Abstract: A signal transmitting method suitable for a MU-MIMO environment and achieving a high performance with low complexity is provided. The signal transmitting method includes: splitting each message stream into a common message stream and a private message stream; combining a plurality of common message streams for the plurality of receivers to generate a common stream; encoding the common stream and private message streams for the plurality of receivers to generate an encoded common stream and encoded private message streams; precoding the encoded common stream and the encoded private message streams to adjust amplitudes and phases of symbols such that power is distributed between the encoded common stream and the encoded private message streams and generate precoded signals; and converting the precoded signals into a plurality of RF signals, adjusting phases of the plurality of RF signals, and outputting the phase-adjusted RF signals through a plurality of MIMO antennas.

Abstract: A signal transmitting method suitable for a MU-MIMO environment and achieving a high performance with low complexity is provided. The signal transmitting method includes: splitting each message stream into a common message stream and a private message stream; combining a plurality of common message streams for the plurality of receivers to generate a common stream; encoding the common stream and private message streams for the plurality of receivers to generate an encoded common stream and encoded private message streams; precoding the encoded common stream and the encoded private message streams to adjust amplitudes and phases of symbols such that power is distributed between the encoded common stream and the encoded private message streams and generate precoded signals; and converting the precoded signals into a plurality of RF signals, adjusting phases of the plurality of RF signals, and outputting the phase-adjusted RF signals through a plurality of MIMO antennas.

Abstract: The present invention relates to an apparatus and method for detecting an oil spill by using a satellite image, an apparatus for detecting an oil spill by using a satellite image, the apparatus including: a satellite image reception unit configured to receive a satellite image of a predicted oil spill area; a satellite image correction unit configured to correct the satellite image by compensating for the influences of the atmosphere and waves; a spectral angle mapper image generation unit configured to generate a spectral angle mapper image; a spectral vector distance image generation unit configured to generate a spectral vector distance image; and an oil spill area detection unit configured to derive the range of the oil spill area by combining the spectral angle mapper image and the spectral vector distance image together.

Abstract: The present invention relates to an apparatus and method for detecting an oil spill by using a satellite image, an apparatus for detecting an oil spill by using a satellite image, the apparatus including: a satellite image reception unit configured to receive a satellite image of a predicted oil spill area; a satellite image correction unit configured to correct the satellite image by compensating for the influences of the atmosphere and waves; a spectral angle mapper image generation unit configured to generate a spectral angle mapper image; a spectral vector distance image generation unit configured to generate a spectral vector distance image; and an oil spill area detection unit configured to derive the range of the oil spill area by combining the spectral angle mapper image and the spectral vector distance image together.

Abstract: The present disclosure relates to a communication scheme and system which fuse a 5G communication system for supporting a higher data transfer rate than a 4G system with IoT technology, and a system thereof. The present disclosure may be applied to smart services such as smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety services, etc., based on 5G communication technologies and IoT related technologies.

Abstract: The present disclosure relates to a communication scheme and system which fuse a 5G communication system for supporting a higher data transfer rate than a 4G system with IoT technology, and a system thereof. The present disclosure may be applied to smart services such as smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety services, etc., based on 5G communication technologies and IoT related technologies.

Abstract: A communication method and apparatus for cancelling interference are provided. The communication apparatus includes an active element configured to receive a first signal and a parasitic element configured to receive a second signal. A third signal is generated by cancelling interference in the first signal using the second signal.

Abstract: A communication method and apparatus for cancelling interference are provided. The communication apparatus includes an active element configured to receive a first signal and a parasitic element configured to receive a second signal. A third signal is generated by cancelling interference in the first signal using the second signal.

Abstract: Provided is an access point grouping method to be performed in a high speed mobile environment and a communication system using the access point grouping method. A system capacity may be improved by grouping users having different movement speeds with respect to various channel environments classified based on existence of an LOS channel, and by performing beamforming. Channel information with respect to a user moving at a high speed may not be required, and thus overhead may be reduced.

Abstract: Provided is an access point grouping method to be performed in a high speed mobile environment and a communication system using the access point grouping method. A system capacity may be improved by grouping users having different movement speeds with respect to various channel environments classified based on existence of an LOS channel, and by performing beamforming. Channel information with respect to a user moving at a high speed may not be required, and thus overhead may be reduced.