公开(公告)号：US20140003308A1

公开(公告)日：2014-01-02

申请号：US13796869

申请日：2013-03-12

Applicant: QUALCOMM INCORPORATED

Inventor： Nicola Varanese ,  Christian Pietsch ,  Juan Montojo ,  Andrea Maria Garavaglia

IPC: H04J4/00

CPC classification number: H04J4/005 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: A physical-layer device includes a first sublayer to receive a first continuous bitstream from a media-independent interface and to provide a second continuous bitstream to the media-independent interface. The physical-layer device also includes a second sublayer to transmit first signals corresponding to the first continuous bitstream and to receive second signals corresponding to the second continuous bitstream. The second sublayer is to transmit the first signals and receive the second signals using time-division duplexing in a first mode of operation and using frequency-division duplexing in a second mode of operation.

Abstract translation: 物理层设备包括第一子层，用于从媒体独立接口接收第一连续比特流，并向媒体独立接口提供第二连续比特流。 物理层设备还包括第二子层，用于发送对应于第一连续比特流的第一信号并且接收对应于第二连续比特流的第二信号。 第二子层是在第一操作模式中使用时分复用来发送第一信号并接收第二信号，并且在第二操作模式中使用频分双工。

公开(公告)号：US20220361101A1

公开(公告)日：2022-11-10

申请号：US17308524

申请日：2021-05-05

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Christian Pietsch ,  Oren Matsrafi ,  Ronen Greenberger ,  Yossi Waldman ,  Jong Hyeon Park ,  Yuval Neeman ,  Peter Zillmann

IPC: H04W52/02 ,  H04W72/04 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, one or more downlink grants scheduling one or more corresponding downlink transmissions from the base station to the UE. In some examples, the UE may enter a state of sleep prior to receiving the one or more downlink transmissions. In such examples, the UE may wake up from the state of sleep at a first time that is at least a threshold period of time before a second time corresponding to a beginning of the one or more downlink transmissions. After waking up from the state of sleep, the UE may activate a notch filter and use the activated notch filter to filter a spur generated at the UE. The UE may receive the one or more downlink transmissions with improved reliability based on activating the notch filter.

公开(公告)号：US09780921B2

公开(公告)日：2017-10-03

申请号：US14329651

申请日：2014-07-11

Applicant: QUALCOMM Incorporated

Inventor： Peter Zillmann ,  Christoph Arnold Joetten ,  Christian Pietsch ,  Nicola Varanese

IPC: H04L1/00 ,  H04L25/02

CPC classification number: H04L1/0083 ,  H04L1/0039 ,  H04L25/0262

Abstract: A receiver receives packets without prior knowledge of their bandwidths. The receiver calculates a first auto-correlation function for a first channel, a second auto-correlation function for a second channel, and a dot product of the first auto-correlation function and the second auto-correlation function. A packet is detected and its bandwidth classified based at least in part on the dot product.

公开(公告)号：US09444595B2

公开(公告)日：2016-09-13

申请号：US14242609

申请日：2014-04-01

Applicant: QUALCOMM Incorporated

Inventor： Lu Zhao ,  Juan Montojo ,  Christian Pietsch

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04L27/00

CPC classification number: H04L27/0006 ,  H04L5/0048 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2636

Abstract: Methods, systems, and devices are described for generating a hybrid waveform for data transmission between a transmitting device and a receiving device. The transmitting device may employ an OFDM processing technique to periodically transmit known first pilot symbols mapped from a signal constellation where each signal has equal energy during a first time period and a cyclic prefix based single-carrier (CP-SC) processing technique to transmit data packets and second known pilot symbols during a second time period. Channel estimation is based on first pilot symbols, which are inserted into all subcarriers of OFDM symbol blocks within a specific period. Channel estimation tracking is based on the second pilot symbols interleaved within data packets. The receiving device may be configured to estimate CSI based in part on first pilot symbols and to track the channel estimation based in part on the second pilot symbols in order to provide reliable data detection.

