公开(公告)号：EP1499014A1

公开(公告)日：2005-01-19

申请号：EP03354064.2

申请日：2003-07-15

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics S.A.

Inventor： Messina, Ettore ,  Piazzese, Nicolo Ivan ,  Lippolis, Giuseppe ,  Salurso, Elena ,  Serratore, Alberto ,  Galluzzo, Agostino

IPC: H03G3/00

CPC classification number: H03G3/3052 ,  H03G3/3036 ,  H03M1/185

Abstract: A method for automatic gain control, e.g. in a receiver for a mobile telecommunication system comprises the operations of:

mixing (13) a received signal (S in ) with an error signal ( P err , P f );
performing an analog-to-digital conversion (14) on the result of said mixing operation, in order to obtain a controlled output signal ( x(t) , S out );
measuring (25) the power ( P meas ) of said controlled output signal (x(t), S out );
subtracting the measured power (P meas ) from a reference power ( P ref ) in order to obtain said error signal ( P err , P f ).

According to the proposed method the operation of measuring the power of the controlled output signal ( x(t) , S out ) comprises:

setting at least a power threshold ( T h ;T h1 , T h2 , T h3 );
measuring (27) a rate of crossings of said power threshold ( T h ; T h1 , T h2 , T h3 ) by said controlled output signal ( x(t) , S out ) in a given observation window;
deriving (29) from said number of crossings the measured power value ( P meas , σ 2=1 ).

The proposed method is particularly suitable for application in receivers of mobile telecommunication systems based on CDMA (Code Division Multiple Access), but also for mobile telecommunication system according to GSM, UMTS, CDMA2000, IS95 o WBCDMA standards and satellite telecommunication systems.

Abstract translation: 一种用于自动增益控制，E.G.方法 在混合（13）的接收信号（SIN）在误差信号（PERR，PF）;：在一种用于移动电信系统中的接收器包括的操作 在执行模拟 - 数字上混合所述外科手术，以获得一个控制输出信号的结果转换（14）（X（t），S OUT）; 测量（25）的功率的所述受控的输出信号（Pmeas）（X（t），S OUT）; 为了减去参考功率（县）所测得的功率（Pmeas）以获得所述误差信号（PERR，PF）。 。根据测量运算受控输出信号的功率（X（t）的，SOUT）包括所提出的方法：设置至少一个功率阈值（Th时，Th1细胞，TH2，TH3）; 测量（27）一（Th时，Th1细胞，TH2，TH3）所述功率阈值的交叉点由所述受控的输出信号速率$（X（t），S\; out）的一个给定的观察窗;\; 来自所述号码的交叉测量功率值的$ （Pmeas，西格玛2\; =\; 1）导出（29）。所提出的方法特别适合于在基于CDMA（码分多址）移动电信系统的接收器应用，该但是对于移动电信系统雅丁到GSM，UMTS，CDMA2000，IS-95öWBCDMA码标准和卫星通信系统\; ，\mathop{\mathrm{image}}$$

公开(公告)号：EP1499014B1

公开(公告)日：2010-03-17

申请号：EP03354064.2

申请日：2003-07-15

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics S.A.

Inventor： Messina, Ettore ,  Piazzese, Nicolo Ivan ,  Lippolis, Giuseppe ,  Salurso, Elena ,  Serratore, Alberto ,  Galluzzo, Agostino

IPC: H03G3/00

CPC classification number: H03G3/3052 ,  H03G3/3036 ,  H03M1/185

公开(公告)号：EP1343265A1

公开(公告)日：2003-09-10

申请号：EP02425130.8

申请日：2002-03-07

Applicant: STMicroelectronics S.r.l.

Inventor： Loiacono, Daniele ,  Messina, Ettore ,  Avellone, Giuseppe ,  Galluzzo, Agostino

IPC: H04J13/02

CPC classification number: H04J13/105 ,  H04J13/0025

Abstract: In order to generate the main scrambling code of order N and the secondary scrambling code of order K within the set identified by the primary scrambling code of order N, a first m-sequence and a second m-sequence are generated using Fibonacci linear feedback shift registers (LFSRs). Then said first m-sequence and said second m-sequence are modulo-2 added so as to form the I branch of said primary scrambling code. A first T-bit masking word and a second T-bit masking word of rank 0 (X0-MASK, Y0-MASK) are generated that correspond to the polynomial time shifts (X0 (D), Y0 (D)), and the intermediate taps of the X and y registers respectively chosen by means of said masking words (X0-MASK, Y0-MASK) are modulo-2 added so as to generate a third sequence and a fourth sequence which are modulo-2 added together to form the Q branch of said primary scrambling code. With the choice, starting from the least significant Kmax bits of the register X, of the K-th intermediate tap corresponding to the secondary scrambling code of order K within said set identified by the primary scrambling code of order N, a fifth sequence is generated, which, modulo-2 added to said second sequence, forms the I branch of said secondary scrambling code. By modulo-2 summing the intermediate taps of the register X masked by means of the aforesaid first masking word of rank N (XN-MASK), a sixth sequence is generated, which, modulo-2 added to the aforesaid fourth sequence, forms the Q branch of the secondary scrambling code.

