18374863. COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM simplified abstract (NEC Corporation)
Contents
- 1 COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Original Abstract Submitted
COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
Organization Name
Inventor(s)
COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18374863 titled 'COMMUNICATION SYSTEM, RECEIVER, COMPENSATION AMOUNT CALCULATION APPARATUS, DISTORTION COMPENSATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
Simplified Explanation
The patent application describes a distortion compensation filter with adaptively controlled filter coefficients to compensate for distortion in a reception signal obtained through coherent reception of a transmitted signal. The filter includes a group delay ripple calculation device, a feedback calculation unit, and one or more filters with phase compensation function.
- The distortion compensation filter adaptively controls filter coefficients to compensate for distortion in reception signals.
- A group delay ripple calculation device calculates group delay and ripple in the reception signal based on filter coefficients.
- The feedback calculation unit calculates phase response based on the group delay ripple and feeds it back to filters with phase compensation function.
- The filters then partially compensate for the group delay ripple before the adaptive equalization filter in the receiver.
Potential Applications
This technology can be applied in:
- Wireless communication systems
- Radar systems
- Satellite communication systems
Problems Solved
This technology solves the following problems:
- Distortion in reception signals
- Group delay ripple in coherent reception systems
Benefits
The benefits of this technology include:
- Improved signal quality
- Enhanced reception performance
- Reduction of distortion effects
Potential Commercial Applications
Potential commercial applications of this technology include:
- Telecommunication equipment
- Signal processing devices
- Coherent reception systems
Possible Prior Art
One possible prior art for this technology could be adaptive equalization filters used in communication systems to compensate for channel distortions.
Unanswered Questions
How does the adaptive control of filter coefficients improve reception performance?
The adaptive control of filter coefficients allows for real-time adjustments based on the calculated group delay ripple, leading to more accurate compensation for distortion in reception signals.
What are the specific parameters used to calculate the group delay ripple in the reception signal?
The group delay ripple calculation device uses the filter coefficients of the distortion compensation filter to calculate the group delay ripple, but the exact mathematical formula or algorithm used for this calculation is not specified in the abstract.
Original Abstract Submitted
A distortion compensation filter whose filter coefficient is adaptively controlled compensates for a distortion included in a reception signal obtained by performing coherent reception of a signal transmitted from a transmitter in a receiver. A group delay ripple calculation device calculates a group delay included in the reception signal based on a filter coefficient of a distortion compensation filter and calculates group delay ripple from the calculated group delay. The feedback calculation unit calculates a phase response based on the calculated group delay ripple. The feedback calculation unit feeds the calculated phase response back to one or more filters having a phase compensation function disposed in a stage before an adaptive equalization filter included in the receiver, and causes one or more filters to at least partially compensate for the group delay ripple.