Abstract translation: 描述了用于生成用于发送设备和接收设备之间的数据传输的混合波形的方法，系统和设备。 发送设备可以采用OFDM处理技术来周期性地发送从信号星座映射的已知的第一导频符号，其中每个信号在第一时间段期间具有相等的能量，并且基于循环前缀的单载波（CP-SC）处理技术来发送数据 分组和第二已知导频符号。 信道估计基于第一导频符号，其被插入到特定时段内的OFDM符号块的所有子载波中。 信道估计跟踪基于在数据分组内交错的第二导频符号。 接收设备可以被配置为部分地基于第一导频符号来估计CSI，并且部分地基于第二导频符号来跟踪信道估计，以便提供可靠的数据检测。

公开(公告)号：US09172574B1

公开(公告)日：2015-10-27

申请号：US14329563

申请日：2014-07-11

Applicant: QUALCOMM Incorporated

Inventor： Peter Zillmann ,  Christoph Arnold Joetten ,  Christian Pietsch

IPC: H04K1/02 ,  H04L27/26 ,  H04L27/36

CPC classification number: H04L27/2623 ,  H04L27/3411

Abstract: To reduce the peak-to-average power ratio (PAPR) of a complex-valued digital baseband signal, the signal is mixed to an intermediate frequency and its real components extracted, to generate an intermediate-frequency real-valued digital signal. The intermediate frequency is one-quarter of a sampling rate of the complex-valued digital baseband signal. The intermediate-frequency real-valued digital signal is clipped and down-converted by one-quarter of the sampling rate.

Abstract translation: 为了降低复值数字基带信号的峰均功率比（PAPR），将信号混合到中频并提取其实部分量，以产生中频实数数字信号。 中频是复值数字基带信号采样率的四分之一。 中频实数数字信号被削波和下变频采样率的四分之一。

公开(公告)号：US09071358B2

公开(公告)日：2015-06-30

申请号：US13794450

申请日：2013-03-11

Applicant: QUALCOMM Incorporated

Inventor： Christian Pietsch ,  Nicola Varanese ,  Juan Montojo ,  Andrea Maria Garavaglia

IPC: H04J14/08 ,  G06F15/16 ,  H04L12/28 ,  H04B10/27 ,  H04J3/16 ,  H04Q11/00 ,  H04L12/64

CPC classification number: H04B10/271 ,  H04J3/1694 ,  H04L12/6418 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: An optical-coax unit (OCU) includes an optical PHY to receive and transmit optical signals and a coax PHY to receive and transmit coax signals. The OCU also includes a media-independent interface to provide a first continuous bitstream from the optical PHY to the coax PHY and a second continuous bitstream from the coax PHY to the optical PHY. The first continuous bitstream corresponds to received optical signals and transmitted coax signals, and the second continuous bitstream corresponds to received coax signals and transmitted optical signals.

Abstract translation: 光同轴电缆单元（OCU）包括用于接收和发送光信号的光学PHY和同轴电缆PHY以接收和发送同轴电缆信号。 OCU还包括媒体独立接口，用于提供从光学PHY到同轴电缆PHY的第一连续比特流和从同轴电缆PHY到光学PHY的第二连续比特流。 第一连续比特流对应于接收到的光信号和发射的同轴电缆信号，第二连续比特流对应于接收到的同轴电缆信号和发送的光信号。

公开(公告)号：US08982987B2

公开(公告)日：2015-03-17

申请号：US13853414

申请日：2013-03-29

Applicant: QUALCOMM Incorporated

Inventor： Nicola Varanese ,  Christian Pietsch ,  Juan Montojo ,  Christoph Arnold Joetten

IPC: H04L27/00 ,  H04L25/02 ,  H04L1/00 ,  H04L27/26 ,  H04L27/38

CPC classification number: H04L25/022 ,  H04L1/0001 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/3854 ,  H04L27/3863 ,  H04L27/3872 ,  H04L2027/003 ,  H04L2027/0073 ,  H04L2027/0089 ,  H04L2027/0093 ,  H04L2027/0095

Abstract: Successive pairs of OFDM symbols are transmitted by an OFDM transmitter and received by an OFDM receiver. The successive pairs include a first pair of OFDM symbols. First and second OFDM symbols of the first pair both include pilot symbols on two subcarriers that are symmetric about a center carrier frequency. The two subcarriers are the same for the first and second OFDM symbols. The pilot symbols on the two subcarriers for the first and second OFDM symbols compose an orthogonal matrix. The OFDM receiver estimates frequency responses at frequencies including the frequencies of the two subcarriers and compensates for signal impairment based at least in part on the estimated frequency responses.

