Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="139416.fig.0011a" src="https://static.hindawi.com/articles/jece/volume-2012/139416/figures/139416.fig.0011a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>I-Q Constellation at EQ-O/P</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="139416.fig.0011b" src="https://static.hindawi.com/articles/jece/volume-2012/139416/figures/139416.fig.0011b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>I-Q Constellation at EQ-O/P: Iter-1</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="139416.fig.0011c" src="https://static.hindawi.com/articles/jece/volume-2012/139416/figures/139416.fig.0011c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>I-Q Constellation at EQ-O/P: Iter-2</td></tr></table></td></tr></table>

<table>Effect of weighting coefficients on estimation.</table>

Journal of Electrical and Computer Engineering

fig11

Figure 11

Figure 11: Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems 