公开(公告)号：WO2008051152A2

公开(公告)日：2008-05-02

申请号：PCT/SE2007/050701

申请日：2007-10-03

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： CHENG, Jung-Fu

IPC: H04M13/00

CPC classification number: H04M15/00 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3972 ,  H03M13/413 ,  H04B2201/709727

Abstract: In one or more embodiments, a method of processing a soft value sequence according to an iterative soft-input-soft-output (SISO) algorithm comprises carrying out sliding-window processing of the soft value sequence in a first iteration using first window placements and in a second iteration using second window placements, and varying the window placements between the first and second iterations. In at least one embodiment a communication receiver circuit is configured to carry out iterative SISO processing, wherein it processes a soft value sequence using sliding windows, and wherein it varies window placements between one or more iterations. The communication receiver circuit comprises, for example, all or part of a turbo decoding circuit or other type of iterative block decoding circuit, an equalization and decoding circuit, a soft demodulation and decoding circuit, a multi-user detection and decoding circuit, or a multiple-input-multiple-output detection and decoding circuit.

Abstract translation: 在一个或多个实施例中，根据迭代软输入软输出（SISO）算法来处理软值序列的方法包括：使用第一窗口布局在第一次迭代中执行软值序列的滑动窗口处理;以及 在使用第二窗口布局的第二次迭代中，以及在第一和第二迭代之间改变窗口布局。 在至少一个实施例中，通信接收器电路被配置为执行迭代SISO处理，其中它使用滑动窗口处理软值序列，并且其中它改变一个或多个迭代之间的窗口布局。 通信接收电路例如包括turbo解码电路或其他类型的迭代块解码电路，均衡解码电路，软解调和解码电路，多用户检测和解码电路或全部或部分 多输入多输出检测和解码电路。

公开(公告)号：WO2008041917A2

公开(公告)日：2008-04-10

申请号：PCT/SE2007/050513

申请日：2007-07-09

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

Inventor： BOTTOMLEY, Gregory ,  COZZO, Carmela

IPC: H04B1/707 ,  H04L25/02

CPC classification number: H04L25/0242 ,  H04B1/712 ,  H04B2201/709727 ,  H04L25/0228

Abstract: Channel response and impairment correlation estimates are iteratively determined. According to one embodiment of performing channel estimation for use in received signal processing, a channel response estimate is calculated based on an initial impairment correlations estimate and a measured channel response derived from a received signal. A revised impairment correlations estimate is calculated using a parametric approach based on the channel response estimate and the channel response estimate is recalculated based on the revised impairment correlations estimate. According to one embodiment of a wireless communication device, the device comprises a parameter estimation unit configured to iteratively calculate a medium channel response estimate based on a parametric impairment correlations estimate and a measured net channel response derived from a received signal. The wireless communication device also comprises circuitry configured to control how many times the parameter estimation unit calculates the medium channel response estimate.

Abstract translation: 迭代地确定信道响应和损害相关估计。 根据执行用于接收信号处理的信道估计的一个实施例，基于初始损害相关估计和从接收信号导出的测量信道响应来计算信道响应估计。 使用基于信道响应估计的参数方法来计算经修改的减损相关估计，并且基于修正的减损相关估计重新计算信道响应估计。 根据无线通信设备的一个实施例，该设备包括参数估计单元，该参数估计单元被配置为基于参数损害相关估计和从接收信号导出的测量净信道响应来迭代地计算中等信道响应估计。 无线通信设备还包括被配置为控制参数估计单元计算中间信道响应估计的次数的电路。

公开(公告)号：WO2007147506A1

公开(公告)日：2007-12-27

申请号：PCT/EP2007/005166

申请日：2007-06-12

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  LINDOFF, Bengt

Inventor： LINDOFF, Bengt

IPC: H04B1/707

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/709727

Abstract: According to a method taught herein, a multi-branch communication receiver operates in a first mode wherein it despreads individual receiver branch signals with respect to all channelization codes of interest, if sufficient despreader resources are available for such operation. If the receiver estimates that sufficient despreader resources are not available, it operates in a second mode wherein it despreads one or more of the channelization codes from a branch combination signal formed from two or more of the receiver branch signals. The receiver may calculate optimal branch combining weights using an algorithm that maximizes a signal quality of the branch combination signal. A Generalized RAKE (GRAKE) receiver embodiment applies GRAKE detection to the individual receiver branch signals with respect to all channelization codes of interest if sufficient despreader resources are available and, if not, applies GRAKE detection to the branch combination signal for one or more such codes.

