Method and arrangement for fast frequency searching in broadband mobile radio receivers

US7197280B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Steffen Paul · Baierbrunn, DE
• Thomas Ruprich · Birkenfeld, DE

Key dates

• Filing date: Jul 9, 2004
• Grant date: Mar 27, 2007
• Expiry date: Sep 1, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B17/309
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

In the method according to the invention for searching for the carrier frequency f of a mobile radio transmitter in a mobile radio receiver, two or more values e(k) of the spectral input power are measured at different discrete test frequencies fk, where fk<fk+1. The maximum e(kmax) of the values e(k) and of the associated test frequency fkmax is then searched for. An estimated value f′, which is characteristic of the sought carrier frequency f, can be determined from knowledge of the values of at least one value pair e(k1) and e(k2) where k1<kmax<k2, and of the specific test frequency fkmax.