US Patent Application 18198494. COMMUNICATION SYSTEM AND COMMUNICATION METHOD simplified abstract

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COMMUNICATION SYSTEM AND COMMUNICATION METHOD

Organization Name

NEC Corporation

Inventor(s)

Osamu Hasegawa of Tokyo (JP)

COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A simplified explanation of the abstract

This abstract first appeared for US patent application 18198494 titled 'COMMUNICATION SYSTEM AND COMMUNICATION METHOD

Simplified Explanation

The patent application describes a communication system where a hub station and multiple terminal stations can communicate simultaneously using the same channel. Here are the key points:

  • The hub station has a modulator that generates a transmission signal, including a known signal.
  • A filter in the hub station generates a cancellation signal to cancel interference.
  • The hub station combines the transmission signal and the cancellation signal using a combiner.
  • The combined signal is transmitted by a transmitter in the hub station.
  • An updater in the hub station calculates an adaptive filter that minimizes the power of an error signal related to the known signal.
  • Each terminal station has a calculator that calculates the error signal.
  • The terminal station transmits the error signal using a transmitter.
  • The filter in the hub station generates the cancellation signal by filtering the signal to be transmitted to another terminal station using the adaptive filter.


Original Abstract Submitted

A communication system in which a hub station and multiple terminal stations communicate at the same time using the same channel, wherein: the hub station has a modulator that generates a transmission signal including a prescribed known signal, a filter that generates a cancellation signal for cancelling interference, a combiner that combines the transmission signal and the cancellation signal, a transmitter that transmits the combined signal, and an updater that calculates an adaptive filter minimizing a power of an error signal relating to the known signal; each of the terminal stations has a calculator that calculates the error signal, and a transmitter that transmits the error signal; and the filter generates a cancellation signal generates the cancellation signal by performing a filtering process by the adaptive filter on the signal to be transmitted to another of the terminal stations.

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