公开(公告)号：US20130286997A1

公开(公告)日：2013-10-31

申请号：US13995175

申请日：2011-12-13

Applicant: Alexei Davydov ,  Alexander Maltsev ,  Yuan Zhu ,  Kamran Etemad ,  Yujian Zhang ,  Gregory V. Morozov ,  Vadim Sergeyev

Inventor： Alexei Davydov ,  Alexander Maltsev ,  Yuan Zhu ,  Kamran Etemad ,  Yujian Zhang ,  Gregory V. Morozov ,  Vadim Sergeyev

IPC: H04W72/04

CPC classification number: H04L27/26 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0619 ,  H04L1/06 ,  H04W24/02 ,  H04W56/0045 ,  H04W56/0085 ,  H04W72/042

Abstract: Briefly, in accordance with one or more embodiments, a conventional physical downlink control channel (PDCCH) is transmitted in a first region of a physical downlink control channel structure utilized by a remote radio head that has been assigned a cell identifier that is common to one or more other remote radio heads within the cell, and an enhanced physical downlink control channel (ePDCCH) is transmitted in a second region of the physical downlink control channel structure.

Abstract translation: 简而言之，根据一个或多个实施例，常规物理下行链路控制信道（PDCCH）在被分配了一个小区标识符的远程无线电头所使用的物理下行链路控制信道结构的第一区域中被传输 或更多的其他远程无线电头，并且在物理下行链路控制信道结构的第二区域中发送增强的物理下行链路控制信道（ePDCCH）。

公开(公告)号：US20130243118A1

公开(公告)日：2013-09-19

申请号：US13895555

申请日：2013-05-16

Applicant: Qinghua Li ,  Huaning Niu ,  Yuan Zhu ,  Xintian E. Lin ,  Xiaogang Chen ,  Alexei Davydov ,  Thomas J. Kenney ,  Eldad Perahia

Inventor： Qinghua Li ,  Huaning Niu ,  Yuan Zhu ,  Xintian E. Lin ,  Xiaogang Chen ,  Alexei Davydov ,  Thomas J. Kenney ,  Eldad Perahia

IPC: H04L25/08

CPC classification number: H04B7/0617 ,  H04B7/0413 ,  H04L1/0606 ,  H04L25/08 ,  H04L27/2626 ,  H04L27/2634 ,  H04L27/3444 ,  H04W52/10 ,  H04W52/146 ,  H04W52/36 ,  H04W72/082

Abstract: Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of preceded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol. The mobile device also comprises transmitter circuitry to generate time-domain signals from the blocks of precoded complex-valued output symbols for each of the spatial dimensions for transmission using the two or more antennas. The precoded complex-valued output symbols are mapped to different signal dimensions comprising at least different frequency dimensions prior to transmission.

Abstract translation: 移动设备发射机的实施例和用于在不同信号尺寸上传输信号的方法一般在此公开。 移动设备发射机包括映射器，以将两个或更多个输入调制符号的块映射到包括两个或更多个空间维度的不同信号维度，以及线性变换电路，用于对映射的输入调制符号块执行线性变换以产生块 之前的复值输出符号，使得每个输出符号携带多于一个输入调制符号的一些信息。 移动设备还包括发射机电路，用于根据用于使用两个或更多个天线进行传输的每个空间维度，从预编码的复值输出符号块生成时域信号。 预编码的复值输出符号被映射到在传输之前至少包括不同频率尺寸的不同信号尺寸。

公开(公告)号：US08498252B2

公开(公告)日：2013-07-30

申请号：US12646226

申请日：2009-12-23

Applicant: Alexei Davydov ,  Huaning Niu ,  Jiacheng Wang ,  Yuan Zhu ,  Gregory V. Morozov

Inventor： Alexei Davydov ,  Huaning Niu ,  Jiacheng Wang ,  Yuan Zhu ,  Gregory V. Morozov

IPC: H04W4/00 ,  H04W74/00 ,  H04K1/10

CPC classification number: H04L12/66 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0226 ,  H04L27/2614 ,  H04W52/10 ,  H04W52/146

Abstract: Briefly, in accordance with one or more embodiments, a midamble for a downlink subframe is generated by rotating an order of midamble tones per antenna between two or more subbands. A Golay sequence may be utilized in the modulation of one or more subcarriers of the midamble via a reuse-3 arrangement. Alternatively, a reuse-1 arrangement may be applied to the midamble.

