公开(公告)号：US08374274B2

公开(公告)日：2013-02-12

申请号：US12351820

申请日：2009-01-10

申请人： Jong Hyeon Park ,  Matthias Brehler ,  Brian Clarke Banister ,  Albert van Zelst ,  Tae Ryun Chang ,  Vincent K. Jones ,  Je Woo Kim

发明人： Jong Hyeon Park ,  Matthias Brehler ,  Brian Clarke Banister ,  Albert van Zelst ,  Tae Ryun Chang ,  Vincent K. Jones ,  Je Woo Kim

IPC分类号： H04B7/02 ,  H04L1/02

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 l2 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 l2 norms, while the computational complexity is significantly smaller.

摘要翻译： 本公开的某些实施例提供了作为最大似然（ML）检测的一部分近似计算l2范数的技术：tri-maxmin，maxsum和sortsum算法。 所提出的近似方案显示出比传统的近似方案更好的精度 - abssum和maxmin算法，而计算复杂度非常相似。 利用提出的范数近似技术的ML检测的误码率性能与精确计算l2范数的参考ML检测非常接近，而计算复杂度显着更小。

公开(公告)号：US20120307749A1

公开(公告)日：2012-12-06

申请号：US13314686

申请日：2011-12-08

申请人： Brian Clarke Banister ,  Jibing Wang ,  Ahmed K. Sadek ,  Tamer Adel Kadous ,  Pranav Dayal ,  Ashok Mantravadi

发明人： Brian Clarke Banister ,  Jibing Wang ,  Ahmed K. Sadek ,  Tamer Adel Kadous ,  Pranav Dayal ,  Ashok Mantravadi

IPC分类号： H04W88/06

CPC分类号： H04B1/0475 ,  H04W16/14 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/25 ,  Y02D70/40

摘要： In a multi-radio device, a configurable filter may be placed on the transmit side of an aggressor radio to reduce interference to receive side performance of a victim radio. The filter may be adaptively configured based on performance of the victim radio. The configurable filter may be in the form of a notch filter. The depth and width of the notch filter may be configured. The filter may be used to create a virtual guard band between an Industrial Scientific and Medical (ISM) band and a cellular band by puncturing a physical uplink control channel (PUCCH) transmission nearest to the ISM band or reducing power on the nearest PUCCH transmission.

摘要翻译： 在多无线电设备中，可配置的过滤器可以放置在侵略者无线电的发射侧，以减少干扰以接收受害者无线电的侧面性能。 可以基于受害者无线电的性能来自适应地配置该滤波器。 可配置的滤波器可以是陷波滤波器的形式。 陷波滤波器的深度和宽度可以被配置。 滤波器可以用于通过对最接近ISM频带的物理上行链路控制信道（PUCCH）传输进行删截或者在最近的PUCCH传输上减少功率来在工业科学和医疗（ISM）频带和蜂窝频带之间创建虚拟保护频带。

公开(公告)号：US20120045024A1

公开(公告)日：2012-02-23

申请号：US13033545

申请日：2011-02-23

申请人： Tao Cui ,  Jia Tang ,  Andrew Sendonaris ,  Atul A. Salvekar ,  Subramanya P.N. Rao ,  Parvathanathan Subrahmanya ,  Lei Xiao ,  Michael L. McCloud ,  Brian Clarke Banister

发明人： Tao Cui ,  Jia Tang ,  Andrew Sendonaris ,  Atul A. Salvekar ,  Subramanya P.N. Rao ,  Parvathanathan Subrahmanya ,  Lei Xiao ,  Michael L. McCloud ,  Brian Clarke Banister

IPC分类号： H04L27/06

CPC分类号： H04L1/005 ,  H04L1/06 ,  H04L25/03242 ,  H04L25/067

摘要： Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to facilitate determination of log likelihood ratios (LLRs) in receivers using iterative decoders is further described. A Gaussian or non-Gaussian approximation method using a priori information may be used to determine a K-best list of values for summation to generate an LLR is also described.

