公开(公告)号：US12074750B2

公开(公告)日：2024-08-27

申请号：US17184966

申请日：2021-02-25

申请人： QUALCOMM Incorporated

发明人： Idan Michael Horn ,  Assaf Touboul ,  Shay Landis ,  Amit Bar-Or Tillinger

IPC分类号： H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04L27/233

CPC分类号： H04L27/26132 ,  H04L1/0067 ,  H04L5/001 ,  H04L5/0098 ,  H04L27/2332 ,  H04L27/26025 ,  H04L27/2637 ,  H04L27/2653 ,  H04L27/2666

摘要： Methods, systems, and devices for wireless communications are described. A transmitting device may encode a set of bits to transmit to a receiving device based on a repetition factor. The transmitting device may map, based on the repetition factor, the set of encoded bits to a subset of subcarriers such as adjacent subcarriers of a set of subcarriers. The transmitting device may generate a signal including the set of encoded bits based on the mapping, and transmit the generated signal to the receiving device. The receiving device may receive a modulated signal from the transmitting device, and identify, based on a repetition factor, a subset of subcarriers including adjacent subcarriers of a set of subcarriers associated with the modulated signal. The receiving device may average the subset of subcarriers including the adjacent subcarriers, and demodulate the modulated signal in accordance with the averaged subset of subcarriers including the adjacent subcarriers.

公开(公告)号：US09998159B2

公开(公告)日：2018-06-12

申请号：US15399472

申请日：2017-01-05

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Francois Dehmas

IPC分类号： H04B1/10 ,  H04L27/22 ,  G06F7/48 ,  H04B1/00 ,  H04L27/00 ,  H04L27/38 ,  H04L27/227 ,  H04L27/233 ,  H04L27/26 ,  H04L25/02 ,  H04L7/00

CPC分类号： H04B1/1036 ,  G06F7/4818 ,  H04B1/0007 ,  H04L7/0054 ,  H04L7/0087 ,  H04L25/0202 ,  H04L27/0014 ,  H04L27/22 ,  H04L27/2273 ,  H04L27/2332 ,  H04L27/266 ,  H04L27/2679 ,  H04L27/38 ,  H04L27/3827 ,  H04L2027/003 ,  H04L2027/0055 ,  H04L2027/0057 ,  H04L2027/0065

摘要： A robust frequency drift tracking receiver. The received signal is translated to an intermediate frequency in the RF stage by a quadrature demodulator, and is then brought into the base band by a digital mixer made by a CORDIC. A base band processing stage allows for a synchronization of the receiver relative to the data frame, to estimate data and to output a counter-reaction signal to the CORDIC, obtained by integration of successive frequency corrections, with a predetermined step.

公开(公告)号：US09722728B2

公开(公告)日：2017-08-01

申请号：US15290346

申请日：2016-10-11

申请人： Cisco Technology, Inc.

发明人： Andreas Bisplinghoff

IPC分类号： H03M13/00 ,  H04L1/00 ,  H03M13/35 ,  H03M13/25 ,  H04L27/18 ,  H04L27/04 ,  H04L27/233 ,  H04L27/36 ,  H03M13/23

CPC分类号： H04L1/007 ,  H03M13/23 ,  H03M13/256 ,  H03M13/258 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0041 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/006 ,  H04L27/04 ,  H04L27/18 ,  H04L27/22 ,  H04L27/2332 ,  H04L27/362

摘要： Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.

公开(公告)号：US20170201404A1

公开(公告)日：2017-07-13

申请号：US15401306

申请日：2017-01-09

申请人： MStar Semiconductor, Inc.

发明人： Yu-Che SU ,  Tai-Lai TUNG

IPC分类号： H04L27/227 ,  H04L27/26

CPC分类号： H04L27/2273 ,  H04L27/0014 ,  H04L27/2332 ,  H04L27/2614

摘要： An apparatus for estimating carrier frequency offset includes an Mth power circuit, a spectrum generating circuit, a peak frequency determining circuit and a frequency offset determining circuit. The Mth power circuit performs an Mth power calculation on an input signal to generate an Mth power calculation result. The spectrum generating circuit generates an Mth power spectrum according to the Mth power calculation result. The peak frequency determining circuit determines a peak frequency corresponding to an amplitude peak from the Mth power spectrum. The frequency offset determining circuit determines an estimated carrier frequency offset according to the peak frequency.

