公开(公告)号：US07321646B2

公开(公告)日：2008-01-22

申请号：US10716085

申请日：2003-11-18

Applicant: Huseyin Arslan ,  Abdulrauf Hafeez ,  Rajaram Ramesh ,  Dennis Hui

Inventor： Huseyin Arslan ,  Abdulrauf Hafeez ,  Rajaram Ramesh ,  Dennis Hui

IPC: H04B1/10

CPC classification number: H04L25/03133 ,  H04L2025/03605

Abstract: To receive a signal from a multiple-input-multiple-output (MIMO) communication channel, initial channel taps are generated based on an impulse response estimate of the MIMO communication channel. The received signal is pre-filtered using the initial channel taps to generate output channel taps and a corresponding output signal having an increased signal-to-noise ratio (SNR) and uncorrelated noise. The SNR is based on a ratio of the energy in a first subset of the output channel taps to the energy in a second subset of the output channel taps.

Abstract translation: 为了从多输入多输出（MIMO）通信信道接收信号，基于MIMO通信信道的脉冲响应估计来生成初始信道抽头。 使用初始信道抽头对接收到的信号进行预滤波以产生输出信道抽头和具有增加的信噪比（SNR）和不相关噪声的相应输出信号。 SNR基于输出信道抽头的第一子集中的能量与输出信道抽头的第二子集中的能量的比率。

公开(公告)号：US09444672B2

公开(公告)日：2016-09-13

申请号：US13512973

申请日：2009-12-21

Applicant: Dennis Hui ,  Miguel Lopez

Inventor： Dennis Hui ,  Miguel Lopez

IPC: H04K1/02 ,  H04L12/56 ,  H04L27/36 ,  H04L1/00 ,  H04L27/34

CPC classification number: H04L27/36 ,  H04L1/0041 ,  H04L27/3405

Abstract: A modulator includes a symbol mapper that is configured to map respective bits sets of a bit sequence corresponding to a burst and including data, training, tail, and guard bits into respective symbols to form a symbol sequence of data, training, tail, and guard symbols. A vector precoder is configured to apply a vector precoding transformation to the data and training symbols to form precoded symbols. These precoded symbols are combined with the tail and guard symbols in a symbol processor to form a sequence of transmit symbols. The record precoding conducted by the modulator of a transmitter enables improved link performance without the cost of increased processing complexity of the receiver algorithm.

Abstract translation: 调制器包括符号映射器，其被配置为将与突发相对应的比特序列的各个比特组映射到包括数据，训练，尾部和保护比特到相应符号中以形成数据，训练，尾部和后卫的符号序列 符号。 向量预编码器被配置为向数据和训练符号应用向量预编码变换以形成预编码符号。 这些预编码符号与符号处理器中的尾部和保护符号组合以形成发送符号序列。 由发射机的调制器执行的记录预编码器能够改善链路性能，而不会增加接收机算法的处理复杂度。

公开(公告)号：US08934930B2

公开(公告)日：2015-01-13

申请号：US13283003

申请日：2011-10-27

Applicant: Jiann-Ching Guey ,  Dennis Hui

Inventor： Jiann-Ching Guey ,  Dennis Hui

IPC: H04B7/00 ,  H04W24/02 ,  H04W24/04 ,  H04W92/24 ,  H04L12/911 ,  H04W92/20

CPC classification number: H04W24/02 ,  H04L47/822 ,  H04W24/04 ,  H04W92/20 ,  H04W92/24

Abstract: A distributed parameter update procedure is provided for updating parameters that do not have discrete values. When a parameter value is changed, a search is conducted of a parameter space to find a new parameter value minimizes some cost function. The cost function is derived based on the current parameter settings in neighboring nodes. The distributed parameter update procedure may simplify the search process by localizing the search of the parameter space for a new parameter value to the vicinity of the current parameter setting. In some embodiments, the search is conducted along a line of steepest descent emanating from the current parameter setting.

Abstract translation: 提供了分布式参数更新过程，用于更新不具有离散值的参数。 当一个参数值被改变时，进行一个参数空间的搜索以找到一个新的参数值，最小化一些成本函数。 成本函数是根据相邻节点中的当前参数设置得出的。 分布式参数更新过程可以通过将新参数值的参数空间的搜索定位到当前参数设置的附近来简化搜索过程。 在一些实施例中，沿着从当前参数设置发出的最速下降线进行搜索。

公开(公告)号：US08923110B2

公开(公告)日：2014-12-30

申请号：US12555973

申请日：2009-09-09

Applicant: Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

Inventor： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC: H04J11/00 ,  H04B7/02 ,  H04B17/00 ,  H04L1/20 ,  H04L25/02 ,  H04L1/00 ,  H04B7/06

CPC classification number: H04B17/0047 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/364 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224

Abstract: Accurate downlink channel estimates are calculated based on infrequently transmitted Channel State Information (CSI) feedback data from a UE 20. A plurality of non-uniformly spaced digital CSI feedback samples, representing the frequency response of a downlink communication channel, is received from the UE. The received CSI feedback samples are demodulated and inverse quantized. A time domain tap delay channel model is generated from the inverse quantized CSI feedback samples. The time domain tap delay channel model may be frequency-transformed to obtain a reconstructed frequency response of the downlink communication channel in the frequency domain. Alternatively, channel delays may be estimated based on prior delays and/or known references signals transmitted on the uplink. Channel estimates between CSI reporting instances may be predicted, such as by a sample & hold or a linear predictor. The delays may be presumed fixed, and Kalman filter coefficients evolved over time.

