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Issue:
Combined Doppler estimation and compensation of OFDM in underwater communication
Author(s):
CUI Jian
,
HUANG Jian-guo
Pages:
129
-
131,134
Year:
2008
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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