| 摘要 |
<p>A synchronization system for an input signal having a plurality of OFDM symbols, each symbol having at least one guard interval, includes correlation means for providing a product of the input signal with a complex conjugate of the input signal delayed for a predetermined period, arithmetic means for obtaining an argument value of the product, and detection means for detecting a transition in phase values of an output of the arithmetic means, wherein the transition occurring when the phase value in one portion of the symbol duration is substantially smaller than another portion of the symbol duration. The system additionally includes a power estimator for detecting an OFDM symbol frame of the input signal with reference to a predetermined threshold, and means for estimating fractional carrier frequency offset. <IMAGE></p> |
