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公开(公告)号：US5191462A
公开(公告)日：1993-03-02
申请号：US534623
申请日：1990-05-11
CPC分类号： H04L25/061 , H03K5/088 , H04L25/066
摘要： Signal distortion in fiber optic systems is compensated for by forming decisions as to the transmitted information as a joint function of the received signal and of a feedback signal. The latter, in turn, is a function of decisions made for at least one signal transmitted over the fiber. The feedback signal determines the value of a threshold to which the received signal is compared in order to generate the decisions.
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2.发明授权
公开(公告)号：US5388088A
公开(公告)日：1995-02-07
申请号：US862398
申请日：1992-04-02
IPC分类号： G02B6/293 , G02B27/28 , H04B10/02 , H04B10/158 , H04J14/00 , H04J14/04 , H04J14/06 , H04B10/00
CPC分类号： H04J14/06 , H04B10/697
摘要： Transmission capacity of an optical fiber is increased by transmitting two optical signals of orthogonal polarizations through the fiber and distinguishing the signals from one another at the receiver by appropriately weighting polarization components representative of the transmitted signals. The weighted polarization components are summed to provide two output electrical signals that are proportional in magnitude to the two transmitted optical signals. Appropriate weighting of the signals eliminates cross-channel interference and maximizes the signal to noise ratio. Signals of arbitrary received polarizations are detected and separated from one another.
摘要翻译： 通过传输两个通过光纤的正交偏振光信号来增加光纤的传输容量，并通过适当地加权表示发射信号的偏振分量来区分接收机处的信号。 将加权偏振分量相加以提供两个输出电信号，其幅度与两个发送的光信号成比例。 信号的适当加权消除了跨信道干扰并使信噪比最大化。 任意接收极化的信号被检测并彼此分离。
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公开(公告)号：US5299047A
公开(公告)日：1994-03-29
申请号：US862389
申请日：1992-04-02
申请人： Sanjay Kasturia , Jack H. Winters
发明人： Sanjay Kasturia , Jack H. Winters
IPC分类号： G02B6/00 , H04B10/135 , H04B10/18 , H04J14/00 , H04J14/04 , H04J14/06 , H04B10/04 , H04B10/06
CPC分类号： H04B10/25 , H04B10/2569
摘要： Higher information rates are achieved in lightwave communication systems by using optical signals of different polarizations to represent data as ternary digits. Each ternary digit assumes a value, for example, of either zero, logic 1 (e.g., an amplitude of one unit) on a first polarization, or logic 1 on a second polarization. The ternary digits are transmitted to a receiver through a single optical fiber by modulating the optical signals in time with one of these two polarizations or zero. The receiver determines the value of each ternary digit by determining that the received optical signal has a value of either zero or logic one on a particular one of the two polarizations.
摘要翻译： 在光波通信系统中通过使用不同极化的光信号来表示数据作为三进制数字，实现更高的信息速率。 每个三进制数字假定在第一偏振上为零，逻辑1（例如，一个单位的振幅）或第二极化处的逻辑1的值。 通过单个光纤将三进制数字传输到接收机，通过以这两个极化之一或零来及时调制光信号。 接收机通过确定接收到的光信号在两个极化中的特定一个上具有零或逻辑1的值来确定每个三进制数的值。
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公开(公告)号：US5119196A
公开(公告)日：1992-06-02
申请号：US542612
申请日：1990-06-25
IPC分类号： H04N5/21
CPC分类号： H04N5/211
摘要： Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.
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5.发明授权System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array 有权一种用于在包括自适应阵列的无线通信系统中选择传输信道的系统和方法公开(公告)号：US08855081B2
公开(公告)日：2014-10-07
申请号：US13269904
申请日：2011-10-10
CPC分类号： H04W72/08 , H04B7/0632 , H04B7/08 , H04B7/0805 , H04B7/084 , H04B7/0857
摘要： A method for establishing wireless communication between a transmitter and a receiver in a wireless communication system is disclosed. The receiver includes an adaptive array that has at least two antennas. Each antenna receives a signal and produces a received signal. The transmitter includes at least two transmission channels for communicating the signal from the transmitter to the receiver. The wireless communication system suppresses interference at the receiver by applying an interference suppression technique when combining the received signals. The selection of a channel at the transmitter is based on the channel performance at the receiver for each transmission channel. The channel performance is based on a combining technique different from the interference suppression technique.
