[Retracted] Orthogonal Frequency Division Multiplexing Underwater Acoustic Communication System with Environmental Cognition Ability

<div>Frequency utilization rate of the different systems. (a) Frequency utilization rate in channel 1. (b)Frequency utilization rate in channel 2.</div>

Security and Communication Networks

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Figure 10

Figure 10: [Retracted] Orthogonal Frequency Division Multiplexing Underwater Acoustic Communication System with Environmental Cognition Ability 