Abstract translation: 为了产生N阶的主扰码和由次序N的主扰码识别的集合内的次序K的次扰码，使用斐波纳契线性反馈移位生成第一m序列和第二m序列 寄存器（LFSR）。 然后，所述第一m序列和所述第二m序列被加模，以便形成所述主扰码的I分支。 生成对应于多项式时移（X0（D），Y0（D））的第0个（X0-MASK，Y0-MASK）的第一T位屏蔽字和第二T位屏蔽字， 分别通过所述掩蔽字（X0-MASK，Y0-MASK）选择的X和Y寄存器的中间抽头被加模，以便产生模2加在一起形成的第三序列和第四序列 所述主扰码的Q分支。 通过选择，从寄存器X的最低有效Kmax位开始，对应于由次序N的主扰码识别的所述集合内的次序K的次级扰频码的第K个中间抽头，产生第五个序列 ，其中添加到所述第二序列的模2形成所述辅助扰码的I分支。 通过模2对由N（XN-MASK）的上述第一掩蔽字掩蔽的寄存器X的中间抽头进行求和，产生第六序列，其中加上前述第四序列的模2形成 Q分支的二次扰码。

公开(公告)号：EP1343265B1

公开(公告)日：2006-05-31

申请号：EP02425130.8

申请日：2002-03-07

Applicant: STMicroelectronics S.r.l.

Inventor： Lo Iacono, Daniele ,  Messina, Ettore ,  Avellone, Giuseppe ,  Galluzzo, Agostino

IPC: H04J13/02

CPC classification number: H04J13/105 ,  H04J13/0025

公开(公告)号：EP1933469A1

公开(公告)日：2008-06-18

申请号：EP06425828.8

申请日：2006-12-12

Applicant: STMicroelectronics S.r.l.

Inventor： Avellone, Giuseppe ,  Frazzetto, Maristella ,  Messina, Ettore

IPC: H04B1/707 ,  G01S1/00

CPC classification number: G01S19/30 ,  H04B1/7075 ,  H04B1/7085

Abstract: A method and a system for the acquisition and tracking of BOC (n,n) modulated codes are described, in which a correlation function is locally generated at a receiver terminal using a code w a according to the relationship w a ( τ )   =   c ( τ n ) -   a ⋅ prn ⁢ τ n   + T c    ̸ 2 -   prn   τ n -   T c  ̸ 2
wherein c(τ) is a local replica of the BOC modulated pseudo-random noise code with delay τ n , prn(τ) is a replica of a unmodulated pseudo-random noise code, and a is a predeterminable weight coefficient.
Said correlation function is used in an acquisition test function according to the formula x BOC ( n ) - a ⋅ x BOC ⁢ / PRN ( n + 1 ) - x BOC / PRN ⁢ n - 1 2
wherein x BOC is the autocorrelation function of the BOC modulated pseudo-random noise code acquired, and x BOC/PRN is the cross correlation function between said acquired BOC modulated pseudo-random noise code and the early and late local replica of the unmodulated pseudo-random noise code, respectively. Said test function is used to recognize a code acquisition, if a value of said test function is higher than a predetermined threshold.

Abstract translation: 一种方法，以及用于调制码被描述的BOC（N，N）的捕获和跟踪，其中的相关函数是在接收器终端使用的码WA雅丁到关系WA（A）€‰=€本地产生的系统 ‰C（正） - €‰一个

公开(公告)号：EP1306979A1

公开(公告)日：2003-05-02

申请号：EP01125320.0

申请日：2001-10-26

Applicant: STMicroelectronics N.V. ,  STMicroelectronics S.r.l.

Inventor： Messina, Ettore ,  Sapienza, Marzia ,  Berens, Friedbert

IPC: H04B1/707 ,  H04B7/26

CPC classification number: H04W56/0085 ,  H04B1/70751 ,  H04B1/7083 ,  H04J13/0044

Abstract: The device of slot synchronisation comprises reception means (BE) for receiving a synchronisation signal containing a synchronisation code ; a local memory (LM) containing a copy of the synchronisation code ; correlation means (CMF) for performing a correlation process of the received signal with said copy of the synchronisation code, for successively delivering groups of at the most N indexed samples respectively affected with N correlation values ; selection means (SEL) for selecting among said N samples of the first group a sub-group of N1 indexed samples according to a predetermined selection criteria ; accumulation means (AD) for accumulating over G groups, energy values corresponding to the correlation values of the N1 selected indexed samples, in order to obtain N1 accumulated energy values ; detection means (DM) for acquiring the slot timing by detecting one or more maxima among the N1 accumulated energy values.

Abstract translation: 时隙同步的装置包括接收装置（BE）用于接收包含同步代码的同步信号; 本地存储器（LM）中的同步代码的副本; 装置，用于执行与所述同步码的所述拷贝的接收信号的相关处理，对于在分别索引患有N个相关值的最N个样本依次递送的组的相关性（CMF）; 装置选择（SEL），用于所述第一组的所述N个样本中选择一个子组N1的索引样本gemäß到预定的选择标准; 装置，用于累积在G基团，能量值对应于所选择的N1索引样本的相关值，以便获得N1累积能量值累加（AD）; 检测装置（DM），用于通过检测所述N1累积的能量值当中的一个或更多个最大值取得时隙定时。