Method for polar diagram shaping in a radio communications system

US7054663B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Johannes Frey · Bad Abbach, DE
• Markus Reinhardt · Neu-Ulm, DE
• Gottfried Schnabl · Ulm, DE
• Alexander Seeger · Straubing, DE
• Ingo Viering · Munich, DE

Key dates

• Filing date: Aug 1, 2002
• Grant date: May 30, 2006
• Expiry date: Aug 23, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/086
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method forms polar diagrams in a connection between a subscriber and a base station with an antenna arrangement in a radio communications system using multiple access methods. Antenna signals are associated with polar diagrams of the antenna arrangement by a common beam forming network. The common beam forming network is used to form weighted sum signals, which are passed as input signals to a user-specific beam forming unit. A selector which is arranged there takes from the input signals a user-specific subset Kc of signals, to which an eigen polar diagram forming algorithm is applied.