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M Usman Afzal(우스만아프잘),Jong Min Park(박종민),Sung Ho Cho(조성호) 대한전기학회 2008 정보 및 제어 심포지엄 논문집 Vol.2008 No.1
Initial Ranging Detection and Synchronization is suggested for IEEE 802.16e OFDMA Systems. However ranging is vulnerable to the channel selectivity and other user's interference at low SNR. This paper presents enhanced ranging scheme that improves ranging detection process using the combine multiple FFT blocks and cope with channel selectivity and other user's interference at low SNR. Based on the ranging detection timing offset is calculated for synchronization.