公开(公告)号：US20170171014A1

公开(公告)日：2017-06-15

申请号：US15309804

申请日：2014-09-01

Applicant: ZTE CORPORATION

Inventor： Zewei CHEN ,  Bo DAI ,  Yu Ngok LI ,  Zhisong ZUO ,  Jun XU ,  Shuqiang XIA

IPC: H04L27/36 ,  H04L29/06 ,  H04L29/08 ,  H03C7/02 ,  H04L1/00 ,  H04L25/03

CPC classification number: H04L27/36 ,  H03C7/02 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/003 ,  H04L25/03866 ,  H04L29/0651 ,  H04L29/08108 ,  H04L2001/0092 ,  H04L2027/0097 ,  H04W72/042

Abstract: The present document provides a modulation processing method and apparatus for high-order coding, a base station and a terminal, herein the method includes: a base station selecting a Modulation and Coding Scheme (MCS) table according to a transmission type and predefined information, herein the MCS table includes a MCS table supporting a M-order modulation and a MCS table not supporting a M-order modulation, herein M>64; and the base station transmitting downlink control signaling to a terminal, the downlink control signaling including a modulation and coding scheme field IMCS, herein the IMCS is based on the MCS table supporting or not supporting a M-order modulation selected by the base station.

公开(公告)号：US20110142161A1

公开(公告)日：2011-06-16

申请号：US12966587

申请日：2010-12-13

Applicant: Won Gyu SONG ,  Byoung Gil KIM ,  Jin Woo KIM ,  Hyoung Gon LEE ,  Jae Hyung SONG ,  In Hwan CHOI ,  Chul Kyu MUN

Inventor： Won Gyu SONG ,  Byoung Gil KIM ,  Jin Woo KIM ,  Hyoung Gon LEE ,  Jae Hyung SONG ,  In Hwan CHOI ,  Chul Kyu MUN

IPC: H04L27/00

CPC classification number: H04L27/04 ,  H04L1/0054 ,  H04L1/006 ,  H04L25/0226 ,  H04L2025/03382 ,  H04L2027/0097

Abstract: A transmitting system and a method of transmitting digital broadcast signal are disclosed. The method of transmitting digital broadcasting signal in a transmitter includes forming a data group including mobile data, known data sequences, trellis initialization data bytes, wherein the known data sequences are sequentially concatenated with the trellis initialization bytes, interleaving data in the data group, wherein the data group includes a plurality of data blocks and scalable data blocks, wherein the known data sequences inserted in a predetermined area of the data group, trellis encoding on the interleaved data and initializing memories for the trellis encoding using initial bits of the trellis initialization data bytes in the interleaved data, wherein the initial bits of the trellis initialization data bytes are calculated using exclusive or operation with predetermined memory values of the memories for the trellis encoding, transmitting a broadcast signal including the trellis encoded data during a slot.

Abstract translation: 公开了一种发送系统和发送数字广播信号的方法。 在发射机中发送数字广播信号的方法包括形成包括移动数据，已知数据序列，网格初始化数据字节的数据组，其中已知数据序列与网格初始化字节顺序连接，交织数据组中的数据，其中 数据组包括多个数据块和可伸缩数据块，其中插入在数据组的预定区域中的已知数据序列，对交错数据进行网格编码，并使用网格初始化数据的初始位来初始化存储器进行网格编码 字节，其中网格初始化数据字节的初始比特使用专用或操作用于网格编码的存储器的预定存储器值来计算，在时隙期间发送包括格状编码数据的广播信号。

公开(公告)号：US07920081B2

公开(公告)日：2011-04-05

申请号：US12841354

申请日：2010-07-22

Applicant: Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

Inventor： Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

IPC: H03M1/06

CPC classification number: H03M1/0639 ,  G04F10/005 ,  H03L7/091 ,  H03L7/0991 ,  H03L2207/50 ,  H03M1/12 ,  H04L5/0007 ,  H04L27/0014 ,  H04L27/2657 ,  H04L2027/0016 ,  H04L2027/0051 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0097

Abstract: An embodiment of the present invention provides a phase locked loop that operates on clock signals derived from an RF clock signal generated by the phase locked loop. A frequency reference input provides a reference clock. A controllable oscillator generates the RF clock signal. A phase detection circuit operates on the reference clock to provide digital phase error samples indicative of a phase difference between the reference clock and the RF clock. A dithering circuit is coupled to the reference signal and injects a short sequence dither signal into the reference signal in order to overcome quantization noise and thereby improve RMS phase-error detection for integer channels.

