Lei Wan
ABSTRACT
Adaptive modulation and coding (AMC) technique can be applied in underwater acoustic communications to improve the system data rate as well as the robustness in varying channel conditions. In this paper, we demonstrate an OFDM based AMC operation using a number of transmission modes with different data rates. We propose to use the effective signal-to-noise ratio (SNR) computed after channel estimation and channel decoding as performance indicator for mode switching, instead of input SNR and pilot SNR. Real time AMC tests have been conducted in a recent sea experiment.
- A. Goldsmith, Wireless Communications. Cambridge University Press, 2005. Google Scholar
Cross Ref
- S. Mani, T. M. Duman, and P. Hursky, "Adaptive Coding/Modulation for shallow-water UWA communications," in Acoustics'08 Conference, Paris, France, July 2008.Google Scholar
- B. Tomasi, L. Toni, L. Rossi, and M. Zorzi, "Performance study of variable-rate modulation for underwater communications based on experimental data," in Proc. of MTS/IEEE OCEANS Conference, Seattle, WA, USA, Sept. 20-23, 2010, pp. 1--8.Google Scholar
- A. Radosevic, R. Ahmed, T. M. Duman, J. G. Proakis, and M. Stojanovic, "Adaptive OFDM modulation for underwater acoustic communications: Design considerations and experimental results," IEEE Journal of Oceanic Engineering, 2013 (to appear).Google Scholar
- Underwater OFDM Modem, http://www.aquasent.com/.Google Scholar
- H. Yan, L. Wan, S. Zhou, Z. Shi, J.-H. Cui, J. Huang, and H. Zhou, "DSP based receiver implementation for OFDM acoustic modems," Elsevier Journal on Physical Communication, vol. 5, no. 1, pp. 22--32, 2012.Google ScholarCross Ref
Index Terms
- Field tests of adaptive modulation and coding for underwater acoustic OFDM
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