摘要翻译： 描述了用于在通信系统中接收，处理和解码MIMO传输的方法和装置。 描述了用于简化使用求和的处理复杂度的非高斯近似方法。 进一步描述使用先验信息以便于使用迭代解码器确定接收机中的对数似然比（LLR）。 也可以使用使用先验信息的高斯或非高斯近似方法来确定用于求和以产生LLR的K个最佳值列表。

公开(公告)号：US20110205954A1

公开(公告)日：2011-08-25

申请号：US12848969

申请日：2010-08-02

申请人： Alexei Yurievitch Gorokhov ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad ,  Brian Clarke Banister

发明人： Alexei Yurievitch Gorokhov ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad ,  Brian Clarke Banister

IPC分类号： H04W72/04 ,  H04B7/14

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/0058

摘要： Systems and methodologies are described that facilitate sending and/or receiving user equipment specific reference signals (UE-RSs) in a wireless communication environment. A UE-RS pattern can be selected, yielded, etc. based upon a number of symbols from a subframe utilized for downlink transmission. At least one time domain component of the UE-RS pattern can vary based upon the number of symbols from the subframe utilized for the downlink transmission. For instance, the at least one time domain component can be punctured, time-shifted, and so forth. Further, UE-RSs can be mapped to resource elements of the subframe as a function of the UE-RS pattern. Moreover, a UE can utilize the UE-RS pattern to detect UE-RSs on the resource elements of the subframe. Further, the UE can estimate a channel based upon the UE-RSs.

摘要翻译： 描述了有助于在无线通信环境中发送和/或接收用户设备特定参考信号（UE-RS）的系统和方法。 可以基于用于下行链路传输的子帧的多个符号来选择，产生UE-RS模式。 UE-RS模式的至少一个时域分量可以基于用于下行链路传输的子帧的符号数量而变化。 例如，至少一个时域分量可以被打孔，时移等等。 此外，UE-RS可以被映射到作为UE-RS模式的函数的子帧的资源元素。 此外，UE可以利用UE-RS模式来检测子帧的资源元素上的UE-RS。 此外，UE可以基于UE-RS估计信道。

公开(公告)号：US09049661B2

公开(公告)日：2015-06-02

申请号：US13613826

申请日：2012-09-13

申请人： Thomas Klingenbrunn ,  Brian Clarke Banister ,  Navid Ehsan ,  Levent Aydin

发明人： Thomas Klingenbrunn ,  Brian Clarke Banister ,  Navid Ehsan ,  Levent Aydin

IPC分类号： G08C17/00 ,  H04W52/02

CPC分类号： H04W52/0229 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

摘要： Certain aspects of the present disclosure may help reduce power consumption by allowing a UE to remain in a low power state by not attempting to decode ACK/NACK transmissions after receiving a positive acknowledgement (ACK).

摘要翻译： 本公开的某些方面可以通过在接收到肯定确认（ACK）之后不试图解码ACK / NACK传输来允许UE保持在低功率状态来帮助减少功率消耗。

公开(公告)号：US08619840B2

公开(公告)日：2013-12-31

申请号：US13033902

申请日：2011-02-24

申请人： Zhu Ji ,  Brian Clarke Banister ,  Inyup Kang

发明人： Zhu Ji ,  Brian Clarke Banister ,  Inyup Kang

IPC分类号： H04B1/38

CPC分类号： H03H17/0294 ,  H03H17/0642

摘要： Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at least one performance requirement of the transceiver. In particular, the methods and apparatus perform sampling of an input signal at a first sampling rate to gain one or more input signal samples. The input signal samples are then filtered using parallel or polyphase filtering operating at a second sampling rate lower than the first sampling rate. The filtered samples are then interpolated at the second sampling rate to achieve resampling of the input signal. Polyphase filtering affords an effectively high input sampling rate for good spectrum image rejection, while allowing the second sampling rate to be effectively much lower than the first rate, thereby reducing the complexity of multiplier operations for interpolation.

摘要翻译： 公开了无线收发器中采样率转换的方法和装置。 方法和装置通过基于收发器的至少一个性能要求自适应地设置信号的采样速率来实现对采样率的敏捷设置或重新采样。 特别地，方法和装置以第一采样率对输入信号进行采样，以获得一个或多个输入信号采样。 然后使用以低于第一采样速率的第二采样率运行的并行或多相滤波来过滤输入信号采样。 然后以第二采样率对经滤波的采样进行内插，以实现输入信号的重新采样。 多相滤波提供了有效的高输入采样率以获得良好的频谱图像抑制，同时允许第二采样率实际上远低于第一速率，从而降低了用于插值的乘法器操作的复杂度。

