A Novel Timing Estimation Method for OFDM Systems over Multipath Fading Channels
A Novel Timing Estimation Method for OFDM Systems over Multipath Fading Channels
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发表时间：
2005
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通讯作者：
W. Wenbo
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作者：
W. Wenbo
在正交频分复用（OFDM）系统中，在多径衰落信道中，循环前缀（CP）后的能量差和集合相关特性不会被破坏。本文将这两种方法的优点进行了优化结合，提出了一种新的时间同步方法。仿真结果表明，该方法在多径衰落信道下具有良好的定时估计性能。该方法对频偏具有较好的鲁棒性，且随着多普勒频移的增大，性能将进一步提高。
In orthogonal frequency division multiplexing (OFDM) system, the properties of cyclic prefix (CP) energy difference and set correlation are not destroyed at the back of CP in multipath fading channels. Optimum combined with the two merits, a new time synchronization method is proposed in this paper. Simulation results demonstrate that the proposed method has good timing estimation performance over multipath fading channels. And the proposed method is robust to the frequency offset and the performance will be further improved with the increasing of Doppler frequency shift.