Notice of RetractionApplication of Turbo code in underwater acoustic communication

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Long multi-path spreads and rapid time variations are the characteristic of underwater Acoustic channel. These characteristic limits the data rate of reliable communication systems, and require sophisticated equalization and coding technique, so Turbo coder/decoder is introduced. In this paper, a model including time-varying fading, multi-path and additive noise for underwater acoustic channel is built; some improved algorithms for turbo decoding are used in it. Simulation results show that: signal noise ratio at the range of that accepted by underwater acoustic communication, the performance of turbo is excellent. Then the sophisticated equalization is used with turbo coding technique together, the performance of communication is improved obviously.