Abstract translation: 根据这里教导的方法，多分支通信接收机以第一模式操作，其中如果足够的解扩器资源可用于这种操作，则它对相关于感兴趣的所有信道化码解扩个别接收器分支信号。 如果接收机估计足够的解扩器资源不可用，则其以第二模式工作，其中它从由两个或更多个接收器分支信号形成的分支组合信号中解扩一个或多个信道化码。 接收机可以使用最大化分支组合信号的信号质量的算法来计算最优分支组合权重。 如果足够的解扩器资源可用，则广义RAKE（GRAKE）接收器实施例对相关于所有感兴趣的信道化码的各个接收器分支信号应用GRAKE检测，并且如果不能，则对于一个或多个这样的代码对分支组合信号应用GRAKE检测 。

公开(公告)号：WO2007093336A1

公开(公告)日：2007-08-23

申请号：PCT/EP2007/001157

申请日：2007-02-07

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  WANG, Yi-Pin Eric ,  BOTTOMLEY, Gregory, E. ,  REIAL, Andres

Inventor： WANG, Yi-Pin Eric ,  BOTTOMLEY, Gregory, E. ,  REIAL, Andres

IPC: G06F7/544

CPC classification number: G06F7/5443 ,  H04B2201/709727

Abstract: A method and corresponding circuit for determining a final result for a desired series of multiply-and-accumulate (MAC) operations are based on counting the occurrence of products in the desired series of MAC operations, multiplying the counts by their corresponding products to obtain partial sums, and adding the partial sums to obtain the final result. MAC processing as taught herein can be applied to a wide range of applications, such as received signal processing in wireless communication for computationally efficient (and high-rate) generation of interference correlation estimates and/or equalization filter values for a received communication signal.

Abstract translation: 用于确定期望的一系列乘法和累加（MAC）操作的最终结果的方法和相应的电路是基于计算所需系列MAC操作中的乘积的发生，将计数乘以其相应乘积以获得部分 总和，并添加部分和以获得最终结果。 如本文教导的MAC处理可以应用于广泛的应用，例如无线通信中的接收信号处理，用于对接收到的通信信号计算有效（和高速率）产生干扰相关估计和/或均衡滤波器值。

公开(公告)号：WO2007073315A2

公开(公告)日：2007-06-28

申请号：PCT/SE2006/050022

申请日：2006-03-08

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： CHENG, Jung-fu ,  BOTTOMLEY, Gregory E.

IPC: H04B1/707 ,  H03M13/29

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

Abstract: 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.

Abstract translation: 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到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：WO2006132593A2

公开(公告)日：2006-12-14

申请号：PCT/SE2006/050187

申请日：2006-06-09

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

Inventor： GRANT, Stephen ,  KRASNY, Leonid ,  WANG, Yi-Pin, Eric ,  MOLNAR, Karl, J. ,  CHENG, Jung-Fu

IPC: H04L25/02 ,  H04B7/08

CPC classification number: H04B1/712 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/7107 ,  H04B1/71072 ,  H04B7/04 ,  H04B7/0684 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/18 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/03012 ,  H04L25/03318 ,  H04L25/03331 ,  H04W52/16 ,  H04W52/325 ,  H04W52/346 ,  H04W52/42

Abstract: A wireless communication receiver improves signal impairment correlation estimation in MIMO/MISO systems by considering different transmit power allocations and different transmit antenna power distributions in its impairment correlation calculations. The receiver may be implemented in according to a variety of architectures, including, but not limited to, Successive Interference Cancellation (SIC) Generalized RAKE (G-RAKE), Joint Detection (JD) G-RAKE, and Minimum Mean Squared Error (MMSE) G-RAKE. Regardless of the particular receiver architecture adopted, the improved impairment correlations may be used to calculate improved (RAKE) signal combining weights and/or improve channel quality estimates for reporting by receivers operating in Wideband CDMA (W-CDMA) systems transmitting HSDPA channels via MIMO or MISO transmitters. A transmitter may be configured to facilitate impairment correlation determinations by wireless communication receivers operating in MIMO/MISO environments, by signaling one or more values, e.g., data-to-pilot signal transmit power ratios and/or transmit antenna power distributions for the data and pilot signals.

