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公开(公告)号：KR1020040023863A
公开(公告)日：2004-03-20
申请号：KR1020020055302
申请日：2002-09-12
Applicant: 한국전자통신연구원
IPC: H03K9/02
CPC classification number: H04L25/067 , H04L27/38
Abstract: PURPOSE: A soft decision decoder, and a log-likelihood ratio calculation apparatus during soft decision decoding and its method are provided to improve decoding performance of a received signal by performing an optimum signal decoding. CONSTITUTION: A plurality of log-likelihood ratio calculation apparatus(100) uses a received signal(y) containing noise inputted from a receiver to perform a soft decision decoding as to an orthogonal amplitude modulated signal, and calculate a log-likelihood ratio of a positive(+) signal and a negative(-) signal. A subtract(112) determines a difference of log-likelihood ratio of the positive signal and the negative signal being output from the plurality of log-likelihood ratio calculation apparatus. And a comparator(114) receives the calculation result of the log-likelihood ratio difference of the subtract and then determines the orthogonal amplitude modulated signal as positive(+) or negative(-) according as the calculation result is positive or negative number.
Abstract translation: 目的：提供软判决解码器中的软判决解码器和对数似然比计算装置及其方法，以通过执行最佳信号解码来改善接收信号的解码性能。 构成：多个对数似然比计算装置（100）使用包含从接收机输入的噪声的接收信号（y）对正交幅度调制信号进行软判决解码，并计算对数似然比 正（+）信号和负（ - ）信号。 减法（112）确定从多个对数似然比计算装置输出的正信号和负信号的对数似然比之差。 并且比较器（114）接收减法的对数似然比差的计算结果，然后根据计算结果为正数或负数，将正交振幅调制信号确定为正（+）或负（ - ）。
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公开(公告)号：KR1020020054195A
公开(公告)日：2002-07-06
申请号：KR1020000083017
申请日：2000-12-27
Applicant: 한국전자통신연구원
IPC: H03M13/41
CPC classification number: H03M13/6362 , H03M13/395 , H03M13/3961 , H03M13/41 , H03M13/4107
Abstract: PURPOSE: A depuncture structure for radix-4 branch metric operation in high-rate viterbi decoder and a method of the same are provided to enable a depuncture for a radix-4 branch metric operation of all punctured codes simply by using a clock a rate of which is equal to a clock rate of an inputted I, Q bit stream. CONSTITUTION: A first and a second FIFO(First In First Out)(110) store an I-signal sequentially. A third and a fourth FIFO(110) store a Q-signal sequentially. A first and a second multiplexor(120) multiplex a signal inputted from the first and the third FIFO(110). A third and a fourth multiplexor(120) multiplex a signal inputted from the second and the fourth FIFO(110). A first radix-2 branch metric calculator(130) performs a depuncture function about a signal inputted from the first and the second multiplexor(120). A second radix-2 branch metric calculator(130) performs a depuncture function about a signal inputted from the third and the fourth multiplexor(120).
Abstract translation: 目的：提供一种用于高速率维特比解码器中的基数4分支度量操作的解穿孔结构及其方法，以便能够简单地通过使用时钟的速率来实现针对所有穿孔码的基4分支度量操作 其等于输入的I，Q比特流的时钟速率。 构成：第一和第二FIFO（先进先出）（110）依次存储I信号。 第三和第四FIFO（110）依次存储Q信号。 第一和第二多路复用器（120）对从第一和第三FIFO（110）输入的信号进行复用。 第三和第四多路复用器（120）对从第二和第四FIFO（110）输入的信号进行复用。 第一基数-2分支度量计算器（130）执行关于从第一和第二多路复用器（120）输入的信号的解穿孔功能。 第二基数-2分支度量计算器（130）执行关于从第三和第四多路复用器（120）输入的信号的去穿刺功能。
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Patent Agency Ranking
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公开(公告)号：KR101908063B1
公开(公告)日：2018-10-15
申请号：KR1020120068158
申请日：2012-06-25
Applicant: 한국전자통신연구원
IPC: H01Q3/01
CPC classification number: H01Q9/0442 , H01Q3/247
Abstract: 방향제어안테나는접지체와방사체사이에복수의임피던스소자가연결되어있고, 각임피던스소자와접지체사이에연결되어있는복수의스위치가연결되어있으며, 외부로부터의제어명령에따라서복수의스위치의온오프를제어한다. 이때턴온되는스위치에의해서접지체와단락되는방사체의단락위치및 단락위치의수에따라서방사방향및 방사형태가결정된다.
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公开(公告)号：KR101878493B1
公开(公告)日：2018-07-13
申请号：KR1020110045216
申请日：2011-05-13
Abstract: 자기센서와진동센서를사용하여센서노드의방위각과기울기를계산하고, 센서노드에접근하는타겟을탐지하는센서노드제어장치및 방법이개시된다. 센서노드제어장치는자기센서가측정한자기값과진동센서가측정한진동값을기초로센서노드의방위각과기울기를계산하는계산부; 방위각과기울기가계산되면, 상기자기값과진동값을필터링하고증폭하는센서제어부; 및필터링하고증폭된자기값과진동값을기초로타겟을탐지하는탐지부를포함할수 있다.
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公开(公告)号：KR1020170014859A
公开(公告)日：2017-02-08
申请号：KR1020150108833
申请日：2015-07-31
Applicant: 한국전자통신연구원
IPC: H04L12/24
Abstract: 저전력양방향통신장치및 방법이개시된다. 본발명의일실시예에따른저전력양방향통신장치는데이터수집장치와통신을수행하여센서가수집한주위환경에대한데이터를전송하는통신부; 상기데이터수집장치에서상기통신부로전송하고자하는데이터가존재하는경우송신하는 ACK 신호를특정기간동안수신하는 ACK 신호수신부; 및상기 ACK 신호가수신된경우, 상기통신부의상태를대기상태로변환하고, 상기데이터수집장치에서상기통신부로전송하는데이터의수신을완료한이후, 상기통신부의상태를수면상태로변환하는제어부를포함한다.
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