PROJECT TITLE :

Throughput of Underwater Wireless Ad Hoc Networks With Random Access: A Physical Layer Perspective

ABSTRACT:

Due to frequency selectivity, long propagation delay caused by low speed of sound, and fast channel variation, multiple-access protocols that employment well in terrestrial networks could not perform additionally in underwater atmosphere. We take a physical-layer approach and investigate frequency-selective underwater channels with uncoordinated multiple bursty transmissions. We have a tendency to 1st derive the statistical distribution of the interference as seen by a typical receiver, considering burstiness of interference transmissions, packet length, and spatial distributions of the interferers. We then derive expressions for the chance density functions of the frequency-dependent signal-to-interference-and-noise ratio (SINR). Expressions for the outage likelihood of a typical link between 2 nodes are obtained in the frequency-selective scenarios and also the flat-fading special cases. The outage probabilities rely on the bursty transmission chance and the quantity of interfering transmitters. Previous expressions in the literature on outage likelihood for flat fading channels and interference-restricted systems will be recovered as special cases of our results. Analysis on the throughput of network is provided. Optimization over the quantity of nodes and bursty transmission probability is performed to maximise the network throughput. Simulation results are presented, that validate the theoretical results and illustrate typical features of the interference in an underwater network.


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