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Blind high-resolution uplink synchronization of OFDM-based multiple access schemes

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1 Author(s)
Bolcskei, H. ; Dept. of Stat., Stanford Univ., CA, USA

One of the major problems in OFDM-based multiple access schemes is uplink synchronization. In this paper, we propose an algorithm for the blind estimation of multi-user OFDM synchronization parameters. Our method assumes that all users employ the same pulse shaping filter and uses second-order statistics only. The proposed approach provides high-resolution estimates in the sense of being able to resolve closely spaced time-frequency offsets. Finally, we provide simulation results demonstrating the performance of our algorithm

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Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on

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