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1. 发明授权

US5822318A Method and apparatus for controlling power in a variable rate communication system 失效
标题翻译：用于在可变速率通信系统中控制功率的方法和装置
公开(公告)号：US5822318A
公开(公告)日：1998-10-13
申请号：US283308
申请日：1994-07-29
申请人： Edward G. Tiedemann, Jr. , Klein S. Gilhousen , Joseph P. Odenwalder , Ephraim Zehavi , Jeffrey A. Levin , Charles E. Wheatley, III
发明人： Edward G. Tiedemann, Jr. , Klein S. Gilhousen , Joseph P. Odenwalder , Ephraim Zehavi , Jeffrey A. Levin , Charles E. Wheatley, III
IPC分类号： H04B7/00 , H04B7/005 , H04B7/26 , H04L1/00 , H04L1/08 , H04Q7/30
CPC分类号： H04W52/265 , H04L1/0002 , H04L1/0014 , H04L1/0021 , H04L1/0025 , H04L1/08 , H04W52/267 , Y02B60/50
摘要： A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote station controls the transmission power of a second remote station by transmitting a rate dependent power control signal to the second remote communication station. Since only the second communication knows its transmission rate a priori, it must determine its course of action in accordance with both the received power control signal and the knowledge of its transmission rate.
摘要翻译：公开了一种用于控制可变速率通信系统中的发射功率的方法和装置。所公开的方法提供了一种闭环功率控制方法。第一远程站通过向第二远程通信站发送与速率相关的功率控制信号来控制第二远程站的发射功率。由于只有第二通信先验地知道其传输速率，所以它必须根据接收到的功率控制信号和其传输速率的知识确定其行动过程。

2. 发明授权

US5603096A Reverse link, closed loop power control in a code division multiple access system 失效
标题翻译：反向链路，闭环功率控制在码分多址系统中
公开(公告)号：US5603096A
公开(公告)日：1997-02-11
申请号：US272484
申请日：1994-07-11
申请人： Klein S. Gilhousen , Charles E. Wheatley, III , Jeffrey A. Levin
发明人： Klein S. Gilhousen , Charles E. Wheatley, III , Jeffrey A. Levin
IPC分类号： H04B7/005 , H04B7/26 , H04W24/00 , H04W28/22 , H04W52/00 , H04W52/08 , H04W52/12 , H04W52/26 , H04W74/00 , H04B7/00
CPC分类号： H04W52/267 , H04W24/00 , H04W28/22 , H04W52/08 , H04W52/12 , H04W74/00
摘要： The process of the present invention enables a mobile radiotelephone to operate at a 100% duty cycle while providing closed loop power control. The base station measures the signal to noise ratio of the signal from the mobile and compares that SNR with the SNR threshold values the base station has for each data rate the mobile is capable of transmitting. The base station then generates power control commands to instruct the mobile to change its power depending on the outcome of the comparisons.
摘要翻译：本发明的过程使移动无线电话机能够以100％的占空比工作，同时提供闭环功率控制。基站测量来自移动台的信号的信噪比，并将该SNR与移动台能够发送的每个数据速率的基站具有的SNR阈值进行比较。基站然后产生功率控制命令以指示移动台根据比较的结果来改变其功率。

3. 发明授权

US5812938A Reverse link, closed loop power control in a code division multiple access system 失效
标题翻译：反向链路，闭环功率控制在码分多址系统中
公开(公告)号：US5812938A
公开(公告)日：1998-09-22
申请号：US719296
申请日：1996-09-19
申请人： Klein S. Gilhousen , Charles E. Wheatley, III , Jeffrey A. Levin
发明人： Klein S. Gilhousen , Charles E. Wheatley, III , Jeffrey A. Levin
IPC分类号： H04B7/005 , H04B7/26 , H04W24/00 , H04W28/22 , H04W52/00 , H04W52/08 , H04W52/12 , H04W52/26 , H04W74/00 , H04B7/00
CPC分类号： H04W52/267 , H04W24/00 , H04W28/22 , H04W52/08 , H04W52/12 , H04W74/00
摘要： The process of the present invention enables a mobile radiotelephone to operate at a 100% duty cycle while providing closed loop power control. The base station measures the signal to noise ratio of the signal from the mobile and compares that SNR with the SNR threshold values the base station has for each data rate the mobile is capable of transmitting. The base station then generates power control commands to instruct the mobile to change its power depending on the outcome of the comparisons.
摘要翻译：本发明的过程使移动无线电话机能够以100％的占空比工作，同时提供闭环功率控制。基站测量来自移动台的信号的信噪比，并将该SNR与移动台能够发送的每个数据速率的基站具有的SNR阈值进行比较。基站然后产生功率控制命令以指示移动台根据比较的结果来改变其功率。

