Differential transimpedance amplifier

    公开(公告)号:US10396734B1

    公开(公告)日:2019-08-27

    申请号:US16425274

    申请日:2019-05-29

    Inventor: Sung Min Park

    Abstract: Disclosed is a differential transimpedance amplifier. The differential transimpedance amplifier includes a common gate amplifier configured to receive an electrical signal from an input node, and a common source amplifier configured to have a feedback resistor and receive the electrical signal form the input node. An output signal of the common gate amplifier and an output signal of the common source amplifier form a differential signal pair. The common gate amplifier and the common source amplifier each includes a load having a transformer which removes an effect of parasitic capacitance.

    METHOD AND APPARATUS FOR NETWORK ENCODING BASED ON LOW-COMPLEXITY ALGORITHMS FOR NETWORK CODING USING MATRIX DECOMPOSITION

    公开(公告)号:US20180332147A1

    公开(公告)日:2018-11-15

    申请号:US15957689

    申请日:2018-04-19

    CPC classification number: H04L69/324

    Abstract: Provided are a network encoding method and apparatus, and a network decoding method and apparatus that performs network encoding and decoding through a transposed matrix of a unitary matrix decomposed from an encoding coefficient matrix by an eigen-decomposition. The network encoding method may include generating a random symmetric matrix indicating a binary square matrix, extracting an encoding coefficient matrix by decomposing the generated random symmetric matrix, generating encoding data by encoding source data using the extracted encoding coefficient matrix, forming a data packet including the generated encoding data and the encoding coefficient matrix, and converting the formed data packet from a real number field to a Galois field.

    Location determination method and location determination system for sensor apparatus placements in building

    公开(公告)号:US10091674B2

    公开(公告)日:2018-10-02

    申请号:US14655369

    申请日:2014-12-15

    Inventor: Jeong-Ho Kim

    Abstract: A location determining method 200 for sensor apparatus placements in building includes: a step in which a first measuring device transmits a digitally modulated first test packet through a specific channel at a first location in a building (210); a step in which a second measuring device receives the first test packet and transmits a first echo back signal through the specific channel at a second location in the building (220); a step in which the first measuring device receives the first echo back signal transmitted from the second measuring device and measures a first channel quality of the specific channel based on the first echo back signal (230); a step in which the first measuring device transmits a digitally modulated second test packet through the specific channel (240); a step in which the second measuring device receives the second test packet and transmits a second echo back signal through the specific channel (250); and a step in which the first measuring device receives the second echo back signal transmitted from the second measuring device and measures a second channel quality of the specific channel based on the second echo back signal (260).

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