Abstract translation: 基于来自UE20的不频繁发送的信道状态信息（CSI）反馈数据来计算准确的下行链路信道估计。从UE接收表示下行链路通信信道的频率响应的多个非均匀间隔的数字CSI反馈样本 。 接收的CSI反馈样本被解调和反量化。 时域抽头延迟信道模型是从逆向量化的CSI反馈样本生成的。 时域抽头延迟信道模型可以被频率变换以获得频域中下行链路通信信道的重构频率响应。 或者，可以基于在上行链路上发送的先前的延迟和/或已知的参考信号来估计信道延迟。 可以预测CSI报告实例之间的信道估计，例如通过采样和保持或线性预测器。 可以推测延迟是固定的，并且卡尔曼滤波器系数随时间演化。

公开(公告)号：US08849207B2

公开(公告)日：2014-09-30

申请号：US13237325

申请日：2011-09-20

Applicant: Jiann-Ching Guey ,  Dennis Hui

Inventor： Jiann-Ching Guey ,  Dennis Hui

IPC: H04B15/00 ,  H04W24/02 ,  H04W92/20 ,  H04W72/04

CPC classification number: H04W24/02 ,  H04W72/0406 ,  H04W92/20

Abstract: A system comprises a communication device that chooses a parameter setting from a set of available parameter settings. The system may include multiple communication devices, and each available parameter setting may have an associated cost. The communication device may receive parameter setting information from one or more other communication devices in the system, and the parameter setting information may identify the parameter setting being used by the one or more communication devices in the system. The communication device may choose a parameter setting that is associated with the lowest cost based on the parameter setting information received from the one or more other communication devices in the system.

Abstract translation: 系统包括从一组可用参数设置中选择参数设置的通信设备。 系统可以包括多个通信设备，并且每个可用的参数设置可以具有相关联的成本。 通信设备可以从系统中的一个或多个其他通信设备接收参数设置信息，并且参数设置信息可以标识系统中一个或多个通信设备使用的参数设置。 通信设备可以基于从系统中的一个或多个其他通信设备接收的参数设置信息来选择与最低成本相关联的参数设置。

公开(公告)号：US08798215B2

公开(公告)日：2014-08-05

申请号：US13306232

申请日：2011-11-29

Applicant: Ali S. Khayrallah ,  Dennis Hui

Inventor： Ali S. Khayrallah ,  Dennis Hui

IPC: H04B7/10

CPC classification number: H04L25/03229 ,  H04L25/03012 ,  H04L25/0328 ,  H04L25/03305 ,  H04L27/3416 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

Abstract: Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric is introduced for use in search of best candidate symbol estimates. The metric may be evaluated based on a probability distribution function of the residual signals or a probability mass function of the unresolved signals. The metric may also be approximated by the sum of a conventional Euclidean metric and a correction metric. The best candidate symbol estimates generated from each stage of the multi-stage SLI demodulator are summed to form cumulative symbol estimates.

Abstract translation: 公开了一种用于多级SLI解调器的解调方法和装置。 来自每个解调级的残余信号被建模为有限的未解决信号组，并且引入新的度量用于搜索最佳候选符号估计。 可以基于剩余信号的概率分布函数或未解决的信号的概率质量函数来评估度量。 该度量也可以通过常规欧几里德度量和校正度量的总和来近似。 从多级SLI解调器的每个级产生的最佳候选符号估计被相加以形成累积符号估计。

公开(公告)号：US20140044202A1

公开(公告)日：2014-02-13

申请号：US13584082

申请日：2012-08-13

Applicant: Dennis Hui

Inventor： Dennis Hui

IPC: H04L27/04 ,  H04L27/28 ,  H04L27/06

CPC classification number: H04B1/0475 ,  H04L27/2627 ,  H04L27/2697 ,  H04L27/32

Abstract: Methods and systems are disclosed for transmitting data over a desired frequency tone in the presence of an interference that has an unknown magnitude that is substantially constant. In general, data symbols are transmitted in a null space of the desired frequency tone. The null space of the desired frequency tone is orthogonal to the desired frequency tone. As such, the data symbols transmitted in the null space of the desired frequency tone are not interfered with by the interference at the desired frequency tone regardless of the magnitude of the interference. The data symbols transmitted in the null space of the desired frequency tone can then be recovered by a receiver without estimation of or compensation for the interference at the desired frequency tone.