摘要翻译： 公开了一种用于在无线通信系统中的发射机和接收机之间建立无线通信的方法。 接收机包括具有至少两个天线的自适应阵列。 每个天线接收一个信号并产生接收到的信号。 发射机包括用于将来自发射机的信号传送到接收机的至少两个传输信道。 无线通信系统通过在组合接收到的信号时应用干扰抑制技术来抑制接收机的干扰。 在发射机处的信道的选择是基于每个传输信道在接收机处的信道性能。 信道性能是基于与干扰抑制技术不同的组合技术。
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6.发明授权System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array 有权一种用于在包括自适应阵列的无线通信系统中选择传输信道的系统和方法公开(公告)号：US07133380B1
公开(公告)日：2006-11-07
申请号：US09781445
申请日：2001-02-13
CPC分类号： H04W72/08 , H04B7/0632 , H04B7/08 , H04B7/0805 , H04B7/084 , H04B7/0857
摘要： A method for establishing wireless communication between a transmitter and a receiver in a wireless communication system. The receiver includes an adaptive array that has at least two antennas. Each antenna receives a signal and produces a received signal. The transmitter includes at least two transmission channels for communicating the signal from the transmitter to the receiver. The wireless communication system suppresses interference at the receiver by applying an interference suppression technique when combining the received signals. The selection of a channel at the transmitter is based on the channel performance at the receiver for each transmission channel. The channel performance is based on a combining technique different from the interference suppression technique.
摘要翻译： 一种用于在无线通信系统中在发射机和接收机之间建立无线通信的方法。 接收机包括具有至少两个天线的自适应阵列。 每个天线接收一个信号并产生接收到的信号。 发射机包括用于将来自发射机的信号传送到接收机的至少两个传输信道。 无线通信系统通过在组合接收信号时应用干扰抑制技术来抑制接收机的干扰。 在发射机处的信道的选择是基于每个传输信道在接收机处的信道性能。 信道性能是基于与干扰抑制技术不同的组合技术。
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公开(公告)号：US5862457A
公开(公告)日：1999-01-19
申请号：US576421
申请日：1995-12-21
申请人： Jack H. Winters
发明人： Jack H. Winters
CPC分类号： H04B1/0483 , H04L27/2621 , H04L27/2626 , H04B2001/0425
摘要： A multiplicity of baseband input signals are supplied to a signal processor which functions to modify the input signals such that when the modified signals modulate corresponding multiple carrier wave signals which are combined to produce a composite signal which is applied to the input of an amplifier, the "peaking" at the input to the amplifier and the resultant intermodulation at the output of the amplifier are reduced. In response to the application of the baseband input signals, the signal processor determines the extent of peaking and modifies at least one of the phase and amplitude of the input signals. In one embodiment of the invention, a block of data representing the input signals over a time slot is supplied to the signal processor which then generates a fixed phase shift over the time slot. In another embodiment of the invention, a block of data representing input signals is applied to a signal processor which then determines the worst case peaking and the time of their occurrence. The signal processor then generates phase shifts which change very gradually, thereby reducing sharp peaking at the input to the amplifier at selected times without significantly distorting the signal.
摘要翻译： 多个基带输入信号被提供给信号处理器，该信号处理器用于修改输入信号，使得当修改的信号调制相应的多个载波信号时，这些信号被组合以产生施加到放大器的输入的复合信号， 在放大器的输入处“峰值”，并且在放大器的输出处产生的互调减小。 响应于基带输入信号的应用，信号处理器确定峰值的程度并修改输入信号的相位和幅度中的至少一个。 在本发明的一个实施例中，表示时隙上的输入信号的数据块被提供给信号处理器，信号处理器然后在时隙上产生固定的相移。 在本发明的另一个实施例中，表示输入信号的数据块被施加到信号处理器，信号处理器然后确定最坏情况下的峰值和它们发生的时间。 信号处理器然后产生相移变化非常缓慢，从而在选定的时间减少输入到放大器的尖峰，而不会使信号明显失真。
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公开(公告)号：US08706131B2
公开(公告)日：2014-04-22
申请号：US12487054
申请日：2009-06-18
申请人： Jack H. Winters
发明人： Jack H. Winters
CPC分类号： G01S5/0027 , G01S5/0294 , G01S19/48 , G08G1/20 , H04L1/0001 , H04W36/245 , H04W36/32 , H04W60/04
摘要： Described technologies are generally related to predicting future mobile device locations and using the predictive information to optimize mobile communications service parameters. Mobile device locations may be predicted using real-time device location information, destination information, and location history. Predicted location information for a given device, and possibly other devices as well, may be used to adjust mobile communications service parameters such as handoffs, channel assignment, multipath fading response parameters, data rates, transmission modes, opportunistic scheduling parameters, location-based services, and location update rates.