公开(公告)号：US09564963B2

公开(公告)日：2017-02-07

申请号：US12340939

申请日：2008-12-22

申请人： Gary R. Lomp ,  Faith M. Ozluturk ,  John Kowalski

发明人： Gary R. Lomp ,  Faith M. Ozluturk ,  John Kowalski

IPC分类号： H04L27/00 ,  H04B7/26 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04J13/00 ,  H04J13/10 ,  H04L25/02 ,  H04L27/20 ,  H04L27/233 ,  H04W52/04 ,  H04W52/08 ,  H04W52/14 ,  H04W52/24 ,  H04W52/32 ,  H04W52/34 ,  H04W52/36 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  G06F13/374 ,  H03H17/02 ,  H04L5/14 ,  H04N1/00 ,  H04N1/333 ,  H04B1/7115 ,  H04B1/712 ,  H04J13/12 ,  H04L1/00 ,  H04W52/26 ,  H04W52/44 ,  H04W52/60 ,  H03H17/06 ,  H04B1/7077 ,  H04J13/16

CPC分类号： H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.

摘要翻译： 接收机通过所需接收信号的频谱接收信号和噪声。 期望的接收信号使用码分多址进行传播。 接收的信号和噪声被解调以产生解调信号。 使用与所需接收信号相关联的代码不相关的代码来解调解调信号。 解扩解调信号的功率电平被测量为频谱的噪声电平的估计。

公开(公告)号：US20160112228A1

公开(公告)日：2016-04-21

申请号：US14985317

申请日：2015-12-30

申请人： Wi-Fi One, LLC

发明人： Dae Won Lee ,  Dong Wook Roh ,  Byeong Woo Kang ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim

IPC分类号： H04L27/26 ,  H04B7/04 ,  H04W84/12

CPC分类号： H04L27/261 ,  H03M5/12 ,  H04B7/0413 ,  H04L1/0041 ,  H04L1/0061 ,  H04L25/4904 ,  H04L27/14 ,  H04L27/144 ,  H04L27/148 ,  H04L27/1563 ,  H04L27/22 ,  H04L27/2273 ,  H04L27/2331 ,  H04L27/2332 ,  H04L27/2613 ,  H04L27/2647 ,  H04L2027/0028 ,  H04N5/4401 ,  H04Q1/46 ,  H04W28/06 ,  H04W84/12

摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

摘要翻译： 一种在非常高吞吐量（VHT）无线局域网（WLAN）系统中发送物理层汇聚程序（PLCP）帧的方法包括生成要发送到目的站（STA）的MAC协议数据单元（MPDU） 通过将包含包含用于传统STA的控制信息的L-SIG字段和包含用于VHT STA的控制信息的VHT-SIG字段的L-SIG字段的PLCP头添加到MPDU来生成PLCP协议数据单元（PPDU），以及发送PPDU 到目的地STA。 通过旋转施加到L-SIG字段的OFDM符号的星座来获得应用于VHT-SIG字段的一些正交频分复用（OFDM）符号的星座。

公开(公告)号：US08976713B2

公开(公告)日：2015-03-10

申请号：US13564367

申请日：2012-08-01

申请人： Seungjae Bahng ,  Hoon Lee

发明人： Seungjae Bahng ,  Hoon Lee

IPC分类号： H01Q21/06 ,  H01Q3/00 ,  H04B7/02 ,  H04L27/00 ,  H04B1/38 ,  H04M1/00 ,  H04B7/10 ,  H04L27/233 ,  H01Q3/08

CPC分类号： H04B7/10 ,  H01Q3/08 ,  H04L27/2332

摘要： There are provided a method and apparatus for transmitting and receiving signals in the same frequency band at the same time. A signal is received using a dual polarization antenna, the main axis of the polarization of the reception signal is predicted by performing adaptive polarization tracking, and polarization filtering is performed in order to remove interference. A signal is transmitted through a polarization completely orthogonal to the tracked polarization. In accordance with the present invention, in a wireless communication system, signals can be transmitted and received in the same frequency band at the same time.

摘要翻译： 提供了一种在同一频带内发送和接收信号的方法和装置。 使用双极化天线接收信号，通过执行自适应偏振跟踪来预测接收信号的极化的主轴，并执行偏振滤波以消除干扰。 通过与跟踪的极化完全正交的偏振来传输信号。 根据本发明，在无线通信系统中，可以同时在相同频带中发送和接收信号。