Abstract translation: 无线通信接收机通过在损伤相关计算中考虑不同的发射功率分配和不同的发射天线功率分布来改善MIMO / MISO系统中的信号损害相关估计。 接收机可以根据各种架构来实现，包括但不限于连续干扰消除（SIC）广义RAKE（G-RAKE），联合检测（JD）G-RAKE和最小均方误差（MMSE） ）G-RAKE。 不考虑所采用的特定接收机架构，改进的损害相关可以用于计算改进的（RAKE）信号组合权重和/或改善用于在通过MIMO发送HSDPA信道的宽带CDMA（W-CDMA）系统中操作的接收机报告的信道质量估计 或MISO发射机。 发射机可以被配置为通过信令一个或多个值（例如数据到导频信号发射功率比和/或数据的发射天线功率分布）来促进在MIMO / MISO环境中操作的无线通信接收机的损害相关确定，以及 导频信号。

公开(公告)号：WO2006066648A1

公开(公告)日：2006-06-29

申请号：PCT/EP2005/011379

申请日：2005-10-21

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  CEDERGREN, Andreas ,  JONSSON, Elias

Inventor： CEDERGREN, Andreas ,  JONSSON, Elias

IPC: H04B1/707 ,  G06F7/52

CPC classification number: G06F7/49936 ,  G06F7/523 ,  H04B1/712 ,  H04B7/0842 ,  H04B2201/70707 ,  H04B2201/709727

Abstract: Coded digital data symbols sent through a transmission channel of a communications network are received in a receiver. Estimates (y) represented by a first number (a+b) of bits are calculated, and modified estimates (y') represented by a second number (c) of bits provided therefrom, the second number being lower than the first number. An amplitude value is calculated for each estimate (y), and an averaged amplitude value calculated for a number of amplitude values. A scaling factor (s) is calculated from the averaged amplitude value, and scaled estimates generated in dependence of the scaling factor. The scaling factor is used for a number of scaled estimates corresponding to the number of amplitude values for which the averaged amplitude value was calculated. Thus a better scaling factor is provided for most channel cases, which can still be calculated with the limited computational resources of a terminal for such networks.

Abstract translation: 通过通信网络的传输信道发送的编码数字数据符号在接收机中被接收。 计算由第一数字（a + b）表示的估计（y），并且由由其提供的第二数量（c）表示的修改估计（y'），第二数目低于第一数目。 对于每个估计（y）计算振幅值，并且对于振幅值的数量计算的平均振幅值。 根据平均振幅值计算缩放因子，并根据缩放因子生成缩放估计值。 缩放因子用于与计算平均振幅值的振幅值的数量相对应的多个缩放估计。 因此，为大多数信道情况提供了更好的缩放因子，这仍然可以用这种网络的终端的有限的计算资源来计算。

公开(公告)号：WO2006014132A3

公开(公告)日：2006-05-11

申请号：PCT/SE2005001172

申请日：2005-07-19

Applicant: ERICSSON TELEFON AB L M

Inventor： GRANT STEPHEN J ,  MOLNAR KARL J

IPC: H04B1/69 ,  H04L1/06 ,  H04L27/01

CPC classification number: H04B1/712 ,  H04B1/71057 ,  H04B7/02 ,  H04B7/0848 ,  H04B2201/709727

Abstract: A receiver includes a receiver circuit that decodes multiple signals of interest contained in a composite receive signal. The receiver comprises at least one Generalized RAKE combining circuit and a joint demodulation circuit and generates a detected signal at an output. The joint demodulation circuit contains a reduced search soft value generator circuit and generates soft bit values that represent coded bits received from the transmitter.

