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1. 发明授权

US10182439B2 Method and apparatus for data-aided iterative channel estimation 有权
公开(公告)号：US10182439B2
公开(公告)日：2019-01-15
申请号：US15131781
申请日：2016-04-18
申请人： Yoo Jin Choi , Dongwoon Bai , Sungsoo Kim , Jungwon Lee
发明人： Yoo Jin Choi , Dongwoon Bai , Sungsoo Kim , Jungwon Lee
IPC分类号： H04W72/04 , H04B1/10 , H04L5/00 , H04L25/02 , H04L27/20 , H04J4/00 , H04L1/18
摘要： An apparatus and a method. The apparatus includes a channel estimation (CE) module, including a first input for receiving pilot resource element (RE) observations, a second input for receiving data RE observations, a third input for receiving log-likelihood ratios (LLRs), and an output; a detector, including a first input connected to the output of the CE module, a second input for receiving data RE observations, and an output connected to the third input of the CE module; and a decoder, including an input connected to the third input of the CE module, and an output.

2. 发明申请

US20170238317A1 METHOD AND APPARATUS FOR DATA-AIDED ITERATIVE CHANNEL ESTIMATION 审中-公开
公开(公告)号：US20170238317A1
公开(公告)日：2017-08-17
申请号：US15131781
申请日：2016-04-18
申请人： Yoo Jin CHOI , Dongwoon Bai , Sungsoo Kim , Jungwon Lee
发明人： Yoo Jin CHOI , Dongwoon Bai , Sungsoo Kim , Jungwon Lee
IPC分类号： H04W72/04 , H04L25/02 , H04L1/18 , H04L27/20 , H04J4/00 , H04L5/00 , H04B1/10
CPC分类号： H04W72/0453 , H04B1/10 , H04B1/123 , H04J4/00 , H04L1/005 , H04L1/1819 , H04L5/005 , H04L5/0073 , H04L25/0204 , H04L25/0228 , H04L25/0256 , H04L25/0328 , H04L25/03286 , H04L25/067 , H04L27/2017
摘要： An apparatus and a method. The apparatus includes a channel estimation (CE) module, including a first input for receiving pilot resource element (RE) observations, a second input for receiving data RE observations, a third input for receiving log-likelihood ratios (LLRs), and an output; a detector, including a first input connected to the output of the CE module, a second input for receiving data RE observations, and an output connected to the third input of the CE module; and a decoder, including an input connected to the third input of the CE module, and an output.

3. 发明授权

US08665986B2 Communication system with modulation classifier and method of operation thereof 有权
标题翻译：具有调制分类器的通信系统及其操作方法
公开(公告)号：US08665986B2
公开(公告)日：2014-03-04
申请号：US13435309
申请日：2012-03-30
申请人： Dongwoon Bai , Jungwon Lee , Sungsoo Kim , Junghyun Bae , Jooyeol Yang , Inyup Kang
发明人： Dongwoon Bai , Jungwon Lee , Sungsoo Kim , Junghyun Bae , Jooyeol Yang , Inyup Kang
IPC分类号： H04B15/00
CPC分类号： H04L27/0012
摘要： A method of operation of a communication system includes: calculating a shift distance of a received signal having a distortion; calculating an approximate likelihood of the received signal matching a transmitted signal from the shift distance; determining a bias factor from the distortion; and selecting a determined modulation maximizing a combination of the approximate likelihood and the bias factor for communicating with a device.
摘要翻译：一种通信系统的操作方法包括：计算具有失真的接收信号的移位距离; 计算所述接收信号与所述移动距离匹配的发送信号的近似似然度; 从失真中确定偏差因子; 以及选择最大化用于与设备通信的近似似然性和偏差因子的组合的确定的调制。

4. 发明申请

US20130058427A1 COMMUNICATION SYSTEM WITH MODULATION CLASSIFIER AND METHOD OF OPERATION THEREOF 有权
标题翻译：具有调制分类器的通信系统及其操作方法
公开(公告)号：US20130058427A1
公开(公告)日：2013-03-07
申请号：US13435309
申请日：2012-03-30
申请人： Dongwoon Bai , Jungwon Lee , Sungsoo Kim , Junghyun Bae , Jooyeol Yang , Inyup Kang
发明人： Dongwoon Bai , Jungwon Lee , Sungsoo Kim , Junghyun Bae , Jooyeol Yang , Inyup Kang
IPC分类号： H04B15/00
CPC分类号： H04L27/0012
摘要： A method of operation of a communication system includes: calculating a shift distance of a received signal having a distortion; calculating an approximate likelihood of the received signal matching a transmitted signal from the shift distance; determining a bias factor from the distortion; and selecting a determined modulation maximizing a combination of the approximate likelihood and the bias factor for communicating with a device.
摘要翻译：一种通信系统的操作方法包括：计算具有失真的接收信号的移位距离; 计算所述接收信号与所述移动距离匹配的发送信号的近似似然度; 从畸变中确定偏差因子; 以及选择最大化用于与设备通信的近似似然性和偏差因子的组合的确定的调制。

