OFDM

AquaSeNT’s acoustic modem family employs orthogonal frequency division multiplexing (OFDM) technologies that are widely used in radio communication systems, for example, WiFi and 4G cellular networks. OFDM is a multicarrier technique: data is encoded on many sub-carrier frequencies, allowing information to be transmitted in parallel as opposed to the slower serial communication of traditional technology. The sub-carrier signals are mathematically orthogonal to each other: they are selected to minimize interference with adjacent frequencies, significantly improving the ability to cope with severe channel conditions including frequency selective fading due to multipath. Advanced error correction algorithms enhance the modem’s ability to achieve high performance communication.

 
  • The AquaSeNT networked OFDM acoustic modem adds an on-board processor with networking firmware and software.
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  • The AquaSeNT networked OFDM acoustic modem adds an on-board processor with networking firmware and software.

 

DOWNLOAD OFDM SPECIFICATION SHEET