Abstract translation: 简而言之，根据一个或多个实施例，通过在两个或多个子带之间旋转每个天线的中间码音调的顺序来产生用于下行链路子帧的中间码。 Gleay序列可以用于经由重用3布置来调制中置码的一个或多个子载波。 或者，可以将重用1布置应用于中间码。

公开(公告)号：US20110002280A1

公开(公告)日：2011-01-06

申请号：US12646226

申请日：2009-12-23

Applicant: Alexei Davydov ,  Huaning Niu ,  Jiacheng Wang ,  Yuan Zhu ,  Gregory V. Morozov

Inventor： Alexei Davydov ,  Huaning Niu ,  Jiacheng Wang ,  Yuan Zhu ,  Gregory V. Morozov

IPC: H04W4/00

CPC classification number: H04L12/66 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0226 ,  H04L27/2614 ,  H04W52/10 ,  H04W52/146

Abstract: Briefly, in accordance with one or more embodiments, a midamble for a downlink subframe is generated by rotating an order of midamble tones per antenna between two or more subbands. A Golay sequence may be utilized in the modulation of one or more subcarriers of the midamble via a reuse-3 arrangement. Alternatively, a reuse-1 arrangement may be applied to the midamble.

Abstract translation: 简而言之，根据一个或多个实施例，通过在两个或多个子带之间旋转每个天线的中间码音调的顺序来产生用于下行链路子帧的中间码。 Gleay序列可以用于经由重用3布置来调制中置码的一个或多个子载波。 或者，可以将重用1布置应用于中间码。

公开(公告)号：US20100091894A1

公开(公告)日：2010-04-15

申请号：US12442941

申请日：2006-09-29

Applicant: Alexander Maltsev ,  Alexey Rubstov ,  Alexei Davydov ,  Sergey Tiraspolsky ,  Audrey Pudeyev

Inventor： Alexander Maltsev ,  Alexey Rubstov ,  Alexei Davydov ,  Sergey Tiraspolsky ,  Audrey Pudeyev

IPC: H04L27/28

CPC classification number: H04L27/2608 ,  H04L1/20 ,  H04L27/0008

Abstract: A method and apparatus for determining a channel quality indicator (CQI) to be used in link adaptation for Orthogonal Frequency Division Multiplexing (OFDM) communications. In one embodiment of the invention, the CQI is based on a set of capacity values for subcarrier components in a received OFDM signal. In another embodiment, a minimum value from a running average of the set of capacity values is used to determine the CQI.

Abstract translation: 一种用于确定在正交频分复用（OFDM）通信的链路适配中使用的信道质量指示符（CQI）的方法和装置。 在本发明的一个实施例中，CQI基于接收的OFDM信号中的子载波分量的一组容量值。 在另一个实施例中，使用来自该组容量值的运行平均值的最小值来确定CQI。

公开(公告)号：US20060156087A1

公开(公告)日：2006-07-13

申请号：US11034204

申请日：2005-01-12

Applicant: Xintian Lin ,  Qinghua Li ,  Alexei Davydov ,  Alexander Maltsev ,  Sumeet Sandhu ,  Ada Shuk Yan Poon

Inventor： Xintian Lin ,  Qinghua Li ,  Alexei Davydov ,  Alexander Maltsev ,  Sumeet Sandhu ,  Ada Shuk Yan Poon

IPC: G01R31/28

CPC classification number: H04L27/2608

Abstract: In a multicarrier transmitter that transmits two or more spatial data streams, a bit distributor assigns encoded bits to the spatial data streams based on bit-loading capabilities of the streams and in a manner to intermix the bits among the spatial streams.

Abstract translation: 在发送两个或多个空间数据流的多载波发射机中，位分配器基于流的比特加载能力并且以混合空间流之间的比特的方式将编码比特分配给空间数据流。

公开(公告)号：US20060114816A1

公开(公告)日：2006-06-01

申请号：US10999592

申请日：2004-11-30

Applicant: Alexander Maltsev ,  Andrey Pudeyev ,  Ali Sadri ,  Sumeet Sandhu ,  Sergey Tiraspolsky ,  Alexei Davydov

Inventor： Alexander Maltsev ,  Andrey Pudeyev ,  Ali Sadri ,  Sumeet Sandhu ,  Sergey Tiraspolsky ,  Alexei Davydov

IPC: H04J11/00 ,  H04Q7/00 ,  H04J1/00

CPC classification number: H04L1/0026 ,  H04B7/0417 ,  H04B7/0613 ,  H04B7/0626 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/03343 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: In a multiple-input multiple-output (MIMO) multicarrier communication system, a mobile station sends a quantized time-domain representation of the channel transfer function to a base station for use by the base station in generating beamforming coefficients for use in subsequent transmissions to the mobile station. In some embodiments, the quantized time-domain representation of the channel transfer function may be generated from selected most significant rays of an initial estimated sampled channel impulse response. Other embodiments may be described and claimed.