公开(公告)号：US20110150152A1

公开(公告)日：2011-06-23

申请号：US12971839

申请日：2010-12-17

申请人： Raghu Narayan Challa ,  Brian Clarke Banister ,  Levent Aydin ,  Yuheng Huang

发明人： Raghu Narayan Challa ,  Brian Clarke Banister ,  Levent Aydin ,  Yuheng Huang

IPC分类号： H04L27/08

CPC分类号： H03G3/3078

摘要： A method for Automatic Gain Control (AGC) in a receiver is performed by a circuit having an inner loop and an outer loop. The method includes performing an outer loop energy detection, mitigating interference using the outer loop energy detection, and performing a frequency domain energy measurement in the inner loop. The method also includes adjusting a digital gain component in the inner loop and an analog gain component in the outer loop in response to the frequency domain energy measurement.

摘要翻译： 接收机中的自动增益控制（AGC）的方法由具有内环和外环的电路执行。 该方法包括执行外环能量检测，使用外环能量检测来减轻干扰，以及在内循环中执行频域能量测量。 该方法还包括响应于频域能量测量调整内环中的数字增益分量和外环中的模拟增益分量。

公开(公告)号：US20100091912A1

公开(公告)日：2010-04-15

申请号：US12351820

申请日：2009-01-10

申请人： Jong Hyeon Park ,  Matthias Brehler ,  Brian Clarke Banister ,  Albert van Zelst ,  Tae Ryun Chang ,  Vincent K. Jones ,  Je Woo Kim

发明人： Jong Hyeon Park ,  Matthias Brehler ,  Brian Clarke Banister ,  Albert van Zelst ,  Tae Ryun Chang ,  Vincent K. Jones ,  Je Woo Kim

IPC分类号： H04L27/06

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 l2 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 l2 norms, while the computational complexity is significantly smaller.

摘要翻译： 本公开的某些实施例提供了作为最大似然（ML）检测的一部分近似计算l2范数的技术：tri-maxmin，maxsum和sortsum算法。 所提出的近似方案显示出比传统的近似方案更好的精度 - abssum和maxmin算法，而计算复杂度非常相似。 利用提出的范数近似技术的ML检测的误码率性能与精确计算l2范数的参考ML检测非常接近，而计算复杂度显着更小。

公开(公告)号：US07630427B2

公开(公告)日：2009-12-08

申请号：US11361887

申请日：2006-02-24

申请人： Brian Clarke Banister ,  Jing Liu ,  Kuang-Hsuan Tu

发明人： Brian Clarke Banister ,  Jing Liu ,  Kuang-Hsuan Tu

IPC分类号： H04B1/707

CPC分类号： H04B1/7117

摘要： Embodiments include a method of signal processing in which each of a set of individual estimates of a transmitted symbol is added to a combined symbol estimate based on a relation between a signal quality value corresponding to the individual estimate and a threshold value, where the threshold value is based on a maximum among the signal quality values.

摘要翻译： 实施例包括一种信号处理方法，其中基于与各个估计相对应的信号质量值与阈值之间的关系将发送符号的一组单独估计中的每一个相加到组合符号估计中，其中阈值 是基于信号质量值中的最大值。

公开(公告)号：US20080130714A1

公开(公告)日：2008-06-05

申请号：US12020417

申请日：2008-01-25

申请人： Thomas B. Wilborn ,  Brian Clarke Banister

发明人： Thomas B. Wilborn ,  Brian Clarke Banister

IPC分类号： H04B1/707 ,  H04L27/06

CPC分类号： H04B1/71075 ,  H04B1/712 ,  H04B2001/70935

摘要： Interference in a wireless communication is minimized, or at least reduced, by scaling the symbols received from an interfering transmitter. Input samples from the interfering transmitter are isolated and decovered to generate received symbols. The gains of the received symbols are scaled to reduce the interference and the scaled symbols are covered to produce output samples that are spread to generate interference cancelled samples with reduced interference from the interfering transmitter. The function applied to scale the symbols may be linear or nonlinear.

摘要翻译： 无线通信中的干扰通过缩放从干扰发射机接收到的符号被最小化或至少减少。 来自干扰发射机的输入采样被隔离并解除，以产生接收到的符号。 接收到的符号的增益被缩放以减少干扰并且缩放的符号被覆盖以产生被扩展以产生具有来自干扰发射机的干扰减小的干扰消除样本的输出样本。 用于缩放符号的函数可以是线性的或非线性的。