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1. 发明申请

WO0058747A3 UNDERWATER COMMUNICATION METHOD, DEVICE, AND SYSTEM UTILIZING A DOPPLER FREQUENCY SHIFT 审中-公开
标题翻译：水下通信方法，设备和系统利用多普勒频移
公开(公告)号：WO0058747A3
公开(公告)日：2001-03-08
申请号：PCT/IL0000167
申请日：2000-03-16
申请人： WULICH WAVE LTD , WULICH DOV , RAKHOVITZ LEO
发明人： WULICH DOV , RAKHOVITZ LEO
IPC分类号： G01S3/802
CPC分类号： G01S3/8022
摘要： An underwater communication method, device, and system that enables bi-directional communication between and among under-water divers. In accordance with the present method, messages may be transmitted and received between and among the divers in a network and/or between divers and a diving boat, buoy, or other reference point. The present invention also permits one or more divers to receive a homing signal and to move toward the source of that signal using an acquisition and tracking feature and functionality that utilizes a Doppler frequency shift and preferably a compass to determine the direction of the source of the signal. The present method also enables a diver in distress to broadcast a distress signal (i.e., SOS) that is received by every other diver within a predetermined distance from the distressed diver. The divers receiving the distress signal are then able to locate and rescue the distressed diver using the acquisition and tracking feature and functionality.
摘要翻译：水下潜水员之间的双向通信的水下通信方法，设备和系统。根据本方法，可以在网络中和/或潜水员与潜水艇，浮标或其他参考点之间和/或潜水员之间和之间发送和接收消息。本发明还允许一个或多个潜水员接收归巢信号并且使用采集和跟踪特征和功能向着该信号源移动，该特征和功能利用多普勒频移并且优选地使用罗盘来确定源的方向信号。本方法还使得遇险潜水员能够在遇难的潜水员预定距离内广播由每隔一个潜水员接收的遇险信号（即SOS）。接收遇险信号的潜水员然后能够使用采集和跟踪特征和功能来定位和救援遇难的潜水员。

2. 发明申请

WO2011055319A1 USING MAXIMAL SUM-RATE MUTUAL INFORMATION TO OPTIMIZE JCMA CONSTELLATIONS 审中-公开
标题翻译：使用最大的相对速率信息来优化JCMA协议
公开(公告)号：WO2011055319A1
公开(公告)日：2011-05-12
申请号：PCT/IB2010/054991
申请日：2010-11-04
申请人： SIGNEXT WIRELESS LTD. , WULICH, Dov , TSOURI, Gill, Raphael , DABORA, Ron
发明人： WULICH, Dov , TSOURI, Gill, Raphael , DABORA, Ron
IPC分类号： H04J1/00
CPC分类号： H04L27/3461
摘要： A method and a system for calculating a JCMA constellation for use in a JCMA communication system where the method includes a step of using maximum sum-rate mutual information criterion to select an optimal JCMA constellation for the number of transmitters N, SNR and modulation schemes used by the transmitters.
摘要翻译：一种用于计算在JCMA通信系统中使用的JCMA星座图的方法和系统，其中所述方法包括使用最大和速互相信息准则来选择用于发射机数量N的最佳JCMA星座，所使用的SNR和调制方案由发射机。

