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1. 发明申请

WO2003061180A1 APPARATUS AND METHOD FOR DETERMINING COMBINER WEIGHTS AND LOG-LIKELIHOOD RATIOS FOR SYMBOLS TRANSMITTED IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于确定无线通信系统中传输的符号的组合权重和日志比特率的装置和方法
公开(公告)号：WO2003061180A1
公开(公告)日：2003-07-24
申请号：PCT/US2003/000497
申请日：2003-01-07
申请人： QUALCOMM, INCORPORATED
发明人： JAYARAMAN, Srikant , CORBATON, Ivan, Jesus, Fernandez , SMEE, John, E.
IPC分类号： H04L1/00
CPC分类号： H04L1/005 , H04B1/71057 , H04B1/712 , H04L1/0054 , H04L1/02
摘要： Methods and apparatus are presented herein for determining log likelihood ratios (LLRs) for code symbols. Pilot and code symbols are transmitted over diversity channels, which can be modeled as a slowly time varying system. A formulation for a multipath gain vector is derived herein based on the slowly time varying model. The multipath gain vector is then solved using iterative procedures (550). Using the solved multipath gain vector, the LLRs for code symbols are computed.
摘要翻译：本文给出了用于确定代码符号的对数似然比（LLR）的方法和装置。导频和码符号在分集信道上传输，可以将其建模为缓慢时变的系统。本文基于缓慢时间变化的模型导出多径增益矢量的公式。然后使用迭代过程（550）来解决多径增益矢量。使用求解的多径增益矢量，计算代码符号的LLR。

2. 发明公开

EP2347525A1 METHOD AND APPARATUS FOR SUPPORTING MULTI-USER AND SINGLE-USER MIMO IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：方法和设备，可支持多用户和单用户MIMO在无线通信系统
公开(公告)号：EP2347525A1
公开(公告)日：2011-07-27
申请号：EP09791295.0
申请日：2009-08-07
申请人： QUALCOMM Incorporated
发明人： HOU, Jilei , SMEE, John, E. , MALLADI, Durga Prasad , HASSANPOUR GHADY, Navid , MALLIK, Siddhartha
IPC分类号： H04B7/02 , H04B7/04
CPC分类号： H04B7/024 , H04B7/0417 , H04B7/0452 , H04B7/0626 , H04B7/0639
摘要： Techniques for supporting distributed multiple-input multiple-output (MIMO) transmissions are described. In one design, a user equipment (UE) determines channel estimates for multiple cells and reports the channel estimates. The UE thereafter receives a data transmission sent by the multiple cells to the UE based on the channel estimates. The data transmission may include at least one data stream, and each data stream may be sent by one cell or the multiple cells to the UE. In another design, a UE determines first and second channel estimates for first and second cells, respectively, and reports the channel estimates. The UE then receives a first data transmission sent by the first cell to the UE based on the first channel estimate. The UE also receives a second data transmission sent by the second cell to another UE and steered away from the UE based on the second channel estimate.

3. 发明申请

WO2004112339A1 DECISION FEEDBACK EQUALIZER WITH COMBINED CCK ENCODING-DECODING IN FEEDBACK FILTERING 审中-公开
标题翻译：具有组合CCK编码解码的反馈反馈的反馈反馈均衡器
公开(公告)号：WO2004112339A1
公开(公告)日：2004-12-23
申请号：PCT/US2004/017161
申请日：2004-05-28
申请人： QUALCOMM INCORPORATED , ABRISHAMKAR, Farrokh , SMEE, John, E. , GLAZKO, Serguei
发明人： ABRISHAMKAR, Farrokh , SMEE, John, E. , GLAZKO, Serguei
IPC分类号： H04L25/03
CPC分类号： H04L23/02 , H04L25/03057 , H04L2025/03375 , H04L2025/0349 , H04L2025/03611
摘要： A decision feedback equalizer includes a chip estimate buffer that forms chip estimates into a vector. A CCK decoder decodes the vector of chip estimates, and a CCK encoder, connected with the CCK decoder, re-encodes the vector of chip estimates into a valid CCK code word. At the same time, a chip slicer provides direct sliced chips from the chip estimates. An update module then forms a hybrid vector from the valid CCK code-word and the direct sliced chips for input to the feedback filter of the decision feedback equalizer. The hybrid feedback filter input vector reflects the CCK coding gain of its re-encoded portion thereby reducing the estimated chip error rate to improve the performance of the decision feedback equalizer.
摘要翻译：判决反馈均衡器包括将码片估计形成向量的码片估计缓冲器。 CCK解码器解码芯片估计的向量，并且与CCK解码器连接的CCK编码器将芯片估计的向量重新编码为有效的CCK码字。同时，芯片切片机从芯片估计提供直接切片芯片。然后，更新模块从有效的CCK码字和直接切片的芯片形成混合矢量，以输入到判决反馈均衡器的反馈滤波器。混合反馈滤波器输入矢量反映其重新编码部分的CCK编码增益，从而降低估计的芯片误码率，以提高判决反馈均衡器的性能。

