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    • 2. 发明申请
    • METHOD AND SYSTEM FOR SWITCHED BEAM ANTENNA COMMUNICATIONS
    • 用于开关光束天线通信的方法和系统
    • WO2009080057A1
    • 2009-07-02
    • PCT/EP2007/011140
    • 2007-12-19
    • TELECOM ITALIA S.P.A.PIRELLI & C. S.P.A.BOLLEA, LorisD'AMICO, ValeriaFODRINI, MaurizioGALLO, PaoloMELIS, BrunoRUSCITTO, Alfredo
    • BOLLEA, LorisD'AMICO, ValeriaFODRINI, MaurizioGALLO, PaoloMELIS, BrunoRUSCITTO, Alfredo
    • H01Q3/36H01Q21/20
    • H01Q3/2605H01Q1/2258
    • A system for processing an RF signal received via a plurality of antenna elements includes a connection arrangement (6) for selecting a sub-set of a given number of RF signals ( r i , r j ) received from the antenna elements as well as a processing arrangement (8) for combining the received RF signals of the selected subset ( r i , r j ) into a single RF signal for demodulation. The system includes a RF phasing circuit (18) for producing selective combinations of the received RF signals ( r i , r j ) by applying relative RF phase shift weights to the RF signals ( r i , r j ) that are combined; each combination includes RF signals received from a number of adjacent antenna elements equal to the number of the RF signals in the sub-set to be selected. A radio performance estimator (14) generates for each said selective combination of RF signals at least one non-RF radio performance indicator (RPI) representative of the quality of the RF signals in the combination. A decision block (16) identifies the sub-set of received RF signals ( r i , r j ) to be selected as a function of the one radio performance indicator (RPI) generated for the selective combinations of said received RF signals ( r i , r j ). This arrangement facilitates the selection of the signals/antennas to be used for reception e.g. in a WLAN device by avoiding that the selection process may involve all the possible combinations.
    • 用于处理经由多个天线元件接收的RF信号的系统包括用于选择从天线元件接收的给定数量的RF信号(ri,rj)的子集的连接装置(6)以及处理装置 (8),用于将所选择的子集(ri,rj)的接收的RF信号组合成单个RF信号以进行解调。 该系统包括RF相位电路(18),用于通过对组合的RF信号(r i,r j)施加相对RF相移权重来产生所接收的RF信号(r i,r j)的选择性组合; 每个组合包括从等于要选择的子集中的RF信号的数量的多个相邻天线元件接收的RF信号。 无线电性能估计器(14)针对RF信号的每个所述选择性组合生成表示组合中的RF信号的质量的至少一个非RF无线电性能指示符(RPI)。 决定块(16)识别作为根据所接收的RF信号(ri,rj)的选择性组合产生的一个无线电性能指示符(RPI)的函数来选择的接收RF信号(ri,rj)的子集, 。 这种布置有助于选择要用于接收的信号/天线,例如。 在WLAN设备中通过避免选择过程可能涉及所有可能的组合。
    • 7. 发明申请
    • A DELAY ELEMENT AND A CORRESPONDING METHOD
    • 延迟元素和相应的方法
    • WO2008064705A1
    • 2008-06-05
    • PCT/EP2006/011498
    • 2006-11-30
    • PIRELLI & C. S.P.A.TELECOM ITALIA S.P.A.GRASSANO, GiuseppeBOFFA, VincenzoGATTI, FabrizioRISI, LucaRUSCITTO, AlfredoSEMENZATO, Paolo
    • GRASSANO, GiuseppeBOFFA, VincenzoGATTI, FabrizioRISI, LucaRUSCITTO, AlfredoSEMENZATO, Paolo
    • H01P5/18H01P9/00
    • H01P5/184H01P9/00
    • A differential delay element (10) for use e.g. in selectively delaying RF signals in telecommunication systems includes a first microstrip circuit (12) and a second microstrip circuit (14) arranged side-by-side in a facing relationship. The first microstrip circuit (12) defines a first delayed travel path for a first signal from a first input port (IN1 ) to a first output port (OUT1 ) and the second microstrip circuit (14) defines a second delayed travel path for a second signal from a second input port (IN2) to a second output port (OUT2). A perturber (18) is arranged between the first (12) and second (14) microstrip circuits, displaceable (20) towards and away from the first (12) and second (14) microstrip circuits, so that when the distance of the perturber (18) to one (12 resp. 14) of the microstrip circuits increases, the distance of the perturber (18) to the other (14 resp. 12) of the microstrip circuits decreases and viceversa. The position of the perturber (18) between the first (12) and second (14) microstrip circuits defines the differential delay, namely the difference (Δτ=τ1-τ2) between the times (τ1, τ2) experienced by the two signals in travelling their travel paths through the delay device (10).