摘要翻译： 描述的技术通常与预测未来的移动设备位置和使用预测信息来优化移动通信服务参数有关。 可以使用实时设备位置信息，目的地信息和位置历史来预测移动设备位置。 可以使用给定设备以及可能的其他设备的预测位置信息来调整移动通信服务参数，例如切换，信道分配，多径衰落响应参数，数据速率，传输模式，机会调度参数，基于位置的服务 和位置更新率。
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公开(公告)号：US4789983A
公开(公告)日：1988-12-06
申请号：US22255
申请日：1987-03-05
申请人： Anthony Acampora , Jack H. Winters
发明人： Anthony Acampora , Jack H. Winters
摘要： The present invention relates to a wideband communication network using wireless radio transmissions either on a stand-alone basis or to supplement a hard-wired network. The exemplary network comprises (a) a plurality of transceivers associated with separate users of the network; (b) optionally at least one concentrator associated with certain separate subgroups of wireless and possibly hard-wired transceivers for providing duplex operation; and (c) a central node (i) capable of providing both duplex communications directly via a radio channel using radio links with certain subgroups of the transceivers and via a hard-wired connection with each optional concentrator, and (ii) for polling the needs of all transceivers and directing all packets of information from active transceivers through the central node and to the destined transceivers during each frame period. The network also preferably includes diversity and resource sharing techniques to provide added protection against channel impairments on an as-needed basis.
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公开(公告)号：US4639914A
公开(公告)日：1987-01-27
申请号：US679067
申请日：1984-12-06
申请人： Jack H. Winters
发明人： Jack H. Winters
IPC分类号： H04J11/00 , H04B7/005 , H04B7/26 , H04B15/00 , H04W52/22 , H04W52/24 , H04W52/42 , H04W84/16 , H04J3/12 , H04B1/00 , H04Q7/00
CPC分类号： H04W52/228 , H04W52/24 , H04W52/42 , H04W84/16
摘要： A wireless PBX or LAN system is disclosed that allows multiple, simultaneous users per channel for communication between a base station and a plurality of remote terminals by a combination of adaptive signal processing arrays using optimum combining at the base station for interference suppression and separation of desired signals, adaptive power control at the remote terminals to keep interference at acceptable levels, and adaptive retransmission with time division in the direction from the base station to the remote terminals for communication therebetween including sending power control information to the remote terminals. The adaptive signal processing arrays have a plurality of antennas at the base station, permitting a plurality of users in any one channel. If after adaptation a user's signal cannot be received adequately, the user is dynamically reassigned to a different channel. Interference is minimized by keeping the signals transmitted from and received at the base station at the same power level. The received signals are kept at the same power level by extracting information about the power level of the signals received at the base station and by sending power control bits back to the corresponding remote terminal so that the signal level from the remote terminal may be adjusted either up or down until the power level of each of the signals received at the base station is at the same level. The transmitted signals are kept at the same power level by adaptive retransmission with time division.
摘要翻译： 公开了一种无线PBX或LAN系统，其允许每个通道的多个同时用户通过组合自适应信号处理阵列在基站和多个远程终端之间进行通信，所述自适应信号处理阵列在基站处使用最佳组合来进行干扰抑制和分离期望的 信号，远程终端的自适应功率控制以将干扰保持在可接受的水平，以及在从基站到远程终端的方向上进行时分的自适应重传，包括向远程终端发送功率控制信息。 自适应信号处理阵列在基站具有多个天线，允许任何一个信道中的多个用户。 如果在适应之后，用户的信号不能被充分地接收，则用户被动态地重新分配给不同的信道。 通过保持在基站处发送和接收的信号处于相同的功率电平来最小化干扰。 通过提取关于在基站接收到的信号的功率电平的信息并且通过将功率控制位发送回相应的远程终端来将接收到的信号保持在相同的功率电平，使得来自远程终端的信号电平可以被调整 向上或向下直到在基站处接收的每个信号的功率电平处于相同电平。 发射信号通过时分的自适应重传保持在相同的功率电平。
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