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1. 发明申请

WO2002060114A3 FILTER FOR MULTICARRIER SIGNALS 审中-公开
公开(公告)号：WO2002060114A3
公开(公告)日：2002-08-01
申请号：PCT/US2002/000089
申请日：2002-01-04
申请人： QUALCOMM INCORPORATED
发明人： EKVETCHAVIT, Thunyachate , VEDAM, Maruthy , KANG, Inyup
IPC分类号： H04L5/02
摘要： A multi-carrier filter for a wireless communications system employing a multi-carrier signal. The multi-carrier filter includes a first mechanism for receiving the multi-carrier signal and extracting carrier signal components A second mechanism filters the carrier signal components and outputs a demodulated and filtered multi-bandwidth signal. In the specific embodiment, the first mechanism includes a rotator. The multi-carrier signal is a 3x bandwidth multi-carrier signal which has three carrier components. The three carrier components include a center carrier, a left carrier, and a right carrier. The center carrier, the left carrier, and the right carrier are separated by approximately 1.25 MHz. The rotator is a lookup table rotator that includes a mechanism for selectively rotating the multi-carrier-signal clockwise or counter clockwise and outputting the left carrier or the right carrier, respectively.

2. 发明申请

WO2007035550A1 FRACTIONALLY-SPACED EQUALIZERS FOR SPREAD SPECTRUM WIRELESS COMMUNICATION 审中-公开
标题翻译：用于传播光谱无线通信的均匀空间均衡器
公开(公告)号：WO2007035550A1
公开(公告)日：2007-03-29
申请号：PCT/US2006/036137
申请日：2006-09-15
申请人： QUALCOMM INCORPORATED , SUBRAHMANYA, Parvathanathan , KANG, Inyup , FEI, Jia , SUNDARESAN, Rajesh
发明人： SUBRAHMANYA, Parvathanathan , KANG, Inyup , FEI, Jia , SUNDARESAN, Rajesh
IPC分类号： H04B1/707 , H04B7/08 , H04L25/03
CPC分类号： H04B1/71057 , H04B7/0669 , H04B7/0673 , H04B7/0845 , H04L25/03044 , H04L25/03292 , H04L2025/03509
摘要： This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is "fractionally spaced" which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.
摘要翻译：本公开描述了用于扩频无线通信的均衡技术。这些技术可以包括基于所估计的信道脉冲响应和所估计的信道方差估计信道脉冲响应，估计信道方差，以及为均衡器选择滤波器系数。此外，根据本公开，信道方差估计涉及对于不同接收样本的两个或多个协方差的估计。重要的是，均衡器是“分数间隔”的，这意味着均衡器定义分数滤波系数（滤波器抽头），不同于传统的均衡器，假设滤波器系数是以整数芯片间隔定义的。这些技术可以允许均衡器考虑天线分集，例如接收分集，发射分集，或者可能两者。

3. 发明申请

WO2003088606A3 DIRECT CURRENT OFFSET CANCELLATION FOR MOBILE STATION MODEMS USING DIRECT CONVERSION 审中-公开
公开(公告)号：WO2003088606A3
公开(公告)日：2003-10-23
申请号：PCT/US2003/011070
申请日：2003-04-09
申请人： QUALCOMM INCORPORATED
发明人： HOLENSTEIN, Christian , KANG, Inyup , SEVERSON, Matthew
IPC分类号： H04L25/06
摘要： A system and method for canceling DC offset for Mobile Station Modems having direct conversion architectures. The present invention is a fast acquiring DC offset cancellation block that provides rapid and accurate DC offset estimates and cancellation techniques to support direct conversion architectures. The fast acquiring DC offset cancellation block combines four mechanisms to rapidly acquire and remove a DC offset estimate after power up, temperature changes, receiver frequency changes, and gain setting changes by increasing high pass loop bandwidth and adjusting DC offset levels at baseband. After removing the DC offset in large portions, the high pass loop bandwidth is decreased to fine tune the previous estimate and to remove any small variation in DC offset due to receiver self-mixing products.

4. 发明申请

WO2003047092A3 DIRECT CONVERSION OF NARROW-BAND RF SIGNALS 审中-公开
公开(公告)号：WO2003047092A3
公开(公告)日：2003-06-05
申请号：PCT/US2002/038343
申请日：2002-11-27
申请人： QUALCOMM, INCORPORATED
发明人： SEVERSON, Matthew, L. , KANG, Inyup , RAGHUPATHY, Arun
IPC分类号： H03D3/00
摘要： A method and device for converting at least one narrow band RF signal, being suitable for transmission between at least one communications device suitable for receiving wide-band RF signals and at least one base station, to baseband. The method includes directly down-converting a signal spectrum including the at least one RF narrow-band signal to baseband such that the at least one narrow-band RF signal results at a low intermediate frequency (IF). And, digitally phase rotating the down-converted signal spectrum such that the at least one narrow-band RF signal is phase rotated from the low-IF to baseband.