    • 一种差分延迟元件(10),用于例如 在电信系统中选择性地延迟RF信号包括以面对关系并排布置的第一微带电路(12)和第二微带电路(14)。 第一微带电路(12)限定用于从第一输入端口(IN1)到第一输出端口(OUT1)的第一信号的第一延迟行进路径,并且第二微带电路(14)限定第二延迟行进路径用于第二输入端口 信号从第二输入端口(IN2)传输到第二输出端口(OUT2)。 在第一(12)和第二(14)微带电路之间布置有一个扰流器(18),朝向和远离第一(12)和第二(14)微带电路可移位(20),使得当扰流器 (18)到微带电路之一(12或14)增加,微带电路的静音(18)到另一个(14或12)的距离减小,反之亦然。 第一(12)和第二(14)微带电路之间的谐振器(18)的位置定义差分延迟,即由两个信号经历的时间(t1,t2)之间的差值(Δt= t1-t2) 在通过延迟装置(10)行进其行进路径时。
    • 8. 发明申请
    • EARLY-LATE SYNCHRONIZER HAVING REDUCED TIMING JITTER
    • 具有减少时序抖动的早期同步器
    • WO2004047327A1
    • 2004-06-03
    • PCT/EP2002/012814
    • 2002-11-15
    • TELECOM ITALIA S.P.A.STMICROELECTRONICS S.R.L.ETTORRE, DonatoGRAZIANO, MaurizioMELIS, BrunoFINOTELLO, AndreaRUSCITTO, Alfredo
    • ETTORRE, DonatoGRAZIANO, MaurizioMELIS, BrunoFINOTELLO, AndreaRUSCITTO, Alfredo
    • H04B1/707
    • H04B1/7085H04B1/709
    • A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises: - a delay line (56) for storing a plurality of consecutive samples (E-1, E, M, L, L+1) of the incoming spread spectrum signal; - three digitally controlled interpolators (24, 26, 28) for determining by interpolation between consecutive samples an interpolated early sample (e), an interpolated middle sample (m) and an interpolated late sample (1); - two correlators (30, 32) for calculating an error signal (ξ) as the difference between the energy of the symbols computed from the interpolated early (e) and late (1) samples; - a circuit for generating a control signal (S¿OUT?) for controlling the interpolation phase of the digitally controlled interpolator (24) for the early sample (e), and - a digital non-linear filter (68), for smoothing the control signal (S¿OUT?) of the interpolator (24) for the early sample (e), enabling the update operation of the control signal only when the absolute value (|ξ(n)|) of the error signal at a time instant n is smaller than the absolute value (|ξ(n-1)|) of the same error signal at a time instant n-1.
    • 一种用于在数字通信接收机中保持输入扩频信号与本地生成代码之间的精确对准的装置,包括: - 延迟线(56),用于存储多个连续样本(E-1,E,M,L,L +1)的入射扩频信号; - 三个数字控制内插器(24,26,28),用于通过内插的早期采样(e),内插中间样本(m)和插值后期样本(1)来确定连续采样之间的内插; - 用于计算误差信号(xi)的两个相关器(30,32)作为从内插的早期(e)和晚期(1)样本计算的符号的能量之间的差; - 用于产生用于控制用于早期采样(e)的数字控制内插器(24)的内插相位的控制信号(S _ OUT <)的电路,以及 - 数字非线性滤波器(68),用于平滑 用于早期采样(e)的内插器(24)的控制信号(S _OUT?),使得只有当误差信号的绝对值(|| xi(n)||) 时刻n小于在时刻n-1的相同误差信号的绝对值(|| xi(n-1)||)。