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1. 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。

2. 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。

3. 发明申请

US20090158110A1 FORWARD AND REVERSE SHIFTING SELECTIVE HARQ COMBINING SCHEME FOR OFDMA SYSTEMS 有权
标题翻译： FORDMA系统的前向和反向移位选择性HARQ组合方案
公开(公告)号：US20090158110A1
公开(公告)日：2009-06-18
申请号：US11956278
申请日：2007-12-13
申请人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , Ju Won Park
发明人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , Ju Won Park
IPC分类号： H04L1/18 , G06F11/14
CPC分类号： H04L1/1845 , H04L1/1812
摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an OFDM/OFDMA receiver are provided. A combination of different types of HARQ combiners may be designed into the 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. Furthermore, the HARQ combiner type may be dynamically selected through forward and reverse shifting between the different types of HARQ combining schemes in an effort to decrease the bit error ratio (BER) without saturating the HARQ buffer.
摘要翻译：提供了一种用于在OFDM / 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。可以将不同类型的HARQ组合器的组合设计到接收机中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。此外，可以通过在不同类型的HARQ组合方案之间的正向和反向移位来动态地选择HARQ组合器类型，以努力降低误码率（BER）而不使HARQ缓冲器饱和。

4. 发明授权

US08548081B2 Methods and apparatus for diversity combining of repeated signals in OFDMA systems 失效
标题翻译： OFDMA系统中重复信号分集组合的方法和装置
公开(公告)号：US08548081B2
公开(公告)日：2013-10-01
申请号：US12034420
申请日：2008-02-20
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： H04B7/02
CPC分类号： H04B7/0857 , H04B7/0845 , H04L1/04 , H04L1/08
摘要： In accordance with a method for diversity combining in an orthogonal frequency division multiple access (OFDMA) system, repetition diversity equalization and combining may be performed with respect to received OFDMA signals. In addition, receiver antenna diversity equalization and combining may be performed with respect to the received OFDMA signals. The repetition diversity equalization and combining and the receiver antenna diversity equalization and combining may be performed in accordance with a maximum ratio combining (MRC) scheme.
摘要翻译：根据正交频分多址（OFDMA）系统中的分集组合的方法，可以针对所接收的OFDMA信号执行重复分集均衡和组合。此外，可以相对于所接收的OFDMA信号执行接收机天线分集均衡和组合。可以根据最大比组合（MRC）方案来执行重复分集均衡和组合以及接收机天线分集均衡和组合。

5. 发明授权

US08000411B2 Decoding scheme using multiple hypotheses about transmitted messages 有权
标题翻译：使用关于发送的消息的多个假设的解码方案
公开(公告)号：US08000411B2
公开(公告)日：2011-08-16
申请号：US11969857
申请日：2008-01-04
申请人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , Ju Won Park , Chun Woo Lee , Tae Ryun Chang
发明人： Jong Hyeon Park , Bok Tae Sim , Je Woo Kim , Serguei A. Glazko , Sameer Nanavati , Ju Won Park , Chun Woo Lee , Tae Ryun Chang
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04L1/0054 , H04L1/006 , H04L1/0072
摘要： A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.
摘要翻译：提供了一种用于解码无线通信传输的编码数据位的方法和装置。可以生成对应于编码数据位的已知位值的一组先验位值。可以从可能的解码路径中去除对应于与先验比特值不一致的解码数据比特的解码路径，并且通过从可能的解码路径的剩余解码路径中选择解码路径来解码编码数据比特，没有删除。可以评估每个对应于先前比特值的不同集合的多个假设，其中基于用于进一步处理的评估输出选择的假设的解码数据。

6. 发明授权

US08537931B2 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和装置
公开(公告)号：US08537931B2
公开(公告)日：2013-09-17
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： H03K9/00 , H04L27/00
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。

7. 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。

8. 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。

9. 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。

10. 发明授权

US08626096B2 Methods and apparatus for combining signals from multiple diversity sources 失效
标题翻译：用于组合来自多个分集源的信号的方法和装置
公开(公告)号：US08626096B2
公开(公告)日：2014-01-07
申请号：US12034954
申请日：2008-03-24
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： H04B17/02
CPC分类号： H04B7/0871 , H04B7/0857 , H04L1/06 , H04L1/08
摘要： A method for combining signals coming from multiple diversity sources may include performing maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity. The method may also include performing MRC-based equalization and combining for repetition diversity. The method may also include performing MRC-based equalization and combining for duplication diversity. The MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity may each be performed separately.
摘要翻译：用于组合来自多个分集源的信号的方法可以包括执行基于最大比组合（MRC）的均衡和用于接收机天线分集的组合。该方法还可以包括执行基于MRC的均衡和组合以用于重复分集。该方法还可以包括执行基于MRC的均衡和组合以用于复制分集。用于接收机天线分集的基于MRC的均衡和组合，用于重复分集的基于MRC的均衡和组合以及用于复制分集的基于MRC的均衡和组合可以分别进行。

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