5. 发明申请

WO2009158043A1 METHODS AND SYSTEMS FOR SPACE-TIME CODING SIGNAL DECODING USING MIMO DECODER 审中-公开
标题翻译：使用MIMO解码器的空时编码信号解码的方法和系统
公开(公告)号：WO2009158043A1
公开(公告)日：2009-12-30
申请号：PCT/US2009/031529
申请日：2009-01-21
申请人： QUALCOMM INCORPORATED , PARK, Jong Hyeon , BANISTER, Brian Clark , KANG, Inyup , KIM, Je Woo , HURT, James Y. , BREHLER, Matthias
发明人： PARK, Jong Hyeon , BANISTER, Brian Clark , KANG, Inyup , KIM, Je Woo , HURT, James Y. , BREHLER, Matthias
IPC分类号： H04L1/06
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解码器可以并入常规的最大比合并（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。

6. 发明申请

WO2004004166A1 METHOD AND SYSTEM FOR EFFICIENTLY SYNCHRONIZING CDMA DATA FRAMES 审中-公开
标题翻译：有效地同步CDMA数据帧的方法和系统
公开(公告)号：WO2004004166A1
公开(公告)日：2004-01-08
申请号：PCT/US2003/020387
申请日：2003-06-28
申请人： QUALCOMM INCORPORATED
发明人： KANG, Inyup , LEVIN, Mark D. , NEUFELD, Arthur J.
IPC分类号： H04B7/26
CPC分类号： H04B7/2668 , H04B7/216
摘要： Provided is a system and method for constructing a data message in a communications device including a processor configured to process sequentially transmitted messages. Each of the messages requires a predetermined number of data frames. The technique of the instant invention includes receiving portions of at least two of the transmitted messages in the processor. Each of the at least two received portions includes a subset of the predetermined number of data frames and excludes a remainder of the predetermined number of data frames. The subset of one of the received portions substantially matches the remainder of the other portion. Next, a determination is made as to whether a total number of the received subsets equals the predetermined number. Finally, a synthesized messaged is produced when the total number of the subsets is at least equal to the predetermined number. The synthesized message is formed of a combination of the subsets from each of the received portions.
摘要翻译：提供了一种用于在通信设备中构建数据消息的系统和方法，该通信设备包括被配置为处理顺序发送的消息的处理器。每个消息都需要预定数量的数据帧。本发明的技术包括在处理器中接收至少两个发送消息的部分。所述至少两个接收部分中的每一个包括预定数量的数据帧的子集，并且排除预定数量的数据帧的剩余部分。接收部分之一的子集基本上与另一部分的其余部分相匹配。接下来，确定接收到的子集的总数是否等于预定数。最后，当子集的总数至少等于预定数量时，产生合成的消息。合成消息由来自每个接收部分的子集的组合形成。

7. 发明申请

WO2003021806A1 INTERPOLATION OF CHANNEL SEARCH RESULTS 审中-公开
标题翻译：通道搜索结果的插值
公开(公告)号：WO2003021806A1
公开(公告)日：2003-03-13
申请号：PCT/US2002/027723
申请日：2002-08-30
申请人： QUALCOMM INCORPORATED
发明人： KANG, Inyup , ROH, Mark , JOHNSON, Brendon L.
IPC分类号： H04B1/707
CPC分类号： H04B1/70758 , H04B1/70757 , H04B1/7117
摘要： In general, the invention facilitates searching for energy peaks in spread spectrum wireless communivation systems with greater precision. More particulary, various embodiments of the invention may involve reporting not only an energy peak and its associated offset, but also the energy levels corresponding to one or more offsets occurring before and after the offset at which the energy peak occurs. Interpolation or extrapolation techniques may be used to predict the actual location of an energy peak based on the apparent location of the peak and the energy levels observed at surrounding offsets.
摘要翻译：通常，本发明便于更精确地搜索扩频无线通信系统中的能量峰值。更具体地，本发明的各种实施例可以包括不仅报告能量峰值及其相关联的偏移，还报告对应于发生能量峰值的偏移之前和之后发生的一个或多个偏移的能级。可以使用插值或外插技术来基于峰值的表观位置和在周围偏移处观察到的能量水平来预测能量峰值的实际位置。

