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1. 发明授权

US08073393B2 Methods and systems for least squares block channel estimation 有权
标题翻译：最小二乘阻塞信道估计的方法和系统
公开(公告)号：US08073393B2
公开(公告)日：2011-12-06
申请号：US12365896
申请日：2009-02-05
申请人： Yuanning Yu , James Y. Hurt , Jong Hyeon Park , Je Woo Kim
发明人： Yuanning Yu , James Y. Hurt , Jong Hyeon Park , Je Woo Kim
IPC分类号： H04B17/00 , H04B7/204
CPC分类号： H04L25/025 , H04L5/0007 , H04L25/0232
摘要： Certain embodiments of the present disclosure provide techniques for channel estimation without resorting to the channel second-order statistics. Methods and systems are proposed for improving the performance of an un-constrained least squares channel interpolator by using available side information of the channel, such as signal-to-noise ratio (SNR), Doppler frequency and/or delay spread.
摘要翻译：本公开的某些实施例提供用于信道估计的技术，而不依赖于信道二阶统计。提出了通过使用信道的可用侧信息（例如信噪比（SNR），多普勒频率和/或延迟扩展）来提高未受约束的最小二乘通道内插器的性能的方法和系统。

2. 发明申请

US20100197254A1 METHODS AND SYSTEMS FOR LEAST SQUARES BLOCK CHANNEL ESTIMATION 有权
标题翻译：用于最小二乘法块通道估计的方法和系统
公开(公告)号：US20100197254A1
公开(公告)日：2010-08-05
申请号：US12365896
申请日：2009-02-05
申请人： Yuanning Yu , James Y. Hurt , Jong Hyeon Park , Je Woo Kim
发明人： Yuanning Yu , James Y. Hurt , Jong Hyeon Park , Je Woo Kim
IPC分类号： H04B1/18
CPC分类号： H04L25/025 , H04L5/0007 , H04L25/0232
摘要： Certain embodiments of the present disclosure provide techniques for channel estimation without resorting to the channel second-order statistics. Methods and systems are proposed for improving the performance of an un-constrained least squares channel interpolator by using available side information of the channel, such as signal-to-noise ratio (SNR), Doppler frequency and/or delay spread.
摘要翻译：本公开的某些实施例提供用于信道估计的技术，而不依赖于信道二阶统计。提出了通过使用信道的可用侧信息（例如信噪比（SNR），多普勒频率和/或延迟扩展）来提高未受约束的最小二乘通道内插器的性能的方法和系统。

3. 发明授权

US08194588B2 Coding block based HARQ combining scheme for OFDMA systems 有权
标题翻译：用于OFDMA系统的基于编码块的HARQ组合方案
公开(公告)号：US08194588B2
公开(公告)日：2012-06-05
申请号：US11955645
申请日：2007-12-13
申请人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , James Y. Hurt
发明人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , James Y. Hurt
IPC分类号： H04W4/00
CPC分类号： H04L1/1845 , H04L1/1812
摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.
摘要翻译：提供了一种用于组合在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中被划分为编码块的重传的混合自动重复请求（HARQ）消息的方法和装置。根据这样的基于编码块的HARQ组合方案，可以将每个编码块的质量与阈值进行比较，以确定是否应为每个编码块保存解码比特或HARQ组合信号以用于后续HARQ迭代。除了减少所需的HARQ缓冲器大小同时保持组合增益之外，与常规HARQ组合技术相比，基于编码块的HARQ组合还可以提供快速解码和降低的功耗。

4. 发明申请

US20090158109A1 SELECTIVE HARQ COMBINING SCHEME FOR OFDM/OFDMA SYSTEMS 有权
标题翻译： OFDM / OFDMA系统的选择性HARQ组合方案
公开(公告)号：US20090158109A1
公开(公告)日：2009-06-18
申请号：US11956168
申请日：2007-12-13
申请人： Jong Hyeon Park , Je Woo Kim , Sameer Nanavati , James Y. Hurt
发明人： Jong Hyeon Park , Je Woo Kim , Sameer Nanavati , James Y. Hurt
IPC分类号： G08C25/02
CPC分类号： H04L1/1845 , H04L1/1812 , H04L5/0007
摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.
摘要翻译：提供了一种用于在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。用于特定信道的HARQ组合器的类型可以取决于包括传输的调制阶数，组合信号所需的位数以及HARQ缓冲器中的余量的选择标准的数量。对于一些实施例，可以将不同类型的HARQ组合器的组合设计成接收机并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。