5. 发明授权

US08958323B2 Communication system with signal processing mechanism for tone estimation and method of operation thereof 有权
标题翻译：具有用于音调估计的信号处理机构的通信系统及其操作方法
公开(公告)号：US08958323B2
公开(公告)日：2015-02-17
申请号：US13424237
申请日：2012-03-19
申请人： Dongwoon Bai , Heejin Roh , Jungwon Lee
发明人： Dongwoon Bai , Heejin Roh , Jungwon Lee
IPC分类号： H04L27/26
CPC分类号： H04L27/2662
摘要： A method of operation of a communication system includes: converting time-domain data to frequency-domain data based on an N-point transform size; generating K-point data based on the frequency-domain data and the N-point transform size; and determining a tone interference frequency based on the K-point data for elimination of tone interference to improve system performance.
摘要翻译：一种通信系统的操作方法包括：基于N点变换大小将时域数据转换为频域数据; 基于频域数据和N点变换大小生成K点数据; 并且基于用于消除音调干扰的K点数据确定音调干扰频率以提高系统性能。

6. 发明申请

US20120236744A1 COMMUNICATION SYSTEM WITH SIGNAL PROCESSING MECHANISM FOR TONE ESTIMATION AND METHOD OF OPERATION THEREOF 有权
标题翻译：具有用于音调估计的信号处理机制的通信系统及其操作方法
公开(公告)号：US20120236744A1
公开(公告)日：2012-09-20
申请号：US13424237
申请日：2012-03-19
申请人： Dongwoon Bai , Heejin Roh , Jungwon Lee
发明人： Dongwoon Bai , Heejin Roh , Jungwon Lee
IPC分类号： H04L12/24 , H04L12/26
CPC分类号： H04L27/2662
摘要： A method of operation of a communication system includes: converting time-domain data to frequency-domain data based on an N-point transform size; generating K-point data based on the frequency-domain data and the N-point transform size; and determining a tone interference frequency based on the K-point data for elimination of tone interference to improve system performance.
摘要翻译：一种通信系统的操作方法包括：基于N点变换大小将时域数据转换为频域数据; 基于频域数据和N点变换大小生成K点数据; 并且基于用于消除音调干扰的K点数据确定音调干扰频率以提高系统性能。

7. 发明授权

US08248170B2 Stabilized digital quadrature oscillator 有权
标题翻译：稳定数字正交振荡器
公开(公告)号：US08248170B2
公开(公告)日：2012-08-21
申请号：US12952154
申请日：2010-11-22
申请人： Dariush Dabiri , Dongwoon Bai , Nils Graef , Wenwei Pan
发明人： Dariush Dabiri , Dongwoon Bai , Nils Graef , Wenwei Pan
IPC分类号： H03K3/03
CPC分类号： G06F1/022
摘要： A stabilized quadrature oscillator providing consistently high signal quality is disclosed. The stabilized quadrature oscillator includes an iterative quadrature oscillator and a quadrature signal stabilizer. The iterative quadrature oscillator generates an iterative cosine signal and an iterative sine signal using a stabilized cosine signal and a stabilized sine signal from the quadrature signal stabilizer. The quadrature signal stabilizer generates the stabilized cosine signal and the stabilized sine signal based on an energy measure of the iterative cosine signal and the iterative sine signal. Specifically, if the energy measure is less than a low threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a greater magnitude than the iterative sine signal and the iterative cosine signal, respectively. Conversely, if the energy measure is greater than a high threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a lesser magnitude than the iterative sine signal and the iterative cosine signal, respectively.
摘要翻译：公开了一种提供一致的高信号质量的稳定的正交振荡器。稳定的正交振荡器包括迭代正交振荡器和正交信号稳定器。迭代正交振荡器使用稳定余弦信号和来自正交信号稳定器的稳定正弦信号产生迭代余弦信号和迭代正弦信号。正交信号稳定器基于迭代余弦信号和迭代正弦信号的能量测量值产生稳定的余弦信号和稳定的正弦信号。具体地说，如果能量测量小于低阈值，则正交信号稳定器分别产生稳定的正弦信号和稳定的余弦信号，以具有比迭代正弦信号和迭代余弦信号更大的幅度。相反，如果能量测量值大于高阈值，则正交信号稳定器分别产生稳定正弦信号和稳定余弦信号，其幅度分别小于迭代正弦信号和迭代余弦信号。

