J.M.F. Moura, Yuanwei Jin, Jian-Gang Zhu, Yi Jiang, Daniel Stancil, Ahmet Cepni, and Benjamin Henty. Waveform Shaping for Time Reversal Interference Cancellation: A Time Domain Approach. In Conference Record of the Thirty-Ninth Asilomar Conference on Signals, Systems and Computers, pp. 665–669, November 2005.
In this paper, we present a time domain interference cancellation scheme using time reversal, in time reversal, a signal, for example, transmitted by a weak source through a dispersive medium, is received by an array, time reversed, power normalized, and retransmitted through the same medium. If the channel is reciprocal, and the clutter is sufficiently rich, the retransmitted waveform refocuses on the original source. This focusing effect implies that a significant portion of the received signal energy concentrates in a very small time/space, support compared with the rest of the signal components. In this paper, we consider the opposite problem: rather than refocusing, we reshape the retransmitted waveform to reduce the returned echo, i.e., to mitigate the clutter returns. Proof of concept is provided using experimental electromagnetic data and wave propagation simulations.
@CONFERENCE{henty_ssc_2005,
author = {J.M.F. Moura and Yuanwei Jin and Jian-Gang Zhu and Yi Jiang and Daniel
Stancil and Ahmet Cepni and Benjamin Henty},
title = {Waveform Shaping for Time Reversal Interference Cancellation: A Time
Domain Approach},
booktitle = {Conference Record of the Thirty-Ninth Asilomar Conference on Signals,
Systems and Computers},
year = {2005},
pages = {665-669},
month = nov,
abstract = {In this paper, we present a time domain interference cancellation
scheme using time reversal, in time reversal, a signal, for example,
transmitted by a weak source through a dispersive medium, is received
by an array, time reversed, power normalized, and retransmitted through
the same medium. If the channel is reciprocal, and the clutter is
sufficiently rich, the retransmitted waveform refocuses on the original
source. This focusing effect implies that a significant portion of
the received signal energy concentrates in a very small time/space,
support compared with the rest of the signal components. In this
paper, we consider the opposite problem: rather than refocusing,
we reshape the retransmitted waveform to reduce the returned echo,
i.e., to mitigate the clutter returns. Proof of concept is provided
using experimental electromagnetic data and wave propagation simulations.},
doi = {10.1109/ACSSC.2005.1599834},
file = {henty_ssc_2005.pdf:me/henty_ssc_2005.pdf:PDF},
owner = {henty},
timestamp = {2006.12.29},
url = {http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1599834}
}
Generated by bib2html.pl (written by Patrick Riley ) on Wed Feb 10, 2010 12:02:04