公开(公告)号：US06668030B2

公开(公告)日：2003-12-23

申请号：US09848504

申请日：2001-05-03

申请人： Alexandr Kuzminskiy ,  Carlo Luschi ,  Paul Edward Strauch ,  Ran-Hong Yan

发明人： Alexandr Kuzminskiy ,  Carlo Luschi ,  Paul Edward Strauch ,  Ran-Hong Yan

IPC分类号： H04B110

CPC分类号： H04L1/20 ,  H04B7/005 ,  H04L1/06 ,  H04L2025/03566 ,  H04L2025/03726

摘要： A mobile telephone system includes a base station which establishes a link with a selected mobile station. The received signal from the mobile station will include a noise component as well as a possible interference component from another mobile station operating at the same frequency in another cell. The base station has a trellis based equalization system which operates on the assumption that the received signal includes components which have a predominantly Gaussian characteristic. A switch controller determines when the interference component (which is non-gaussian) in the received signal becomes a dominant component and operates to switch a spatio-temporal filter into the circuit instead of the trellis based equalization system, to improve the bit error rate performance.

摘要翻译： 移动电话系统包括与所选择的移动站建立链接的基站。 来自移动台的接收信号将包括噪声分量以及来自在另一小区中以相同频率工作的另一移动站的可能干扰分量。 基站具有基于网格的均衡系统，其基于接收信号包括具有主要高斯特性的分量来运行。 开关控制器确定接收信号中的干扰分量（其是非高斯）何时成为主要分量并且操作以将时空滤波器切换到电路而不是基于网格的均衡系统，以提高误码率性能 。

公开(公告)号：US06539067B1

公开(公告)日：2003-03-25

申请号：US09300495

申请日：1999-04-28

申请人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

发明人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

IPC分类号： H04L2706

CPC分类号： H04L25/0202

摘要： A method of estimating channel impulse response in a signal transmitted over a channel in a communication system is described. The channel estimator obtains a priori knowledge about the transmitted signal, and then uses the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimizes the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimized is a cost function, represented by E{∥r−Bh∥2r}. By using soft decision feedback, the invention minimizes erroneous decision feedback which can cause error propagation. The decisions are usually in the form of log likelihood ratios (LLR).

摘要翻译： 描述了在通信系统中通过信道发送的信号中估计信道脉冲响应的方法。 信道估计器获得关于发射信号的先验知识，然后使用发射信号和先验知识来选择信道脉冲响应的估计，其使发射信号和重构信号之间的预期距离最小化。 最小化的预期距离是由E {‖r-Bh‖2r}表示的成本函数。 通过使用软判决反馈，本发明使可能导致错误传播的错误判定反馈最小化。 决策通常是对数似然比（LLR）的形式。

公开(公告)号：US06271772B1

公开(公告)日：2001-08-07

申请号：US09235049

申请日：1999-01-21

申请人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

发明人： Carlo Luschi ,  Syed Aon Mujtaba ,  Magnus Sandell ,  Paul Edward Strauch ,  Ran-Hong Yan ,  Stephan ten Brink

IPC分类号： H03M734

CPC分类号： H03M13/2948 ,  H03M13/29

摘要： Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

摘要翻译： 提供了用于迭代地解码信号的装置和方法。 该装置包括用于迭代地解码信号的中央资源库。 中央池可以运行多个迭代解码过程，每个进程根据请求分配给信号处理单元，并且取决于资源可用性。

公开(公告)号：US06895039B2

公开(公告)日：2005-05-17

申请号：US09782423

申请日：2001-02-13

申请人： Alexandr Kuzminskiy ,  Carlo Luschi ,  Konstantinos Samaras

发明人： Alexandr Kuzminskiy ,  Carlo Luschi ,  Konstantinos Samaras

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/06 ,  H04L12/56 ,  H04W28/04 ,  H04W74/08 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0059 ,  H04L1/06

摘要： In a PRACH channel, colliding signals are resolved by use of a number of training-like symbols in the colliding data payloads. The signals are estimated by spatio temporal filters running a training-based or semi-blind algorithm, and a selection criterion is applied to the estimated signals, such as distance from the finite alphabet or the mean square error.

