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31. 发明申请

US20100165829A1 METHODS AND SYSTEMS FOR PAPR REDUCTION IN SC-FDMA SYSTEMS 有权
标题翻译：在SC-FDMA系统中减少PAPR的方法和系统
公开(公告)号：US20100165829A1
公开(公告)日：2010-07-01
申请号：US12425486
申请日：2009-04-17
申请人： Madihally J. Narasimha , Je Woo Kim , Yuanning Yu , Jong Hyeon Park
发明人： Madihally J. Narasimha , Je Woo Kim , Yuanning Yu , Jong Hyeon Park
IPC分类号： H04B7/208 , G06F17/14 , G06F5/01
CPC分类号： H04L27/2614
摘要： Certain embodiments of the present disclosure relate to methods for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The proposed methods and systems are based on manipulations of an SC-FDMA transmission signal in a time- and/or a frequency-domain.
摘要翻译：本公开的某些实施例涉及在单载波频分多址（SC-FDMA）系统中传输信号的峰均功率比（PAPR）降低的方法。所提出的方法和系统基于在时域和/或频域中对SC-FDMA传输信号的操纵。

32. 发明申请

US20100158079A1 ID-CELL INDEX SEARCH ALGORITHM AND CARRIER FREQUENCY OFFSET ESTIMATION 失效
标题翻译： ID-CELL索引搜索算法和载波频率偏移估计
公开(公告)号：US20100158079A1
公开(公告)日：2010-06-24
申请号：US12337641
申请日：2008-12-18
申请人： Junqiang Li , Je Woo Kim , Jong Hyeon Park , Matthias Brehler
发明人： Junqiang Li , Je Woo Kim , Jong Hyeon Park , Matthias Brehler
IPC分类号： H04B1/707
CPC分类号： H04L27/2659 , H04J11/0073 , H04L27/2675 , H04L27/2684
摘要： Techniques for initial wireless network synchronization by a mobile station are provided. For certain embodiments, the techniques may involve a joint search for the cell identification (ID-cell index) and the coarse carrier frequency offset (CFO) estimation. For certain embodiments, the techniques may be based on hard correlation and binary differential despreading that substantially simplifies computational complexity compare to known techniques that independently search for the ID-cell index and perform CFO estimation.
摘要翻译：提供了由移动台进行初始无线网络同步的技术。对于某些实施例，这些技术可以涉及对小区标识（ID-小区索引）和粗略载波频率偏移（CFO）估计的联合搜索。对于某些实施例，该技术可以基于硬相关和二进制差分解扩，其与独立地搜索ID小区索引并执行CFO估计的已知技术相比基本上简化了计算复杂度。

33. 发明申请

US20100095189A1 METHODS AND SYSTEMS FOR MODIFIED MAXIMUM-LIKELIHOOD BASED TBCC DECODING 有权
标题翻译：基于最大似然的TBCC解码的方法和系统
公开(公告)号：US20100095189A1
公开(公告)日：2010-04-15
申请号：US12250169
申请日：2008-10-13
申请人： Ju Won Park , Brian Banister , Je Woo Kim , Jong Hyeon Park , Matthias Brehler , Remi Gurski , Tae Chang
发明人： Ju Won Park , Brian Banister , Je Woo Kim , Jong Hyeon Park , Matthias Brehler , Remi Gurski , Tae Chang
IPC分类号： H03M13/23 , G06F11/10
CPC分类号： H03M13/413 , H03M13/3723 , H03M13/3955 , H03M13/3972 , H03M13/6544
摘要： A method and apparatus for decoding of tailbiting convolutional codes (TBCC) are disclosed. The proposed modified maximum-likelihood TBCC decoding technique preserves error correction performance of optimal maximum-likelihood based TBCC decoding, while the computational complexity is substantially decreased since a reduced number of decoding states has been evaluated. Compare to other sub-optimal TBCC decoding algorithms, modified maximum-likelihood TBCC decoding achieves improved packet error rate performance with similar computational complexity.
摘要翻译：公开了一种用于解码尾部卷积码（TBCC）的方法和装置。所提出的修改的最大似然TBCC解码技术保留了最佳最大似然度TBCC解码的纠错性能，同时由于已经减少了解码状态数量，所以计算复杂度显着降低。与其他次优TBCC解码算法相比，修改的最大似然TBCC解码实现了具有类似计算复杂度的改进的分组错误率性能。