Abstract translation: OFDM符号的连续对由OFDM发射机发射并由OFDM接收机接收。 连续对包括第一对OFDM符号。 第一对的第一和第二OFDM符号都包括在关于中心载波频率对称的两个子载波上的导频符号。 两个子载波对于第一和第二OFDM符号是相同的。 用于第一和第二OFDM符号的两个子载波上的导频符号构成正交矩阵。 OFDM接收机在包括两个子载波的频率的频率处估计频率响应，并且至少部分地基于所估计的频率响应来补偿信号损伤。

公开(公告)号：US08971465B2

公开(公告)日：2015-03-03

申请号：US13762206

申请日：2013-02-07

Applicant: QUALCOMM Incorporated

Inventor： Nicola Varanese ,  Christian Pietsch ,  Juan Montojo

IPC: H03D1/04 ,  H04L25/02 ,  H04L1/00 ,  H04L27/26 ,  H04L27/38 ,  H04L27/00

CPC classification number: H04L25/022 ,  H04L1/0001 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/3854 ,  H04L27/3863 ,  H04L27/3872 ,  H04L2027/003 ,  H04L2027/0073 ,  H04L2027/0089 ,  H04L2027/0093 ,  H04L2027/0095

Abstract: A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/Q mismatch for the receiver is estimated and compensation for the estimated I/Q mismatch is performed. After compensating for the estimated receiver I/Q mismatch, the carrier frequency offset is re-estimated.

Abstract translation: 接收机接收重复或周期性信号，并且基于该信号估计接收机的载波频率偏移。 基于信号和估计的载波偏移，估计接收机的I / Q不匹配，并执行估计的I / Q失配的补偿。 在补偿估计的接收机I / Q不匹配之后，重新估计载波频率偏移。

公开(公告)号：US20140313951A1

公开(公告)日：2014-10-23

申请号：US14229374

申请日：2014-03-28

Applicant: QUALCOMM Incorporated

Inventor： Nicola Varanese ,  Christian Pietsch ,  Juan Montojo

IPC: H04L1/00 ,  H04L5/22

CPC classification number: H04L1/0075 ,  H04L5/0048 ,  H04L5/22 ,  H04L27/2602 ,  H04L27/2613

Abstract: A coax network unit (CNU) coupled to a coax line terminal (CLT) receives a plurality of orthogonal frequency-division multiplexing (OFDM) symbols from the CLT and identifies a start-of-frame delimiter on a physical-layer (PHY) control channel in the plurality of OFDM symbols. The PHY control channel includes a plurality of contiguous subcarriers. The CNU decodes one or more forward error correction (FEC) code words that follow the start-of-frame delimiter on the PHY control channel. The one or more FEC code words provide PHY control data that include information specifying a structure of a PHY frame that includes the plurality of OFDM symbols.

Abstract translation: 耦合到同轴线路终端（CLT）的同轴电缆网络单元（CNU）从CLT接收多个正交频分复用（OFDM）符号，并且在物理层（PHY）控制上识别起始帧定界符 多个OFDM符号中的信道。 PHY控制信道包括多个连续子载波。 CNU解码在PHY控制信道上跟随起始帧定界符的一个或多个前向纠错（FEC）码字。 一个或多个FEC码字提供PHY控制数据，其包括指定包括多个OFDM符号的PHY帧的结构的信息。

公开(公告)号：US20140198865A1

公开(公告)日：2014-07-17

申请号：US13968270

申请日：2013-08-15

Applicant: QUALCOMM Incorporated

Inventor： Christian Pietsch ,  Juan Montojo ,  Nicola Varanese ,  Stefan Brueck ,  Hendrik Schoeneich ,  Christoph Arnold Joetten

IPC: H04L27/26

CPC classification number: H04L27/261 ,  H04L5/0048 ,  H04L5/1469 ,  H04Q11/0071

Abstract: A coax network unit (CNU) receives a first plurality of orthogonal frequency-division multiplexing (OFDM) symbols from a coax line terminal (CLT). The first plurality of OFDM symbols includes continual pilot symbols on one or more subcarriers. The CNU also receives a grant from the CLT allocating a set of subcarriers within a second plurality of OFDM symbols to the CNU. The CNU transmits upstream to the CLT using the allocated set of subcarriers within the second plurality of OFDM symbols. When transmitting, the CNU places non-continual pilot symbols on regularly spaced subcarriers of the allocated set of subcarriers and does not place continual pilot symbols within the allocated set of subcarriers.

Abstract translation: 同轴网络单元（CNU）从同轴线路终端（CLT）接收第一多个正交频分复用（OFDM）符号。 第一多个OFDM符号包括一个或多个子载波上的连续导频符号。 CNU还从CLT接收向第二多个OFDM符号内的一组子载波分配给CNU的授权。 CNU使用在第二多个OFDM符号内的所分配的一组子载波向CLT发送上行信号。 在发送时，CNU将非连续导频符号放置在所分配的子载波集合的规则间隔的子载波上，并且不将连续导频符号放置在所分配的子载波集合内。