3. 发明申请

WO2013005214A1 COMBINED POWER LOADING AND PAPR REDUCTION FOR OFDM WITH ERASURE DECODER 审中-公开
标题翻译：具有擦除解码器的OFDM的组合功率负载和PAPR减少
公开(公告)号：WO2013005214A1
公开(公告)日：2013-01-10
申请号：PCT/IL2012/050236
申请日：2012-07-04
申请人： BEN GURION UNIVERSITY OF THE NEGEV, RESEARCH AND DEVELOPMENT AUTHORITY , HALFON, Rafi , WULICH, Dov
发明人： HALFON, Rafi , WULICH, Dov
IPC分类号： H04W52/00 , H04W52/24 , H04W52/34 , H04J11/00
CPC分类号： H04W52/34 , H04W52/24
摘要： System and method for combining equal Signal to Noise Ratio (SNR) Power-Loading (PL) with Hard Decision Erase (HDE) decoder in Orthogonal Frequency-Division Multiplexing (OFDM) using Bit-Interleaved Coded Modulation (BICM) communication system. An SNR threshold is calculated such that BER in the receiver is substantially minimized. Zero power level is assigned to sub-carriers having SNR before PL that is lower than SNR threshold, and a power level is assigned to other sub-carriers, such that SNR after PL seen at the receiver is substantially equal across the sub-carriers to which a non-zero power level was assigned. The HDE decoder at the receiver erases the bits with substantially zero energy level. Additionally, TR based PAPR reduction is combined with the equal SNR PL and HDE decoder. In the later case, sub-carriers having SNR before PL that is lower than SNR threshold are used as reserved tones.
摘要翻译：使用比特交织编码调制（BICM）通信系统在正交频分复用（OFDM）中组合硬判决擦除（HDE）解码器的等信号噪声比（SNR）功率负载（PL）的系统和方法。计算SNR阈值，使得接收机中的BER基本上最小化。将零功率电平分配给具有低于SNR阈值的PL之前的SNR的子载波，并且功率电平被分配给其他子载波，使得在接收机处看到的PL之后的SNR在子载波之间基本相等分配了非零功率电平。在接收机处的HDE解码器擦除基本上零能级的位。此外，基于TR的PAPR减少与相等的SNR PL和HDE解码器组合。在后一种情况下，将具有低于SNR阈值的PL之前的SNR的子载波用作保留音调。

4. 发明申请

WO2011064783A1 SYSTEM AND METHOD FOR REDUCING BIT-ERROR-RATE IN ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING 审中-公开
标题翻译：降低正交频分复用中的位错误率的系统和方法
公开(公告)号：WO2011064783A1
公开(公告)日：2011-06-03
申请号：PCT/IL2010/001000
申请日：2010-11-30
申请人： BEN GURION UNIVERSITY OF THE NEGEV, RESEARCH AND DEVELOPMENT AUTHORITY , WULICH, Dov
发明人： WULICH, Dov
IPC分类号： H04W4/00
CPC分类号： H04W52/346 , H04L5/0046 , H04W52/20
摘要： System and method for reducing BER in OFDM based communication system. A cost function relating the power partition coefficients and the average power emitted by the linear power amplifier at the transmitter during quasistatic periods of the channel may be minimized, solved or estimated, based on the received channel partial CSI, and on knowledge of the linear power amplifier gain and linear dynamic range, to get power partition coefficients. The total available power may be divided among the subcarriers according to the resultant power partition coefficients. Additionally, the OFDM signal may amplified by a variable gain calculated based on the resultant power partition coefficients.
摘要翻译：基于OFDM的通信系统降低BER的系统和方法。可以基于所接收的信道部分CSI以及关于线性功率的知识，将功率分配系数和线性功率放大器在发射机发射的平均功率相关联的成本函数最小化，解决或估计放大器增益和线性动态范围，得到功率分配系数。可以根据所得到的功率分配系数在子载波之间划分总可用功率。此外，OFDM信号可以通过基于所得到的功率分配系数计算的可变增益放大。