34. 发明申请

US20090285317A1 METHODS AND SYSTEMS FOR EFFECTIVE CHANNEL ESTIMATION IN OFDM SYSTEMS 有权
标题翻译： OFDM系统中有效信道估计的方法与系统
公开(公告)号：US20090285317A1
公开(公告)日：2009-11-19
申请号：US12123408
申请日：2008-05-19
申请人： Je Woo Kim , Bok Tae Sim , Ju Won Park , Tae Ryun Chang , Jong Hyeon Park
发明人： Je Woo Kim , Bok Tae Sim , Ju Won Park , Tae Ryun Chang , Jong Hyeon Park
IPC分类号： H04L27/28
CPC分类号： H04L25/0216 , H04L25/022 , H04L27/2647
摘要： A method and apparatus for channel estimation in wireless communications are provided. After an initial channel estimation and an estimation of the effective channel length (ECL) are performed, a weighting based on the ECL may be applied in an effort to remove noise from the initial channel estimate and provide an estimated channel with increased accuracy. Different weightings may apply for different channel lengths. A threshold may be used during the ECL estimation, and the threshold may be predetermined or calculated in an effort to adapt to different channel environments.
摘要翻译：提供了一种用于无线通信中信道估计的方法和装置。在执行初始信道估计和有效信道长度（ECL）的估计之后，可以应用基于ECL的加权来努力去除初始信道估计中的噪声，并提供具有增加的精度的估计信道。不同的加权可能适用于不同的通道长度。在ECL估计期间可以使用阈值，并且可以预先确定或计算阈值以努力适应不同的信道环境。

35. 发明申请

US20090213971A1 COHERENT SINGLE ANTENNA INTERFERENCE CANCELLATION FOR GSM/GPRS/EDGE 有权
标题翻译： GSM / GPRS / EDGE的相干单天线干扰消除
公开(公告)号：US20090213971A1
公开(公告)日：2009-08-27
申请号：US12038724
申请日：2008-02-27
申请人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim
发明人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim
IPC分类号： H04L7/00
CPC分类号： H04L7/042 , H04L7/048 , H04L25/0228
摘要： A method for midamble estimation comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols that comprises a first midamble symbol, calculating, for each symbol in the subset, a corresponding midamble estimation error, and determining the lowest calculated midamble estimation error to locate the first midamble symbol. A receiver comprises an antenna configured to receive a burst of symbols, a timing estimator configured to select a subset of the burst of symbols that comprises a first midamble symbol, a midamble estimator configured to calculate, for each symbol in the subset, a corresponding midamble estimation error, and a processor configured to select the symbol in the subset corresponding to a lowest calculated midamble estimation error as the first midamble symbol.
摘要翻译：一种用于中间码估计的方法包括以下步骤：接收符号脉冲串，选择包括第一中间码符号的符号突发的子集，为该子集中的每个符号计算相应的中间码估计误差，以及确定最低计算中间码估计误差来定位第一个midamble符号。接收机包括被配置为接收符号突发的天线，定时估计器，被配置为选择包括第一中间码符号的符号突发的子集，中间码估计器，被配置为针对子集中的每个符号计算相应的中间码估计误差，以及被配置为选择对应于最低计算的中间码估计误差的子集中的符号作为第一中间码符号的处理器。

36. 发明申请

US20090175394A1 METHODS AND APPARATUS FOR SYNCHRONIZATION AND DETECTION IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中同步和检测的方法与装置
公开(公告)号：US20090175394A1
公开(公告)日：2009-07-09
申请号：US11969330
申请日：2008-01-04
申请人： Jong Hyeon Park , Bok Tae Sim , Tae Ryun Chang , Je Woo Kim , Ju Won Park , Chae Kwan Lee , Sameer Nanavati
发明人： Jong Hyeon Park , Bok Tae Sim , Tae Ryun Chang , Je Woo Kim , Ju Won Park , Chae Kwan Lee , Sameer Nanavati
IPC分类号： H04L7/04
CPC分类号： H04L27/2665 , H04L5/0048 , H04L27/2613 , H04L27/2659 , H04L27/266 , H04L27/2663 , H04L27/2675
摘要： A synchronization and detection method in a wireless device may include performing coarse detection and synchronization with respect to a received signal. The synchronization and detection method may also include performing fine detection and synchronization for acquisition of the received signal. Results of the coarse detection and synchronization may be used for the fine detection and synchronization. The synchronization and detection method may also include performing tracking mode processing when the acquisition of the received signal has been achieved.
摘要翻译：无线设备中的同步和检测方法可以包括对接收到的信号执行粗略检测和同步。同步和检测方法还可以包括执行精细检测和同步以获取接收到的信号。粗检测和同步的结果可以用于精细检测和同步。同步和检测方法还可以包括当已经获得接收信号的获取时执行跟踪模式处理。