4. 发明申请

WO2003041287A1 METHOD AND APPARATUS FOR MITIGATING ADJACENT CHANNEL INTERFERENCEIN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于减轻邻近通道干扰的无线通信系统的方法和装置
公开(公告)号：WO2003041287A1
公开(公告)日：2003-05-15
申请号：PCT/US2002/034808
申请日：2002-10-29
申请人： QUALCOMM, INCORPORATED
发明人： JAYARAMAN, Srikant , SMEE, John, E. , CORBATON, Ivan, Jesus, Fernandez
IPC分类号： H04B1/10
CPC分类号： H04B1/1036
摘要： Techniques for detecting and mitigating adjacent channel interference (ACI) in a wireless (e.g., CDMA) communication system. In one aspect, ACI may be determined by signaling or detected by filtering a pre-processed signal in each frequency range where ACI may be present (e.g., with a respective bandpass filter), estimating the energy of the filtered signal for each frequency range, comparing the estimated energy against an ACI threshold, and indicating the presence or absence of ACI at each frequency range based on the result of the comparison. In another aspect, a selectable filter (e.g., a FIR filter) having a number of possible filter responses (e.g., provided by a number of sets of filter coefficients) may be used to provide filtering for the pre-processed signal and to reject any detected ACI. One of the possible filter responses is selected for use depending on whether and where ACI has been detected.
摘要翻译：用于在无线（例如CDMA）通信系统中检测和减轻相邻信道干扰（ACI）的技术。在一个方面，可以通过信令来确定ACI，或者通过对可能存在ACI的每个频率范围（例如，使用相应的带通滤波器）滤波预处理的信号来检测ACI，估计每个频率范围的滤波信号的能量，将估计的能量与ACI阈值进行比较，并且基于比较结果来指示每个频率范围内是否存在ACI。在另一方面，可以使用具有多个可能的滤波器响应（例如，由多个滤波器系数组提供）的可选滤波器（例如，FIR滤波器）来为预处理的信号提供滤波并且拒绝任何检测到ACI。选择一种可能的过滤器响应来使用，具体取决于是否检测到ACI。

5. 发明申请

WO2003001761A1 METHOD AND APPARATUS FOR TRANSMITTING DATA IN A TIME DIVISION DUPLEX SYSTEM 审中-公开
标题翻译：用于在时分双工系统中传输数据的方法和装置
公开(公告)号：WO2003001761A1
公开(公告)日：2003-01-03
申请号：PCT/US2002/019404
申请日：2002-06-17
申请人： QUALCOMM INCORPORATED
发明人： JALALI, Ahmad , SMEE, John, E. , WALLACE, Mark
IPC分类号： H04L27/26
CPC分类号： H04L1/0032 , H04B7/0434 , H04B7/0626 , H04L1/0003 , H04L1/0013 , H04L1/0026 , H04L1/0034 , H04L1/06 , H04L5/0023 , H04L25/0204 , H04L25/0224 , H04L25/0226 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03426
摘要： Techniques to process data for transmission in a time division duplexed (TDD) communication system. In one aspect, the frequency response of a forward link is estimated at a base station based on reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function based on the pilots transmitted by the terminal, "calibrates" the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols based on weights derived from the forward transfer function. In another aspect, the terminal estimates the "quality " of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.
摘要翻译：在时分双工（TDD）通信系统中处理用于传输的数据的技术。在一个方面，基于来自终端的反向链路传输（例如，导频）在基站处估计前向链路的频率响应。在前向链路上的数据传输之前，基站基于终端发送的导频来确定反向传递函数，使用校准功能“校准”反向传递函数，以导出前向传递函数的估计，以及前提条件基于从前向传递函数导出的权重的调制符号。在另一方面，终端估计前向链路的“质量”，并将该信息提供给基站。然后，基站使用该信息在发送之前对数据进行适当的编码和调制，使得所发送的数据能够以期望的性能水平由终端接收。

