。

5. 发明申请

WO2019141206A1 SYSTEM AND METHOD FOR PHOTONIC DISTRIBUTION OF MICROWAVE FREQUENCY ELECTRICAL SIGNAL FOR DISTRIBUTED MICROWAVE MIMO COMMUNICATIONS 审中-公开
公开(公告)号：WO2019141206A1
公开(公告)日：2019-07-25
申请号：PCT/CN2019/072104
申请日：2019-01-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： AHARONY, Ahikam , KLEIN, Shaul
IPC分类号： H04B10/50
摘要： A microwave transmit system is provided that makes use of optical fiber to convey a microwave frequency source. A local oscillator produces a microwave frequency source in electrical form. A directly modulated laser receives the first microwave frequency source and produces an optical signal. An optical fiber is used to convey the optical signal from the laser to a photodetector. The photodetector receives a first component of the optical signal and converts the first component of the optical signal to a second microwave frequency source in electrical form. A microwave modulator performs microwave modulation using the second microwave frequency source, and a microwave antenna configured to transmit an output of the first microwave modulator. For MIMO operation, there can be a second microwave modulator. The microwave frequency source can also be conveyed to the second microwave modulator using optical fiber, or the source can be proximate to one of the two microwave modulators, and conveyed to the other of the two microwave modulators using optical fiber.

6. 发明申请

WO2017161930A1 ACCURATE CROSS-PHASE ESTIMATION FOR DUAL POLARIZED MICROWAVE TRANSCEIVER 审中-公开
标题翻译：双极化微波收发器的精确交叉相位估计
公开(公告)号：WO2017161930A1
公开(公告)日：2017-09-28
申请号：PCT/CN2016/110796
申请日：2016-12-19
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： SHAHMOHAMMADIAN, Hoda , AHARONY, Ahikam
IPC分类号： H04B1/10
CPC分类号： H04L27/02 , H04L5/0048 , H04L5/04 , H04L25/0224
摘要： Cross-phase interference occurs in dual polarized or orthogonal polarized microwave links when independent local oscillators (LOs) are utilized in each outdoor unit (ODU) transceiver operating on the same frequency channel. If the cross-phase noise is not compensated the performance of the microwave link will be degraded. In order to reduce cross-phase noise two or more pilot symbols are utilized to enable cross-phase noise estimates to be determined at the receiver of the microwave link. The pilot symbols enable a cross-phase noise compensation factor to be determined for the signal from the one or more cross-phase noise estimates. The received signal can then be compensated using the estimated cross-phase noise compensation factor.
摘要翻译：当在同一频率信道上运行的每个室外单元（ODU）收发器中使用独立的本地振荡器（LO）时，在双极化或正交极化微波链路中发生交叉相位干扰。如果交叉相位噪声未被补偿，则微波链路的性能将降低。为了减少交叉相位噪声，使用两个或更多个导频符号来使得能够在微波链路的接收器处确定交叉相位噪声估计。导频码元使得能够为来自一个或多个交叉相位噪声估计的信号确定交叉相位噪声补偿因子。接收到的信号可以使用估计的交叉相位噪声补偿因子进行补偿。

7. 发明申请

WO2017201765A1 METHOD AND APPARATUS FOR BEAM FORMING CALIBRATION IN POINT TO MULTI POINT COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于在多点通信系统中进行波束形成校准的方法和设备
公开(公告)号：WO2017201765A1
公开(公告)日：2017-11-30
申请号：PCT/CN2016/084404
申请日：2016-06-01
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： TANG, Taiwen , AHARONY, Ahikam
IPC分类号： H04B17/11 , H04B17/21
CPC分类号： H04B17/12 , H01Q3/267 , H04B7/0617 , H04B17/14
摘要： Methods and apparatus for calibrating an antenna array are provided. A limited number of antenna elements of the array are operated to broadcast a signal. The signal carries information relevant to operation of a communication network, for receipt by other devices. By using one or a limited number of antenna elements, a radiation pattern covering a wide area is achieved. Concurrently, transmission of the broadcast signal is monitored using another one or more antenna elements of the array, operating in a receive mode. The monitored signal is used in an antenna array calibration operation. The procedure is repeated for various different transmitting and receiving antenna elements, resulting in a sequence of broadcasts using different parts of the array. The calibration results can be used to correct for operating errors such as phase shifter errors. The corrected phase shifters can then be used for beam forming during another phase of communication.
摘要翻译：提供了用于校准天线阵列的方法和装置。该阵列的有限数量的天线元件被操作以广播信号。该信号携带与通信网络的操作相关的信息，以供其他设备接收。通过使用一个或有限数量的天线元件，实现覆盖广域的辐射图。同时，使用阵列中的另一个或多个天线元件来监测广播信号的传输，工作在接收模式下。监测的信号用于天线阵列校准操作。对于各种不同的发射和接收天线元件重复该过程，导致使用阵列的不同部分的广播序列。校准结果可用于纠正操作错误，如移相器错误。然后校正的移相器可以在另一通信阶段用于波束形成。