Abstract translation: 本发明的一个实施例提供了一种锁相环，其对由锁相环产生的RF时钟信号导出的时钟信号进行操作。 频率参考输入提供参考时钟。 可控振荡器产生RF时钟信号。 相位检测电路对参考时钟进行操作，以提供指示参考时钟和RF时钟之间的相位差的数字相位误差样本。 抖动电路耦合到参考信号，并将短序列抖动信号注入到参考信号中，以便克服量化噪声，从而改进整数信道的RMS相位误差检测。

公开(公告)号：US20100283654A1

公开(公告)日：2010-11-11

申请号：US12841354

申请日：2010-07-22

Applicant: Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

Inventor： Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

IPC: H03M1/50 ,  H03M1/12

CPC classification number: H03M1/0639 ,  G04F10/005 ,  H03L7/091 ,  H03L7/0991 ,  H03L2207/50 ,  H03M1/12 ,  H04L5/0007 ,  H04L27/0014 ,  H04L27/2657 ,  H04L2027/0016 ,  H04L2027/0051 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0097

Abstract: An embodiment of the present invention provides a phase locked loop that operates on clock signals derived from an RF clock signal generated by the phase locked loop. A frequency reference input provides a reference clock. A controllable oscillator generates the RF clock signal. A phase detection circuit operates on the reference clock to provide digital phase error samples indicative of a phase difference between the reference clock and the RF clock. A dithering circuit is coupled to the reference signal and injects a short sequence dither signal into the reference signal in order to overcome quantization noise and thereby improve RMS phase-error detection for integer channels.

Abstract translation: 本发明的一个实施例提供了一种锁相环，其对由锁相环产生的RF时钟信号导出的时钟信号进行操作。 频率参考输入提供参考时钟。 可控振荡器产生RF时钟信号。 相位检测电路对参考时钟进行操作，以提供指示参考时钟和RF时钟之间的相位差的数字相位误差样本。 抖动电路耦合到参考信号，并将短序列抖动信号注入到参考信号中，以便克服量化噪声，从而改进整数信道的RMS相位误差检测。

公开(公告)号：US07684473B2

公开(公告)日：2010-03-23

申请号：US11224916

申请日：2005-09-12

Applicant: Jay Rodney Walton ,  Mark S. Wallace

Inventor： Jay Rodney Walton ,  Mark S. Wallace

IPC: H04B1/00

CPC classification number: H04L1/0072 ,  H04B1/7073 ,  H04B1/7075 ,  H04L1/0045 ,  H04L25/0204 ,  H04L25/0216 ,  H04L25/0228 ,  H04L27/0006 ,  H04L27/0014 ,  H04L2027/0038 ,  H04L2027/0065 ,  H04L2027/0097

Abstract: Techniques for detecting and demodulating a signal/transmission are described. Signal detection is performed in multiple stages using different types of signal processing, e.g., using time-domain correlation for a first stage, frequency-domain processing for a second stage, and time-domain processing for a third stage. For the first stage, products of symbols are generated for at least two different delays, correlation between the products for each delay and known values is performed, and correlation results for all delays are combined and used to declare the presence of a signal. For demodulation, the timing of input samples is adjusted to obtain timing-adjusted samples. A frequency offset is estimated and removed from the timing-adjusted samples to obtain frequency-corrected samples, which are processed with a channel estimate to obtain detected symbols. The phases of the detected symbols are corrected to obtain phase corrected symbols, which are demodulated, deinterleaved, and decoded.

