| 摘要 |
The present invention relates to methods and devices for receiving signals in a Wireless Local Area Network (wireless LAN, or WLAN), particularly in the case that the signals are Orthogonal Frequency Division Multiplexed (OFDM) signals. A signal detection apparatus is disclosed for an OFDM receiver, having: means for determining the correlation of corresponding samples of two received preamble symbol samples, one said sample delayed a predetermined duration with respect to the other; signal detection being indicated when the correlation is greater than or equal to a threshold; wherein the threshold is dependent on the signal power of the received preamble symbols.
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