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公开(公告)号：US11796669B2
公开(公告)日：2023-10-24
申请号：US17594600
申请日：2020-04-24
发明人： Jungah Lee
IPC分类号： G01S13/87 , G01S7/02 , G01S13/32 , H04B7/0413 , H04B7/06 , G01S13/42 , G01S13/931
CPC分类号： G01S13/878 , G01S7/0234 , G01S13/325 , G01S13/426 , G01S13/931 , H04B7/0413 , H04B7/0617 , H04B7/0682 , H04B7/0695 , G01S7/023
摘要： An advanced system and method is provided. The advanced system and method comprises: a set of antennas including a set of transmit antennas and a set of receive antennas; a digital beamformer; and a processor operably connected to the set of antennas and the digital beamformer, the processor configured to; identify a set of orthogonal multiple-input-multiple-output (MIMO) signals, generate a first set of beams via the digital beamformer, and map the set of orthogonal MIMO signals into each of the generated set of beams. The advanced system and method further comprises a transceiver operably connected to the processor, the transceiver configured to: transmit, to a target scene via the set of transmit antenna of the set of antennas, a first signal based on the first set of beams; and receive, via the set of receive antennas of the set of antennas, a second signal based on a second set of beams that is reflected or backscattered from the target scene.
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公开(公告)号：US11252396B2
公开(公告)日：2022-02-15
申请号：US16786851
申请日：2020-02-10
发明人： Jungah Lee
IPC分类号： H04N13/254 , H04N13/275 , G01S13/89 , G01S13/42
摘要： An advanced communication system is provided. The advanced communication system comprises generating a first signal with a polyphase coding based on a DFT spread OFDM with at least one CAZAC sequence in accordance with a configuration condition, applying a digital transmit beamforming to the generated first signal, converting the first signal to analog from digital, modulating the converted first signal with an energy source, emitting, using at least one energy emit element, the modulated first signal, detecting a second signal comprising at least a portion of the emitted first signal that is reflected from at least one object in a scene in a field-of-view, demodulating the detected second signal, converting the second signal to digital from analog, converting the converted second signal to a computational image, and generating a 3D image by applying coherent detection to the computational image. The first signal comprises a polyphase sequence.
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公开(公告)号：US10560685B2
公开(公告)日：2020-02-11
申请号：US16438140
申请日：2019-06-11
发明人： Jungah Lee
IPC分类号： H04N13/254 , H04N13/275 , G01S13/89 , G01S13/42
摘要： An advanced communication system is provided. The advanced communication system comprises generating a first signal with a polyphase coding based on a DFT spread OFDM with at least one CAZAC sequence in accordance with a configuration condition, applying a digital transmit beamforming to the generated first signal, converting the first signal to analog from digital, modulating the converted first signal with an energy source, emitting, using at least one energy emit element, the modulated first signal, detecting a second signal comprising at least a portion of the emitted first signal that is reflected from at least one object in a scene in a field-of-view, demodulating the detected second signal, converting the second signal to digital from analog, converting the converted second signal to a computational image, and generating a 3D image by applying coherent detection to the computational image. The first signal comprises a polyphase sequence.
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4.发明公开公开(公告)号：US20240072947A1
公开(公告)日：2024-02-29
申请号：US18261092
申请日：2022-01-11
发明人： Inseop Lee , Jungah Lee
CPC分类号： H04L5/0007 , H04L5/0023 , H04L7/0033
摘要： The apparatus includes: a processor, a receiver, and at least one transmitter operably connected to the processor and the receiver. The at least one transmitter configured to generate multi-band channel signals that are sequentially generated in a time domain, modulate a set of carrier frequencies based on the multi-band channel signals, and sequentially transmit a sub-channel coded orthogonal frequency division multiplexing (OFDM) signal in the time domain.
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公开(公告)号：US20200252599A1
公开(公告)日：2020-08-06
申请号：US16786851
申请日：2020-02-10
发明人： Jungah Lee
IPC分类号： H04N13/254 , H04N13/275
摘要： An advanced communication system is provided. The advanced communication system comprises generating a first signal with a polyphase coding based on a DFT spread OFDM with at least one CAZAC sequence in accordance with a configuration condition, applying a digital transmit beamforming to the generated first signal, converting the first signal to analog from digital, modulating the converted first signal with an energy source, emitting, using at least one energy emit element, the modulated first signal, detecting a second signal comprising at least a portion of the emitted first signal that is reflected from at least one object in a scene in a field-of-view, demodulating the detected second signal, converting the second signal to digital from analog, converting the converted second signal to a computational image, and generating a 3D image by applying coherent detection to the computational image. The first signal comprises a polyphase sequence.
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公开(公告)号：US11936477B2
公开(公告)日：2024-03-19
申请号：US17310066
申请日：2020-01-14
发明人： Jungah Lee
CPC分类号： H04L1/007 , G01S13/42 , G01S15/8909 , H04L5/0007
摘要： An advanced radio apparatus includes a set of antennas; analog circuit; digital circuit; medium access control (MAC) controller; and processor operably connected to the set of antennas, the analog circuit, the digital circuit, and the MAC controller. The processor is configured to decompose wideband waveform signals into a time-frequency waveform based on a sequence of sub-band signals; generate a time-frequency radar waveform based on the decomposed wideband waveform signals; map, based on the time-frequency radar waveform, a constant amplitude zero auto-correlation (CAZAC) sequence into orthogonal frequency division multiplexing (OFDM) sub-carriers to generate a first radar signal. A transceiver is connected to the processor and configured to transmit, to a target object via a transmit antenna of the set of antennas, the first radar signal and receive, via a receive antenna of the set of antennas, a second signal that is reflected or backscattered from the target object.
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公开(公告)号：US20230033995A1
公开(公告)日：2023-02-02
申请号：US17758879
申请日：2021-01-14
发明人： Jungah Lee , David C. Munson, JR.
摘要： The apparatus includes: a radar circuit including a set of antennas for transmission and reception, a transmitter, a receiver, and a medium access control (MAC) controller. The apparatus further includes a controller operably connected to the radar circuit, the controller configured to identify a discrete Fourier transform (DFT) of a long constant amplitude zero autocorrelation (CAZAC) sequence including multiple segments, identify, via the MAC controller, time-frequency resources for the multiple segments, identify a set of time-frequency sub-channels in the time-frequency resources, and sequentially map each of the multiple segments to each of the set of time-frequency sub-channels. The radar circuit is configured to transmit, via the transmitter, a first signal based on the set of time-frequency sub-channels.
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公开(公告)号：US20190379882A1
公开(公告)日：2019-12-12
申请号：US16438140
申请日：2019-06-11
发明人： Jungah Lee
IPC分类号： H04N13/254 , H04N13/275
摘要： An advanced communication system is provided. The advanced communication system comprises generating a first signal with a polyphase coding based on a DFT spread OFDM with at least one CAZAC sequence in accordance with a configuration condition, applying a digital transmit beamforming to the generated first signal, converting the first signal to analog from digital, modulating the converted first signal with an energy source, emitting, using at least one energy emit element, the modulated first signal, detecting a second signal comprising at least a portion of the emitted first signal that is reflected from at least one object in a scene in a field-of-view, demodulating the detected second signal, converting the second signal to digital from analog, converting the converted second signal to a computational image, and generating a 3D image by applying coherent detection to the computational image. The first signal comprises a polyphase sequence.
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