4. 发明授权

US6167056A Access channel slot sharing 有权
标题翻译：访问通道槽共享
公开(公告)号：US6167056A
公开(公告)日：2000-12-26
申请号：US189357
申请日：1998-11-09
申请人： David S. Miller , Rajiv Vijayan , Ephraim Zehavi , Jeffrey A. Levin
发明人： David S. Miller , Rajiv Vijayan , Ephraim Zehavi , Jeffrey A. Levin
IPC分类号： H04B1/707 , H04B7/185 , H04B7/216 , H04B7/26 , H04J3/06 , H04L7/00 , H04L27/30
CPC分类号： H04B7/18532 , H04B1/7077 , H04B1/708 , H04B7/216 , H04B7/2637
摘要： The present invention is a system and method for increasing user capacity on a slotted random access channel in a spread spectrum communications system by using a multi-part access probe. First and second parts of the access probe are modulated using a short PN code sequence, and the entire access probe is modulated using a long PN code sequence. Information to be transmitted by the access probe is modulated on the second part of the access probe, and the access probe is transmitted so that the first part of the probe falls within the boundaries of an access channel slot. In one embodiment, time slots in access channels used for access signal reception are made the length of the first part. In a further embodiment, time slots in a plurality of adjacent access channels used for access signal reception may be longer than said first part but are offset in time from each other by the length or period of the first part.
摘要翻译：本发明是一种通过使用多部分接入探针来增加扩频通信系统中的时隙随机接入信道上的用户容量的系统和方法。使用短PN码序列对接入探测器的第一和第二部分进行调制，并且使用长PN码序列调制整个接入探测器。由接入探针发送的信息在接入探针的第二部分被调制，并且发送接入探针，使得探测器的第一部分落在接入信道时隙的边界内。在一个实施例中，用于访问信号接收的接入信道中的时隙被做成第一部分的长度。在另一个实施例中，用于访问信号接收的多个相邻访问信道中的时隙可以比所述第一部分更长，但是在时间上彼此偏移了第一部分的长度或周期。

5. 发明授权

US08644264B2 Method and apparatus for canceling pilot interference in a wireless communication system 有权
标题翻译：用于消除无线通信系统中的导频干扰的方法和装置
公开(公告)号：US08644264B2
公开(公告)日：2014-02-04
申请号：US12900394
申请日：2010-10-07
申请人： Alessandro Vanelli Coralli , Henry David Pfister , Jilei Hou , John Edward Smee , Roberto Padovani , Brian K. Butler , Jeffrey A. Levin , Thomas B. Wilborn , Paul E. Bender
发明人： Alessandro Vanelli Coralli , Henry David Pfister , Jilei Hou , John Edward Smee , Roberto Padovani , Brian K. Butler , Jeffrey A. Levin , Thomas B. Wilborn , Paul E. Bender
IPC分类号： H03D1/04
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.
摘要翻译：用于估计和消除无线（例如，CDMA）通信系统中的导频干扰的方法和系统。在一种方法中，最初处理包括多个信号实例（每个包括导频）的接收信号以提供数据样本。每个信号实例的导频干扰可以通过用信号实例的扩展序列解扩数据样本来估计，对解扩数据进行信道化以提供导频符号，对导频符号进行滤波以估计信号实例的信道响应，并将估计信道响应与扩展序列。由多个干扰多径导致的导频干扰估计被累加以导出总导频干扰，其从数据样本中减去以提供导频取消的数据采样。然后处理这些样本以便为接收信号中的至少一个（期望的）信号实例中的每一个导出解调数据。

6. 发明授权

US08433665B2 Methods and systems for three-memristor synapse with STDP and dopamine signaling 有权
标题翻译：使用STDP和多巴胺信号传导的三忆阻器突触的方法和系统
公开(公告)号：US08433665B2
公开(公告)日：2013-04-30
申请号：US12831594
申请日：2010-07-07
申请人： Yi Tang , Jeffrey A. Levin , Vladimir Aparin , Venkat Rangan
发明人： Yi Tang , Jeffrey A. Levin , Vladimir Aparin , Venkat Rangan
IPC分类号： G06F15/18
CPC分类号： G06N3/0635 , G06N3/049
摘要： The present disclosure proposes implementation of a three-memristor synapse where an adjustment of synaptic strength is based on Spike-Timing-Dependent Plasticity (STDP) with dopamine signaling.
摘要翻译：本公开提出了三忆阻突触的实施，其中突触强度的调整基于具有多巴胺信号传导的尖峰时间依赖性可塑性（STDP）。

