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.

公开(公告)号：US20210014848A1

公开(公告)日：2021-01-14

申请号：US17036055

申请日：2020-09-29

Applicant: Alexei Davydov ,  Avik Sengupta

Inventor： Alexei Davydov ,  Avik Sengupta

IPC: H04W72/04 ,  H04L5/00

Abstract: Embodiments of a user equipment (UE) configured for operation in a fifth generation (5G) new radio (NR) network are disclosed herein. In some embodiments, a media access control Layer (MAC) control element (CE) (MAC CE) may activate a spatial relation info for a sounding reference signal (SRS) resource for two or more indicated component carriers (CCs). The spatial relation info for the SRS resource for the two or more indicated CCs may be applied in response to the activation. The SRS resource may be transmitted in the two or more indicated CCs with a same spatial transmission filter that is used for another reference signal configured in the spatial relation info when the UE is configured with one or more SRS resource configurations and when the spatial relation info is activated.

公开(公告)号：US20190273578A1

公开(公告)日：2019-09-05

申请号：US16418768

申请日：2019-05-21

Applicant: Jeongho Jeon ,  Gang Xiong ,  Bishwarup Mondal ,  Carlos Aldana ,  Hwan-Joon Kwon ,  Alexei Davydov ,  Seau S. Lim

Inventor： Jeongho Jeon ,  Gang Xiong ,  Bishwarup Mondal ,  Carlos Aldana ,  Hwan-Joon Kwon ,  Alexei Davydov ,  Seau S. Lim

IPC: H04L1/00 ,  H04W74/08 ,  H04W72/08 ,  H04B17/327 ,  H04B17/10

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The gNB may encode multiple candidate code-block groups to be available for a transmission in unlicensed spectrum, wherein one of the candidate code-block groups is to be transmitted based on a listen-before-talk (LBT) process. Each of the candidate code-block groups may be mapped to a different subset of channels in the unlicensed spectrum. The gNB may determine, based on one or more channel measurements, one or more of the channels that are available for the transmission. The gNB may select, as the candidate code-block group to be transmitted, a candidate code-block group for which the subset of the channels that is mapped to the selected candidate code-block group is included in the one or more channels that are available for the transmission.

公开(公告)号：US20190068268A1

公开(公告)日：2019-02-28

申请号：US16172602

申请日：2018-10-26

Applicant: Yushu Zhang ,  Victor Sergeev ,  Guotong Wang ,  Alexei Davydov ,  Gang Xiong

Inventor： Yushu Zhang ,  Victor Sergeev ,  Guotong Wang ,  Alexei Davydov ,  Gang Xiong

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0408 ,  H04W72/04 ,  H04W76/27 ,  H04L1/18

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes). The second circuitry may be operable to generate an Uplink (UL) transmission carrying a Layer Indicator (LI) based at least on a number of PT-RS Antenna Ports (APs) associated with the PT-RSes.