Method for eliminating blocking signals at the reception chain by adjusting the frequency of the local oscillator

摘要

The invention relates to a multicarrier receiver (301) in a wireless telecommunication network, the multicarrier receiver comprising:
- receiving means (302) for receiving a radio frequency spectrum, the radio frequency spectrum comprising a radio frequency signal (104);
- a local oscillator (304) for generating a local oscillator frequency signal (106; 110; 202);
- a mixer (308) for mixing the radio frequency signal with the local oscillator frequency signal to an intermediate frequency signal (112; 118; 206; 210);
- signal processing means (310) for processing the intermediate frequency signal;
- a filter (306) for filtering the intermediate frequency spectrum such that only a sub-spectrum (100) of the radio frequency spectrum is processed by the signal processing means;
- blocking signal detection means (312) for detecting a frequency of a blocking signal (102; 116; 200) within the sub-spectrum;
- local oscillator frequency adjusting means (312) for adjusting the local oscillator frequency such that the frequency of the blocking signal lies outside the sub-spectrum of the radio frequency spectrum.