6. 发明申请

WO2002100033A1 METHOD AND APPARATUS FOR ESTIMATING THE SIGNAL TO INTERFERENCE RATIO OF A WIRELESS CHANNEL 审中-公开
标题翻译：将信号估计为无线信道的干扰比的方法和装置
公开(公告)号：WO2002100033A1
公开(公告)日：2002-12-12
申请号：PCT/US2002/017038
申请日：2002-05-31
申请人： QUALCOMM INCORPORATED
发明人： CORBATON, Ivan, Jesus, Fernandez , SMEE, John, E. , JAYARAMAN, Srikant
IPC分类号： H04L1/20
CPC分类号： H04L1/20 , H04L1/0002 , H04L1/0025 , H04L25/03006
摘要： Method and apparatus that compensates for overestimation of channel SINR due to overfitting of an adaptive equalizer (108) to the pilot portion (202) of a received frame (200). The SINR of a wireless channel (110) is estimated by adapting an adaptive equalizer using the pilot portion of the frame, applying the adaptive equalizer to a non-pilot portion of the frame (204, 206), determining a parameter using the adaptive equalizer output, and estimating the SINR of the wireless channel using the parameter. The parameter can include, for example, the means square error (MSE) or the bias of the equalizer output. The accuracy of the SINR estimate according to this aspect of the present invention is thereby improved (as compared to a SINR estimate based on parameters calculated during the pilot interval) because the adaptive equalizer is not overfit to the control (204) or data (206) portion of the frame.
摘要翻译：用于补偿由于自适应均衡器（108）过度拟合到接收帧（200）的导频部分（202）的信道SINR过高估计的方法和装置。通过使用所述帧的导频部分来适配自适应均衡器来估计无线信道（110）的SINR，将所述自适应均衡器应用于所述帧（204,206）的非导频部分，使用所述自适应均衡器确定参数输出，并使用参数估计无线信道的SINR。该参数可以包括例如均方误差（MSE）或均衡器输出的偏置。因此，由于自适应均衡器不适合于控制（204）或数据（206），所以根据本发明的这个方面的SINR估计的精度因此得到改善（与基于在导频间隔期间计算的参数的SINR估计相比较））部分。

7. 发明申请

WO2010017334A1 COORDINATED TRANSMISSIONS BETWEEN CELLS OF A BASE STATION IN A WIRELESS COMMUNICATIONS SYSTEM 审中-公开
标题翻译：无线通信系统中基站的电话之间的协调传输
公开(公告)号：WO2010017334A1
公开(公告)日：2010-02-11
申请号：PCT/US2009/052908
申请日：2009-08-06
申请人： QUALCOMM INCORPORATED , HOU, Jilei , FARAJIDANA, Amir , YANG, Lin , SMEE, John, E. , HASSANPOUR GHADY, Navid , MALLIK, Siddhartha , MALLADI, Durga, Prasad
发明人： HOU, Jilei , FARAJIDANA, Amir , YANG, Lin , SMEE, John, E. , HASSANPOUR GHADY, Navid , MALLIK, Siddhartha , MALLADI, Durga, Prasad
IPC分类号： H04B7/02 , H04B7/04
CPC分类号： H04B7/024 , H04B7/0417 , H04B7/0491 , H04B7/0632 , H04L5/005 , H04L25/0206
摘要： Systems and methods for providing coverage to a first cell (104i) through a first antenna system (106i) and coverage to a second cell (104 j) through a second antenna system (106g). Data is also processed for transmission to a mobile device (108i) in the first cell using the first and second antenna systems.
摘要翻译：通过第一天线系统（106i）向第一小区（104i）提供覆盖并通过第二天线系统（106g）向第二小区（104j）提供覆盖的系统和方法。还使用第一和第二天线系统处理数据以传输到第一小区中的移动设备（108i）。

8. 发明申请

WO2004010665A2 METHOD AND APPARATUS FOR HYBRID DECISION FEEDBACK EQUALIZATION 审中-公开
标题翻译：混合决策反馈均衡的方法和装置
公开(公告)号：WO2004010665A2
公开(公告)日：2004-01-29
申请号：PCT/US2003/022594
申请日：2003-07-18
申请人： QUALCOMM INCORPORATED
发明人： JAYARAMAN, Srikant , FERNANDEZ CORBATON, Ivan Jesus , SMEE, John, E.
IPC分类号： H04L25/00
CPC分类号： H04L25/03057 , H04L25/03267 , H04L2025/0349 , H04L2025/03496 , H04L2025/03611
摘要： A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost function for the equalizer, including a correction term as a function of the energy of the filter coefficients. The equalizer includes a coefficient generator responsive to the correction term. One embodiment estimates a transmitted symbol from a received sample as a function of Signal-to-Interference and Noise Ratio (SINR) of the received sample. The received sample is quantized and mapped to a region of a grid overlaid on the transmitted symbol constellation. The region may correspond to a symbol estimate value or may be processed further to obtain a symbol estimate value.
摘要翻译：用于判决反馈均衡器的方法和装置，其中校正项用于补偿限幅器误差，从而避免误差传播。均衡器的滤波器系数被选择为使得均衡器的成本函数最小化，包括作为滤波器系数的能量的函数的校正项。均衡器包括响应于校正项的系数发生器。一个实施例根据所接收采样的信号与干扰和噪声比（SINR）来估计来自接收采样的发送符号。量化所接收的采样并将其映射到覆盖在发送的符号星座上的网格的区域。该区域可以对应于符号估计值或者可以被进一步处理以获得符号估计值。

