UWA Communication using MIMO OFDM

Various researches has been carried out to explore the effective ways of communication inside the water between the submarines or to collect information from sensors inside the water. A methodology proposed in this paper uses combination of Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) along with QAM and BPSK Modulation Schemes and LDPC Coding which increases the reliability of UWAC. Both Radio and Under Water Communication are almost similar. The difference lies in Density and Speed of Water. Transmission Speed of water is generally 1500 m/sec and its density is high.