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    METHOD AND APPARATUS FOR STATE FEEDBACK DECODER BASED CHANNEL ESTIMATION
    55.
    发明申请
    METHOD AND APPARATUS FOR STATE FEEDBACK DECODER BASED CHANNEL ESTIMATION 审中-公开

    公开(公告)号：US20190215194A1

    公开(公告)日：2019-07-11

    申请号：US16243681

    申请日：2019-01-09

    Applicant: KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY-ACADEMIC COOPERATION FOUNDATION

    Inventor： CHANGICK SONG ,  SEUNGHWAN BAEK

    IPC: H04L25/02 ,  H04L27/26 ,  H04L5/00

    Abstract: The present disclosure relates to a state feedback decoder based channel estimating method including: calculating a first output bit when an input bit is 0 and a second output bit when an input bit is 1 using convolution encoder state information received from a determining unit; configuring a first virtual pilot and a second virtual pilot through modulation by receiving the first output bit and the second output bit; deinterleaving an i-th (here, i refers to a natural number corresponding to the number of OFDM symbols from 1) OFDM symbol; estimating a first channel and a second channel based on the first virtual pilot and the second virtual pilot using an output value in accordance with the deinterleaving result and calculating a first mean square error (MSE) and a second MSE; and comparing the calculated first MSE and second MSE to determine an input bit having a lower MSE as a reception bit by the determining unit and updating and feedbacking the convolution encoder state information using the determined reception bit.

    OPTICAL WAVE GUIDE HAVING MULTIPLE INDEPENDENT OPTICAL PATH AND OPTICAL GAS SENSOR USING THAT
    58.
    发明申请
    OPTICAL WAVE GUIDE HAVING MULTIPLE INDEPENDENT OPTICAL PATH AND OPTICAL GAS SENSOR USING THAT 审中-公开
    具有多个独立光学路径和光学气体传感器的光波导使用该方法

    公开(公告)号：US20150219491A1

    公开(公告)日：2015-08-06

    申请号：US14264575

    申请日：2014-04-29

    Applicant: Korea National University of Transportation Industry-Academic Cooperation Foundation

    Inventor： Seung Hwan LEE ,  Sung Ho JANG ,  Sang Ho JUNG

    IPC: G01J1/42 ,  G02B6/43 ,  G02B27/10 ,  G02B6/10 ,  G01J1/04

    CPC classification number: G01J1/4228 ,  G01J1/0422 ,  G01J3/021 ,  G01J3/0216 ,  G01J3/42 ,  G01N21/031 ,  G01N21/05 ,  G01N21/3504 ,  G01N2201/08 ,  G02B6/10 ,  G02B19/0023 ,  G02B19/0085 ,  G02B19/009 ,  G02B27/106 ,  G02B2207/117

    Abstract: The present invention relates to optical wave guide having multiple independent optical path and optical gas sensor using that, having an effect of improving optical efficiency by elongating optical path and condensing incident light without a separate artificial structure, by using first focus points of multiple 3 dimensional elliptical mirrors as a common focus point and equipping a light source at a first focus point and optical sensor parts at each second focus points in an optical structure using multiple 3 dimensional elliptical mirrors, and by placing so that virtual lines of first elliptical mirror and second elliptical mirror form a constant angle for improving optical efficiency in a structure equipping a light source at a second focus point of any one of elliptical mirror of multiple 3 dimensional elliptical mirrors and optical sensor parts at each second focus points of another 3 dimensional elliptical mirror.

    Abstract translation: 本发明涉及具有多个独立光路和光学气体传感器的光波导，其具有通过使用多个3维的第一聚焦点具有通过延长光路并且使具有单独的人造结构的入射光聚光来提高光学效率的效果 椭圆镜作为共同的焦点并且在第一焦点处装备光源和在每个第二焦点处的光学传感器部分使用多个三维椭圆镜的光学结构，并且通过放置使得第一椭圆镜和第二椭圆镜的虚线 椭圆镜形成恒定角度，用于提高在另一个三维椭圆镜的每个第二焦点处的多个三维椭圆镜的椭圆镜和光学传感器部分中的任何一个的第二焦点处装备光源的结构的光学效率。

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