18542340. Receiving Apparatus simplified abstract (Nippon Telegraph and Telephone Corporation)

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Receiving Apparatus

Organization Name

Nippon Telegraph and Telephone Corporation

Inventor(s)

Yosuke Fujino of Musashino-shi (JP)

Hiroyuki Fukumoto of Musashino-shi (JP)

Kazunori Akabane of Musashino-shi (JP)

Receiving Apparatus - A simplified explanation of the abstract

This abstract first appeared for US patent application 18542340 titled 'Receiving Apparatus

The patent application describes a receiving apparatus that utilizes sound waves propagating in water for signal reception and processing.

  • The apparatus includes multiple receivers to capture signals based on underwater sound waves.
  • It incorporates multiple Finite Impulse Response (FIR) filters to perform waveform operations on the received signals.
  • A combiner merges the output signals from the FIR filters for enhanced signal processing.
  • A filter coefficient calculation portion determines tap coefficients for the FIR filters to minimize errors in the combined output signals.
  • The FIR filters have a shorter tap length compared to the delay spread range between the arrival times of direct and delayed waves of the sound waves.

Potential Applications: - Underwater communication systems - Sonar technology for marine navigation - Oceanographic research equipment

Problems Solved: - Efficient signal processing in underwater environments - Minimization of errors in combined signals - Enhanced reception and processing of underwater sound waves

Benefits: - Improved accuracy in underwater signal reception - Enhanced performance of underwater communication systems - Increased reliability in marine navigation and research

Commercial Applications: Title: "Underwater Communication Systems: Enhancing Signal Processing for Marine Applications" This technology can be utilized in: - Military submarines for communication and navigation - Underwater research vessels for data collection - Commercial fishing boats for improved sonar capabilities

Prior Art: No specific information on prior art related to this technology is provided in the abstract.

Frequently Updated Research: There is ongoing research in the field of underwater signal processing and communication systems, with advancements in FIR filter technology and underwater acoustic signal processing techniques.


Original Abstract Submitted

A receiving apparatus includes: M receivers configured to receive signals based on sound waves propagating in water; M FIR filters configured to perform waveform operation on the signals received by the receivers; a combiner configured to combine output signals of the M FIR filters; and a filter coefficient calculation portion configured to calculate a tap coefficient of the M FIR filters so as to reduce an error of the output signals combined by the combiner. The M FIR filters have a tap length that is shorter than a delay spread that is a possible range between a time of arrival of a direct wave and a time of arrival of a delayed wave of the sound waves.

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