公开(公告)号：WO2011106264A3

公开(公告)日：2011-09-01

申请号：PCT/US2011/025552

申请日：2011-02-18

Applicant: QUALCOMM Incorporated ,  MCCLOUD, Michael, L. ,  BREHLER, Matthias ,  PARK, Ju Won ,  PARK, Jong Hyeon ,  KIM, Je Woo ,  KANG, Inyup ,  BANISTER, Brian, C.

Inventor： MCCLOUD, Michael, L. ,  BREHLER, Matthias ,  PARK, Ju Won ,  PARK, Jong Hyeon ,  KIM, Je Woo ,  KANG, Inyup ,  BANISTER, Brian, C.

IPC: H04L25/03

Abstract: 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.

Abstract translation: 在此描述了针对用于多信道无线通信的接收到的无线数据流进行解映射时降低的复杂度或改进的准确度。 举例来说，可以采用低复杂度似然算法来从无线数据流中解映射数据比特。 在一个特定示例中，似然算法可以用接收到的与该位相关的无线符号的子集来近似接收的位，从而降低算法复杂度。 在其他示例中，可以为该子集采用有限组的接收无线符号，从而进一步降低算法复杂度。 根据至少一个其他示例，算法的对数项可以用诸如查找表，序列扩展，多项式近似等的非对数函数近似。 这些近似值可以增强符号解映射的准确性，同时保持或改善无线接收器的处理开销。

公开(公告)号：WO2011053887A1

公开(公告)日：2011-05-05

申请号：PCT/US2010/054888

申请日：2010-10-30

Applicant: QUALCOMM INCORPORATED ,  NARASIMHA, Madihally J. ,  KIM, Je Woo ,  KASTURI, Nitin ,  SUBRAHMANYA, Parvathanathan

Inventor： NARASIMHA, Madihally J. ,  KIM, Je Woo ,  KASTURI, Nitin ,  SUBRAHMANYA, Parvathanathan

IPC: H04B1/52 ,  H04B1/38 ,  H04B1/40

CPC classification number: H04B1/525 ,  H04B1/3805 ,  H04B1/406

Abstract: Certain embodiments of the present disclosure support techniques for interference cancellation in a multi-mode wireless modem that supports coexistence of different radio technologies.

Abstract translation: 本公开的某些实施例支持用于支持不同无线电技术的共存的多模式无线调制解调器中的干扰消除技术。

公开(公告)号：EP2258054A1

公开(公告)日：2010-12-08

申请号：EP08780861.4

申请日：2008-06-19

Applicant: QUALCOMM Incorporated

Inventor： PARK, Jong Hyeon ,  SIM, Bok Tae ,  KIM, Je Woo

IPC: H04B7/08 ,  H04L1/08 ,  H04L1/18

CPC classification number: H04B7/0871 ,  H04B7/0857 ,  H04L1/06 ,  H04L1/08

Abstract: 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.

公开(公告)号：EP2235901A1

公开(公告)日：2010-10-06

申请号：EP08771223.8

申请日：2008-06-16

Applicant: QUALCOMM Incorporated

Inventor： PARK, Jong Hyeon ,  CHANG, Tae Ryun ,  KIM, Je Woo

IPC: H04L27/26

CPC classification number: H04L27/2647 ,  H04L5/0046 ,  H04L25/022 ,  H04L2025/03414

Abstract: 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.

公开(公告)号：WO2014074249A1

公开(公告)日：2014-05-15

申请号：PCT/US2013/063216

申请日：2013-10-03

Applicant: QUALCOMM INCORPORATED

Inventor： CHIZGI, Nate ,  SRIPATHI, Prashant Udupa ,  SALVEKAR, Atul Arvind ,  MATIN, Sharif Ahsanul ,  ZHANG, Wei ,  KIM, Je Woo ,  MAIYA, Shashank V.

