PROJECT TITLE :
Underwater Acoustic Network Simulation With Lookup Tables From Physical-Layer Replay
An underwater acoustic network simulation methodology is presented that's primarily based on lookup tables (LUTs) with physical-layer error ratios. These LUTs are prepared with a validated replay channel simulator, that is here driven by channel measurements from the Kauai Acomms MURI 201one (KAM11) experiment. 3 physical-layer candidates are considered: a coherent single-carrier scheme, a coherent multicarrier theme, and an incoherent scheme. The 3 modulation schemes are operated at a fastened message size and at four completely different knowledge rates. Low rates are additional strong to noise, interference, and channel dispersion, however additionally additional at risk of collisions in a network with busy traffic, as a result of the packets are longer. Error statistics for colliding packets are measured and are incorporated within the network simulator as collision LUTs. Example simulations are presented for a reduced flooding protocol with or while not retransmissions. The results demonstrate how retransmissions create a tradeoff between performance at high and low traffic load. The simplest network performance is obtained if the highest data rate is chosen that yields a fairly well-connected network. Collision avoidance is a lot of important than the extended connectivity offered by low-rate signaling. On the opposite hand, at a given bit rate, a physical-layer theme with extended connectivity however relatively weak links is shown to outperform a theme with stronger links over fewer connections.
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