5. 发明申请

US20090154392A1 CODING BLOCK BASED HARQ COMBINING SCHEME FOR OFDMA SYSTEMS 有权
标题翻译：用于OFDMA系统的基于块的HARQ组合方案
公开(公告)号：US20090154392A1
公开(公告)日：2009-06-18
申请号：US11955645
申请日：2007-12-13
申请人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , James Y. Hurt
发明人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , James Y. Hurt
IPC分类号： H04Q7/00
CPC分类号： H04L1/1845 , H04L1/1812
摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.
摘要翻译：提供了一种用于组合在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中被划分为编码块的重传的混合自动重复请求（HARQ）消息的方法和装置。根据这样的基于编码块的HARQ组合方案，可以将每个编码块的质量与阈值进行比较，以确定是否应为每个编码块保存解码比特或HARQ组合信号以用于后续HARQ迭代。除了减少所需的HARQ缓冲器大小同时保持组合增益之外，与常规HARQ组合技术相比，基于编码块的HARQ组合还可以提供快速解码和降低的功耗。

6. 发明授权

US08132069B2 Selective HARQ combining scheme for OFDM/OFDMA systems 有权
标题翻译： OFDM / OFDMA系统的选择性HARQ组合方案
公开(公告)号：US08132069B2
公开(公告)日：2012-03-06
申请号：US11956168
申请日：2007-12-13
申请人： Jong Hyeon Park , Je Woo Kim , Sameer Nanavati , James Y. Hurt
发明人： Jong Hyeon Park , Je Woo Kim , Sameer Nanavati , James Y. Hurt
IPC分类号： G08C25/02 , G08C25/00
CPC分类号： H04L1/1845 , H04L1/1812 , H04L5/0007
摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.
摘要翻译：提供了一种用于在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。用于特定信道的HARQ组合器的类型可以取决于包括传输的调制阶数，组合信号所需的位数以及HARQ缓冲器中的余量的选择标准的数量。对于一些实施例，可以将不同类型的HARQ组合器的组合设计成接收机并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。

7. 发明申请

US20090316840A1 METHODS AND SYSTEMS FOR STC SIGNAL DECODING USING MIMO DECODER 审中-公开
标题翻译：使用MIMO解码器的STC信号解码的方法和系统
公开(公告)号：US20090316840A1
公开(公告)日：2009-12-24
申请号：US12211935
申请日：2008-09-17
申请人： Jong Hyeon Park , Brian Clark Banister , Inyup Kang , Je Woo Kim , James Y. Hurt , Matthias Brehler
发明人： Jong Hyeon Park , Brian Clark Banister , Inyup Kang , Je Woo Kim , James Y. Hurt , Matthias Brehler
IPC分类号： H04L27/06
CPC分类号： H04L1/0631 , H04L1/0662
摘要： Space time coding (STC) may be applied at the transmitter adding redundant information in both space and time dimensions. At the receiver, the received STC signal may be decoded using a spatial multiplexing MIMO decoding, for example, based on either Minimum Mean Square Error (MMSE) or maximum-likelihood (ML) algorithms. A selective STC decoder may incorporate both the conventional maximum ratio combining (MRC) decoding scheme and a MIMO decoding scheme. One of the STC decoding schemes may be selected, for example, based on estimated channel conditions in order to achieve a trade-off between error rate performance and computational complexity. Components used for a non-selected scheme may be powered down.
摘要翻译：空间时间编码（STC）可以在发射机上应用于空间和时间维度上的冗余信息。在接收机处，可以使用例如基于最小均方误差（MMSE）或最大似然（ML）算法的空间复用MIMO解码来解码所接收的STC信号。选择性STC解码器可以并入传统的最大比组合（MRC）解码方案和MIMO解码方案。可以例如基于估计的信道条件来选择STC解码方案之一，以便实现错误率性能和计算复杂度之间的权衡。用于未选择方案的组件可能会关闭电源。

8. 发明授权

US08264946B2 Methods and systems for PAPR reduction in SC-FDMA systems 有权
标题翻译： SC-FDMA系统减少PAPR的方法和系统
公开(公告)号：US08264946B2
公开(公告)日：2012-09-11
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： H04J11/00
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。

9. 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。

10. 发明授权

US08731109B2 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和系统
公开(公告)号：US08731109B2
公开(公告)日：2014-05-20
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： H04L25/02
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。

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