Receiver apparatus, transmitter apparatus and communication system for detecting a narrowband interference in a multi-carrier receiver signal

摘要

A receiver apparatus (100) for detecting narrowband interference in a multi-carrier receive signal, the multi-carrier receive signal being comprised of a plurality of sub-carriers and having a structure of sequential time frames. The receiver apparatus (100) comprises a means (110) for transforming a first composed receive signal, which is based on a first transmit signal having subcarriers with a predefined amplitude, to the frequency domain to obtain a first composed receive signal spectrum and for transforming a second composed receive signal, which is based on the first transmit signal, to the frequency domain to obtain a second composed receive signal spectrum, the first and second composed receive signals being composed of multi-carrier receive signals. The receiver apparatus (100) further comprises a means (120) for detecting narrowband interference by comparing a spectral difference between the first composed received signal spectrum and the second composed receive signal spectrum or a shifted version of the second composed receive signal spectrum to a detection threshold. The receiver apparatus (100) further comprises a means (130) for cancelling a subcarrier in the first or second composed signal spectrum, if the intensity of the subcarrier of the spectral difference is above the detection threshold.