Stochastic Network Calculus for various Fading techniques in Underwater Wireless Communication

摘要

Acoustics Communication finds numerous applications and growing in popularity, complexity and capabilities. Acoustic waves propagation plays important role for effective Underwater Wireless Communication. Underwater acoustic signals used for communications are prone to fading. Unlike radio waves, acoustic waves experience several losses like; signal loss, fading, path loss, and Doppler spread in water. To model any communication medium, mathematical tools play a vital role. Real-time underwater wireless network applications require good Quality-of-Service guarantees such as low packet delay and small backlog. Modern communication networks are growing rapidly and measuring its QoS needs a specialized analytical tools. To overcome these, Stochastic Network Calculus (SNC) has given rise to the optimism that it can emerge as an elegant mathematical modelling tool for assessing current network performance especially for use in underwater communication. While SNC is a relatively new theory, it is gaining increasing interest and popularity and researchers have also started applying SNC to performance analysis of various systems. In this work, we have developed an underwater acoustic wireless channel subjected to different fading techniques such as; Rayleigh, Rician, Nakagami, Weibull, AWGN, Gilbert-Elliot. In this work, we have derived stochastic service guarantees for delay requirements, violation probabilities, delay bound and traffic burstiness in the acoustic Physical channel. Using this model we have also derived the stochastic performance for delay and backlog bounds.