Design of an Underwater Acoustic MIMO OFDM System Using NI LabView and CompactDAQ
Recently, the orthogonal frequency division multiplexing (OFDM) technology is receiving increasing attention in underwater acoustic (UA) communications. This paper presents the design of a real time UA OFDM communication system with multiple transducers and hydrophones using the National Instruments CompactDAQ device and LabView software. The purpose of this system is to provide academic researchers a flexible and reconfigurable multiple input multiple output (MIMO) UA communication transceiver with an open architecture to conveniently test and validate the performance of their MIMO transceiver algorithms, which is missing in the literature. The system design, including both the transmitter and receiver, is discussed. The performance of this MIMO UA communication system is verified through a UA communication experiment conducted in the Canning River, Western Australia. Compared with existing modems, the proposed implementation simplifies the prototype design and supports MTMO functions.
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