Receiving Apparatus

Organization Name

Nippon Telegraph and Telephone Corporation

Inventor(s)

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.