公开(公告)号：WO2022100378A1

公开(公告)日：2022-05-19

申请号：PCT/CN2021/124646

申请日：2021-10-19

Applicant: 南京航空航天大学

Inventor： 王莉 ,  陈维佳

IPC: H04B1/69 ,  H04B1/7087 ,  H04B1/7093 ,  H04B3/06 ,  H04B3/46 ,  H04B3/54

Abstract: 本发明公开一种通过扩频载波实现故障诊断的方法，步骤如下：设计入射信号参数，选取用于故障检测的扩频序列，确定扩频码的中心频率和序列长度，对电力载波信源信号分段和改造；以故障检测扩频序列作为载波扩频码，对改造后的电力载波信源信号进行扩频调制，生成SSPLCR序列；将SSPLCR序列耦合至待测线缆中，线缆正常工作未发生故障时，SSPLCR信号经线缆传输到达接收端；线缆故障时，SSPLCR信号发生反射返回发送端；在接收端对SSPLCR信号进行同步、解扩解调，恢复其携带的电力载波信息；在发送端提取SSPLCR故障反射信号，通过相关运算得到电缆故障类型和位置。该方法实现电能输送、数据传输、故障诊断一体化，提升了电能输送和通信系统的可靠性和可维护性。

公开(公告)号：WO2021230430A1

公开(公告)日：2021-11-18

申请号：PCT/KR2020/011822

申请日：2020-09-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： POST, Ernest Rehmatulla

IPC: H04B13/00 ,  H04B1/7075 ,  A61B5/00 ,  H04B1/7093 ,  H04B1/3827

Abstract: A method includes receiving an input via a processor of the computing device. The input corresponds to data to be transmitted. The method further includes encoding the data to generate spreading codes corresponding at least in part to the data. The method further includes mapping the spreading codes to one or more frequency subcarriers of a plurality of frequency subcarriers, generating a transmit signal based at least in part on the one or more frequency subcarriers, and transmitting the transmit signal via an electrode capacitively coupled to a physical body. The transmit signal is transmitted from the electrode through the physical body.

公开(公告)号：WO2015041874A1

公开(公告)日：2015-03-26

申请号：PCT/US2014/054371

申请日：2014-09-05

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDES BARROS, Daniel Jose

IPC: H04B1/7073 ,  H04L7/04 ,  H04W52/02 ,  H04B1/7093

CPC classification number: H04W52/0229 ,  H04B1/7073 ,  H04B1/7093 ,  H04W4/80 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/40

Abstract: Systems and apparatus are disclosed for a target device to detect a trigger from an initiating device. One implementation includes a wireless device configured to correlate a received waveform with a target waveform, compare a result of the correlation to a threshold and output a first signal based on the comparison of the result and the threshold. The apparatus may also be configured to generate a sequence of bits by demodulating at least a portion of the received waveform in response to receiving the first signal, to compare in parallel a plurality of circularly rotated versions of a target sequence of bits with the demodulated sequence of bits, and to combine the results of the comparisons and output a second signal when the combined comparisons indicate that the demodulated sequence of bits corresponds to the target sequence of bits.

Abstract translation: 公开了用于目标设备的检测来自启动设备的触发的系统和设备。 一种实施方式包括被配置为将接收到的波形与目标波形相关联的无线设备，将相关性的结果与阈值进行比较，并且基于结果与阈值的比较来输出第一信号。 该装置还可以被配置为通过响应于接收到第一信号来解调所接收波形的至少一部分来生成比特序列，以将目标比特序列的多个循环版本与解调序列 并且当组合比较指示解调的比特序列对应于目标比特序列时，组合比较的结果并输出第二信号。

公开(公告)号：WO02067518A3

公开(公告)日：2003-03-13

申请号：PCT/US0201997

申请日：2002-01-24

Applicant: MASSACHUSETTS INST TECHNOLOGY

Inventor： ELDAR YONINA C ,  OPPENHEIM ALAN V

IPC: G06K9/62 ,  H04B1/7093 ,  H04B1/7105 ,  H04L25/03 ,  H04B1/707

CPC classification number: H04B1/7093 ,  G06K9/62 ,  H04B1/71052 ,  H04L25/03299

Abstract: The present invention is directed toward an apparatus and method for receiving signals, demodulating the signals and shaping the correlation of the output of a correlation demodulator. The present invention can be used irrespective of whether the received signals have noise components that are Gaussian or non-Gaussian. Moreover, the present invention can be utilized when a predetermined set of received signals is linearly independent or linearly dependent.

