Low Complexity MMSE Equalization Process and Equalizer for Doing the Same
    1.
    发明申请
    Low Complexity MMSE Equalization Process and Equalizer for Doing the Same 有权
    低复杂性MMSE均衡过程和均衡器

    公开(公告)号:US20130188681A1

    公开(公告)日:2013-07-25

    申请号:US13635865

    申请日:2011-03-18

    IPC分类号: H04L25/03

    摘要: Process for equalizing a signal received in a receiver of a Terminal Equipment in a wireless communication system, said process comprises the steps of:—receiving a signal r—applying an iterative algorithm based on a sequence of varying preconditionners in accordance with the following formula: based on a sequence of preconditioning matrices Pj, each matrix depending on H, the variance of the noise, and the precedent matrices Pj within said sequence.

    摘要翻译: 用于对在无线通信系统中的终端设备的接收机中接收到的信号进行均衡的过程,所述过程包括以下步骤: - 根据以下公式接收基于变化预处理器的序列的迭代算法的信号r: 基于预处理矩阵Pj的序列,取决于H的每个矩阵,噪声的方差以及所述序列内的先前矩阵Pj。

    SYSTEM AND METHOD FOR OFDM RECEPTION IN THE PRESENCE OF DOPPLER EFFECT BASED ON TIME DOMAIN WINDOWING
    2.
    发明申请
    SYSTEM AND METHOD FOR OFDM RECEPTION IN THE PRESENCE OF DOPPLER EFFECT BASED ON TIME DOMAIN WINDOWING 有权
    基于时域显示的多普勒效应存在的OFDM接收系统与方法

    公开(公告)号:US20120057628A1

    公开(公告)日:2012-03-08

    申请号:US13256414

    申请日:2010-03-11

    IPC分类号: H04L27/06 H04L27/01

    摘要: An OFDM receiver for processing an OFDM received signal to perform OFDM reception in presence of Doppler effects is provided. The receiver has at least two parallel processing chains, each processing chain has a time domain windowing for processing an OFDM block. The processing consisting of the multiplication, element by element of the OFDM block, by a set of predetermined coefficients.The receiver also has a DFT block (such as FFT) for demodulating said windowed OFDM symbol into the frequency domain equivalent wherein the windowings of the at least two parallel processing chains have complementary profiles so as to avoid any loss of information throughout the OFDM sample. The invention also provides a process to be used in an OFDM receiver.

    摘要翻译: 提供了一种用于处理OFDM接收信号以在存在多普勒效应的情况下进行OFDM接收的OFDM接收机。 接收机具有至少两个并行处理链,每个处理链具有用于处理OFDM块的时域加窗。 该处理由OFDM块的逐个乘法乘以一组预定系数组成。 接收机还具有用于将所述加窗的OFDM符号解调为频域等价物的DFT块(诸如FFT),其中,所述至少两个并行处理链的窗口具有互补特征,以避免整个OFDM样本中的信息丢失。 本发明还提供了一种在OFDM接收机中使用的过程。

    TURBO DECODER WITH EXTRINSIC INFORMATION SCALING MODULES
    3.
    发明申请
    TURBO DECODER WITH EXTRINSIC INFORMATION SCALING MODULES 有权
    涡轮解码器,具有超级信息分度模块

    公开(公告)号:US20100070826A1

    公开(公告)日:2010-03-18

    申请号:US12306637

    申请日:2007-06-14

    IPC分类号: H03M13/29 G06F11/10 H03M13/05

    摘要: The invention related to a turbo decoder comprising SISO decoding modules each other interconnected in a feedback control scheme having scaling modules for applying a scaling factor to extrinsic information delivered by said SISO decoding modules. The turbo decoder comprises a selection module for adaptively selecting said scaling factor based on a number of decoding iterations of the turbo decoder.

    摘要翻译: 本发明涉及一种包括SISO解码模块的turbo解码模块,其在具有缩放模块的反馈控制方案中相互连接,该缩放模块用于将缩放因子应用于由所述SISO解码模块传送的外部信息。 turbo解码器包括一个选择模块,用于根据turbo解码器的解码迭代次数自适应地选择所述缩放因子。

    Turbo decoder with extrinsic information scaling modules
    4.
    发明授权
    Turbo decoder with extrinsic information scaling modules 有权
    具有外部信息缩放模块的Turbo解码器

    公开(公告)号:US08276037B2

    公开(公告)日:2012-09-25

    申请号:US12306637

    申请日:2007-06-14

    IPC分类号: H03M13/00

    摘要: The invention related to a turbo decoder comprising SISO decoding modules each other interconnected in a feedback control scheme having scaling modules for applying a scaling factor to extrinsic information delivered by said SISO decoding modules. The turbo decoder comprises a selection module for adaptively selecting said scaling factor based on a number of decoding iterations of the turbo decoder.

