| 摘要 |
<p>A method for detecting interference in OFDM system is provided. The method includes: Receiving OFDM signal and its orthogonal signal transmitted by the transmitter and interference signal transmitted by other system; Acquiring remainder signal through correlating the OFDM signal and its orthogonal signal; Detecting the power of the remainder signal and attaining the interference signal from other system. Moreover, a device and system that correspond to the above method is provided. The method has following merits: First, because the method does not need channel estimation, the error of the channel estimation has no impact on the effect of the detection. Second, the interference detecting of different distributed sampling points in time-domain or frequency-domain can adapt to different demands of accuracy. Third, the accuracy of the detection can be improved by multi-group data. Fourth, data communication and interference detection can be carried out simultaneous and the communication does not need to be interrupted; Last, the practicability can be improved by combining the other signal process module.</p> |
