Inter-carrier interference mitigation for underwater acoustic communications
Daly, Erica Lynn
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https://hdl.handle.net/2142/14626
Description
Title
Inter-carrier interference mitigation for underwater acoustic communications
Author(s)
Daly, Erica Lynn
Issue Date
2010-01-06T16:20:04Z
Director of Research (if dissertation) or Advisor (if thesis)
Singer, Andrew C.
Doctoral Committee Chair(s)
Singer, Andrew C.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Orthogonal frequency-division multiplexing (OFDM)
inter-carrier interference (ICI)
underwater acoustic communication
Abstract
Communicating at a high data rate through the ocean is challenging. Such communications must be acoustic in order to travel long distances. The underwater acoustic channel has a long delay spread, which makes orthogonal frequency division multiplexing (OFDM) an attractive communication scheme. However, the underwater acoustic channel is highly dynamic, which has the potential to introduce significant inter-carrier interference (ICI). This thesis explores a number of means for mitigating ICI in such communication systems. One method that is explored is directly adapted linear turbo ICI cancellation. This scheme uses linear filters in an iterative structure to cancel the interference. Also explored is on-off keyed (OOK) OFDM, which is a signal designed to avoid ICI.
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