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    • 3. 发明授权
    • Self-adaptive equalizer circuit for a differentially coherent
demodulation installation
    • 用于差分相干解调装置的自适应均衡器电路
    • US5027371A
    • 1991-06-25
    • US459411
    • 1989-12-29
    • Philippe SehierGhassan K. Kaleh
    • Philippe SehierGhassan K. Kaleh
    • H04B3/06H04B7/005H04L1/06H04L25/03
    • H04L25/03038
    • A self-adaptive equalizer circuit for a receive using differential demodulation, and in particular for a receiver using a plurality of paths in diversity (1, 2). For each diversity path (1, 2) there is a self-adaptive filter (18, 19) placed before the differential demodulation. The coefficients (CO to Cn) of the filter are updated at each instant KT, where T is the symbol rate period, using the formula:Ci(k)=Ci(k-1)-.mu.. y(k-1). x(k-1)* . e(k)where .mu. is a real number much less than 1, e.g. equal to 0.001, where Ci(k) is the value given to the coefficient (Ci) at instant kT; Ci(k-1) is the value taken by the same coefficient Ci at the instant (k-1)T; y(K-1) is the output signal from the self-adaptive filter, the symbol being sampled at the symbol rate of period T; x(k-i)* is the complex conjugate value of the sample x(k-i) present in the filter at said instant kT and relating to the coefficient Ci; and e(k) is the above-mentioned error at the instant kT.
    • 一种用于使用差分解调的接收的自适应均衡器电路,特别是对于在分集(1,2)中使用多条路径的接收机。 对于每个分集路径(1,2),存在放置在差分解调之前的自适应滤波器(18,19)。 滤波器的系数(CO到Cn)在每个时刻KT被更新,其中T是符号速率周期,使用公式:Ci(k)= Ci(k-1)-mu。 y(k-1)。 x(k-1)*。 μ(k)其中mu是远小于1的实数,例如 等于0.001,其中Ci(k)是瞬时kT给出系数(Ci)的值; Ci(k-1)是在时刻(k-1)T下由相同系数Ci取的值; y(K-1)是来自自适应滤波器的输出信号,符号以周期T的符号率采样; x(k-i)*是在所述瞬时kT存在于滤波器中并与系数Ci相关的样本x(k-i)的复共轭值; e(k)是瞬时kT的上述误差。
    • 4. 发明授权
    • Method and device for access control to a wireless local access network
    • 用于对无线本地接入网进行访问控制的方法和设备
    • US07376098B2
    • 2008-05-20
    • US10482820
    • 2003-05-20
    • Siegfried LoefflerPhilippe LainePhilippe Sehier
    • Siegfried LoefflerPhilippe LainePhilippe Sehier
    • H04Q7/20
    • H04W48/08H04W4/00H04W12/08H04W64/00H04W84/12H04W88/06
    • A device is dedicated to controlling access to wireless communications local area networks having a local coverage area included in a main coverage area of a main communications network equipped with mobile communications device positioning means. The device having management means connected to the positioning means and adapted i) to compare the positions of at least some of the mobile devices to those of the local areas, in order to select the primary identifiers of the mobile devices substantially positioned in said local areas, and ii) to send a messaging server of the main network instructions including the primary identifier of each mobile device selected, in order for it to send them a message telling their users that they can connect to the local area network in whose local area they are placed.
