| 摘要 |
A synchronization sequence (preamble) that is known to the receiver forms as an integral part of packet -based digital communication systems. The first operation in such digital communication systems is the detection of the beginning of a valid signal (packet). The present invention provides a system, apparatus, and method for a scheme to robustly detect the preamble. The scheme of the present invention has the following advantages: it is robust to noise and interference, it provides the frequency error directly without any additional computation, it provides information that is necessary to position the FFT window for an OFDM based modulation, it provides a real part of the peak that can be used for frame synchronization, and finally, it provides the peak for burst detection purposes. |