Abstract translation: 描述用于检测和解调信号/传输的技术。 使用不同类型的信号处理，例如使用第一级的时域相关，第二级的频域处理，以及第三级的时域处理，来进行信号检测。 对于第一阶段，对于至少两个不同的延迟生成符号的乘积，执行每个延迟的乘积和已知值之间的相关性，并且将所有延迟的相关结果组合并用于声明信号的存在。 为了进行解调，调整输入样本的定时以获得经时间调整的样本。 频率偏移被估计并从定时调整的样本中去除以获得频率校正的样本，其被采用信道估计来处理以获得检测到的符号。 对检测到的符号的相位进行校正，以获得解调，解交织和解码的相位校正符号。

公开(公告)号：US06606363B1

公开(公告)日：2003-08-12

申请号：US09473927

申请日：1999-12-28

Applicant: Roozbeh Atarius ,  Rajaram Ramesh

Inventor： Roozbeh Atarius ,  Rajaram Ramesh

IPC: H04L704

CPC classification number: H04L27/0014 ,  H04L2027/0065 ,  H04L2027/0097

Abstract: A method and apparatus estimate an offset between a carrier frequency of a transmitter and a local reference frequency of a receiver. A received signal is separated into frequency synchronization signals and data, and a determination is made whether the frequency synchronization signals are adequate for estimating the frequency offset. This determination may be made based on, e.g., an estimated Doppler spread, an estimated signal to noise ratio, and/or an available amount of frequency offset estimation time. The frequency offset is estimated based on the determination results. If the frequency synchronization signals are adequate for estimating the frequency offset, the frequency synchronization signals are used for determining the frequency offset. Otherwise, the rate of the frequency synchronization signals is increased, e.g., by using the data as frequency synchronization signals, in which case the data is combined with the frequency synchronization signals to determine the frequency offset.

Abstract translation: 方法和装置估计发射机的载波频率和接收机的本地参考频率之间的偏移。 将接收到的信号分离成频率同步信号和数据，并且确定频率同步信号是否足以估计频率偏移。 可以基于例如估计的多普勒扩展，估计的信噪比和/或可用的频率偏移估计时间量来进行该确定。 基于确定结果估计频率偏移。 如果频率同步信号足以估计频率偏移，则使用频率同步信号来确定频率偏移。 否则，例如通过使用数据作为频率同步信号来增加频率同步信号的速率，在这种情况下，数据与频率同步信号组合以确定频率偏移。

公开(公告)号：US20150215763A1

公开(公告)日：2015-07-30

申请号：US14607830

申请日：2015-01-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sangmin Ro ,  Yongjun Kwak ,  Jinyoung Oh ,  Seunghoon Choi

IPC: H04W8/00 ,  H04W56/00 ,  H04W48/16

CPC classification number: H04W84/18 ,  H04B7/2696 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2657 ,  H04L29/08306 ,  H04L2027/0097 ,  H04W4/70 ,  H04W8/005 ,  H04W56/001 ,  H04W56/002 ,  H04W56/0025 ,  H04W76/14 ,  H04W88/06 ,  H04W92/18

Abstract: Provided is a method of generating a Device-to-Device Synchronization Signal (D2DSS) by a terminal according to an embodiment of the present disclosure. The method includes determining a service attribute for identifying whether the terminal is serviced by at least one base station; and generating a D2DSS for identifying whether the terminal is serviced by the base station, based on the determination result. In addition, provided is a method of configuring D2D synchronization by a terminal according to an embodiment of the present disclosure. The method includes receiving a signal from at least one base station or another device; determining whether a synchronization signal is detected from the received signal; and when the synchronization signal is detected, configuring synchronization with the another device based on the timing reference of the detected synchronization signal.

Abstract translation: 提供了根据本公开的实施例的由终端生成设备到设备同步信号（D2DSS）的方法。 该方法包括确定用于识别终端是否由至少一个基站服务的服务属性; 以及基于确定结果生成用于识别终端是否由基站服务的D2DSS。 此外，提供了根据本公开的实施例的由终端配置D2D同步的方法。 该方法包括从至少一个基站或另一个设备接收信号; 根据接收到的信号确定是否检测到同步信号; 并且当检测到同步信号时，基于检测到的同步信号的定时参考来配置与另一设备的同步。

公开(公告)号：US08483329B2

公开(公告)日：2013-07-09

申请号：US12529409

申请日：2008-03-06

Applicant: Monisha Ghosh

Inventor： Monisha Ghosh

IPC: H04L27/06

CPC classification number: H04L27/063 ,  H04B1/719 ,  H04L5/0007 ,  H04L5/0032 ,  H04L27/0014 ,  H04L27/2647 ,  H04L2027/0028 ,  H04L2027/0087 ,  H04L2027/0097

Abstract: To quickly and robustly detect the presence of an incumbent user and rapidly relinquish the spectrum to the incumbent user when necessary, carrier recovery is performed in a receiver of the secondary user's cognitive or software radio prior to performing correlation detection with an upsampled reference signal to correct for large frequency offsets and improve the performance of the correlation detector. To detect a received signal, a pilot value is added to a reference signal. The reference signal is upsampled to a sampling frequency of the received signal. The upsampled reference signal is correlated with a demodulated baseband signal to produce a correlation value. It is then determined whether the received signal is present if the correlation value is greater than a predetermined detection threshold value.