Abstract translation: 在多输入多输出（MIMO）多载波通信系统中，移动台向基站发送信道传递函数的量化时域表示，供基站用于生成波束形成系数以用于后续传输中 移动台。 在一些实施例中，信道传递函数的量化时域表示可以从初始估计采样信道脉冲响应的选定的最高有效射线产生。 可以描述和要求保护其他实施例。

公开(公告)号：US20050287978A1

公开(公告)日：2005-12-29

申请号：US10877943

申请日：2004-06-25

Applicant: Alexander Maltsev ,  Ali Sadri ,  Sergey Tiraspolsky ,  Alexander Flaksman ,  Alexei Davydov

Inventor： Alexander Maltsev ,  Ali Sadri ,  Sergey Tiraspolsky ,  Alexander Flaksman ,  Alexei Davydov

IPC: H04J99/00 ,  H04B7/06 ,  H04B7/08 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04M11/00

CPC classification number: H04B7/066 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0641 ,  H04B7/0842 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03783

Abstract: A multicarrier receiver generates a quantized transmit beamformer matrix ({tilde over (V)}) for each subcarrier of a multicarrier communication channel for use by a multicarrier transmitting station. The multicarrier receiver applies a corrected receiver beamformer matrix (ŨH) to received subcarriers signals generated by signals received from the transmitting station.

Abstract translation: 多载波接收机为由多载波发射台使用的多载波通信信道的每个子载波生成量化的发射波束形成矩阵（V）。 多载波接收机对由从发射站接收的信号产生的接收到的子载波信号应用经校正的接收机波束形成矩阵（U H SUP）。

公开(公告)号：US20050152465A1

公开(公告)日：2005-07-14

申请号：US10815035

申请日：2004-03-30

Applicant: Alexander Maltsev ,  Ali Sadri ,  Alexey Rubtsov ,  Alexei Davydov

Inventor： Alexander Maltsev ,  Ali Sadri ,  Alexey Rubtsov ,  Alexei Davydov

IPC: H04L1/00 ,  H04L27/26 ,  H04K1/10

CPC classification number: H04L5/0046 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/203 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  Y02D50/10

Abstract: A data rate is selected for subcarriers of each frequency and spatial channel of a slowly varying frequency selective multicarrier channel to provide uniform bit loading (UBL) for faster link adaptation. Signal to noise ratios (SNRs) for subcarriers of the multicarrier communication channel may be calculated from channel state information and a transmit power level. A throughput may be estimated for the data rates from the SNRs and one of the data rates may be selected based on the estimated throughputs.

Abstract translation: 为慢速变化的频率选择多载波信道的每个频率和空间信道的子载波选择数据速率，以提供用于更快链路适配的均匀比特加载（UBL）。 可以从信道状态信息和发射功率电平计算多载波通信信道的子载波的信噪比（SNR）。 可以根据SNR估计数据速率的吞吐量，并且可以基于估计的吞吐量来选择一个数据速率。

公开(公告)号：US20220029870A1

公开(公告)日：2022-01-27

申请号：US17499094

申请日：2021-10-12

Applicant: Peng Lu ,  Alexei Davydov ,  Jong-Kae Fwu ,  Sungho Moon ,  Xiangyang Zhuang

Inventor： Peng Lu ,  Alexei Davydov ,  Jong-Kae Fwu ,  Sungho Moon ,  Xiangyang Zhuang

IPC: H04L27/26 ,  H04L5/00 ,  H04J13/00

Abstract: An apparatus and system to compensate for phase noise in a 5G or 6G DFT-S-OFDM signal are described. An access port (AP)-specific orthogonal cover code (OCC) is applied to phase tracking reference signal (PTRS) symbols in each of a plurality of PTRS groups. The PTRS group are inserted between data symbols to form a data vector prior to perform transform precoding, on the data vector and transmission to a UE. The UE extracts the PTRS symbols from different PTRS APs using the OCC specific to each AP. After extraction, the phase noise for each PTRS group is estimated and used to compensate the data symbols associated with the PTRS group.