IPC: H04B7/08 ,  H04L1/00 ,  H04W52/02

CPC classification number: H04W52/0229 ,  H04B7/0808 ,  H04B7/0874 ,  H04L1/0001 ,  H04L1/0039 ,  H04W52/0274 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/444

Abstract: One or more aspects of the present disclosure aim to enable a reduced call drop rate and/or improved call performance in calls using 3GPP Release 99 Dedicated Physical Channel (DPCH) signaling, while reducing, or at least not causing a substantially large rise in power consumption at a wireless device, by utilizing selection diversity at a receiver. According to an aspect of the disclosure, a UE invokes a measurement period for detecting a downlink dedicated control channel (DCCH) based on a condition of a radio channel, during an initial portion of a transmission time interval (TTI). The UE samples one or more characteristics of a radio channel utilizing one or more of a plurality of receive chains. If the DCCH is detected during the measurement period, the UE selects one or more receive chains from among the plurality of receive chains in accordance with the one or more sampled characteristics. The UE receives a downlink transmission utilizing the selected one or more receive chains.

Abstract translation: 本公开的一个或多个方面旨在在使用3GPP Release 99专用物理信道（DPCH）信令的呼叫中实现减少的呼叫丢弃率和/或改善的呼叫性能，同时减少或至少不导致电力的大幅上升 通过利用接收机的选择分集，在无线设备处的消费。 根据本公开的一个方面，在传输时间间隔（TTI）的初始部分期间，UE基于无线电信道的条件来调用用于检测下行链路专用控制信道（DCCH）的测量周期。 UE采用多个接收链中的一个或多个来采样无线电信道的一个或多个特性。 如果在测量周期期间检测到DCCH，则UE根据一个或多个采样特性从多个接收链中选择一个或多个接收链。 UE使用所选择的一个或多个接收链接收下行链路传输。

公开(公告)号：WO2013106599A1

公开(公告)日：2013-07-18

申请号：PCT/US2013/021068

申请日：2013-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： NARASIMHA, Madihally J. ,  RAMASAMY, Dineshkumar Karuppanna Gounder ,  KIM, Je Woo

IPC: H04L25/03

CPC classification number: H04L25/03044 ,  H04L2025/03414

Abstract: The described aspects include a user equipment (UE) apparatus and corresponding method of equalizing samples of received signals in wireless communication. A plurality of samples of a signal received in wireless communication can be obtained, and on-time samples and late samples of the plurality of samples are independently equalized to respectively generate equalized on-time samples and equalized late samples. In addition, a preference factor can be applied to at least the equalized on-time samples to generate preferred equalized on-time samples, which are combined with the equalized late samples to generate a set of equalized samples for decoding.

Abstract translation: 所描述的方面包括用户设备（UE）装置和在无线通信中均衡接收信号的采样的相应方法。 可以获得在无线通信中接收的信号的多个样本，并且多个样本的接通时间采样和后期采样被独立地相等，以分别产生均衡的接通时间采样和均衡的深采样。 此外，优选因子可以应用于至少均衡的接通时间样本以产生优选的均衡接通时间样本，其与均衡的深度样本组合以生成用于解码的一组均衡样本。

公开(公告)号：WO2010080995A1

公开(公告)日：2010-07-15

申请号：PCT/US2010/020494

申请日：2010-01-08

Applicant: QUALCOMM Incorporated ,  LI, Junqiang ,  BREHLER, Matthias ,  KIM, Je Woo

Inventor： LI, Junqiang ,  BREHLER, Matthias ,  KIM, Je Woo

IPC: H04L27/26

CPC classification number: H04L27/2662 ,  H04L27/2665

Abstract: Techniques proposed in the present disclosure may used to update an FFT window position and perform linear phase compensation for OFDM wireless systems with up to two antennas at the receiver. Techniques presented herein may help resolve a problem of determining an optimum FFT window position under the condition that the length of channel impulse response is larger than the length of cyclic prefix.

Abstract translation: 在本公开中提出的技术可以用于更新FFT窗口位置并且在接收机处对具有多达两个天线的OFDM无线系统执行线性相位补偿。 本文提出的技术可以帮助解决在信道脉冲响应的长度大于循环前缀的长度的条件下确定最佳FFT窗口位置的问题。

公开(公告)号：WO2010078062A1

公开(公告)日：2010-07-08

申请号：PCT/US2009/068607

申请日：2009-12-17

Applicant: QUALCOMM INCORPORATED ,  KIM, Youngjae ,  KIM, Je Woo ,  PARK, Jong Hyeon ,  NARASIMHA, Madihally J.