7. 发明授权

US07190749B2 Method and apparatus for canceling pilot interference in a wireless communication system 有权
标题翻译：用于消除无线通信系统中的导频干扰的方法和装置
公开(公告)号：US07190749B2
公开(公告)日：2007-03-13
申请号：US09974935
申请日：2001-10-10
申请人： Jeffrey A. Levin , Thomas B. Wilborn , Brian K. Butler , Paul E. Bender
发明人： Jeffrey A. Levin , Thomas B. Wilborn , Brian K. Butler , Paul E. Bender
IPC分类号： H03D1/04 , H04B1/707
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： Techniques for canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence to provide the estimated pilot interference. The pilot interference estimates due to all interfering multipaths are combined to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.
摘要翻译：用于在无线（例如CDMA）通信系统中消除导频干扰的技术。在一种方法中，最初处理包括多个信号实例（每个包括导频）的接收信号以提供数据样本。每个信号实例的导频干扰可以通过用信号实例的扩展序列解扩数据样本来估计，对解扩数据进行信道化以提供导频符号，对导频符号进行滤波以估计信号实例的信道响应，并将估计信道响应与扩展序列提供估计的导频干扰。由于所有干扰多径导致的导频干扰估计被组合以导出总导频干扰，其从数据样本中减去以提供导频取消的数据样本。然后处理这些样本以便为接收信号中的至少一个（期望的）信号实例中的每一个导出解调数据。

8. 发明授权

US06229841B1 Method and apparatus for energy estimation in a wireless receiver capable of receiving multiple instances of a common signal 有权
标题翻译：能够在能够接收公共信号的多个实例的无线接收机中进行能量估计的方法和装置
公开(公告)号：US06229841B1
公开(公告)日：2001-05-08
申请号：US09258086
申请日：1999-02-25
申请人： Jeffrey A. Levin , Christopher C. Riddle , Thomas B. Sherman
发明人： Jeffrey A. Levin , Christopher C. Riddle , Thomas B. Sherman
IPC分类号： H04B1707
CPC分类号： H04B1/7115 , H04B1/712
摘要： In a remote unit receiver capable of demodulating a plurality of signal instances corresponding to a singe remote unit transmitted signal, a first instance of a signal is demodulated to produce a first set of energy values corresponding to a set of possible data values of the signal. A second instance of the signal is demodulated to produce a second set of energy values corresponding to the set of possible data values. The first and the second sets of energy values are then combined to determine a combined set of energy values. A first estimate of a most likely transmitted data value is determined based upon the combined set of energy values An energy level of the first instance is determined based upon the energy value within the first set of energy values corresponding to the first estimate of the most likely transmitted data value.
摘要翻译：在能够解调与单个远程单元发送信号相对应的多个信号实例的远程单元接收机中，解调信号的第一实例以产生对应于信号的一组可能数据值的第一组能量值。解调信号的第二实例以产生对应于该组可能数据值的第二组能量值。然后组合第一和第二组能量值以确定组合的能量值集合。基于组合的能量值来确定最可能的传输数据值的第一估计。基于能够在第一组能量值内的能量值来确定第一实例的能级，所述能量值对应于最可能的第一估计值传输数据值。

9. 发明授权

US5867527A Method of searching for a bursty signal 失效
标题翻译：搜索突发信号的方法
公开(公告)号：US5867527A
公开(公告)日：1999-02-02
申请号：US810744
申请日：1997-03-04
申请人： Noam A. Ziv , Roberto Padovani , Jeffrey A. Levin , Kenneth D. Easton
发明人： Noam A. Ziv , Roberto Padovani , Jeffrey A. Levin , Kenneth D. Easton
IPC分类号： H04L1/02 , H04B1/707 , H04B7/26 , H04J11/00 , H04J13/00 , H04L27/30 , H04Q7/20 , H04B15/00 , H04K1/00
CPC分类号： H04B1/70752 , H04B1/707 , H04B1/70756 , H04B7/2628 , H04J13/0048 , H04B1/7113 , H04B1/7117 , H04B2201/70703
摘要： An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element reassignment. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.
摘要翻译：用于扩展频谱通信系统的调制解调器中的集成搜索处理器缓冲器接收采样并利用对来自缓冲器的连续偏移量进行操作的时间分片变换处理器。搜索处理器自主地通过由微处理器指定的搜索参数集配置的搜索进行搜索，该搜索参数集可以包括要搜索的天线组，要搜索的搜索窗口的起始偏移和宽度以及要累积的沃尔什符号的数量结果在每个偏移。搜索处理器计算每个偏移处的相关能量，并呈现搜索中发现的用于解调元件重新分配的最佳路径的汇总报告。搜索是以线性方式进行的，与在任何给定时间发送信号的概率无关。

10. 发明授权

US5590069A Method and apparatus for providing ROM in an integrated circuit having update through single substance layer modification capability 失效
公开(公告)号：US5590069A
公开(公告)日：1996-12-31
申请号：US324433
申请日：1994-10-17
申请人： Jeffrey A. Levin
发明人： Jeffrey A. Levin
IPC分类号： G11C17/12 , G11C17/00
CPC分类号： G11C17/12
摘要： A ROM circuit that can be modified via the alteration of any one of a set of substance layers is described. The ROM circuit includes a set of ROM cells each of which provide one bit of data used to construct the fixed binary number. Each ROM cell includes a set of circuits that can be placed in either a first or second state via modification of a single substance layer that is different for each circuit, and generates a signal in a logic state that depends on whether the number of circuits in the first state is odd or even. When a design revision occurs the state of one of the circuits from the set of circuits is modified to update the fixed binary number using one of the substance layer already being modified during the course of the design revision.

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