Underwater radio communication system, transmitting unit, receiving unit, and underwater radio communication method
AssigneeNEC Corporation
InventorsShuhei YOSHIDA, Masahiro TANOMURA
Life of this patent
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Abstract
In order to provide an underwater radio communication system which stably uses wideband modulated signal to communicate with electromagnetic waves, this underwater radio communication system 1, for communicating underwater between a transmission unit 10 and a receiving unit 20 with electromagnetic waves, has a distortion compensation unit 12 which compensates for distortion resulting from propagation in water in accordance with the frequency of the electromagnetic waves.
Claims11
An underwater radio communication system for communicating underwater between a transmitting unit and a receiving unit with electromagnetic waves, the underwater radio communication system comprising:
- a distortion compensation unit configured to compensate for a distortion resulting from propagation in seawater in accordance with a frequency of the electromagnetic waves.
A transmitting unit that is for use in an underwater radio communication system and that communicates in water with a receiving unit with electromagnetic waves, the transmitting unit comprising:
- a first distortion compensation unit configured to apply, to a transmitting signal, a pre-distortion for compensating for a distortion due to an electrical conductivity of seawater.
A receiving unit that is for use in an underwater radio communication system and that communicates with transmitting means underwater with electromagnetic waves, the receiving unit comprising:
- a second distortion compensation unit configured to compensate for a distortion due to an electrical conductivity of seawater in a received signal.
An underwater radio communication method for communicating underwater with electromagnetic waves, the underwater radio communication method comprising:
- applying, to a transmitting signal, a pre-distortion for compensating for a distortion due to an electrical conductivity of seawater.
Dependencies are inferred from the claim text.