5. 发明申请

WO2007039908A3 JOINT CONSTELLATION MULTIPLE ACCESS 审中-公开
标题翻译：联合协调多种访问
公开(公告)号：WO2007039908A3
公开(公告)日：2009-04-09
申请号：PCT/IL2006001166
申请日：2006-10-05
申请人： SIGNEXT COMM TECHNOLOGIES LTD , TSOURI GIL RAFAEL , WULICH DOV
发明人： TSOURI GIL RAFAEL , WULICH DOV
IPC分类号： H04L27/00 , H04B7/204 , H04B7/212 , H04B7/216 , H04J3/02 , H04L5/12
CPC分类号： H04L5/02 , H04L5/023 , H04L27/3405 , H04W52/0206 , H04W52/0216 , H04W52/0219 , H04W52/225 , H04W52/367 , Y02D70/00 , Y02D70/142 , Y02D70/146
摘要： A method for communication includes defining N respective symbol constellations in a signal space for N transmitters (24), N(2, subject to a predetermined power constraint, so as to produce a joint constellation including superpositions of symbols selected from the N symbol constellations. Data is transferred from the N transmitters by simultaneously transmitting from the N transmitters N respective symbols selected respectively from the N symbol constellations. A composite symbol including a superposition of the N transmitted symbols is received. The received composite symbol is demodulated using the joint constellation so as to reconstruct the data transferred from the N transmitters.
摘要翻译：一种用于通信的方法包括在N个发射机（24），N（2）的信号空间中定义N个相应的符号星座，其受到预定的功率约束，从而产生包括从N个符号星座中选择的符号的叠加的联合星座。通过从N个发送机N中分别从N个符号星座中分别选择的各符号同时从N个发射机传送数据，接收包含N个发送符号的叠加的复合符号，使用联合星座解调所接收的复合符号，以重建从N个发射机传送的数据。

6. 发明申请

WO2007072487A1 SYSTEM AND METHOD FOR SYNCHRONIZATION OF A COMMUNICATION NETWORK 审中-公开
标题翻译：用于通信网络同步的系统和方法
公开(公告)号：WO2007072487A1
公开(公告)日：2007-06-28
申请号：PCT/IL2006/001467
申请日：2006-12-21
申请人： IPCLOCK LTD. , WULICH, Dov , GOREN, Motti
发明人： WULICH, Dov , GOREN, Motti
IPC分类号： H04J3/06
CPC分类号： H04J3/0632
摘要： There is provided a synchronization system for a communication network, including an optimal frequency estimator based on a vector of time stamps constituted by an observation vector that estimates the period of incoming packets. A method for synchronization in a communication network is also provided.
摘要翻译：提供了一种用于通信网络的同步系统，其包括基于由估计输入分组的周期的观测向量构成的时间戳矢量的最佳频率估计器。还提供了一种在通信网络中进行同步的方法。

7. 发明申请

WO2007039908A2 JOINT CONSTELLATION MULTIPLE ACCESS 审中-公开
标题翻译：联合协调多种访问
公开(公告)号：WO2007039908A2
公开(公告)日：2007-04-12
申请号：PCT/IL2006/001166
申请日：2006-10-05
申请人： SIGNEXT COMMUNICATION TECHNOLOGIES LTD. , TSOURI, Gil, Rafael , WULICH, Dov
发明人： TSOURI, Gil, Rafael , WULICH, Dov
IPC分类号： B32B15/08
CPC分类号： H04L5/02 , H04L5/023 , H04L27/3405 , H04W52/0206 , H04W52/0216 , H04W52/0219 , H04W52/225 , H04W52/367 , Y02D70/142 , Y02D70/146
摘要： A method for communication includes defining N respective symbol constellations in a signal space for N transmitters (24), N(2, subject to a predetermined power constraint, so as to produce a joint constellation including superpositions of symbols selected from the N symbol constellations. Data is transferred from the N transmitters by simultaneously transmitting from the N transmitters N respective symbols selected respectively from the N symbol constellations. A composite symbol including a superposition of the N transmitted symbols is received. The received composite symbol is demodulated using the joint constellation so as to reconstruct the data transferred from the N transmitters.
摘要翻译：一种用于通信的方法包括在N个发射机（24），N（2）的信号空间中定义N个相应的符号星座，其受到预定的功率约束，从而产生包括从N个符号星座中选择的符号的叠加的联合星座。通过从N个发送机N中分别从N个符号星座中分别选择的各符号同时从N个发射机传送数据，接收包含N个发送符号的叠加的复合符号，使用联合星座解调所接收的复合符号，以重建从N个发射机传送的数据。

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