公开(公告)号：US08576965B2

公开(公告)日：2013-11-05

申请号：US12831462

申请日：2010-07-07

申请人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

发明人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

IPC分类号： H04B1/10

CPC分类号： H04B1/525 ,  G01S19/21 ,  H04B1/3805 ,  H04B1/406

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

摘要翻译： 本公开的某些实施例支持支持不同无线电技术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：US20110103431A1

公开(公告)日：2011-05-05

申请号：US12831462

申请日：2010-07-07

申请人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

发明人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

IPC分类号： H04B1/10 ,  H04B1/707

CPC分类号： H04B1/525 ,  G01S19/21 ,  H04B1/3805 ,  H04B1/406

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

摘要翻译： 本公开的某些实施例支持支持不同无线电技术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：US20110105037A1

公开(公告)日：2011-05-05

申请号：US12831474

申请日：2010-07-07

申请人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

发明人： Madihally J. Narasimha ,  Je Woo Kim ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

IPC分类号： H04B15/00

CPC分类号： H04B1/525 ,  H04B1/3805 ,  H04B1/406

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

公开(公告)号：US08055199B2

公开(公告)日：2011-11-08

申请号：US12417595

申请日：2009-04-02

申请人： Youngjae Kim ,  Je Woo Kim ,  Jong Hyeon Park ,  Madihally J. Narasimha

发明人： Youngjae Kim ,  Je Woo Kim ,  Jong Hyeon Park ,  Madihally J. Narasimha

IPC分类号： H04B1/00

CPC分类号： H04B7/024

摘要： 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.

摘要翻译： 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：US20100220819A1

公开(公告)日：2010-09-02

申请号：US12395675

申请日：2009-03-01

申请人： Junqiang Li ,  Madihally J. Narasimha ,  Je Woo Kim

发明人： Junqiang Li ,  Madihally J. Narasimha ,  Je Woo Kim

IPC分类号： H04L27/06

CPC分类号： H04L27/2675 ,  H04L27/266

摘要： Certain embodiments of the present disclosure relate to a method for tracking of a carrier frequency offset. A soft combined frequency tracking discriminator is proposed as a part of the closed loop structure that can provide fast tracking of the frequency offset in an initial pull-in mode, and can also track small residual frequency variance in a fine-tracking mode.

摘要翻译： 本公开的某些实施例涉及用于跟踪载波频率偏移的方法。 提出了一种软组合频率跟踪鉴别器作为闭环结构的一部分，其可以提供初始引入模式中的频率偏移的快速跟踪，并且还可以在精细跟踪模式中跟踪小的残余频率方差。

公开(公告)号：US20130177065A1

公开(公告)日：2013-07-11

申请号：US13458514

申请日：2012-04-27

申请人： Madihally J. Narasimha ,  Dineshkumar Karuppanna Gounder Ramasamy ,  Je Woo Kim

发明人： Madihally J. Narasimha ,  Dineshkumar Karuppanna Gounder Ramasamy ,  Je Woo Kim

IPC分类号： H04L27/01

CPC分类号： H04L25/03044 ,  H04L2025/03414

摘要： 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.

摘要翻译： 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：US08270545B2

公开(公告)日：2012-09-18

申请号：US12395675

申请日：2009-03-01

申请人： Junqiang Li ,  Madihally J. Narasimha ,  Je Woo Kim

发明人： Junqiang Li ,  Madihally J. Narasimha ,  Je Woo Kim

IPC分类号： H04L27/06

CPC分类号： H04L27/2675 ,  H04L27/266

摘要： Certain embodiments of the present disclosure relate to a method for tracking of a carrier frequency offset. A soft combined frequency tracking discriminator is proposed as a part of the closed loop structure that can provide fast tracking of the frequency offset in an initial pull-in mode, and can also track small residual frequency variance in a fine-tracking mode.

摘要翻译： 本公开的某些实施例涉及用于跟踪载波频率偏移的方法。 提出了一种软组合频率跟踪鉴别器作为闭环结构的一部分，其可以提供初始引入模式中的频率偏移的快速跟踪，并且还可以在精细跟踪模式中跟踪小的残余频率方差。

公开(公告)号：US08259864B2

公开(公告)日：2012-09-04

申请号：US12367499

申请日：2009-02-06

申请人： Sungjun Hwang ,  Madihally J. Narasimha ,  Je Woo Kim

发明人： Sungjun Hwang ,  Madihally J. Narasimha ,  Je Woo Kim

IPC分类号： H04L27/06

CPC分类号： H04L25/0202 ,  H04L27/2647

摘要： Certain embodiments of the present disclosure relate to a Fourier-Quadratic (FQ) method for channel estimation that may help improve error rate performance of existing techniques, with only moderate increase in computational complexity. The proposed FQ scheme according to certain embodiments may provide a viable solution to the difficult channel estimation problem encountered in the Vehicular B channel with a long delay spread. Furthermore, a robustness of the proposed FQ channel estimation scheme to accommodate errors in a channel delay profile and to errors in a channel power profile is demonstrated through simulations.

摘要翻译： 本公开的某些实施例涉及用于信道估计的傅里叶二次（FQ）方法，其可以有助于改善现有技术的误码率性能，同时仅计算复杂度的适度增加。 根据某些实施例的所提出的FQ​​方案可以为具有长延迟扩展的车载B信道中遇到的困难信道估计问题提供可行的解决方案。 此外，通过模拟证明了所提出的FQ​​信道估计方案的鲁棒性，以适应信道延迟分布中的误差和信道功率分布中的误差。

公开(公告)号：US08355473B2

公开(公告)日：2013-01-15

申请号：US12426257

申请日：2009-04-19

申请人： Junqiang Li ,  Je Woo Kim ,  Madihally J. Narasimha

发明人： Junqiang Li ,  Je Woo Kim ,  Madihally J. Narasimha

IPC分类号： H03D1/04

CPC分类号： H04L27/2695 ,  H04B17/309 ,  H04L27/266

摘要： Certain embodiments of the present disclosure propose methods and systems for classifying the Doppler spread based on the output of the frequency-tracking loop (FTL) discriminator in WiMAX systems to improve the performance of the channel estimation. The Doppler spread may be classified as low, medium or high based on the statistics of the output of the discriminator in the fine-tracking mode.

摘要翻译： 本公开的某些实施例提出了基于WiMAX系统中的频率跟踪环（FTL）鉴别器的输出来分类多普勒扩展的方法和系统，以改善信道估计的性能。 基于精细跟踪模式中的鉴别器的输出的统计，多普勒扩展可以被分类为低，中等或高。

公开(公告)号：US08264946B2

公开(公告)日：2012-09-11

申请号：US12425486

申请日：2009-04-17

申请人： Madihally J. Narasimha ,  Je Woo Kim ,  Yuanning Yu ,  Jong Hyeon Park

发明人： Madihally J. Narasimha ,  Je Woo Kim ,  Yuanning Yu ,  Jong Hyeon Park

IPC分类号： H04J11/00

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在单载波频分多址（SC-FDMA）系统中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/或频域中对SC-FDMA传输信号的操纵。