摘要翻译： 在PRACH信道中，通过在冲突数据有效载荷中使用若干训练样符号来解决冲突信号。 通过运行基于训练或半盲算法的时空滤波器估计信号，并且将选择标准应用于估计信号，例如距有限字母表的距离或均方误差。

公开(公告)号：US06459728B1

公开(公告)日：2002-10-01

申请号：US09302764

申请日：1999-04-30

申请人： Israel Bar-David ,  Carlo Luschi ,  Ran-Hong Yan

发明人： Israel Bar-David ,  Carlo Luschi ,  Ran-Hong Yan

IPC分类号： H04L2701

CPC分类号： H04L25/0202 ,  H04L25/0212 ,  H04L25/0236

摘要： A method and apparatus for estimating channel impulse response and data in a signal transmitted over a channel in a communication system. The channel impulse response is estimated uses correlative channel sounding, and then, using the estimated channel impulse response, the data in the signal is estimated. The output is then fed back to the channel impulse response estimator and the channel impulse estimation is repeated. The data estimation and channel impulse response estimation may be iterated a number of times.

摘要翻译： 一种用于估计在通信系统中通过信道发送的信号中的信道脉冲响应和数据的方法和装置。 估计信道脉冲响应使用相关信道探测，然后使用估计的信道脉冲响应，估计信号中的数据。 然后将输出反馈到信道脉冲响应估计器，并重复信道脉冲估计。 数据估计和信道脉冲响应估计可以重复多次。

公开(公告)号：US08964716B2

公开(公告)日：2015-02-24

申请号：US12999895

申请日：2009-05-26

申请人： Phil Jones ,  Carlo Luschi ,  Abdelkader Medles ,  Donal Price

发明人： Phil Jones ,  Carlo Luschi ,  Abdelkader Medles ,  Donal Price

IPC分类号： H04L12/26 ,  H04B7/216 ,  H04K1/02 ,  H04B7/00 ,  H04B1/707 ,  H03G3/30 ,  H04B1/04

CPC分类号： H04B1/707 ,  H03G3/3042 ,  H04B1/0483 ,  H04B2201/70706 ,  H04W52/367

摘要： A method of transmitting an RF signal over a wireless communication network is provided. The method comprises determining a respective weighting factor for each of a plurality of digital signals each corresponding to a respective channel, the weighting factors weighting the digital signals to produce a composite signal intended for transmission as an RF signal via a power amplifier. The method further comprises executing instructions on a processor to dynamically calculate a metric related to the non-linearity of the power amplifier's transfer characteristics for the composite signal using the determined weighting factors. The method further comprises supplying to the power amplifier a signal for transmission as an RF signal and amplifying the signal for transmission at the power amplifier to transmit an RF signal over the wireless communication network via at least one antenna. The method further comprises controlling the transmission based on the metric related to the amplifier non-linearity.

摘要翻译： 提供了一种通过无线通信网络发射RF信号的方法。 该方法包括为每个对应于相应信道的多个数字信号中的每一个确定相应的加权因子，加权因子对数字信号进行加权，以产生旨在通过功率放大器作为RF信号传输的复合信号。 该方法还包括在处理器上执行指令以使用确定的加权因子动态地计算与复合信号的功率放大器的传输特性的非线性有关的度量。 该方法还包括向功率放大器提供用于传输的信号作为RF信号，并放大信号以在功率放大器处传输，以经由至少一个天线在无线通信网络上发送RF信号。 该方法还包括基于与放大器非线性相关的度量来控制传输。

公开(公告)号：US08824537B2

公开(公告)日：2014-09-02

申请号：US13574995

申请日：2011-01-27

申请人： Steve Allpress ,  Carlo Luschi ,  Simon Nicholas Walker

发明人： Steve Allpress ,  Carlo Luschi ,  Simon Nicholas Walker

IPC分类号： H03H7/30 ,  H04L25/03 ,  H04L25/02

CPC分类号： H04L25/022 ,  H04L25/03012 ,  H04L25/03044 ,  H04L25/03159 ,  H04L2025/03426

摘要： A method, receiver and program for equalizing digital samples of a radio signal received over a wireless communications channel. The method comprises: receiving digital samples of the radio signal; calculating equalizer coefficients in the frequency domain; transforming the equalizer coefficients from the frequency domain to the time domain; and equalizing the digital samples in the time domain using the transformed time domain equalizer coefficients.