Abstract translation: 为了快速且鲁棒地检测现有用户的存在并且在必要时快速将频谱放弃给现有用户，在用上采样的参考信号执行相关检测之前，在次用户的认知或软件无线电的接收机中执行载波恢复以校正 用于大频率偏移并提高相关检测器的性能。 为了检测接收到的信号，将导频值加到参考信号。 参考信号被上采样到接收信号的采样频率。 上采样参考信号与解调的基带信号相关，以产生相关值。 然后，如果相关值大于预定检测阈值，则确定接收信号是否存在。

公开(公告)号：US20110148676A1

公开(公告)日：2011-06-23

申请号：US13038885

申请日：2011-03-02

Applicant: Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

Inventor： Khurram Waheed ,  Mahbuba Sheba ,  Robert Bogdan Staszewski ,  Socrates Vamvakos

IPC: H03M1/20

CPC classification number: H03M1/0639 ,  G04F10/005 ,  H03L7/091 ,  H03L7/0991 ,  H03L2207/50 ,  H03M1/12 ,  H04L5/0007 ,  H04L27/0014 ,  H04L27/2657 ,  H04L2027/0016 ,  H04L2027/0051 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0097

Abstract: An embodiment of the present invention provides a phase locked loop that operates on clock signals derived from an RF clock signal generated by the phase locked loop. A frequency reference input provides a reference clock. A controllable oscillator generates the RF clock signal. A phase detection circuit operates on the reference clock to provide digital phase error samples indicative of a phase difference between the reference clock and the RF clock. A dithering circuit is coupled to the reference signal and injects a short sequence dither signal into the reference signal in order to overcome quantization noise and thereby improve RMS phase-error detection for integer channels.

Abstract translation: 本发明的一个实施例提供了一种锁相环，其对由锁相环产生的RF时钟信号导出的时钟信号进行操作。 频率参考输入提供参考时钟。 可控振荡器产生RF时钟信号。 相位检测电路对参考时钟进行操作，以提供指示参考时钟和RF时钟之间的相位差的数字相位误差样本。 抖动电路耦合到参考信号，并将短序列抖动信号注入到参考信号中，以便克服量化噪声，从而改进整数信道的RMS相位误差检测。

公开(公告)号：US20100035568A1

公开(公告)日：2010-02-11

申请号：US12529409

申请日：2008-03-06

Applicant: Monisha Ghosh

Inventor： Monisha Ghosh

IPC: H04B1/18

CPC classification number: H04L27/063 ,  H04B1/719 ,  H04L5/0007 ,  H04L5/0032 ,  H04L27/0014 ,  H04L27/2647 ,  H04L2027/0028 ,  H04L2027/0087 ,  H04L2027/0097

Abstract: To quickly and robustly detect the presence of an incumbent user and rapidly relinquish the spectrum to the incumbent user when necessary, carrier recovery is performed in a receiver of the secondary user's cognitive or software radio prior to performing correlation detection with an upsampled reference signal to correct for large frequency offsets and improve the performance of the correlation detector. To detect a received signal, a pilot value is added to a reference signal. The reference signal is upsampled to a sampling frequency of the received signal. The upsampled reference signal is correlated with a demodulated baseband signal to produce a correlation value. It is then determined whether the received signal is present if the correlation value is greater than a predetermined detection threshold value.

Abstract translation: 为了快速且鲁棒地检测现有用户的存在并且在必要时快速将频谱放弃给现有用户，在用上采样的参考信号执行相关检测之前，在次用户的认知或软件无线电的接收机中执行载波恢复以校正 用于大频率偏移并提高相关检测器的性能。 为了检测接收到的信号，将导频值加到参考信号。 参考信号被上采样到接收信号的采样频率。 上采样参考信号与解调的基带信号相关，以产生相关值。 然后，如果相关值大于预定检测阈值，则确定接收信号是否存在。