Inventor： KIM, Youngjae ,  KIM, Je Woo ,  PARK, Jong Hyeon ,  NARASIMHA, Madihally J.

IPC: H04B7/02

CPC classification number: H04B7/024

Abstract: Certain embodiments of the present disclosure relate to methods for mitigating interference of signals transmitted to a mobile station (MS) from a plurality of neighboring base stations. By applying a proposed spatio-frequency modulation (SFM) technique at a serving base station (BS) and at each interfering BS, a co-channel interference (CCI) from interfering base stations can be efficiently mitigated at the MS and signal transmitted from the serving BS can be more accurately decoded.

Abstract translation: 本公开的某些实施例涉及用于减轻从多个相邻基站发送到移动站（MS）的信号的干扰的方法。 通过在服务基站（BS）和每个干扰BS处应用提出的空间 - 频率调制（SFM）技术，可以在MS处有效地减轻来自干扰基站的同信道干扰（CCI），并从 服务BS可以更准确地解码。

公开(公告)号：WO2010045032A1

公开(公告)日：2010-04-22

申请号：PCT/US2009/059146

申请日：2009-09-30

Applicant: QUALCOMM INCORPORATED ,  PARK, Ju Won ,  BANISTER, Brian Clarke ,  KIM, Je Woo ,  PARK, Jong Hyeon ,  BREHLER, Matthias ,  GURSKI, Remi J. ,  CHANG, Tae Ryun

Inventor： PARK, Ju Won ,  BANISTER, Brian Clarke ,  KIM, Je Woo ,  PARK, Jong Hyeon ,  BREHLER, Matthias ,  GURSKI, Remi J. ,  CHANG, Tae Ryun

IPC: H03M13/41

CPC classification number: H03M13/413 ,  H03M13/3723 ,  H03M13/3955 ,  H03M13/3972 ,  H03M13/6544

Abstract: A method and apparatus for decoding of tailbiting convolutional codes (TBCC) are disclosed. The proposed modified maximum-likelihood TBCC decoding technique preserves error correction performance of optimal maximum-likelihood based TBCC decoding, while the computational complexity is substantially decreased since a reduced number of decoding states has been evaluated. Compare to other sub-optimal TBCC decoding algorithms, modified maximum-likelihood TBCC decoding achieves improved packet error rate performance with similar computational complexity.

Abstract translation: 公开了一种用于解码尾部卷积码（TBCC）的方法和装置。 所提出的修改的最大似然TBCC解码技术保留了最佳最大似然度TBCC解码的纠错性能，同时由于已经减少了解码状态数量，所以计算复杂度显着降低。 与其他次优TBCC解码算法相比，修改的最大似然TBCC解码实现了具有类似计算复杂度的改进的分组错误率性能。

公开(公告)号：WO2010033524A1

公开(公告)日：2010-03-25

申请号：PCT/US2009/057057

申请日：2009-09-15

Applicant: QUALCOMM INCORPORATED ,  PARK, Jong Hyeon ,  KIM, Youngjae ,  KIM, Je Woo

Inventor： PARK, Jong Hyeon ,  KIM, Youngjae ,  KIM, Je Woo

IPC: H04L25/03 ,  H04L25/06

CPC classification number: H04L25/03254 ,  H04L1/0054 ,  H04L1/0055 ,  H04L25/03171 ,  H04L25/03286 ,  H04L25/067 ,  H04L2025/03726

Abstract: Certain embodiments of the present disclosure allow a receiver to utilize both a minimum mean square error (MMSE) detection algorithm and a maximum likelihood (ML) detection algorithm. The receiver may control, based on various conditions, a mode selection signal to select between output generated with the MMSE detection algorithm and the ML detection algorithm. By sharing logical components, certain embodiments may allow a receiver to implement both ML and MMSE detection algorithms with minimal computational overhead when compared to implementing a single one of the decoding algorithms.

Abstract translation: 本公开的某些实施例允许接收机同时使用最小均方误差（MMSE）检测算法和最大似然（ML）检测算法。 接收机可以根据各种条件控制模式选择信号，以在MMSE检测算法产生的输出和ML检测算法之间进行选择。 通过共享逻辑组件，当与实现单个解码算法相比时，某些实施例可以允许接收机以最小的计算开销来实现ML和MMSE检测算法。