Patent ID: 7792224
Filing Date: 2010-09-07
Classification: H04B

Abstract:
1. A receiver for detecting interference in a wireless communication system, wherein a signal received from an antenna is fed on a signal path in an analog part to a subsequent digital part, said receiver comprising: a first branch-off element for deriving from the signal on the signal path a first detection signal; a second branch-off element for deriving from the signal on the signal path a second detection signal; a first attenuation element, arranged in the signal path between said first and said second branch-off element, having known attenuation values for a set of predefined frequencies; and, processing means for processing the first and the second detection signals such that a difference between the first and the second detection signals is comparable with a first threshold value, wherein the first threshold value depends on the known attenuation values of the element; a further branch-off element, the further branch-off element for deriving from the signal on the signal path a third detection signal; a further attenuation element with further known attenuation values for a further set of predefined frequencies, arranged in the signal path between the second and the further branch-off element; and, said processing means for processing the first, the second and the third detection-signal such that a difference between the second and the third detection signal is comparable with a second threshold value, wherein the second threshold value depends on the further known attenuation values of the further element.