公开(公告)号：US08934858B2

公开(公告)日：2015-01-13

申请号：US13979109

申请日：2012-01-17

申请人： Yuuzou Suzuki

发明人： Yuuzou Suzuki

IPC分类号： H04B1/06 ,  H04B7/00 ,  H03D9/00 ,  H03G3/30 ,  H04L25/49 ,  H04L27/233 ,  H04L27/38

CPC分类号： H03D9/00 ,  H03G3/3052 ,  H04L25/4902 ,  H04L27/2332 ,  H04L27/3809

摘要： A digital demodulation circuit amplifies a received signal of an intermediate frequency with a variable gain control amplifier so as to convert it into a baseband signal, which is separated into a common-mode component and an orthogonal component. A first gain control voltage is generated based on the common-mode component and the orthogonal component. Additionally, a temperature correction value is generated by smoothing a pulse-width modulation signal, having a pulse width corresponding to ambient temperature, and by adding a predetermined gain and an offset thereto. A second gain control voltage is generated by adding the temperature correction value to the first gain control voltage. The variable gain control amplifier amplifies a received signal with the second gain control voltage. Thus, it is possible to achieve a temperature compensation function and an automatic gain control function in the digital demodulation circuit with a simple circuit configuration.

摘要翻译： 数字解调电路用可变增益控制放大器对接收的中频信号进行放大，以便将其转换为分为共模分量和正交分量的基带信号。 基于共模分量和正交分量产生第一增益控制电压。 此外，通过对具有对应于环境温度的脉冲宽度的脉冲宽度调制信号进行平滑，并通过增加预定的增益和偏移来产生温度校正值。 通过将温度校正值与第一增益控制电压相加来产生第二增益控制电压。 可变增益控制放大器利用第二增益控制电压来放大接收信号。 因此，可以以简单的电路结构在数字解调电路中实现温度补偿功能和自动增益控制功能。

公开(公告)号：US08737363B2

公开(公告)日：2014-05-27

申请号：US13041745

申请日：2011-03-07

申请人： Fatih M. Ozluturk ,  Alexander M. Jacques ,  Gary R. Lomp ,  John Kowalski

发明人： Fatih M. Ozluturk ,  Alexander M. Jacques ,  Gary R. Lomp ,  John Kowalski

IPC分类号： H04B7/216

CPC分类号： H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first and second despreaders. The base station assigns the rate function spread-spectrum message channels and the first despreader recovers and modifies an information signal one of the spread spectrum message channels. The information channel mode is then modified for processing by the second despreader, with the second despreader supporting a different information signal rate. The subscriber unit has a capability of communicating with a dynamically changing a transmission rate of an information signal which includes multiple spread spectrum message channels. The system includes a closed loop power control system for maintaining a minimum system transmit power level for a radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance.

摘要翻译： 用于多址扩频通信系统的用户单元包括响应于来自基站的速率函数信号的扩频无线电接口以及第一和第二解扩器。 基站分配速率函数扩频消息信道，第一解扩器恢复扩频信息信道之一的信息信号。 然后，信息信道模式被修改用于由第二解扩器进行处理，第二解扩器支持不同的信息信号速率。 用户单元具有与动态地改变包括多个扩频消息信道的信息信号的传输速率进行通信的能力。 该系统包括用于维持无线电载波台和用户单元的最小系统发射功率电平的闭环功率控制系统和用于维持最大数量的活动用户单元以提高系统性能的系统容量管理。

公开(公告)号：US20110110348A1

公开(公告)日：2011-05-12

申请号：US12941974

申请日：2010-11-08

申请人： Dae Won Lee ,  Dong Wook Roh ,  Byeong Woo Kang ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim

发明人： Dae Won Lee ,  Dong Wook Roh ,  Byeong Woo Kang ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim

IPC分类号： H04W40/00

CPC分类号： H04L27/261 ,  H03M5/12 ,  H04B7/0413 ,  H04L1/0041 ,  H04L1/0061 ,  H04L25/4904 ,  H04L27/14 ,  H04L27/144 ,  H04L27/148 ,  H04L27/1563 ,  H04L27/22 ,  H04L27/2273 ,  H04L27/2331 ,  H04L27/2332 ,  H04L27/2613 ,  H04L27/2647 ,  H04L2027/0028 ,  H04N5/4401 ,  H04Q1/46 ,  H04W28/06 ,  H04W84/12

摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

摘要翻译： 一种在非常高吞吐量（VHT）无线局域网（WLAN）系统中发送物理层汇聚程序（PLCP）帧的方法包括生成要发送到目的站（STA）的MAC协议数据单元（MPDU） 通过将包含包含用于传统STA的控制信息的L-SIG字段和包含用于VHT STA的控制信息的VHT-SIG字段的L-SIG字段的PLCP头添加到MPDU来生成PLCP协议数据单元（PPDU），以及发送PPDU 到目的地STA。 通过旋转施加到L-SIG字段的OFDM符号的星座来获得应用于VHT-SIG字段的一些正交频分复用（OFDM）符号的星座。