    摘要翻译: 本发明涉及一种包括SISO解码模块的turbo解码模块,其在具有缩放模块的反馈控制方案中相互连接,该缩放模块用于将缩放因子应用于由所述SISO解码模块传送的外部信息。 turbo解码器包括一个选择模块,用于根据turbo解码器的解码迭代次数自适应地选择所述缩放因子。

    Low complexity MMSE equalization process and equalizer for doing the same
    5.
    发明授权
    Low complexity MMSE equalization process and equalizer for doing the same 有权
    低复杂度MMSE均衡过程和均衡器做同样的操作

    公开(公告)号:US08693533B2

    公开(公告)日:2014-04-08

    申请号:US13635865

    申请日:2011-03-18

    IPC分类号: H03H7/30

    摘要: Process for equalizing a signal received in a receiver of a Terminal Equipment in a wireless communication system, said process comprises the steps of:—receiving a signal r—applying an iterative algorithm based on a sequence of varying preconditionners in accordance with the following formula: based on a sequence of preconditioning matrices Pj, each matrix depending on H, the variance of the noise, and the precedent matrices Pj within said sequence.

    摘要翻译: 用于对在无线通信系统中的终端设备的接收机中接收到的信号进行均衡的过程,所述过程包括以下步骤: - 根据以下公式接收基于变化预处理器的序列的迭代算法的信号r: 基于预处理矩阵Pj的序列,取决于H的每个矩阵,噪声的方差以及所述序列内的先前矩阵Pj。

    Channel estimation using common and dedicated pilots
    6.
    发明授权
    Channel estimation using common and dedicated pilots 有权
    使用通用和专用飞行员的信道估计

    公开(公告)号:US08259854B2

    公开(公告)日:2012-09-04

    申请号:US12296891

    申请日:2007-04-11

    IPC分类号: H03K9/00 H04L27/00

    CPC分类号: H04L25/0226 H04L25/0228

    摘要: The present invention relates to a receiver apparatus and method of channel estimation in a telecommunication system which provides at least two pilot sequences, and to a computer program product. Channel estimation is achieved by estimating channel taps separately for each of the at least two pilot sequences in every transmission block, and for applying estimated channel taps obtained from the estimation to at least one of a temporal and spatial filtering or combining operation to refine the channel estimate. Accordingly, temporal correlations and cross-correlations of the at least two pilot sequences are exploited without requiring knowledge of path delays and beamforming parameters.

    摘要翻译: 本发明涉及在提供至少两个导频序列的电信系统中的信道估计的接收机装置和方法以及计算机程序产品。 通过对每个传输块中的至少两个导频序列中的每一个单独地估计信道抽头,并且将从估计获得的估计信道抽头应用于时间和空间滤波或组合操作中的至少一个以优化信道来实现信道估计 估计。 因此,利用了至少两个导频序列的时间相关性和互相关,而不需要知道路径延迟和波束成形参数。

    Sir Estimation Techniques
    7.
    发明申请
    Sir Estimation Techniques 失效
    估计技术评估

    公开(公告)号:US20080318530A1

    公开(公告)日:2008-12-25

    申请号:US11632886

    申请日:2005-07-11

    IPC分类号: H04B17/00

    摘要: The estimated power levels that are used to estimate a signal-to-interference ratio (SIR) are filtered so as to minimize the mean-square error (MSE) of the estimated power estimates. First order infinite impulse response (IIR) filters are used to filter both the signal power estimates and the noise power estimates. Optionally, estimates of the average signal power and average interference power are filtered using Weiner linear prediction filters. The SIR estimates are suitable for use in a transmission channel that includes fading as well as interference, and are suitable for use in BPSK, QPSK, and other modulation systems.