摘要翻译： 一种用于均衡通过无线通信信道接收的无线电信号的数字样本的方法，接收机和程序。 该方法包括：接收无线电信号的数字样本; 计算频域中的均衡器系数; 将均衡器系数从频域变换到时域; 并使用变换的时域均衡器系数来均衡时域中的数字样本。

公开(公告)号：US08582632B2

公开(公告)日：2013-11-12

申请号：US13639070

申请日：2011-04-12

申请人： Tarik Tabet ,  Carlo Luschi

发明人： Tarik Tabet ,  Carlo Luschi

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC分类号： H04L1/06 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L25/03305 ,  H04L25/03331

摘要： Method, receiver and computer program product for processing a signal transmitted from a plurality of spatially separated transmit antennas using a Multiple-Input Multiple-Output transmission over a wireless network. The signal is received at a plurality of spatially separated receive antennas, the signal comprising a plurality of data streams and the quality/reliability of each of the data streams in the received signal is determined. Based on the determined quality/reliability of the data streams, a decoding technique is selected to be one of (i) a successive decoding technique for successively decoding data streams in which one of the data streams is decoded and a signal corresponding to said one of the data streams is removed from the received signal prior to decoding further data streams in the received signal, and (ii) a non-successive decoding technique in which each data stream is decoded from the received signal by treating the other data streams as noise in the received signal. The received signal is then decoded using the selected decoding technique.

摘要翻译： 用于通过无线网络使用多输入多输出传输来处理从多个空间分离的发射天线发送的信号的方法，接收机和计算机程序产品。 在多个空间分离的接收天线处接收信号，该信号包括多个数据流，并确定接收信号中的每个数据流的质量/可靠性。 基于所确定的数据流的质量/可靠性，将解码技术选择为（i）连续解码技术之一，用于连续地解码其中一个数据流被解码的数据流，以及与所述数据流对应的信号 在对接收到的信号中的另外的数据流进行解码之前，从接收到的信号中去除数据流，以及（ii）非连续解码技术，其中通过将其他数据流作为噪声处理，从接收信号中解码每个数据流 接收信号。 然后使用所选择的解码技术对所接收的信号进行解码。

公开(公告)号：US08447342B2

公开(公告)日：2013-05-21

申请号：US12808169

申请日：2008-12-11

申请人： Edward Andrews ,  Jonathan Wallington ,  Carlo Luschi

发明人： Edward Andrews ,  Jonathan Wallington ,  Carlo Luschi

IPC分类号： H04W52/04

CPC分类号： H04W52/12 ,  H04W52/287

摘要： A method of power control in a wireless communication system, wherein blocks are transmitted from a transmitter to a receiver via a wireless transport channel. The method comprises comparing a target signal quality value with a received signal quality value and providing the results of the comparing step to the transmitter to adjust transmit power based on the comparing step. The target signal quality value is set by the following steps: determining an initial target value; detecting if a data block has been received; detecting if received blocks have been successfully decoded; and decreasing the target value when pass blocks are received and increasing the target value when failed blocks are received subject to monitoring a period of inactivity on the transport channel in which no blocks are received.

摘要翻译： 一种在无线通信系统中进行功率控制的方法，其中通过无线传输信道将块从发射机发射到接收机。 该方法包括：将目标信号质量值与接收到的信号质量值进行比较，并根据比较步骤向发射机提供比较步骤的结果以调整发射功率。 目标信号质量值由以下步骤设定：确定初始目标值; 检测是否已经接收到数据块; 检测接收到的块是否已被成功解码; 并且当接收到传递块时降低目标值，并且当接收到失败的块时，增加目标值，在监视不接收块的传输信道上的不活动周期的情况下。

公开(公告)号：US08422607B2

公开(公告)日：2013-04-16

申请号：US12808157

申请日：2008-12-04

申请人： Carlo Luschi ,  Abdelkader Medles

发明人： Carlo Luschi ,  Abdelkader Medles

IPC分类号： H04B7/10

CPC分类号： H04L25/0204 ,  H04L25/0238

摘要： A method and system for generating channel estimates for processing signals received through first and second transmission channels in a wireless communications network, each channel corresponding to a separate transmit antenna, and each signal comprising a plurality of samples derived from symbols transmitted in the signal by: generating first variable z1 (k) and second variable z2 (k); and providing a set of filter coefficients (I) and generating first and second channel estimates using first and second variables and a set of filter coefficients.

摘要翻译： 一种用于生成用于处理在无线通信网络中通过第一和第二传输信道接收的信号的信道估计的方法和系统，每个信道对应于单独的发射天线，并且每个信号包括从在所述信号中发送的符号导出的多个样本： 生成第一变量z1（k）和第二变量z2（k）; 以及提供一组滤波器系数（I），并使用第一和第二变量和一组滤波器系数产生第一和第二信道估计。