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1. 发明申请

WO2010045033A3 METHODS AND SYSTEMS USING NORM APPROXIMATION FOR MAXIMUM LIKELIHOOD MIMO DECODING 审中-公开
标题翻译：用最大似然MIMO解码的正则逼近方法和系统
公开(公告)号：WO2010045033A3
公开(公告)日：2010-09-16
申请号：PCT/US2009059147
申请日：2009-09-30
申请人： QUALCOMM INC , PARK JONG HYEON , BREHLER MATTHIAS , BANISTER BRIAN CLARKE , VAN ZELST ALLERT , CHANG TAE RYUN , JONES IV VINCENT K , KIM JE WOO
发明人： PARK JONG HYEON , BREHLER MATTHIAS , BANISTER BRIAN CLARKE , VAN ZELST ALLERT , CHANG TAE RYUN , JONES IV VINCENT K , KIM JE WOO
IPC分类号： H04L25/03
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 l 2 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 l 2 norms, while the computational complexity is significantly smaller.
摘要翻译：本公开的某些实施例提供了用于近似计算l 2个范数作为最大似然（ML）检测的一部分的技术：tri-maxmin，maxsum和sortsum算法。所提出的近似方案显示比传统近似方案（abssum和maxmin算法）更好的准确性，而计算复杂度非常相似。使用所提出的范数逼近技术的ML检测的误差率性能非常接近参考ML检测，精确计算l 2个范数，而计算复杂度显着更小。

2. 发明申请

WO2010033437A3 METHODS AND SYSTEMS FOR MAXIMUM-LIKELIHOOD DETECTION USING POST-SQUARING COMPENSATION 审中-公开
标题翻译：使用后置补偿的最大似然检测的方法和系统
公开(公告)号：WO2010033437A3
公开(公告)日：2010-09-16
申请号：PCT/US2009056759
申请日：2009-09-12
申请人： QUALCOMM INC , PARK JONG HYEON , VAN ZELST ALLERT , BANISTER BRIAN CLARKE , KIM JE WOO , BREHLER MATTHIAS , JONES IV VINCENT K
发明人： PARK JONG HYEON , VAN ZELST ALLERT , BANISTER BRIAN CLARKE , KIM JE WOO , BREHLER MATTHIAS , JONES IV VINCENT K
IPC分类号： H04L25/03
CPC分类号： H04L25/03171 , H04L25/03197 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A "post-squaring" detection algorithm, and related devices, that may reduce the complexity of maximum likelihood detection (MLD) schemes while preserving their performance is provided. Rather than search for optimum metrics (such as minimum distance metrics) based on squared norm values, a search may be based on un-squared norm metrics, and the squaring may be postponed, for example, until subsequent log-likelihood ratio (LLR) computation. For certain embodiments, approximations of un-squared norm values may significantly reduce computation complexity.
摘要翻译：提供了可以降低最大似然检测（MLD）方案的复杂性同时保持其性能的“后置”检测算法和相关设备。搜索可以基于平方范数，而不是基于平方范数搜索最佳度量（例如最小距离度量），并且可以延迟平方，例如直到后续的对数似然比（LLR）计算。对于某些实施例，非平方范数值的近似可以显着降低计算复杂度。

3. 发明申请

WO2011106264A2 MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION 审中-公开
标题翻译：多通道无线通信多用途解决方案
公开(公告)号：WO2011106264A2
公开(公告)日：2011-09-01
申请号：PCT/US2011025552
申请日：2011-02-18
申请人： QUALCOMM INC , MCCLOUD MICHAEL L , BREHLER MATTHIAS , PARK JU WON , PARK JONG HYEON , KIM JE WOO , KANG INYUP , BANISTER BRIAN C
发明人： MCCLOUD MICHAEL L , BREHLER MATTHIAS , PARK JU WON , PARK JONG HYEON , KIM JE WOO , KANG INYUP , BANISTER BRIAN C
CPC分类号： H04L25/03229 , H04B7/0413 , H04L25/03242 , H04L25/03318 , H04L2025/0342 , H04L2025/03426
摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.
摘要翻译：这里描述了降低复杂度或提高对多信道无线通信的接收无线数据流解映射的准确性。作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。在其他示例中，可以对子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。根据至少另一个示例，算法的对数项可以用非对数函数近似，例如查找表，串联展开，多项式近似等。这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

