Implications of simplifying SINR in underwater acoustic networks

Link analysis in a network must consider the effects of both noise and interference on signal quality. Because absorption and noise are frequency dependant the levels of a signal, interference and noise vary across the channel bandwidth. Previous analysis of underwater acoustic link capacity addressed signal-to-noise ratio across the signal bandwidth, we extend such analysis to include interference. At high frequencies links are limited by low signal levels that result from absorption, but at low frequencies such links are more usually limited by interference. As a result, transmitter power could be reallocated from low frequencies to high frequencies to improve overall throughput.