9. 发明申请

WO2010017482A1 METHOD AND APPARATUS FOR SUPPORTING MULTI-USER AND SINGLE-USER MIMO IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中支持多用户和单用户MIMO的方法和装置
公开(公告)号：WO2010017482A1
公开(公告)日：2010-02-11
申请号：PCT/US2009/053162
申请日：2009-08-07
申请人： QUALCOMM INCORPORATED , HOU, Jilei , SMEE, John, E. , MALLADI, Durga Prasad , HASSANPOUR GHADY, Navid , MALLIK, Siddhartha
发明人： HOU, Jilei , SMEE, John, E. , MALLADI, Durga Prasad , HASSANPOUR GHADY, Navid , MALLIK, Siddhartha
IPC分类号： H04B7/02 , H04B7/04
CPC分类号： H04B7/024 , H04B7/0417 , H04B7/0452 , H04B7/0626 , H04B7/0639
摘要： Techniques for supporting distributed multiple-input multiple-output (MIMO) transmissions are described. In one design, a user equipment (UE) determines channel estimates for multiple cells and reports the channel estimates. The UE thereafter receives a data transmission sent by the multiple cells to the UE based on the channel estimates. The data transmission may include at least one data stream, and each data stream may be sent by one cell or the multiple cells to the UE. In another design, a UE determines first and second channel estimates for first and second cells, respectively, and reports the channel estimates. The UE then receives a first data transmission sent by the first cell to the UE based on the first channel estimate. The UE also receives a second data transmission sent by the second cell to another UE and steered away from the UE based on the second channel estimate.
摘要翻译：描述了用于支持分布式多输入多输出（MIMO）传输的技术。在一种设计中，用户设备（UE）确定多个小区的信道估计并报告信道估计。 UE然后基于信道估计来接收由多个小区发送到UE的数据传输。数据传输可以包括至少一个数据流，并且每个数据流可以由一个小区或多个小区发送到UE。在另一种设计中，UE分别为第一和第二小区确定第一和第二信道估计，并报告信道估计。然后，UE基于第一信道估计来接收第一小区向UE发送的第一数据传输。 UE还接收由第二小区发送到另一个UE的第二数据传输，并且基于第二信道估计导向远离UE。

10. 发明申请

WO2004077696A1 EQUALIZATION OF MULTIPLE SIGNALS RECEIVED FOR SOFT HANDOFF IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：在无线通信系统中接收到用于软交换的多个信号的均衡
公开(公告)号：WO2004077696A1
公开(公告)日：2004-09-10
申请号：PCT/US2004/005565
申请日：2004-02-23
申请人： QUALCOMM INCORPORATED , JAYARAMAN, Srikant , SMEE, John, E. , FERNANDEZ-CORBATON, Ivan, Jesus
发明人： JAYARAMAN, Srikant , SMEE, John, E. , FERNANDEZ-CORBATON, Ivan, Jesus
IPC分类号： H04B7/02
CPC分类号： H04L25/03038 , H04B7/022 , H04L25/0244 , H04L25/0256 , H04L2025/03375 , H04L2025/03426 , H04L2025/03477 , H04L2025/03605 , H04W24/00 , H04W36/08 , H04W36/18
摘要： Techniques for performing equalization of multiple signals received by a terminal in soft handoff with multiple base stations. The received signal at the terminal is conditioned and digitized to provide a stream of received samples (y m ), which is then equalized/filtered (410) with multiple sets of coefficients to provide multiple streams of transmit chip estimates (X k ). One set of coefficients (f k ) is provided for each base station and is used to provide a corresponding stream of transmit chip estimates. The multiple streams of transmit chip estimates are further processed (420) to provide multiple streams of data symbol estimates (d k ), one stream of data symbol estimates for each base station. The multiple streams of data symbol estimates are then scaled (430) with multiple scaling factors (α k ) and combined (432) to provide a stream of combined data symbol estimates (d k ). The processing for the multiple base stations may be performed by a single hardware unit in a time division multiplexed manner.
摘要翻译：用于在与多个基站的软切换中执行终端接收的多个信号的均衡的技术。在终端处接收的信号被调节并数字化以提供接收样本流（ym），然后将其与多组系数进行均衡/滤波（410），以提供多个发射芯片估计流（Xk）。为每个基站提供一组系数（fk），并用于提供相应的传输芯片估计流。进一步处理（420）发射芯片估计的多个流以提供数据符号估计（dk）的多个流，每个基站的数据符号估计的一个流。然后用多个缩放因子（alphak）和组合（432）对多个数据符号估计流进行缩放（430）以提供组合数据符号估计（dk）的流。多个基站的处理可以由时分多路复用的单个硬件单元执行。

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