8. 发明申请

US20120126903A1 Stabilized Digital Quadrature Oscillator 有权
标题翻译：稳定数字正交振荡器
公开(公告)号：US20120126903A1
公开(公告)日：2012-05-24
申请号：US12952154
申请日：2010-11-22
申请人： Dariush Dabiri , Dongwoon Bai , Nils Graef , Wenwei Pan
发明人： Dariush Dabiri , Dongwoon Bai , Nils Graef , Wenwei Pan
IPC分类号： H03B27/00
CPC分类号： G06F1/022
摘要： A stabilized quadrature oscillator providing consistently high signal quality is disclosed. The stabilized quadrature oscillator includes an iterative quadrature oscillator and a quadrature signal stabilizer. The iterative quadrature oscillator generates an iterative cosine signal and an iterative sine signal using a stabilized cosine signal and a stabilized sine signal from the quadrature signal stabilizer. The quadrature signal stabilizer generates the stabilized cosine signal and the stabilized sine signal based on an energy measure of the iterative cosine signal and the iterative sine signal. Specifically, if the energy measure is less than a low threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a greater magnitude than the iterative sine signal and the iterative cosine signal, respectively. Conversely, if the energy measure is greater than a high threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a lesser magnitude than the iterative sine signal and the iterative cosine signal, respectively.
摘要翻译：公开了一种提供一致的高信号质量的稳定的正交振荡器。稳定的正交振荡器包括迭代正交振荡器和正交信号稳定器。迭代正交振荡器使用稳定余弦信号和来自正交信号稳定器的稳定正弦信号产生迭代余弦信号和迭代正弦信号。正交信号稳定器基于迭代余弦信号和迭代正弦信号的能量测量值产生稳定的余弦信号和稳定的正弦信号。具体地说，如果能量测量小于低阈值，则正交信号稳定器分别产生稳定的正弦信号和稳定的余弦信号，以具有比迭代正弦信号和迭代余弦信号更大的幅度。相反，如果能量测量值大于高阈值，则正交信号稳定器分别产生稳定正弦信号和稳定余弦信号，其幅度分别小于迭代正弦信号和迭代余弦信号。

9. 发明授权

US08582633B2 Confirmation of presence of narrowband interference by harmonic analysis 有权
标题翻译：通过谐波分析确认窄带干扰的存在
公开(公告)号：US08582633B2
公开(公告)日：2013-11-12
申请号：US12952172
申请日：2010-11-22
申请人： Dariush Dabiri , Dongwoon Bai
发明人： Dariush Dabiri , Dongwoon Bai
IPC分类号： H04B3/46
CPC分类号： H04B1/1027 , H04B17/26 , H04B17/345
摘要： One or more processing units confirm existence of narrow band interference in a signal by using an estimate f of the frequency, to check for one or more harmonics. In illustrative embodiments, the estimate f is automatically identified as a second harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at either of two frequencies namely (A) frequency f/2 and (B) frequency (M−f)/2 and whichever of these two frequencies is stronger is identified as the fundamental frequency. In several such embodiments, the estimate f is automatically identified as a third harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at any of three frequencies namely (C) frequency f/3 and (D) frequency (M−t)/3 and (E) frequency (M+f)/3. If the predetermined criteria are not met at all five frequencies (A)-(E) then f is identified as the fundamental frequency.
摘要翻译：一个或多个处理单元通过使用频率的估计f来确认信号中的窄带干扰的存在，以检查一个或多个谐波。在说明性实施例中，如果在两个频率（A）频率f / 2和（B）频率（Mf）中的任一个处的信号（在频域中）满足预定标准，则估计f被自动识别为二次谐波。 / 2，这两个频率中的任一个更强，被确定为基频。在几个这样的实施例中，如果在三个频率中的任何一个（即，（C）频率f / 3和（D）频率（Mt））处的信号（在频域中）满足预定标准，则估计f被自动识别为三次谐波）/ 3和（E）频率（M + f）/ 3。如果在所有五个频率（A） - （E）不满足预定标准，则f被识别为基频。

10. 发明申请

US20120128049A1 Confirmation of Presence of Narrowband Interference By Harmonic Analysis 有权
标题翻译：通过谐波分析确认窄带干扰的存在
公开(公告)号：US20120128049A1
公开(公告)日：2012-05-24
申请号：US12952172
申请日：2010-11-22
申请人： Dariush Dabiri , Dongwoon Bai
发明人： Dariush Dabiri , Dongwoon Bai
IPC分类号： H04B17/00 , H04B1/10
CPC分类号： H04B1/1027 , H04B17/26 , H04B17/345
摘要： One or more processing units confirm existence of narrow band interference in a signal by using an estimate f of the frequency, to check for one or more harmonics. In illustrative embodiments, the estimate f is automatically identified as a second harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at either of two frequencies namely (A) frequency f/2 and (B) frequency (M−f)/2 and whichever of these two frequencies is stronger is identified as the fundamental frequency. In several such embodiments, the estimate f is automatically identified as a third harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at any of three frequencies namely (C) frequency f/3 and (D) frequency (M−t)/3 and (E) frequency (M+f)/3. If the predetermined criteria are not met at all five frequencies (A)-(E) then f is identified as the fundamental frequency.
摘要翻译：一个或多个处理单元通过使用频率的估计f来确认信号中的窄带干扰的存在，以检查一个或多个谐波。在说明性实施例中，如果在两个频率（A）频率f / 2和（B）频率（M-1）中的任一个下，信号（在频域中）满足预定标准，则估计f被自动识别为二次谐波。 f）/ 2和这两个频率之中较强者被确定为基频。在几个这样的实施例中，如果在三个频率中的任一个（即，（C）频率f / 3和（D）频率（M））的信号（在频域中）满足预定标准，则估计f被自动识别为三次谐波 -t）/ 3和（E）频率（M + f）/ 3。如果在所有五个频率（A） - （E）不满足预定标准，则f被识别为基频。

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