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首页> 外文会议>Proceedings of 2011 international conference on communication technology and application >DOPPLER DIVERSITY TECHNIQUE BASED ON PILOT-AIDED CHANNEL ESTIMATION FOR OFDM WIRELESS MOBILE COMMUNICATION
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DOPPLER DIVERSITY TECHNIQUE BASED ON PILOT-AIDED CHANNEL ESTIMATION FOR OFDM WIRELESS MOBILE COMMUNICATION

机译：基于导频信道估计的OFDM无线移动通信多普勒多样性技术

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摘要

In the previous works on the traditional Doppler diversity algorithms, it is always assumed that the channel state information is perfect known at the receiver. However, this is not the case in real world. Hence, a novel Doppler diversity technique based on pilot-aided channel estimation for OFDM systems is studied in this paper. The performance of the proposed algorithm decreases if the value of normalized frequency shift is fixed as that in the traditional algorithm. But for the changeable value of normalized frequency shift, the performance is increased. Hence a method how to choose the optimum normalized Frequency shift based on pilot-aided channel estimation is researched in this paper. Finally, the simulation is evaluated to verify the analysis results.
机译：在先前关于传统多普勒分集算法的著作中，始终假设信道状态信息在接收机处是完美已知的。但是，实际情况并非如此。因此，本文研究了一种基于导频信道估计的OFDM系统多普勒分集新技术。如果归一化频移的值固定不变，则该算法的性能会下降。但是对于归一化频移的可变值，可以提高性能。因此，本文研究了一种基于导频辅助信道估计的最优归一化频移选择方法。最后，对仿真进行评估以验证分析结果。

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