Orthogonal Frequency Division Multiplexing (OFDM) is a digital modulation technique widely used in modern communication systems to transmit data over radio waves or optical fibers. OFDM is particularly well-suited for high-data-rate communication in various applications, including wireless communication, broadband internet, digital television, and digital audio broadcasting. The key feature of OFDM is its ability to divide a high-rate data stream into multiple parallel lower-rate substreams, each of which is transmitted simultaneously on separate subcarriers.
Acoustic data transmission with the Orthogonal Frequency Division Multiplexing (OFDM) signal has been demonstrated using a Distributed Acoustic Sensor (DAS) based on Phase-sensitive Optical Time-Domain Reflectometry (?-OTDR).
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