Abstract translation: 本发明涉及一种用于接收信号，解调信号和整形相关解调器的输出的相关性的装置和方法。 可以使用本发明，而不管接收的信号是否具有高斯或非高斯的噪声分量。 此外，当预定的一组接收信号是线性独立的或线性相关的时，可以利用本发明。

公开(公告)号：WO0245288A3

公开(公告)日：2003-01-30

申请号：PCT/US0143619

申请日：2001-11-20

Applicant: QUALCOMM INC

Inventor： EASTON KENNETH D ,  BLACK PETER J

IPC: H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04Q7/38

CPC classification number: H04B1/707 ,  H04B1/709 ,  H04B2001/70935

Abstract: A receiver unit includes a first buffer that receives and stores digitized samples at a particular sample rate and a data processor that retrieves segments of digitized samples from the first buffer and processes the retrieved segments with a particular set of parameters values. The data processor is operated based on a processing clock having a frequency that is (e.g., then or more times) higher than the sample rate. Multiple instances of the received signal can be processed by retrieving and processing multiple segments of digitized samples from the first buffer. the receiver unit typically further includes a receiver that receives and processes a transmitted signal to provide the digitized samples and a controller that dispatches tasks for the data processor. The data processor can be designed to include a correlator, a symbol demodulation and combiner, a first accumulator, and a second buffer, or a combination thereof. The correlator despreads the retrieved segments of digitized samples with corresponding segments of PN despreading sequences to provide correlated samples, which are further processed by the symbol demodulation and combiner to provide processed symbols. The second buffer stores the processed symbols, and can be designed to provide de-interleaving of the processed symbols.

Abstract translation: 接收器单元包括以特定采样率接收和存储数字化样本的第一缓冲器，以及从第一缓冲器检索数字化采样的段并且使用特定参数值集处理检索的段的数据处理器。 数据处理器基于具有比采样率高的（例如，或多次）的频率的处理时钟来操作。 可以通过从第一缓冲器检索和处理数字化样本的多个部分来处理接收信号的多个实例。 接收器单元通常还包括接收和处理发射信号以提供数字化样本的接收机以及为数据处理器分派任务的控制器。 数据处理器可以被设计为包括相关器，符号解调和组合器，第一累加器和第二缓冲器，或其组合。 相关器对所取回的数字化样本段进行解扩，以对应的解扩序列段进行解扩，以提供相关样本，由符号解调和组合器进一步处理，以提供处理后的符号。 第二缓冲器存储经处理的符号，并且可以被设计为提供经处理符号的解交织。

公开(公告)号：WO01076115A1

公开(公告)日：2001-10-11

申请号：PCT/JP2001/002637

申请日：2001-03-29

IPC: H03H17/02 ,  H04B1/707 ,  H04B1/7093 ,  H04L7/00 ,  H04J13/04

CPC classification number: H04B1/7093 ,  H04B1/707

Abstract: A method for determining correlation using a matched filter in which despreading operation is performing by fixing received data and scanning a despread code. The despread results are integrated for each of the symbol parts before and after a unique symbol partition corresponding to the phase shift of the spread code. The result of the integration of the first half symbol part is added to the result of the integration of the same symbol corresponding to the same phase shift of the spread code and held as the result of the similar processing executed previously. On the other hand, the result of the integration of the second half symbol part are held temporarily and added to the result of the of the same symbol integration corresponding to the same phase shift of the spread code obtained by executing the next similar processing, thus determining the correlation of a symbol unit.

Abstract translation: 一种使用匹配滤波器确定相关性的方法，其中通过固定接收到的数据并扫描解扩码来进行解扩操作。 在对应于扩展码的相移的唯一符号分区之前和之后，对每个符号部分集成解扩结果。 将前半个符号部分的积分的结果加到对应于扩展码的相同相移的相同符号的积分的结果中，并作为先前执行的类似处理的结果保存。 另一方面，暂时保持第二半符号部分的积分结果，并将其加到对应于通过执行下一个类似处理而获得的扩展码的相同相移的相同符号积分的结果，因此 确定符号单元的相关性。

公开(公告)号：WO01065713A1

公开(公告)日：2001-09-07

申请号：PCT/EP2001/001215

申请日：2001-02-05

IPC: H03H17/06 ,  H03H17/04 ,  H04B1/7093 ,  H04Q7/38 ,  H04B1/707

CPC classification number: H04B1/7093 ,  H03H17/04

Abstract: A signal filter comprises a plurality of adding elements (21), each of which has first and second inputs and an output and is operable to provide an output signal representative of the sum of a pair of input signals. The filter also includes a plurality of delay line elements (22), each delay line element having an input and an output and being operable to delay transfer of an input signal from the input to the output by a predetermined time period. The adding elements (21) and delay line elements (22) are connected in a series such that the output of each adding elements, except the last adding element in the series, is connected to the first input of the next adding element in the series via an associated delay line element, the output of the last adding element in the series being connected to the first input of the first adding element in the series via a delay line element. The second input of the adding elements are connected to receive respective input signals. The filter is used in a CDMA pilot signal searcher.

