公开(公告)号：US08761323B2

公开(公告)日：2014-06-24

申请号：US13333478

申请日：2011-12-21

申请人： Yi-Pin Eric Wang ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Cagatay Konuskan

发明人： Yi-Pin Eric Wang ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Stephen Grant ,  Ning He ,  Niklas Johansson ,  Cagatay Konuskan

IPC分类号： H04B1/10

CPC分类号： H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive strategy is used in which after each stage of interference cancellation, impairment covariance is parametrically updated and combining weights of the receiver are adapted to reflect the updated impairment covariance.

摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 在干扰消除的每个阶段之后，干扰特性发生变化。 使用自适应策略，其中在干扰消除的每个阶段之后，对损伤协方差进行参数更新，并且接收机的组合权重被适配以反映更新的损害协方差。

公开(公告)号：US20130077670A1

公开(公告)日：2013-03-28

申请号：US13333478

申请日：2011-12-21

申请人： Yi-Pin Eric Wang ,  Cagatay Konuskan ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Niklas Johansson ,  Ning He ,  Stephen Grant

发明人： Yi-Pin Eric Wang ,  Cagatay Konuskan ,  Gregory Bottomley ,  Jung-Fu Cheng ,  Niklas Johansson ,  Ning He ,  Stephen Grant

IPC分类号： H04B1/10 ,  H04L27/01

CPC分类号： H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive strategy is used in which after each stage of interference cancellation, impairment covariance is parametrically updated and combining weights of the receiver are adapted to reflect the updated impairment covariance.

摘要翻译： 在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。 在干扰消除的每个阶段之后，干扰特性发生变化。 使用自适应策略，其中在干扰消除的每个阶段之后，对损伤协方差进行参数更新，并且接收机的组合权重被适配以反映更新的损害协方差。

公开(公告)号：US07724813B2

公开(公告)日：2010-05-25

申请号：US11321709

申请日：2005-12-29

申请人： Yi-Pin Eric Wang ,  Gregory Bottomley ,  Lennart Andersson

发明人： Yi-Pin Eric Wang ,  Gregory Bottomley ,  Lennart Andersson

IPC分类号： H04B17/00 ,  H04B7/00

CPC分类号： H04W52/286 ,  H04B2201/709727 ,  H04W52/16 ,  H04W52/325

摘要： According to method and apparatus embodiments taught herein, power control feedback is generated for a control channel signal that is received in conjunction with a reference channel signal based on the reference channel's signal strength or quality, and an estimate of a gain factor relating the control and reference channel signals. By way of non-limiting example set in a Wideband CDMA (WCDMA) context, the reference channel signal comprises a Common Pilot Channel (CPICH) signal and the control channel signal comprises a Fractional Dedicated Physical Channel (F-DPCH) signal that is transmitted at an (unknown) power gain relative to the CPICH signal.

摘要翻译： 根据本文教导的方法和装置实施例，为基于参考信道的信号强度或质量而结合参考信道信号接收的控制信道信号生成功率控制反馈，以及与控制和 参考通道信号。 通过在宽带CDMA（WCDMA）上下文中设置的非限制性示例，参考信道信号包括公共导频信道（CPICH）信号，并且控制信道信号包括传输的分数专用物理信道（F-DPCH）信号 以相对于CPICH信号的（未知）功率增益。

公开(公告)号：US20070147481A1

公开(公告)日：2007-06-28

申请号：US11314740

申请日：2005-12-22

申请人： Gregory Bottomley ,  Jung-Fu Cheng

发明人： Gregory Bottomley ,  Jung-Fu Cheng

IPC分类号： H04B1/00 ,  H03D1/00 ,  H04B1/10

CPC分类号： H03M13/2957 ,  H03M13/6331 ,  H04B1/712 ,  H04B2201/709727 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/03063

摘要： A linear turbo-equalizer for use in a CDMA receiver equalizes a despread received signal (rather than the spread received signal) to suppress self-interference resulting from coupling between transmitted symbols. In an example implementation, a linear equalizer based on a generalized-Rake (G-Rake) receiver design uses decoder feedback in forming Rake combining weights as well as in forming a self-interference estimate removed from the equalizer signal provided to the decoder. Preferably, turbo de-coding is also performed. In that case, each turbo-decoder component preferably executes one pass before feeding back information to the equalizer. This ensures that the turbo-decoder does not prematurely lock onto an incorrect code word before feeding back extrinsic information to the equalizer.