    • 一种设备专用于控制具有包括在配备有移动通信设备定位装置的主通信网络的主覆盖区域中的本地覆盖区域的无线通信局域网的接入。 所述设备具有连接到所述定位装置的管理装置,并且适于i)比较所述移动设备中的至少一些与所述局部区域中的至少一些的位置,以便选择基本上位于所述局部区域中的移动设备的主标识符 ,以及ii)发送包括所选择的每个移动设备的主标识符的主要网络指令的消息服务器,以便向他们发送消息,告知用户他们可以连接到其本地区域的局域网 摆放在。
    • 8. 发明授权
    • Search method for acquisition of time synchronization between a
spreading sequence of a receiver and that of a transmitter
    • 用于获取接收机的扩展序列与发射机的扩展序列之间的时间同步的搜索方法
    • US5822384A
    • 1998-10-13
    • US491576
    • 1995-06-16
    • Bertrand ThebaultPhilippe Sehier
    • Bertrand ThebaultPhilippe Sehier
    • H04B1/707H04J3/06
    • H04B1/70775H04B1/70755H04B1/7156
    • A search method for acquisition of time synchronization between a spreading sequence of a receiver and a spreading sequence of a transmitter, the receiver receiving a spread signal and demodulating the signal using the spreading sequence of the receiver includes a test step consisting in measuring the energy of the demodulated signal by integrating the demodulated signal during a time interval Tobs.sub.i and comparing that energy with a threshold value to determine if the threshold value is exceeded, for a given hypothesis as to the time shift between the spreading sequences, and modifying the time shift hypothesis if the threshold value is not exceeded and incrementing the value of a counter. Steps a and b are repeated until the value of the counter reaches a predetermined value. When the predetermined value is reached, the time interval Tobs.sub.i is replaced with a time interval Tobs.sub.i+1, with Tobs.sub.i+1 =m.Tobs.sub.i and m>1, and the process resumes at step a replacing Tobs.sub.i with Tobs.sub.i+1. The process ends when the predetermined value has been reached a predetermined number of times. The invention applies to the reception of spread signals with an unknown signal-to-noise ratio.
    • 一种用于获取接收机的扩展序列和发射机的扩展序列之间的时间同步的搜索方法,接收器接收扩展信号并使用接收机的扩展序列解调信号包括测试步骤,包括测量 通过在时间间隔Tobsi期间对解调信号进行积分并将该能量与阈值进行比较来确定是否超过阈值的解调信号,对于扩展序列之间的时间偏移的给定假设,以及修改时移假说 如果不超过阈值并递增计数器的值。 重复步骤a和b直到计数器的值达到预定值。 当达到预定值时,用Tobsi + 1 = m.Tobsi和m> 1的时间间隔Tobsi + 1替换时间间隔Tobsi,并且在步骤a处理恢复Tobsi + 1替换Tobsi。 当预定值达到预定次数时,处理结束。 本发明适用于具有未知信噪比的扩展信号的接收。
    • 10. 发明授权
    • Direct sequence spread spectrum digital communication system employing
sequence changing during transmission and transmitter and receiver
implementing same
    • 直接序列传播频谱数字通信系统在传输和发射机和接收机实现过程中进行顺序更改
    • US5170410A
    • 1992-12-08
    • US721007
    • 1991-06-26
    • Alain GressierPhilippe Sehier
    • Alain GressierPhilippe Sehier
    • H04B1/707
    • H04B1/707
    • A digital signal receiver comprises receiver and demodulator means producing from the received signal a succession of complex elements. It produces sequences of successive complex elements consisting of conjugate elements of homologous elements used at the transmitting end. The sequences so used at the receiving end are synchronized to the homologous sequences used at the transmitting end. The complex elements obtained at the output of the demodulator are multiplied by a corresponding sequence of successive complex elements so produced and synchronized. The resultant complex elements appearing during the duration of an information symbol are summed over said duration to produce an estimate of the original information symbols used at the transmitting end. The complex elements obtained at the output of the demodulator are analyzed to identify a marking introduced at the transmitting end. Selector means ae controlled in response to the marking so identified in such a way as to retain the same sequence of conjugate complex elements or to change sequence. Successive sequence changes occur at random times determined by the receiver exclusively by analyzing said markings but in a deterministic order shown intrinsically to the receiver. The marking may consist in the relative values (the same or opposite values) assigned to the first two elements of the sequence for each information symbol.
    • 数字信号接收机包括从接收信号产生一系列复杂元件的接收机和解调器装置。 它产生由发送端使用的同源元件的共轭元素组成的连续复杂元件序列。 在接收端使用的序列与发送端使用的同源序列同步。 在解调器的输出处获得的复数元素乘以相应的连续复数元素序列,这样产生和同步。 在信息符号期间出现的所得到的复数元素在所述持续时间内相加以产生在发送端使用的原始信息符号的估计。 分析在解调器的输出处获得的复数元素,以识别在发送端引入的标记。 选择器意味着响应于如此标记的标记而被控制,以便保持相同的共轭复合元件序列或改变序列。 连续序列变化发生在随机时间内,由接收机专门通过分析所述标记而是以固有的顺序显示给接收机。 标记可以包括分配给每个信息符号的序列的前两个元素的相对值(相同或相反的值)。