Title :
A Simple Time Synchronization Method for Underwater Communication Receivers
Author :
Zhang, Guosong ; Hovem, Jens M. ; Dong, Hefeng ; Reinen, Tor A.
Author_Institution :
Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
A method is developed for acoustic time synchronization/pulse acquisition suitable for use in reverberant multipath environments. This scheme uses two identical broadband synchronization pulses for the acquisition, and it is motivated by passive phase conjugation. The first pulse is used as a preamble pulse and replaces the replica signal later to correlate with the second pulse. Within the coherent time interval, a fixed threshold is used to measure the correlation coefficient between the first pulse and the second one, so it is easy and robust for the receiver to make a decision in synchronization. The method overcomes the difficulties of presetting a threshold for receivers to acquire synchronization automatically.
Keywords :
multipath channels; radio receivers; synchronisation; underwater acoustic communication; acoustic time synchronization; broadband synchronization pulses; pulse acquisition; reverberant multipath environments; simple time synchronization; underwater communication receivers; Acoustic pulses; Autocorrelation; Concurrent computing; Doppler shift; Frequency synchronization; Interference; Pulse measurements; Reflection; Timing; Underwater communication; correlation; passive phase conjugation; synchronization; underwater communication;
Conference_Titel :
Sensor Technologies and Applications, 2009. SENSORCOMM '09. Third International Conference on
Conference_Location :
Athens, Glyfada
Print_ISBN :
978-0-7695-3669-9
DOI :
10.1109/SENSORCOMM.2009.51