摘要翻译： 用于CDMA接收机的线性turbo均衡器使解扩展的接收信号（而不是扩展接收信号）均衡，以抑制由传输符号之间的耦合产生的自干扰。 在示例实现中，基于广义Rake（G-Rake）接收机设计的线性均衡器在形成Rake组合权重时使用解码器反馈，以及形成从提供给解码器的均衡器信号中去除的自干扰估计。 优选地，还执行turbo解码。 在这种情况下，每个turbo解码器组件优选地在将信息反馈给均衡器之前执行一次通过。 这确保了在将外部信息反馈给均衡器之前，turbo解码器不会过早地锁定到不正确的代码字。

公开(公告)号：US20050289429A1

公开(公告)日：2005-12-29

申请号：US10915134

申请日：2004-08-10

申请人： Gregory Bottomley ,  Rajaram Ramesh ,  Jung-Fu Cheng

发明人： Gregory Bottomley ,  Rajaram Ramesh ,  Jung-Fu Cheng

IPC分类号： G06F11/00 ,  G06F11/30 ,  G08C25/00 ,  H03M13/00 ,  H03M13/03 ,  H03M13/29 ,  H04L1/00

CPC分类号： H04L1/005 ,  H03M13/2957 ,  H03M13/2975 ,  H04L1/0066

摘要： A method and apparatus for decoding turbo encoded data. A first turbo decoding iteration is performed to produce a most likely sequence of symbols, each symbol having an amplitude value and a positive or negative sign. The sequence of symbols is error checked, and if an error is detected, the apparatus forms a next most likely sequence by reversing the positive or negative sign of the symbol having the smallest amplitude. If an error is again detected, additional sign reversals are performed on symbols with larger amplitudes, and on multiple symbols. Each modification is error checked. If none of the modifications produce an error-free sequence, and a maximum number of modifications are performed, the apparatus performs another turbo decoding iteration to produce another sequence of symbols. The process is then repeated until an error-free sequence is produced or a maximum number of iterations are performed.

摘要翻译： 用于对turbo编码数据进行解码的方法和装置。 执行第一turbo解码迭代以产生最可能的符号序列，每个符号具有振幅值和正号或负号。 符号序列被错误检查，并且如果检测到错误，则该装置通过反转具有最小幅度的符号的正号或负号来形成下一个最可能的序列。 如果再次检测到错误，则对具有较大幅度的符号和多个符号执行附加符号反转。 每个修改都被错误检查。 如果没有一个修改产生无错的序列，并且执行最大数目的修改，则该装置执行另一个turbo解码迭代以产生另一个符号序列。 然后重复该过程，直到产生无错序列或执行最大次数。

公开(公告)号：US20060291543A1

公开(公告)日：2006-12-28

申请号：US11158665

申请日：2005-06-22

申请人： Tracy Fulghum ,  Gregory Bottomley

发明人： Tracy Fulghum ,  Gregory Bottomley

IPC分类号： H04B1/707

CPC分类号： H04B1/712 ,  H04B2201/709727

摘要： A wireless communication receiver obtains improved performance under certain fast fading conditions by basing one or more received signal processing operations on pre-despreading chip sample correlations rather than on post-despreading noise correlations, but preserves soft scaling information by determining one or more scaling factors that relate the chip sample correlations to the noise correlations. By way of non-limiting examples, a Generalized RAKE receiver circuit may base combining weight generation on chip sample correlations rather than on post-despreading pilot symbol noise correlations, but scale the combining weights as a function of the one or more scaling factors, or, equivalently, scale the combined values generated from the combining weights. Similar scaling may be performed with respect to chip equalization filter combining weights in a chip equalization receiver circuit. Further, Signal-to-Interference Ratio (SIR) estimation may be improved in terms of fast fading responsiveness by using chip sample correlations, while preserving the proper scaling.

公开(公告)号：US20060262754A1

公开(公告)日：2006-11-23

申请号：US11296560

申请日：2005-12-07

申请人： Lennart Andersson ,  Yi-Pin Wang ,  Gregory Bottomley

发明人： Lennart Andersson ,  Yi-Pin Wang ,  Gregory Bottomley

IPC分类号： H04Q7/00

CPC分类号： H04W52/56 ,  H04B17/336 ,  H04B2201/709727 ,  H04W52/12

摘要： A wireless communication device or system generates transmit power control feedback for a received power control channel by determining a command error rate (CER), or by identifying a target signal quality for the power control channel according to a defined signal-quality-to-CER mapping function. Generally, the power control channel does not include error-coded data to use for CER estimation. However, in one embodiment, the channel does include known reference bits that are evaluated for CER estimation, with the estimated CER used to set the signal quality target for inner loop power control. In other embodiments, a computed reception error probability is used to identify a CER estimate according to a defined probability-to-CER mapping function. By way of non-limiting example, these embodiments may be used to provide power control feedback for power control commands transmitted on a Fractional Dedicated Physical Channel in WCDMA systems.

