Channel simulator for mobile systems

USRE40986E1 · kind E1 · reissue

Inventors

• Svante Widell · Poing, DE
• Mats Olof Winroth · Poing, DE

Key dates

• Filing date: Oct 16, 1998
• Grant date: Nov 17, 2009
• Expiry date: Oct 16, 2018

Classification

• Technology area (CPC —): General

Abstract

A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a radio channel. The device includes two or more flexible delay modules, and each module is arranged to emulate a tap and a continuously varying tap attenuation can be attained to describe the variation of the radio channel over the time. The modules may be realized in SAW-technology, and continuously varying tap attenuation may be achieved by the utilization of PIN-diode attenuators.