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公开(公告)号：US07522653B2
公开(公告)日：2009-04-21
申请号：US11046361
申请日：2005-01-27
IPC分类号： H04B1/00
CPC分类号： H04B1/7077
摘要： A method is disclosed for PN correlation and symbol synchronization of a spread spectrum signal at a receiver when a symbol boundary of the spread spectrum signal is not on a PN epoch or is otherwise unknown. The method includes the operation of modulating the spread spectrum signal with a PN code to form a potentially despread signal. The potentially despread signal can be integrated for a plurality of symbol times at a rate of N integrations per symbol time to form N symbol energies per symbol for a plurality of symbols. Each of the N symbol energies can correspond to a different symbol time hypothesis. The N symbol energies from the plurality of symbols can be added respectively to form N summed symbol time hypotheses. The Nth summed symbol time hypothesis having maximum power can be found. The Nth summed symbol time hypothesis can relate to a location of the symbol boundary.
摘要翻译： 当扩展频谱信号的符号边界不在PN纪元上时，公开了一种在接收机处的扩频信号的PN相关和符号同步的方法，或者以其他方式未知。 该方法包括利用PN码对扩展频谱信号进行调制以形成潜在的解扩信号。 潜在去扩展信号可以以每个符号时间的N个积分的速率被整合为多个符号时间，以对于多个符号形成每个符号的N个符号能量。 N个符号能量中的每一个可以对应于不同的符号时间假设。 可以分别添加来自多个符号的N个符号能量以形成N个相加的符号时间假设。 可以找到具有最大功率的第N个和符号时间假设。 第N个和符号时间假设可以与符号边界的位置有关。
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2.发明授权公开(公告)号：US07403583B1
公开(公告)日：2008-07-22
申请号：US10369229
申请日：2003-02-19
IPC分类号： H04L7/00
CPC分类号： H04B1/7075
摘要： A system and method for using Psuedo-Noise (PN) phase to determine frame start of a data frame is provided. The system and method includes at least two PN component codes, wherein the at least two PN component codes are relatively prime. A received PN composite encoded signal is correlated with at least one of the PN component codes and a frame start is determined. With reference to frame start at least one training sequence bit is located. The training bits may be overwritten on FEC encoded frame data such that a FEC decoder may be used to recover data overwritten by the training sequence bit(s).
摘要翻译： 提供了一种使用Psuedo-Noise（PN）相位来确定数据帧的帧起始的系统和方法。 该系统和方法包括至少两个PN分量代码，其中至少两个PN分量代码是相对素数。 接收的PN复合编码信号与PN分量代码中的至少一个相关，并且确定帧起始。 参考帧开始，至少定位一个训练序列位。 可以在FEC编码的帧数据上覆盖训练比特，使得FEC解码器可以用于恢复由训练序列比特重写的数据。
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3.发明授权Antennas, antenna systems and methods providing randomly-oriented dipole antenna elements 有权天线，天线系统和提供随机取向的偶极天线元件的方法公开(公告)号：US08456374B1
公开(公告)日：2013-06-04
申请号：US12589770
申请日：2009-10-28
CPC分类号： H01Q9/28 , H01Q21/062
摘要： In one exemplary embodiment, an antenna arrangement includes: a substrate; and a plurality of dipole antenna elements disposed on the substrate, wherein the plurality of dipole antenna elements are randomly-oriented with respect to each other. In further exemplary embodiments, the plurality of dipole antenna elements includes at least six dipoles that are all electrically fed and do not need to be magnetically fed in order to generate and detect an arbitrary polarization. In still further exemplary embodiments, each dipole element has a fractal shape.
摘要翻译： 在一个示例性实施例中，天线装置包括：基板; 以及设置在基板上的多个偶极天线元件，其中所述多个偶极天线元件相对于彼此随机取向。 在另外的示例性实施例中，多个偶极子天线元件包括至少六个偶极子，其全部是电馈电的，并且不需要被磁性馈送以产生和检测任意偏振。 在另外的示例性实施例中，每个偶极子元件具有分形形状。
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4.发明授权MIMO communication using interference cancellation and unequal transmit power distribution 有权使用干扰消除和不等发射功率分配的MIMO通信公开(公告)号：US07715485B1
公开(公告)日：2010-05-11
申请号：US11651171
申请日：2007-01-08
CPC分类号： H04K1/10 , H04B7/0413 , H04B7/0697 , H04L25/03006 , H04L2025/03426 , H04W52/42
摘要： Communication of data over a multiple-input multiple-output (MIMO) channel includes allocating transmission power unequally to the different data streams. The transmission power allocation is performed without regard to a state of a changing channel response of the MIMO channel. A relatively low complexity interference cancelling receiver can therefore decode the data streams.
摘要翻译： 通过多输入多输出（MIMO）信道的数据通信包括不同地分配不同数据流的传输功率。 在不考虑MIMO信道的信道响应变化的状态的情况下进行发送功率分配。 因此，相对低复杂度的干扰消除接收机可以对数据流进行解码。
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公开(公告)号：US08509711B1
公开(公告)日：2013-08-13
申请号：US12987823
申请日：2011-01-10
申请人： Zachary C. Bagley , Thomas R. Giallorenzi , Radivoje Zarubica , Robert G. Rebolledo , Richard G. Edwards , Robert M. Gillespie , Linda J. McMillin , Stephen M. Dudley
发明人： Zachary C. Bagley , Thomas R. Giallorenzi , Radivoje Zarubica , Robert G. Rebolledo , Richard G. Edwards , Robert M. Gillespie , Linda J. McMillin , Stephen M. Dudley
CPC分类号： H04B1/525
摘要： Wireless terminals, systems, and methods use interlaced diplexers. A first diplexer can provide a first pair of bands separated by a first separation band, and a second diplexer can provide a second pair of bands separated by a second separation band. The first separation band and the second separation band can overlap. Transceivers (comprising transmitters and receivers) can be coupled to the diplexers to provide frequency-division duplex communications using one or both of the pairs of bands.
