METHOD AND AN APPARATUS FOR DETECTING SIGNALS IN A WIRELESS LOCAL AREA NETWORK SYSTEM CAPABLE OF IMPROVING THE EFFICIENCY OF A RADIO RESOURCE

摘要

PURPOSE: A method for detecting signals in a wireless local area network system and an apparatus thereof are provided to reduce total packet errors due to a HT mode detection error by efficiently and accurately detecting HT SIG field signals.;CONSTITUTION: A digital signal is converted by receiving a radio signal. FFT(Fast Fourier Transform) is performed for a digital signal. A channel compensation process is performed for a FFT result. A constellation demapping process is performed for a channel compensation result. The constellation demapping result is decoded. It is determined whether the radio signal is a modulated signal by Q-BPSK(Quadrature Binary Phase Shift Keying) constellation through the FFT result. The determination process is performed based on autocorrelation between the FFT result of the radio signal and the FFT result of an L-SIG(Legacy Signal).;COPYRIGHT KIPO 2012