Initial Ranging and Detection Enhacement and Time Offset Calculation for Synchronization in 802.16e Systems by Hybrid Detection Method
M Usman Afzal, Jong Min Park, Sung Ho Cho · 정보 및 제어 심포지엄 논문집 · 2008
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.