37. 发明申请

US20080107220A1 METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中信号和时序检测的方法与装置
公开(公告)号：US20080107220A1
公开(公告)日：2008-05-08
申请号：US11925719
申请日：2007-10-26
申请人： Ju Won Park , Jong Hyeon Park , Je Woo Kim
发明人： Ju Won Park , Jong Hyeon Park , Je Woo Kim
IPC分类号： H04L7/02
CPC分类号： H04L27/2662 , H04L27/2613 , H04L27/2676
摘要： In accordance with a detection method in a wireless communication system, an initial hypothesis for a starting position of a desired signal within a received wireless communication signal may be determined. The desired signal may have a conjugate symmetric property. At least one correlation value may be determined based on the initial hypothesis. The at least one correlation value may indicate the extent to which at least one sample sequence selected from the received signal has the conjugate symmetric property.
摘要翻译：根据无线通信系统中的检测方法，可以确定在所接收的无线通信信号内的期望信号的起始位置的初始假设。期望的信号可以具有共轭对称性质。可以基于初始假设来确定至少一个相关值。所述至少一个相关值可指示从接收信号中选择的至少一个采样序列具有共轭对称性质的程度。

38. 发明授权

US08666004B2 Methods and systems for hybrid MIMO schemes in OFDM/A systems 失效
标题翻译： OFDM / A系统中混合MIMO方案的方法和系统
公开(公告)号：US08666004B2
公开(公告)日：2014-03-04
申请号：US12124955
申请日：2008-05-21
申请人： Je Woo Kim , Jong Hyeon Park , Tae Ryun Chang , Ju Won Park
发明人： Je Woo Kim , Jong Hyeon Park , Tae Ryun Chang , Ju Won Park
IPC分类号： H04L1/02
CPC分类号： H04B7/0871 , H04B7/0617 , H04B7/0619 , H04B7/0669 , H04B7/0689 , H04B7/0857
摘要： Certain embodiments of the present disclosure provide a hybrid receiver diversity scheme that involves combining received signals in accordance with a combination of multiple receive diversity schemes. Certain embodiments of the present disclosure provide a hybrid transmit diversity scheme that involves transmitting diversity signals to a receiver according to a transmit diversity scheme selected based on signal quality measurements received from the receiver.
摘要翻译：本公开的某些实施例提供了一种混合接收机分集方案，其涉及根据多个接收分集方案的组合来组合接收到的信号。本公开的某些实施例提供了一种混合发射分集方案，其涉及根据从接收机接收的信号质量测量选择的发射分集方案向接收机发送分集信号。

39. 发明授权

US08509324B2 Methods and systems for reducing PAPR of an OFDM signal 失效
标题翻译：减少OFDM信号PAPR的方法和系统
公开(公告)号：US08509324B2
公开(公告)日：2013-08-13
申请号：US12169625
申请日：2008-07-08
申请人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
发明人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
IPC分类号： H04K1/10
CPC分类号： H04L5/0007 , H04L27/2602 , H04L27/2614
摘要： Certain embodiments of the present disclosure provide a method and an apparatus for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The method may utilize a permutation of a time domain signal, and/or a permutation of a frequency domain signal or a permutation of a signal transformed by a unitary matrix. The apparatus may include an M-point DFT or some other M×M unitary matrix, N-point IDFT, interpolation and frequency conversion units, and a pair of possibly different permutation matrices of size M×M, where M can be less or equal than N.
摘要翻译：本公开的某些实施例提供了在单载波频分多址（SC-FDMA）系统中发送信号的峰均功率比（PAPR）降低的方法和装置。该方法可以利用时域信号的置换和/或频域信号的置换或由酉矩阵变换的信号的置换。该装置可以包括M点DFT或一些其他M×M酉矩阵，N点IDFT，内插和频率转换单元，以及大小为M×M的一对可能不同的置换矩阵，其中M可以小于或等于比N.

40. 发明授权

US08428197B2 Enhanced channel estimation for communication system receiver 失效
标题翻译：通信系统接收机的增强信道估计
公开(公告)号：US08428197B2
公开(公告)日：2013-04-23
申请号：US11445735
申请日：2006-06-01
申请人： Se Bin Im , Jong Hyeon Park , Je Woo Kim , Hyung Jin Choi
发明人： Se Bin Im , Jong Hyeon Park , Je Woo Kim , Hyung Jin Choi
IPC分类号： H04L27/06
CPC分类号： H04L25/0212 , H04L5/0023 , H04L25/022 , H04L25/0228 , H04L25/0232 , H04L27/2647
摘要： An embodiment of the present invention is a technique to process signals in a communication system. A channel impulse response (CIR) generator generates a time-domain windowed CIR from a received signal using a window function. A thresholder thresholds the time-domain windowed CIR. A compensator compensates window effect for the thresholded time-domain windowed CIR to provide an enhanced channel estimate in frequency domain.
摘要翻译：本发明的实施例是一种在通信系统中处理信号的技术。信道脉冲响应（CIR）发生器使用窗口函数从接收到的信号生成时域窗口CIR。阈值阈值限制了时域窗口的CIR。补偿器补偿阈值时域窗口CIR的窗口效应，以在频域中提供增强的信道估计。

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