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Combined Doppler estimation and compensation of OFDM in underwater communication
Author(s): 
Pages: 129-131,134
Year: Issue:  1
Journal: COMPUTER ENGINEERING AND APPLICATIONS

Keyword:  OFDM多普勒频移循环前缀训练序列;
Abstract: 正交频分复用(OFDM)技术已经应用于水声通信中,是一种高速传输的方法.但是OFDM的传输对于子载波正交性的要求很高,所以水声通信中存在的严重多普勒频率偏移限制了OFDM技术在水声通信中的应用.分析了适合于收发双方的多普勒估计与补偿技术,提出了综合多普勒补偿方法,即综合利用循环前缀法和利用训练序列进行多普勒估计与补偿.结合实际湖试水声信道进行实验,结果验证了该方法有效地降低了误码率,优于传统的多普勒估计与补偿方法.
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