Path searcher using reconfigurable correlator sets

US7082286B2 · kind B2 · utility

Assignee

• InterDigital Technology Corporation · US

Inventors

• John Kaewell · Jamison, US
• Timothy Berghuis · Exton, US
• Jan Meyer · Weilheim, DE
• Peter Bohnhoff · Munich, DE
• Alexander Reznik · Titusville, US
• Edward L. Hepler · Malvern, US
• Michael Koch · Biberist, CH
• William C. Hackett · Doylestown, US
• David S. Bass · Great Neck, US
• Steven Ferrante · Doylestown, US

Key dates

• Filing date: Apr 11, 2003
• Grant date: Jul 25, 2006
• Expiry date: Jul 1, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2201/70711
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A Node-B/base station has a path searcher and at least one antenna for receiving signals from users. The path searcher comprises a set of correlators. Each correlator correlates an inputted user code with an inputted antenna output of the at least one antenna. An antenna controller selectively couples any output of the at least one antenna to an input of each correlator of the set of correlators. A code phase controller selects a user code for input into the set of correlators. Each delay of a series of delays delays the selected user code by a predetermined amount and each correlator of the set of correlators receives a different code phase delay of the selected user code. A sorter and path selector sorts the output energy levels of each correlator of the sets of correlators and produces a path profile for a user based on the sorted output energy levels.