Process for obtaining a signal indicating a synchronization error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver

US5727018A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Andreas Wolf · Munich, DE
• Hans-Werner Arweiler · Berlin, DE

Key dates

• Filing date: Nov 28, 1995
• Grant date: Mar 10, 1998
• Expiry date: Nov 28, 2015

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/70751
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A process may be implemented which obtains a signal indicating a synchronization error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver in a measuring device on the receiving end. In order to be able to detect a synchronization error as quickly and reliably as possible, successive sections (a, b, c) of a reference pseudo-random signal sequence (g'(n)) are each cross-correlated separately with the received pseudo-random signal sequence (g(n)), yielding partial cross-correlation functions (KKF.sub.a (n), KKF.sub.b (n) and KKF.sub.c (n)). The partial cross-correlation functions are added up to obtain a sum cross-correlation function (KKF.sub.s (n)). The sum cross-correlation function (KKF.sub.s (n)) is analyzed to detect the proper chronological occurrence of at least three maximums (m.sub.a, m.sub.b and m.sub.c). If the maximums (m.sub.a, m.sub.b and m.sub.c) do not occur at the proper times, a signal (synch) indicating a synchronization error is generated.