【摘要】 OFDM(Orthogonal Frequency Division Multiplexing)技术的抗多径衰落能力可以很好的改善信号在水声信道中的传播性能,同步算法是OFDM技术在水声通信中得以运用的重要环节。通过分析基于CAZAC序列的Guangling Ren和Seung同步算法的特性,并将这两种算法用于水声通信的性能分析与比较。仿真和分析表明,这两种同步算法均可以较好地应用于水声通信中,并且在多径传播时延严重的情况下Seung算法同步性能优于Guangling Ren同步算法。更多还原

【Abstract】 Anti-multipath fading performance of OFDM(Orthogonal Frequency Division Multiplexing) technology can be a very good improvement in the signal transmission in underwater acoustic channels,and the synchronization algorithm is an important part of applying OFDM in underwater acoustic communication.This thesis analyzes the characteristics of Guangling Ren and Seung synchronization algorithms which are structured based on CAZAC sequence and performance simulation on these algorithms in the application of underwater acoustic communication are conducted.Simulation and analysis showed that both synchronization algorithms could be well used in underwater acoustic communications,and in the case that multi-path propagation delay is severe,simultaneous performance of Seung algorithm is better than Guangling Ren one.更多还原