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1.发明授权Methods and systems using norm approximation for maximum likelihood MIMO decoding 有权使用范数近似的最大似然MIMO解码的方法和系统公开(公告)号：US08374274B2
公开(公告)日：2013-02-12
申请号：US12351820
申请日：2009-01-10
申请人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
发明人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
CPC分类号： H04L25/03171 , H04L5/0023 , H04L25/03197 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： Certain embodiments of the present disclosure provide techniques for approximate computation of l2 norms as a part of the maximum likelihood (ML) detection: tri-maxmin, maxsum and sortsum algorithms. The proposed approximation schemes show better accuracy than conventional approximation schemes—the abssum and maxmin algorithms, while the computational complexity is very similar. The error rate performance of the ML detection that utilizes proposed norm-approximation techniques are very close to the reference ML detection with exact calculation of l2 norms, while the computational complexity is significantly smaller.
摘要翻译： 本公开的某些实施例提供了作为最大似然（ML）检测的一部分近似计算l2范数的技术：tri-maxmin，maxsum和sortsum算法。 所提出的近似方案显示出比传统的近似方案更好的精度 - abssum和maxmin算法，而计算复杂度非常相似。 利用提出的范数近似技术的ML检测的误码率性能与精确计算l2范数的参考ML检测非常接近，而计算复杂度显着更小。
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2.发明申请METHODS AND SYSTEMS USING NORM APPROXIMATION FOR MAXIMUM LIKELIHOOD MIMO DECODING 有权使用正态近似最大似然MIMO解码的方法和系统公开(公告)号：US20100091912A1
公开(公告)日：2010-04-15
申请号：US12351820
申请日：2009-01-10
申请人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
发明人： Jong Hyeon Park , Matthias Brehler , Brian Clarke Banister , Albert van Zelst , Tae Ryun Chang , Vincent K. Jones , Je Woo Kim
IPC分类号： H04L27/06
CPC分类号： H04L25/03171 , H04L5/0023 , H04L25/03197 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： Certain embodiments of the present disclosure provide techniques for approximate computation of l2 norms as a part of the maximum likelihood (ML) detection: tri-maxmin, maxsum and sortsum algorithms. The proposed approximation schemes show better accuracy than conventional approximation schemes—the abssum and maxmin algorithms, while the computational complexity is very similar. The error rate performance of the ML detection that utilizes proposed norm-approximation techniques are very close to the reference ML detection with exact calculation of l2 norms, while the computational complexity is significantly smaller.
摘要翻译： 本公开的某些实施例提供了作为最大似然（ML）检测的一部分近似计算l2范数的技术：tri-maxmin，maxsum和sortsum算法。 所提出的近似方案显示出比传统的近似方案更好的精度 - abssum和maxmin算法，而计算复杂度非常相似。 利用提出的范数近似技术的ML检测的误码率性能与精确计算l2范数的参考ML检测非常接近，而计算复杂度显着更小。
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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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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
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。
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5.发明授权公开(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
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。
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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。
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7.发明申请公开(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。
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8.发明授权公开(公告)号：US08259866B2
公开(公告)日：2012-09-04
申请号：US11969724
申请日：2008-01-04
申请人： Tae Ryun Chang , Jong Hyeon Park , Ju Won Park , Bok Tae Sim , Chun Woo Lee , Je Woo Kim
发明人： Tae Ryun Chang , Jong Hyeon Park , Ju Won Park , Bok Tae Sim , Chun Woo Lee , Je Woo Kim
CPC分类号： H03M13/00 , H03M13/3994
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.
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。
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9.发明授权Methods and apparatus for maximum ratio combining for duplicated signals in OFDMA systems 有权OFDMA系统中重复信号最大比组合的方法和装置公开(公告)号：US08094735B2
公开(公告)日：2012-01-10
申请号：US11969349
申请日：2008-01-04
申请人： Jong Hyeon Park , Tae Ryun Chang , Je Woo Kim
发明人： Jong Hyeon Park , Tae Ryun Chang , Je Woo Kim
CPC分类号： H04L27/2647 , H04L5/0046 , H04L25/022 , H04L2025/03414
摘要： In accordance with a method for processing a received orthogonal frequency division multiple access (OFDMA) signal that comprises a duplicated signal, sub-carriers within the OFDMA signal may be arranged into a duplicated format. The OFDMA signal may be equalized and combined after the sub-carriers have been arranged into the duplicated format. The equalizing and combining may be performed in accordance with a maximum ratio combining (MRC) scheme. The OFDMA signal may be demapped after the equalizing and combining is performed.
摘要翻译： 根据用于处理包括复制信号的接收的正交频分多址（OFDMA）信号的方法，OFDMA信号内的子载波可以被布置为重复格式。 OFDMA信号可以在子载波被布置成重复格式之后被均衡和组合。 可以根据最大比组合（MRC）方案来执行均衡和组合。 在执行均衡和组合之后，可以对OFDMA信号进行解映射。
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公开(公告)号：US20090290618A1
公开(公告)日：2009-11-26
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
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。
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