8. 发明申请

WO2017118272A1 RECEIVER PATH DISTORTION MITIGATION USING ADAPTIVE FILTER FEEDBACK 审中-公开
标题翻译：利用自适应滤波反馈抑制接收机路径畸变
公开(公告)号：WO2017118272A1
公开(公告)日：2017-07-13
申请号：PCT/CN2016/110799
申请日：2016-12-19
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： HOU, Weikun , AHARONY, Ahikam
IPC分类号： H04B1/525
CPC分类号： H04L5/1461 , H04B1/48 , H04B2001/485 , H04L5/0048
摘要： A duplex communication system includes a duplexer for transmitting and receiving signals, a transmitter part connected to the duplexer, and a receiver part connected to the duplexer, the receiver part comprising an amplifier for amplifying a received signal to provide an amplified received signal and a demodulator for downconverting the amplified received signal, and a second-order intermodulation distortion (IMD2) compensation module for compensating for second-order intermodulation distortion. The system also includes an adaptive filtering module that obtains a transmitter reference signal, generates filter coefficients for the IMD2 compensation module and also adjusts a direct current (DC) bias of the demodulator based on the reference signal.
摘要翻译：双工通信系统包括用于发送和接收信号的双工器，连接到双工器的发射器部分，以及连接到双工器的接收器部分，接收器部分包括放大器，用于将接收到的信号放大成提供放大的接收信号和用于下变频放大的接收信号的解调器，以及用于补偿二阶互调失真的二阶互调失真（IMD2）补偿模块。该系统还包括自适应滤波模块，其获得发射机参考信号，为IMD2补偿模块生成滤波器系数，并且还基于参考信号调整解调器的直流（DC）偏置。

9. 发明申请

WO2017036364A1 APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING WIRELESS SIGNALS SUBJECT TO SPECTRAL MASK 审中-公开
标题翻译：用于发送和接收无线信号的设备和方法
公开(公告)号：WO2017036364A1
公开(公告)日：2017-03-09
申请号：PCT/CN2016/096954
申请日：2016-08-26
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZAMANI, Mahdi , AHARONY, Ahikam , ZHANG, Zhuhong , LI, Chuandong , HOU, Weikun
IPC分类号： H04B1/02 , H04B17/00
CPC分类号： H04B1/40 , H04L27/0014 , H04L27/32
摘要： Provided is an apparatus and method for transmitting and receiving wireless signals. A transmitting apparatus has a signal processor and a transmitter. The signal processor is configured to generate a signal having a middle channel and at least one side channel. The transmitter is configured to wirelessly transmit the signal subject to a spectral mask that has shoulder regions. According to an embodiment of the invention, the signal processor generates the signal such that each side channel is positioned in one of the shoulder regions of the spectral mask. In this manner, bandwidth from the shoulder regions can be utilized by one or more side channels. Also provided is a receiving apparatus having a receiver configured to wirelessly receive the signal, and a signal processor configured to process the signal.
摘要翻译：提供了一种用于发送和接收无线信号的装置和方法。发送装置具有信号处理器和发送器。信号处理器被配置为产生具有中间信道和至少一个侧信道的信号。发射器被配置为无线地传送受到具有肩部区域的光谱掩模的信号。根据本发明的实施例，信号处理器产生信号，使得每个侧面通道位于光谱掩模的一个肩部区域中。以这种方式，来自肩部区域的带宽可被一个或多个侧面通道利用。还提供了具有被配置为无线地接收信号的接收机的接收设备，以及被配置为处理该信号的信号处理器。

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