摘要翻译： 无线通信设备或系统通过确定命令错误率（CER）或者通过根据定义的信号质量到CER来识别功率控制信道的目标信号质量来为接收到的功率控制信道生成发射功率控制反馈 映射功能。 通常，功率控制信道不包括用于CER估计的错误编码数据。 然而，在一个实施例中，信道确实包括对CER估计进行评估的已知参考比特，其中估计的CER用于设置用于内环功率控制的信号质量目标。 在其他实施例中，使用计算的接收错误概率来根据所定义的概率到CER映射函数来识别CER估计。 作为非限制性示例，这些实施例可以用于为在WCDMA系统中的分数专用物理信道上发送的功率控制命令提供功率控制反馈。

公开(公告)号：US20050215218A1

公开(公告)日：2005-09-29

申请号：US10811699

申请日：2004-03-29

申请人： Gregory Bottomley ,  Ali Khayrallah

发明人： Gregory Bottomley ,  Ali Khayrallah

IPC分类号： H04B17/40 ,  H04B1/707 ,  H04L25/03 ,  H04B17/00 ,  H04B1/69

CPC分类号： H04B1/712 ,  H04B1/7097 ,  H04B2201/709727

摘要： A method and apparatus derives an impairment correlation matrix to process signals received at a wireless receiver over multiple paths of a multi-path channel. The receiver includes first and second impairment correlation estimators for estimating first and second impairment correlation matrices based on despread symbols received over multiple paths of a multi-path channel. The receiver then derives the impairment correlation matrix based on the estimated first and second impairment correlation matrices. The receiver may combine traffic despread values to suppress interference using weighting factors calculated based on the derived impairment correlation matrix. Further, the receiver may estimate a signal-to-interference ratio based on the derived impairment correlation matrix.

摘要翻译： 方法和装置导出损害相关矩阵以处理在多路径信道的多个路径上在无线接收机处接收的信号。 接收机包括用于基于在多路径信道的多个路径上接收的解扩符号来估计第一和第二损害相关矩阵的第一和第二损害相关估计器。 然后，接收机基于估计的第一和第二损害相关矩阵导出损害相关矩阵。 接收机可以组合业务解扩值以使用基于导出的损害相关矩阵计算的加权因子来抑制干扰。 此外，接收机可以基于导出的损害相关矩阵来估计信号干扰比。

公开(公告)号：US20100027590A1

公开(公告)日：2010-02-04

申请号：US12513972

申请日：2006-11-07

申请人： Girum Alebachew ,  Carmela Cozzo ,  Gregory Bottomley ,  Fredrik Huss ,  Gunnar Peters

发明人： Girum Alebachew ,  Carmela Cozzo ,  Gregory Bottomley ,  Fredrik Huss ,  Gunnar Peters

IPC分类号： H04B1/707 ,  H04B1/10

CPC分类号： H04W52/60 ,  H04B1/712 ,  H04B2201/709727 ,  H04W52/241

摘要： The present invention relates to a receiver comprising a fast power control unit, said fast power control unit being arranged to continuously control a quality measure of a radio channel. The receiver is characterized in that the quality measure is a modified Signal to Interference plus noise ratio (SIR) in which the influence from self interference has been removed. The invention further relates to a method for continuously controlling a quality measure of a radio channel, wherein a modified Signal to Interference plus noise ratio (SIR) is continuously determined in which the influence from self interference has been removed.

摘要翻译： 本发明涉及包括快速功率控制单元的接收机，所述快速功率控制单元被布置成连续地控制无线电信道的质量测量。 接收机的特征在于，质量测量是修改的信号与干扰加噪声比（SIR），其中已经去除了自身干扰的影响。 本发明还涉及一种用于连续地控制无线电信道的质量测量的方法，其中连续地确定修改的信号与干扰加噪声比（SIR），其中已经去除了自身干扰的影响。

公开(公告)号：US07443826B1

公开(公告)日：2008-10-28

申请号：US09678907

申请日：2000-10-04

申请人： Roozbeh Atarius ,  Gregory Bottomley ,  Paul W. Dent

发明人： Roozbeh Atarius ,  Gregory Bottomley ,  Paul W. Dent

IPC分类号： H04B7/216

CPC分类号： H04B1/7087 ,  H04B1/712 ,  H04L2027/0055 ,  H04L2027/0093

摘要： Code division multiple access signals received through at least one multipath propagation channel are processed to produce at least one relative frequency error estimate. This involves receiving and processing the signals using a local frequency reference oscillator to obtain representative complex numerical samples for processing. The complex numerical samples are correlated with shifts of a locally generated despreading code and a number of complex channel estimates are produced, each corresponding to a different delayed ray of the at least one multipath propagation channel. A frequency error estimate is computed for each ray based on successive values of a respective one of the channel estimates, and a weighted summation of the frequency error estimates is performed to provide at least one relative frequency error estimate.

摘要翻译： 经由至少一个多径传播信道接收的码分多址信号被处理以产生至少一个相对频率误差估计。 这涉及使用本地频率参考振荡器接收和处理信号以获得用于处理的代表性的复数数值样本。 复数值样本与本地生成的解扩码的移位相关，并且产生多个复信道估计，每个对应于至少一个多径传播信道的不同延迟的射线。 基于信道估计的相应一个的连续值来计算每个射线的频率误差估计，并且执行频率误差估计的加权求和以提供至少一个相对频率误差估计。