8. 发明申请

WO2010151847A1 DYNAMICALLY CHANGING A TRANSMITTER SAMPLING FREQUENCY FOR A DIGITAL-TO-ANALOG CONVERTER (DAC) TO REDUCE INTERFERENCE FROM DAC IMAGES 审中-公开
标题翻译：动态更改用于数字模拟转换器（DAC）的发射机采样频率，以减少DAC图像的干扰
公开(公告)号：WO2010151847A1
公开(公告)日：2010-12-29
申请号：PCT/US2010/040111
申请日：2010-06-26
申请人： QUALCOMM INCORPORATED , MARRA, Thomas D. , LAU, Soon-Seng , KANG, Inyup , MIRBAGHERI, Arash
发明人： MARRA, Thomas D. , LAU, Soon-Seng , KANG, Inyup , MIRBAGHERI, Arash
IPC分类号： H04B1/52 , H04B1/04 , H03M3/00
CPC分类号： H04B1/525 , H03M1/661 , H04B1/0475
摘要： A method for interference reduction is described. The method is implemented in a wireless device. It is determined that a page is going to be received via a secondary receiver. It is also determined that a digital-to-analog converter (DAC) image from a transmitter will cause interference with the secondary receiver when the page is received. A sampling frequency of the DAC for the transmitter is changed so that there are not any DAC images from the transmitter that will cause interference with the secondary receiver.
摘要翻译：描述了一种减少干扰的方法。该方法在无线设备中实现。确定将通过次级接收器接收页面。还确定，当接收到页面时，来自发射器的数模转换器（DAC）图像将引起与次级接收机的干扰。改变发射机的DAC的采样频率，使得没有来自发射机的任何DAC图像将导致与次要接收机的干扰。

9. 发明申请

WO2006122101A3 REDUCED CELL ACQUISITION TIME 审中-公开
公开(公告)号：WO2006122101A3
公开(公告)日：2006-11-16
申请号：PCT/US2006/017879
申请日：2006-05-08
申请人： QUALCOMM INCORPORATED , KANG, Inyup
发明人： KANG, Inyup
IPC分类号： H04B1/707
摘要： A method and apparatus for reduced acquisition time are disclosed. In one embodiment, such as in a W-CDMA system, a receiver receives one or more signals from remote stations, each signal comprising a scrambling code associated with one of a plurality of code groups, each code group identified by a unique series of a synchronization codes. A searcher identifies a subset of first synchronization codes, and a processor selects one or more hypotheses in response to the received subset. The searcher may then perform searching for a scrambling code in accordance with the one or more hypotheses. The scrambling code search may be performed in parallel with continued synchronization code searching. Various other embodiments are also disclosed.

10. 发明申请

WO2005086358A1 EFFICIENT MULTI-SYMBOL DEINTERLEAVER 审中-公开
标题翻译：有效的多符号检测器
公开(公告)号：WO2005086358A1
公开(公告)日：2005-09-15
申请号：PCT/US2005/006635
申请日：2005-02-25
申请人： QUALCOMM INCORPORATED , PAN, Hanfang , KANG, Inyup , KRYSL, James
发明人： PAN, Hanfang , KANG, Inyup , KRYSL, James
IPC分类号： H03M13/27
CPC分类号： H03M13/2764 , H03M13/2703
摘要： Embodiments disclosed herein address the need in the art for an efficient multi-symbol deinterleaver. In one aspect, a plurality of memory banks are deployed to receive and simultaneously store a plurality of values, such as soft decision values determined from a modulation constellation, in accordance with a storing pattern. In another aspect, the storing pattern comprises a plurality of cycles, a selected subset of the plurality of memory banks and an address offset for use in determining the address for storing into the respective memory banks indicated for each cycle. In yet another aspect, the stored values may be accessed in order with a sequentially increasing index, such as an address. Various other aspects are also presented. These aspects have the benefit of allowing multiple symbol values to be deinterleaved in an efficient manner, thus meeting computation time constraints, and conserving power.
摘要翻译：本文公开的实施例解决了本领域对于有效的多符号解交织器的需要。在一个方面，多个存储体被部署以根据存储模式来接收并同时存储多个值，诸如从调制星座确定的软判决值。在另一方面，存储模式包括多个周期，多个存储体的选定子集和用于确定用于存储到为每个周期指示的相应存储体中的地址的地址偏移。在另一方面，可以按顺序增加的索引（诸如地址）按顺序访问所存储的值。还提出了各种其他方面。这些方面具有允许以有效的方式解码多个符号值的好处，从而满足计算时间限制并节省功率。

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