    摘要翻译: 用于估计信号干扰比(SIR)的估计功率电平被滤波,以便使估计功率估计的均方误差(MSE)最小化。 第一阶无限脉冲响应(IIR)滤波器用于滤波信号功率估计和噪声功率估计。 可选地,使用维纳线性预测滤波器来滤除平均信号功率和平均干扰功率的估计。 SIR估计适用于包含衰落和干扰的传输信道,适用于BPSK,QPSK和其他调制系统。

    Methods for channel estimation in the presence of transmit beamforming
    8.
    发明申请
    Methods for channel estimation in the presence of transmit beamforming 有权
    在存在发射波束形成的情况下进行信道估计的方法

    公开(公告)号:US20060023653A1

    公开(公告)日:2006-02-02

    申请号:US10532912

    申请日:2003-10-10

    IPC分类号: H04B7/14 H04J1/10 H04J3/08

    CPC分类号: H04L25/0204 H04L25/0232

    摘要: The present invention relates to a method for estimating a propagation channel in the presence of transmit beam-forming within a receiver, accounting for the structure of two logical channels referred as to a common channel and a dedicated physical channel (CPICH, DPCH) and based on a common structure of corresponding propagation channels, said DPCH channel comprising two sub-channels (DPDCH, DPCCH), said propagation channels being modeled as a linear superposition of a finite number of discrete multipath components following an uncorrelated-scattering wide-sense stationary model, a multipath component being characterized by a time-varying multipath complex coefficient and a delay. Use: RAKE Receiver.

    摘要翻译: 本发明涉及一种用于在存在接收机内的发射波束形成的情况下估计传播信道的方法,考虑了公共信道和专用物理信道(CPICH,DPCH)的基于两个逻辑信道的结构,并且基于 在相应传播信道的公共结构上,所述DPCH信道包括两个子信道(DPDCH,DPCCH),所述传播信道被建模为有限数量的离散多径分量的线性叠加,该离散多径分量遵循不相关散射广义固定模型 多径分量的特征在于时变多径复数系数和延迟。 使用:RAKE接收器。

    System and method for OFDM reception in the presence of dooppler effect based on time domain windowing
    9.
    发明授权
    System and method for OFDM reception in the presence of dooppler effect based on time domain windowing 有权
    在基于时域窗口的多普勒效应的情况下进行OFDM接收的系统和方法

    公开(公告)号:US08824539B2

    公开(公告)日:2014-09-02

    申请号:US13256414

    申请日:2010-03-11

    摘要: An OFDM receiver for processing an OFDM received signal to perform OFDM reception in presence of Doppler effects is provided. The receiver has at least two parallel processing chains, each processing chain has a time domain windowing for processing an OFDM block. The processing consisting of the multiplication, element by element of the OFDM block, by a set of predetermined coefficients.The receiver also has a DFT block (such as FFT) for demodulating said windowed OFDM symbol into the frequency domain equivalent wherein the windowings of the at least two parallel processing chains have complementary profiles so as to avoid any loss of information throughout the OFDM sample. The invention also provides a process to be used in an OFDM receiver.

    摘要翻译: 提供了一种用于处理OFDM接收信号以在存在多普勒效应的情况下进行OFDM接收的OFDM接收机。 接收机具有至少两个并行处理链,每个处理链具有用于处理OFDM块的时域加窗。 该处理由OFDM块的逐个乘法乘以一组预定系数组成。 接收机还具有用于将所述加窗的OFDM符号解调为频域等价物的DFT块(诸如FFT),其中,所述至少两个并行处理链的窗口具有互补特性,以避免整个OFDM样本中的信息丢失。 本发明还提供了一种在OFDM接收机中使用的过程。

    SIR estimation techniques
    10.
    发明授权
    SIR estimation techniques 失效
    SIR估计技术

    公开(公告)号:US07941099B2

    公开(公告)日:2011-05-10

    申请号:US11632886

    申请日:2005-07-11

    IPC分类号: H04B1/00

    摘要: The estimated power levels that are used to estimate a signal-to-interference ratio (SIR) are filtered so as to minimize the mean-square error (MSE) of the estimated power estimates. First order infinite impulse response (IIR) filters are used to filter both the signal power estimates and the noise power estimates. Optionally, estimates of the average signal power and average interference power are filtered using Weiner linear prediction filters. The SIR estimates are suitable for use in a transmission channel that includes fading as well as interference, and are suitable for use in BPSK, QPSK, and other modulation systems.

    摘要翻译: 用于估计信号干扰比(SIR)的估计功率电平被滤波,以便使估计功率估计的均方误差(MSE)最小化。 第一阶无限脉冲响应(IIR)滤波器用于滤波信号功率估计和噪声功率估计。 可选地,使用维纳线性预测滤波器来滤除平均信号功率和平均干扰功率的估计。 SIR估计适用于包含衰落和干扰的传输信道,适用于BPSK,QPSK和其他调制系统。