4. 发明申请

WO2010091216A3 METHODS AND SYSTEMS FOR LEAST SQUARES BLOCK CHANNEL ESTIMATION 审中-公开
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：WO2010091216A3
公开(公告)日：2011-02-24
申请号：PCT/US2010023250
申请日：2010-02-04
申请人： QUALCOMM INC , YU YUANNING , HURT JAMES Y , PARK JONG HYEON , KIM JE WOO
发明人： YU YUANNING , HURT JAMES Y , PARK JONG HYEON , KIM JE WOO
IPC分类号： H04L25/02
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。

5. 发明申请

WO2010078061A3 METHODS AND SYSTEMS FOR PAPR REDUCTION IN SC-FDMA SYSTEMS 审中-公开
标题翻译：用于SC-FDMA系统中的PAPR降低的方法和系统
公开(公告)号：WO2010078061A3
公开(公告)日：2010-12-16
申请号：PCT/US2009068605
申请日：2009-12-17
申请人： QUALCOMM INC , NARASIMHA MADIHALLY J , KIM JE WOO , YU YUANNING , PARK JONG HYEON
发明人： NARASIMHA MADIHALLY J , KIM JE WOO , YU YUANNING , PARK JONG HYEON
IPC分类号： H04L27/26
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用于单载波频分多址（SC-FDMA）系统中的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/或频域中操作SC-FDMA传输信号。

6. 发明申请

WO2008057584A3 PREAMBLE DETECTION AND SYNCHRONIZATION IN OFDMA WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译： OFDMA无线通信系统中的前瞻性检测和同步
公开(公告)号：WO2008057584A3
公开(公告)日：2009-04-09
申请号：PCT/US2007023547
申请日：2007-11-07
申请人： QUALCOMM INC , ZHU JIE , PARK JONG HYEON , KIM JE WOO
发明人： ZHU JIE , PARK JONG HYEON , KIM JE WOO
IPC分类号： H04K1/10
CPC分类号： H04L27/2656 , H04L5/0007 , H04L27/2684
摘要： An embodiment of the invention is a technique for preamble detection and synchronization. A symbol correlation of a sequence of symbols is computed in a correlation window using one of a time-domain correlation and a frequency-domain correlation. The sequence of symbols is received in an orthogonal frequency division multiple access (OFDMA) wireless communication. A symbol is verified from the symbol correlation. The symbol is one of a preamble symbol and a data symbol.
摘要翻译：本发明的实施例是用于前导码检测和同步的技术。使用时域相关和频域相关之一，在相关窗中计算符号序列的符号相关性。在正交频分多址（OFDMA）无线通信中接收符号序列。从符号相关性验证符号。符号是前导符号和数据符号之一。

7. 发明申请

WO2008058080A3 METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于无线通信系统中的信号和定时检测的方法和装置
公开(公告)号：WO2008058080A3
公开(公告)日：2008-07-10
申请号：PCT/US2007083647
申请日：2007-11-05
申请人： QUALCOMM INC , PARK JU WON , PARK JONG HYEON , KIM JE WOO
发明人： PARK JU WON , PARK JONG HYEON , KIM JE WOO
IPC分类号： H04L27/26
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，可以确定接收到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。至少一个相关值可以基于初始假设来确定。该至少一个相关值可以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的程度。