摘要翻译： 无线终端，系统和方法使用隔行双工器。 第一双工器可以提供由第一分离带分离的第一对频带，而第二双工器可以提供由第二分离带分离的第二对频带。 第一分离带和第二分离带可以重叠。 收发器（包括发射机和接收机）可以耦合到双工器，以使用频带对中的一个或两个来提供频分双工通信。
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6.发明授权System and method for priority communication management in a hybrid TDMA-SS system 有权在混合TDMA-SS系统中优先通信管理的系统和方法公开(公告)号：US07496080B1
公开(公告)日：2009-02-24
申请号：US10619864
申请日：2003-07-14
IPC分类号： H04B7/212 , H04B7/216 , H04L12/403 , H04L12/43 , H04J3/02
CPC分类号： H04L12/4035
摘要： A method and system for managing Priority Messages in a hybrid TDMA-Spread Spectrum (TDMA-SS) communication system is provided. The method and system include a HUB for generating a HUB TDMA epoch, wherein the HUB TDMA epoch includes at least one Priority Message (PM) slot. The PM slot includes a plurality of assignable PM sub-slots. The method and system also include at least one SPOKE, wherein the at least one SPOKE is adapted to transmit a Priority Message during its assigned PM sub-slot within the HUB TDMA epoch.
摘要翻译： 提供了一种用于管理混合TDMA扩频（TDMA-SS）通信系统中的优先级消息的方法和系统。 该方法和系统包括用于产生HUB TDMA时期的HUB，其中HUB TDMA时期包括至少一个优先级消息（PM）时隙。 PM时隙包括多个可分配的PM子时隙。 所述方法和系统还包括至少一个SPOKE，其中所述至少一个SPOKE适于在所述HUB TDMA时段内的其分配的PM子时隙期间发送优先级消息。
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公开(公告)号：US07822157B2
公开(公告)日：2010-10-26
申请号：US10334191
申请日：2002-12-31
申请人： Merle L. Keller , Samuel Charles Kingston , Steven Barham , Alan Earl Lundquist , Zachary C. Bagley , Warren Paul Willes , Raied N. Mazahreh , Steven J. McEntire
发明人： Merle L. Keller , Samuel Charles Kingston , Steven Barham , Alan Earl Lundquist , Zachary C. Bagley , Warren Paul Willes , Raied N. Mazahreh , Steven J. McEntire
CPC分类号： H04B1/7075 , H04B2201/70715
摘要： A digital communication system includes a generator for generating a plurality of pulse trains, each having a different timing, and pre-compensation circuitry for synchronizing the plurality of pulse trains to a timing signal. The system also includes comparison circuitry for simultaneously comparing a received burst code signal to each of the plurality of pulse trains, where the burst code signal is synchronized to the timing signal, and a detector for detecting which of the pulse trains is a closest temporal match to the burst code signal. The pre-compensation circuitry operates to reduce acquisition time and keep PN code uncertainties within the range of the comparison circuitry.
摘要翻译： 数字通信系统包括用于产生每个具有不同定时的多个脉冲串的发生器和用于将多个脉冲序列同步到定时信号的预补偿电路。 该系统还包括比较电路，用于同时比较所接收的脉冲串码信号与多个脉冲串中的每个脉冲序列，其中突发码信号与定时信号同步，以及检测器，用于检测哪个脉冲序列是最接近的时间匹配 到突发码信号。 预补偿电路用于减少采集时间并将PN码不确定度保持在比较电路的范围内。
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8.发明授权Digital timing recovery operable at very low or less than zero dB Eb/No 有权数字定时恢复可操作在非常低或小于零dB Eb / No公开(公告)号：US07486747B1
公开(公告)日：2009-02-03
申请号：US10888280
申请日：2004-07-09
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04B1/7093 , H04L7/0029 , H04L7/0054 , H04L25/0206 , H04L25/024 , H04L2027/003 , H04L2027/0053 , H04L2027/0067
摘要： A receiver (20) for performing timing recovery over at least one complex channel at low or less than zero SNR (signal power to noise power, in dB) has at least one receive element such as an antenna, an analog-to-digital converter 21 (ADC), a fractional interpolation filter 23, a matched filter 24, and a timing correction loop 26. The timing correction loop 26 selects a minimum mean square error from the output of the matched filter 24 to determine a timing signal output to the interpolation filter 23, and provides one-bit weights to the matched filter 24. Preferably, the timing correction loop 26 includes a magnitude detector 26c, a moving average filter 26b, and a timing error detector 26a that outputs an integer m and fractional μ timing factor to the interpolation filter 23. Within a phase correction loop 27 is a maximum likelihood channel estimator 27b and a phase error detector 27a that controls a phase rotator 22 disposed between the ADC 21 and the interpolation filter 23.
摘要翻译： 用于在低或小于零SNR（信噪比功率，以dB为单位）的至少一个复信道上执行定时恢复的接收机（20）具有至少一个接收元件，例如天线，模数转换器 21（ADC），分数内插滤波器23，匹配滤波器24和定时校正环路26.定时校正回路26从匹配滤波器24的输出中选择最小均方误差，以确定输出到 内插滤波器23，并且向匹配滤波器24提供一位加权。优选地，定时校正回路26包括幅度检测器26c，移动平均滤波器26b和定时误差检测器26a，其输出整数m和分数μ定时 在相位校正环路27中，最大似然信道估计器27b和相位误差检测器27a控制设置在ADC 21和插值滤波器23之间的相位旋转器22。
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