Abstract translation: 公开了用于在存在基本恒定的未知幅度的干扰的情况下在所需频率音上传输数据的方法和系统。 通常，数据符号在所需频率音的零空间中发送。 所需频率音的零空间与期望的频率音调正交。 这样，在期望的频率音调的零空间中发送的数据符号不受干扰的干扰，而与受干扰的幅度无关。 在所需频率音调的零空间中发送的数据符号然后可以由接收机恢复，而不需要对所需频率音调下的干扰进行估计或补偿。

公开(公告)号：US08649453B2

公开(公告)日：2014-02-11

申请号：US13434955

申请日：2012-03-30

Applicant: Dennis Hui ,  Ali S. Khayrallah

Inventor： Dennis Hui ,  Ali S. Khayrallah

IPC: H04K1/10

CPC classification number: H04L27/38 ,  H04L25/067 ,  H04L27/2647

Abstract: Systems and methods utilize enhanced metrics for demodulation and/or soft bit information generation in the presence of a non-constant envelope modulated interfering signal. In one embodiment, a receiver includes a downconverter and a demodulator. The downconverter receives a radio frequency signal comprising a desired signal, noise, and a non-constant envelope modulated interfering signal, and downconverts the radio frequency signal to provide a downconverted signal. The demodulator demodulates the downconverted signal based on a demodulation metric that models the non-constant envelope modulated interfering signal as a stationary non-Gaussian random process with a probability distribution derived from a modulation constellation of a modulation used for the non-constant envelope modulated interfering signal. In one embodiment, the demodulator outputs demodulated symbols. In another embodiment, the demodulator outputs soft bit information.

Abstract translation: 在存在非恒定包络调制干扰信号的情况下，系统和方法利用用于解调和/或软比特信息生成的增强度量。 在一个实施例中，接收机包括下变频器和解调器。 下变频器接收包括期望信号，噪声和非恒定包络调制干扰信号的射频信号，并且降频变频信号以提供下变频信号。 解调器基于解调度量来解调下变频信号，该解调度量将非恒定包络调制干扰信号建模为具有从用于非恒定包络调制干扰的调制的调制星座导出的概率分布的固定非高斯随机过程 信号。 在一个实施例中，解调器输出解调符号。 在另一个实施例中，解调器输出软比特信息。

公开(公告)号：US20140029511A1

公开(公告)日：2014-01-30

申请号：US13556818

申请日：2012-07-24

Applicant: Chester Park ,  Dennis Hui

Inventor： Chester Park ,  Dennis Hui

IPC: H04W4/00

CPC classification number: H04L27/2627 ,  H04L27/2631

Abstract: Methods may be provided to transmit data from a wireless terminal operating in a radio access network. For example, sampling rate conversion may be performed on a serial stream of modulation symbols to generate sampling rate converted symbols, and the sampling rate converted symbols may be transmitted over a wireless channel to a node of the radio access network. Related terminals are also discussed.

Abstract translation: 可以提供方法来从在无线电接入网络中操作的无线终端发送数据。 例如，可以对串行调制符号流执行采样率转换以产生采样率转换的符号，并且可以通过无线信道将采样率转换的符号发送到无线电接入网络的节点。 还讨论了相关终端。

公开(公告)号：US20130294593A1

公开(公告)日：2013-11-07

申请号：US13461535

申请日：2012-05-01

Applicant: Bo Xing ,  Yi-Pin Eric Wang ,  Dennis Hui

Inventor： Bo Xing ,  Yi-Pin Eric Wang ,  Dennis Hui

IPC: H04M15/00

CPC classification number: G06Q30/0241 ,  H04M3/42017 ,  H04M3/4878

Abstract: A voice call network node communicates advertisements to user terminals of a telecommunications system. The voice call network node includes a voice call handling component and an advertisement insertion component. The voice call handling component responds to a voice call from a caller user terminal by identifying characteristics of the caller user terminal and/or the callee user terminal. The advertisement insertion component communicates voice call profile information through a network to an advertisement service offering node. The voice call profile information identifies characteristics of the caller user terminal and/or the callee user terminal The advertisement insertion component also receives an advertisement from the advertisement service offering node responsive to the communicated voice call profile information, and communicates the advertisement to the caller user terminal and/or to the callee user terminal Related advertisement service offering nodes and user terminals are disclosed.

Abstract translation: 语音呼叫网络节点将广告传送到电信系统的用户终端。 语音呼叫网络节点包括语音呼叫处理组件和广告插入组件。 语音呼叫处理组件通过识别主叫用户终端和/或被叫用户终端的特征来响应来自主叫用户终端的语音呼叫。 广告插入部件通过网络将语音呼叫简档信息传送到广告服务提供节点。 语音呼叫简档信息识别呼叫者用户终端和/或被叫用户终端的特征广告插入组件还响应于所传送的语音呼叫简档信息从广告服务提供节点接收广告，并将该广告传送给呼叫用户 终端和/或被叫用户终端公开了提供节点和用户终端的相关广告服务。