Patent ID: 6208695
Filing Date: 2001-03-27
Classification: H04L

Abstract:
A method for the reception of multicarrier signals which are arranged in frames with a synchronisation signal and at least one reference symbol per frame, comprising the steps of:performing a frequency scanning or signal searching process;detecting the synchronisation signal;estimating a reference symbol time window position and computing an FFT using said reference symbol time window position;demodulating the FFT output signal and carrying out within a frequency section, which preferably is shorter than the length of said FFT, a correlation using a generic reference symbol stored in the receiver;calculating a characteristic value from correlation step values;determining the multicarrier signal as being a system-conform signal if said characteristic value exceeds a pre-defined threshold and in such case further decoding said multicarrier signal; anddetermining the multicarrier signal as being not a system-conform signal if said characteristic value does not exceed said pre-defined threshold and in such case starting again or continuing said scanning or searching process.