METHOD AND APPARATUS FOR DETECTING TRANSMISSION OF A PACKET IN A WIRELESS COMMUNICATION SYSTEM

A method and apparatus for detecting transmission of a packet in a wireless communication system are disclosed. A packet includes a preamble which comprises multiple repetition of a training sequence. A signal is detected and the detected signal is correlated with a delayed version of the detected s...

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Bibliographische Detailangaben
Hauptverfasser:	TSAI KUNJU, YANG YONGWEN, OLESEN ROBERT L, LU I-TAI
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A method and apparatus for detecting transmission of a packet in a wireless communication system are disclosed. A packet includes a preamble which comprises multiple repetition of a training sequence. A signal is detected and the detected signal is correlated with a delayed version of the detected signal which is delayed by a predetermined delay time to generate a sequence of correlations. The correlations are normalized. A difference between a first normalized correlation and a second normalized correlation that are separated by the predetermined delay time is calculated. The difference is compared to a threshold. A transmission of the packet is detected based on the comparison. The first and second normalized correlations may be averaged over first and second averaging periods, respectively. A point generating a maximum difference may be identified, and packet synchronization may be performed based on the identified point.