8. 发明申请

WO2010008845A3 METHOD AND SYSTEM FOR OVERHEAD REDUCTION IN A WIRELESS COMMUNICATION NETWORK 审中-公开
标题翻译：在无线通信网络中减少覆盖的方法和系统
公开(公告)号：WO2010008845A3
公开(公告)日：2010-10-21
申请号：PCT/US2009048293
申请日：2009-06-23
申请人： QUALCOMM INC , GLAZKO SERGUEI , BREHLER MATTHIAS , KIM JE WOO , MAKHIJANI MAHESH A
发明人： GLAZKO SERGUEI , BREHLER MATTHIAS , KIM JE WOO , MAKHIJANI MAHESH A
IPC分类号： H04L5/00
CPC分类号： H04W72/1231 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04W72/1273
摘要： Methods and apparatus are provided for increasing throughput in a wireless communication system by reducing the amount of overhead transmitted to certain user terminals. Overhead due to control information may be reduced for these certain user terminals by selecting a low repetition factor. Overhead may be further reduced for these certain user terminals by selecting a modulation/coding scheme with a higher data rate for transmitting the control information. The selection may be based on channel conditions associated with the user terminals, such as signal-to-interference-plus-noise ratios (SINRs).
摘要翻译：提供了通过减少传送到某些用户终端的开销量来提高无线通信系统中的吞吐量的方法和装置。通过选择低重复因子，可能会降低这些特定用户终端由于控制信息而导致的开销。通过选择具有较高数据速率的调制/编码方案来传送控制信息，可以进一步减少这些特定用户终端的开销。选择可以基于与用户终端相关联的信道条件，例如信号与干扰加噪声比（SINR）。

9. 发明申请

WO2007142858A2 MULTI INPUT MULTI OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) COMMUNICATION SYSTEM 审中-公开
标题翻译：多输入多输出（MIMO）正交频分多址（OFDMA）通信系统
公开(公告)号：WO2007142858A2
公开(公告)日：2007-12-13
申请号：PCT/US2007012401
申请日：2007-05-24
申请人： TELECIS WIRELESS INC , PARK JONG HYEON , PARK JU WON , KIM JE WOO
发明人： PARK JONG HYEON , PARK JU WON , KIM JE WOO
IPC分类号： H04L1/02 , H04L27/00
CPC分类号： H04L1/0015 , H04B7/0417 , H04B7/0608 , H04B7/0689 , H04B7/0814 , H04B7/0871 , H04L1/0001 , H04L1/06 , H04L27/2608
摘要： An embodiment of the present invention is a technique to process signals in a communication system. In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae. The signal processor units are controlled by operational mode control signals. A channel estimator estimates channel responses using the processed signals according to an operational mode. An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses. A Carrier to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal, The estimated CENR is used to generate the operational mode control signals. In another embodiment, a sub-carrier allocation controller generates sub-carrier allocation signals using an allocation base. A channel status information (CSI) and multiple input multiple output (MMO) controller generates sub- carrier CSI signals and operational mode control signals using the sub-carrier allocation signals, estimated channel responses provided by.a channel estimator, and an estimated CINR provided by an CINR estimator. The operational mode control signals select one of a plurality of antenna paths associated with a plurality of antennae. A transmitter diversity processor generates transmitter diversity signals as a function of at least a mapped signal Mk, the sub-carrier CSI signals, and the operational mode control signals.
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。在一个实施例中，多个信号处理单元处理从多个天线接收的信号。信号处理器单元由操作模式控制信号控制。信道估计器根据操作模式使用经处理的信号来估计信道响应。均衡器和组合器使用接收的信号和估计的信道响应产生均衡和组合的信号。载波干扰噪声比（CINR）估计器从均衡和组合信号估计CINR，估计的CENR用于生成操作模式控制信号。在另一实施例中，子载波分配控制器使用分配基地产生副载波分配信号。信道状态信息（CSI）和多输入多输出（MMO）控制器使用子载波分配信号，由信道估计器提供的估计信道响应和估计的CINR来产生子载波CSI信号和操作模式控制信号由CINR估计器。操作模式控制信号选择与多个天线相关联的多个天线路径之一。发射机分集处理器生成作为至少映射信号Mk，子载波CSI信号和操作模式控制信号的函数的发射机分集信号。

10. 发明申请

WO2007142913A3 ENHANCED CHANNEL ESTIMATION FOR COMMUNICATION SYSTEM RECEIVER 审中-公开
标题翻译：通信系统接收机的增强信道估计
公开(公告)号：WO2007142913A3
公开(公告)日：2008-03-13
申请号：PCT/US2007012619
申请日：2007-05-29
申请人： TELECIS WIRELESS INC , IM SE BIN , PARK JONG HYEON , KIM JE WOO , CHOI HYUNG JIN
发明人： IM SE BIN , PARK JONG HYEON , KIM JE WOO , CHOI HYUNG JIN
IPC分类号： H04K1/10 , H04L27/28
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加窗的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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