Abstract translation: 一个接收机包括一个接收机电路，该接收机电路解码复合接收信号中包含的感兴趣的多个信号。 接收机包括至少一个通用RAKE组合电路和联合解调电路，并在输出端产生检测信号。 联合解调电路包含缩减搜索软值生成器电路，并生成表示从发送器接收的编码比特的软比特值。

公开(公告)号：WO2005125075A1

公开(公告)日：2005-12-29

申请号：PCT/EP2005/006268

申请日：2005-06-10

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON ,  WALLEN, Anders

Inventor： WALLEN, Anders

IPC: H04L1/20

CPC classification number: H04B1/10 ,  H04B2201/709727 ,  H04L1/20 ,  H04L2027/0065

Abstract: A receiver circuit provides improved noise estimation processing by at least partially removing receiver frequency error bias. An initial noise estimate is compensated using an error term based on the observed receiver frequency error, and the resulting compensated noise estimate can be used to improve other signal processing in the receiver. For example, the receiver may use compensated noise estimates to generate signal quality estimates, e.g., Signal-to-Interference (SIR) estimates, having improved accuracy. Additionally, or alternatively, the receiver may use the compensated noise estimates to generate RAKE combining weights having improved noise suppression characteristics. In an exemplary embodiment, the initial noise estimate is a noise correlation matrix generated from a received reference signal, e.g., pilot symbols, and the error term is an error matrix directly generated using the observed receiver frequency error and channel estimates taken from the reference signal.

Abstract translation: 接收机电路通过至少部分地去除接收机频率误差偏差来提供改进的噪声估计处理。 使用基于观察到的接收机频率误差的误差项来补偿初始噪声估计，并且所得到的补偿噪声估计可以用于改善接收机中的其他信号处理。 例如，接收机可以使用经补偿的噪声估计来产生具有提高的精度的信号质量估计，例如信号干扰（SIR）估计。 另外或替代地，接收机可以使用经补偿的噪声估计来生成具有改进的噪声抑制特性的RAKE组合权重。 在示例性实施例中，初始噪声估计是从接收的参考信号（例如，导频符号）产生的噪声相关矩阵，并且误差项是使用观测到的接收机频率误差和从参考信号获取的信道估计直接生成的误差矩阵 。

公开(公告)号：WO2005096536A1

公开(公告)日：2005-10-13

申请号：PCT/EP2005/000796

申请日：2005-01-27

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  JONSSON, Elias

Inventor： JONSSON, Elias

IPC: H04L1/20

CPC classification number: H04B1/712 ,  H04B1/7103 ,  H04B2201/709727

Abstract: A processing circuit and method generate signal quality estimates based on scaling measured inter-symbol interference (ISI) in a received signal according to a cancellation metric corresponding to ISI cancellation performance of the receiver. By accounting for ISI cancellation performance of the receiver based on a simple scaling metric, accurate received signal quality measurements are obtained in a manner that accounts for un-cancelled ISI in the received signal without requiring use of potentially complex multipath combining weight calculations in the signal quality calculation. Signal quality estimation results may be used for sending corresponding Channel Quality Indicators, communication link transmit power control commands, etc. In some embodiments, the cancellation metric is maintained as a dynamic value based on measured ISI cancellation performance, while in other embodiments the cancellation metric comprises a pre-configured value stored in memory, for example.

Abstract translation: 处理电路和方法根据对应于接收机的ISI消除性能的消除度量，基于接收信号中的测量的符号间干扰（ISI）来生成信号质量估计。 通过基于简单的缩放度量来考虑接收机的ISI取消性能，以接收到的信号中考虑未取消的ISI的方式获得准确的接收信号质量测量，而不需要在信号中使用潜在的复数多径组合权重计算 质量计算。 信号质量估计结果可以用于发送相应的信道质量指示符，通信链路发射功率控制命令等。在一些实施例中，基于所测量的ISI消除性能将消除度量维持为动态值，而在其它实施例中，消除度量 包括例如存储在存储器中的预配置值。