Abstract translation: 信号滤波器包括多个加法元件（21），每个加法元件具有第一和第二输入和输出，并且可操作以提供表示一对输入信号之和的输出信号。 滤波器还包括多个延迟线元件（22），每个延迟线元件具有输入和输出，并且可操作以将输入信号从输入延迟到输出预定时间段。 加法元件（21）和延迟线元件（22）串联连接，使得除了串联中的最后一个加法元件之外的每个加法元件的输出连接到该系列中的下一个加法元件的第一输入 经由相关联的延迟线元件，串联中的最后一个加法元件的输出通过延迟线元件连接到串联中的第一加法元件的第一输入。 相加元件的第二输入被连接以接收相应的输入信号。 该滤波器用于CDMA导频信号搜索器。

公开(公告)号：WO00065749A1

公开(公告)日：2000-11-02

申请号：PCT/US2000/010855

申请日：2000-04-21

IPC: H04B1/7093 ,  H04B20060101 ,  H04B1/7113 ,  H04B1/7115 ,  H04B7/005 ,  H04B7/216

CPC classification number: H04W52/20 ,  H04B1/7113 ,  H04B2201/70701 ,  H04L25/0224 ,  H04L2027/0046 ,  H04L2027/0065 ,  H04L2027/0093 ,  H04W52/143

Abstract: The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign demodulation circuit for determining the sign of the information symbols in response to the pilot channel symbols. A continuous pilot generator (336) generates a non-punctured pilot channel of predetermined sign from the information symbols and the pilot channel symbols. In a first embodiment, the information sign demodulator further comprises a dot product circuit for calculating a dot product of the pilot channel symbols and the punctured information symbols, and a threshold comparator for comparing the dot product to a predetermined threshold.

Abstract translation: 穿孔导频信道包括穿入预定符号的导频信道符号序列的不确定符号的信息符号。 该装置包括用于响应于导频信道符号确定信息符号的符号的信息符号解调电路。 连续导频发生器（336）从信息符号和导频信道符号生成预定符号的未穿孔导频信道。 在第一实施例中，信息符号解调器还包括用于计算导频信道符号和穿孔信息符号的点积的点积电路，以及用于将点乘积与预定阈值进行比较的阈值比较器。

公开(公告)号：WO00013332A1

公开(公告)日：2000-03-09

申请号：PCT/US1999/020131

申请日：1999-09-01

IPC: H04B1/7093 ,  H04L27/00 ,  H04B1/69

CPC classification number: H04B1/7093 ,  H04L2027/0028 ,  H04L2027/0046

Abstract: A method and apparatus for a spread spectrum matched filter (40) with Doppler correction suitable for using in a RF receiver. A waveform representing Doppler correction values is reduced into a simple Boolean combination that can simply represent the waveform and be built into the processing in the matched filter. Advantages are (i) faster use of the matched filter, resulting in faster signal acquisition, and (ii) lower power consumption because clocking to load signal and/or Doppler correction values is reduced. In particular, received samples can be Doppler corrected for the nominal or mean Doppler shift plus local oscillator error as they are stored. The remaining Doppler shift is relatively small and can be removed by building a relatively few Doppler offsets into the processing logic for each matched filter tap. The Doppler shift can be changed instantly. Doppler signals do not need to be shifted or scanned into the matched filter.

Abstract translation: 一种用于具有多普勒校正的扩频匹配滤波器（40）的方法和装置，其适用于RF接收机中的使用。 表示多普勒校正值的波形被简化为简单的布尔组合，其可以简单地表示波形并被内置到匹配滤波器的处理中。 优点是（i）更快地使用匹配滤波器，从而更快地获得信号，并且（ii）降低功耗，因为降低了负载信号和/或多普勒校正值的时钟。 特别地，接收到的样本可以在存储标准或平均多普勒频移加本地振荡器误差时进行多普勒校正。 剩余的多普勒频移相对较小，并且可以通过将相对较少的多普勒偏移构建到用于每个匹配滤波器抽头的处理逻辑中来去除。 多普勒频移可立即更改。 多普勒信号不需要移动或扫描到匹配滤波器中。

公开(公告)号：WO9702714A3

公开(公告)日：1997-02-13

申请号：PCT/US9611063

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/30

CPC classification number: 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

Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.

Abstract translation: 多址，扩频通信系统通过电信线路处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时发送到 一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及标识用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射机连接到所有调制解调器以将CDM处理的信号与全局导频码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。 每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号，并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率水平的闭环功率控制系统，以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。