한국해양대학교

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빔 형성을 이용한 수중음향통신 성능 개선

Title
빔 형성을 이용한 수중음향통신 성능 개선
Alternative Title
Performance Improvement of Underwater Acoustic Communication based on beamforming
Author(s)
엄민정
Publication Year
2014
Publisher
한국해양대학교
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175111
http://repository.kmou.ac.kr/handle/2014.oak/9268
Abstract
The underwater environment is characterized by doubly spread channel in the time-variant Doppler shift and delay-time spreads due to multiple paths. The characteristic of doubly spread channel leads to inter-symbol interference. Various techiques such as time-reversal processing, spatial diversity, phase estimator, and equalizer are used to mitigate inter-symbol interference. In this thesis, a spatial filter based on the conventional beamforming is proposed as a method to mitigate the inter-symbol interference that is generated in time-varying multipath channels. The proposed technique realizes coherent communications by steering the direction of the desired signals and improves the performance of underwater acoustic communication by the Signal-to-Interference plus Noise Ratio improvement achieved by the array gain.
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해양공학과 > Thesis
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