Invention Publication
- Patent Title: METHOD AND DEVICE FOR FINE SYNCHRONIZATION OF A DIGITAL TELECOMMUNICATION RECEIVER
- Patent Title (中): 方法和设备进行精细同步数字通信接收机
-
Application No.: EP02787694.5Application Date: 2002-11-15
-
Publication No.: EP1561286A1Publication Date: 2005-08-10
- Inventor: ETTORRE, Donato , GRAZIANO, Maurizio,Telecom Italia S.p.A. , MELIS, Bruno,Telecom Italia S.p.A. , FINOTELLO, Andrea , RUSCITTO, Alfredo
- Applicant: Telecom Italia S.p.A. , STMicroelectronics S.r.l.
- Applicant Address: Piazza degli Affari 2 20123 Milano IT
- Assignee: Telecom Italia S.p.A.,STMicroelectronics S.r.l.
- Current Assignee: Telecom Italia S.p.A.,STMicroelectronics S.r.l.
- Current Assignee Address: Piazza degli Affari 2 20123 Milano IT
- Agency: Giannesi, Pier Giovanni
- International Announcement: WO2004047326 20040603
- Main IPC: H04B1/707
- IPC: H04B1/707
Abstract:
A method for the synchronization of a digital telecommunication receiver comprises the steps of: - storing a plurality of consecutive samples E-l, E, M, L, L+1 of an incoming spread spectrum signal in a delay line 56; - determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a first digitally controlled interpolator 26, an interpolated early sample (e) anticipating an optimal sampling time instant; - determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a second digitally controlled interpolator 24, an interpolated middle sample (m) corresponding to the optimal sampling time instant; - determining by interpolation between consecutive samples of the incoming spread spectrum signal, by means of a third digitally controlled interpolator 28, an interpolated late sample (1) delayed with respect to the optimal sampling time instant; - calculating an error signal ξ as the difference between the energy of the symbols computed from the interpolated early sample (e) and the interpolated late (1) sample; - extracting the sign of the error signal ξ - accumulating the sign of the error signal ξ for the generation of control signals SE, SM, SL for controlling the interpolation phases of the digitally controlled interpolators used for determining the interpolated early (e), middle (m) and late (l) samples. The accumulated value has a positive saturation value of +4 and a negative saturation value of 4.
Public/Granted literature
- EP1561286B1 METHOD AND DEVICE FOR FINE SYNCHRONIZATION OF A DIGITAL TELECOMMUNICATION RECEIVER Public/Granted day:2013-04-10
Information query