No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Time reversal communication in a time-varying sparse channel
1. A. Song, M. Badiey, H. C. Song, W. S. Hodgkiss, M. Porter, and KauaiEx, “Impact of ocean variability on coherent underwater acoustic communications during KauaiEx,” J. Acoust. Soc. Am. 123, 856–865 (2008).
2. H. C. Song, W. A. Kuperman, and W. S. Hodgkiss, “Basin-scale time reversal communications,” J. Acoust. Soc. Am. 125, 212–217 (2009).
3. S. Cotter and B. Rao, “Sparse channel estimation via matching pursuit with application to equalization,” IEEE Trans. Commun. 50, 374–377 (2002).
4. M. Stojanovic, J. A. Capitovic, and J. G. Proakis, “Phase-coherent digital communications for underwater acoustic channels” IEEE J. Ocean. Eng. 19, 100–111 (1994).
5. H. C. Song and S. M. Kim, “Retrofocusing techniques in a waveguide for acoustic communications (L),” J. Acoust. Soc. Am. 121, 3277–3279 (2007).
6. J. Proakis, Digital Communications (McGraw-Hill, New York, 2001), Chaps. 6 and 11.
7. H. C. Song, W. S. Hodgkiss, and P. van Walree, “Phase-coherent communications without explicit phase tracking (L),” J. Acoust. Soc. Am. 128, 969–972 (2010).
8. A. Song, M. Badiey, H. C. Song, and W. S. Hodgkiss, “Impact of ocean depth on coherent underwater acoustic communications,” J. Acoust. Soc. Am. 128, 555–558 (2009).
9. W. Li and J. C. Preisig, “Esitmation of rapidly time-varying sparse channels,” IEEE J. Oceanic Eng. 32, 927–939 (2007).
Article metrics loading...
Recently time reversal (TR) communications has been extended to time-varying channels. The basic idea is to implement it on a block-by-block basis such that within each block the channel remains time-invariant and subsequently is updated using detected symbols (decision-directed mode). Using experimental data (12–20 kHz) collected in shallow water, this letter investigates three different block-based TR approaches: (1) without explicit phase tracking, (2) with phase tracking, and (3) exploiting channel sparsity. The TR approaches then are compared to a conventional adaptive multichannel equalizer. It is found that approach (3) generally provides the best performance and robustness.
Full text loading...
Most read this month