公开(公告)号：US07782987B2

公开(公告)日：2010-08-24

申请号：US10799322

申请日：2004-03-12

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L5/12

CPC classification number: H04L1/20 ,  H04B2201/709727 ,  H04L1/0026 ,  H04L25/03006

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符号间干扰（ISI）的缩放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，基于测量的ISI消除性能将消除度量维持为动态值，而在其他实施例中，消除度量 包括例如存储在存储器中的预配置值。

公开(公告)号：US07649967B2

公开(公告)日：2010-01-19

申请号：US10530370

申请日：2003-08-20

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H03D1/04

CPC classification number: H04W52/56 ,  H04B1/7097 ,  H04B7/0669 ,  H04B17/336 ,  H04W52/16 ,  H04W52/225 ,  H04W52/24 ,  H04W52/42

Abstract: A method and device (100) for estimating a signal to interference ratio (SIR) of a signal transmitted from a first unit and to a remotely located second unit in a Wideband Code Division Multiple Access (WCDMA) wireless communication system. The transmitted TPC (Transmit Power Control) is checked and upon this result the SIR is determined. The checking of the TPC includes the estimation of the previous and the present power using a weighted contribution of the pilots and the data.

Abstract translation: 一种用于估计在宽带码分多址（WCDMA）无线通信系统中从第一单元和远程定位的第二单元发送的信号的信号干扰比（SIR）的方法和设备（100）。 检查发送的TPC（发送功率控制），并根据该结果确定SIR。 TPC的检查包括使用飞行员和数据的加权贡献对先前和当前功率的估计。

公开(公告)号：US20090075647A1

公开(公告)日：2009-03-19

申请号：US11856233

申请日：2007-09-17

Applicant: Bengt Lindoff ,  Elias Jonsson

Inventor： Bengt Lindoff ,  Elias Jonsson

IPC: H04Q7/20 ,  H04B17/00

CPC classification number: H04B17/382 ,  H04B17/26 ,  H04B17/318 ,  H04W36/30

Abstract: The method and apparatus described herein uses variable length snapshot periods to determine signal strength measurements. A mobile station determines the measurement bandwidth associated with a base station, and sets the snapshot period based on the measurement bandwidth. The mobile station determines the signal strength of serving and neighboring cells during snapshot periods. Such signal strength measurements may be used to assist and/or direct handover operations.

Abstract translation: 本文描述的方法和装置使用可变长度的快照周期来确定信号强度测量。 移动台确定与基站相关联的测量带宽，并根据测量带宽设置快照周期。 移动台在快照期间确定服务和相邻小区的信号强度。 这种信号强度测量可用于辅助和/或直接切换操作。

公开(公告)号：US20080298510A1

公开(公告)日：2008-12-04

申请号：US11755887

申请日：2007-05-31

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L25/067 ,  H04L27/38

Abstract: Methods and receiver circuits for determining and employing decision boundary estimates for use in de-mapping QAM symbols in an OFDM receiver are disclosed. The disclosed methods efficiently use memory resources, while taking account of the frequency-selective and time-varying nature of the signal propagation. An OFDM receiver calculates a decision boundary estimate using QAM-modulated symbols selected from a group of OFDM tones and determines soft bit values for symbols selected from an adjacent tone using the decision boundary estimate. The receiver updates the decision boundary estimate using the symbols from the adjacent tone and determines soft bit values for symbols selected from a next-adjacent tone using the updated decision boundary estimate. Once the decision boundary estimate has been updated and the soft bit values have been determined for each tone, the symbol data for that tone may be discarded.

Abstract translation: 公开了用于确定和使用用于解调映射OFDM接收器中的QAM符号的判定边界估计的方法和接收机电路。 所公开的方法在考虑信号传播的频率选择性和时变性的同时有效地使用存储器资源。 OFDM接收器使用从一组OFDM音调组中选出的QAM调制符号来计算判定边界估计，并使用判定边界估计来确定从相邻音调中选择的符号的软比特值。 接收器使用来自相邻音调的符号来更新判定边界估计，并使用更新的判定边界估计来确定从下一相邻音调中选择的符号的软比特值。 一旦更新了判定边界估计并且已经为每个音调确定了软比特值，则可以丢弃该音调的符号数据。

公开(公告)号：US20080013603A1

公开(公告)日：2008-01-17

申请号：US11858548

申请日：2007-09-20

Applicant: Andreas Cedergren ,  Elias Jonsson

Inventor： Andreas Cedergren ,  Elias Jonsson

IPC: H04B1/00

CPC classification number: H04B1/7115 ,  H04B1/712

Abstract: A method and a receiver for receiving coded digital data symbols sent from a transmitter through a transmission channel of a communications network is adapted to calculate first symbol estimates (y) of sent data symbols from the received data symbols, each of the first symbol estimates (y) having a first bitwidth (a+b), provide a scaling factor (s) and using the scaling factor (s) to scale the first symbol estimates, truncate the scaled symbol estimates (ysc) to a second, lower bitwidth (c) and thereby providing second symbol estimates (yt)

Abstract translation: 一种用于接收通过通信网络的传输信道从发射机发送的编码数字数据符号的方法和接收机，适于从所接收的数据符号中计算所发送的数据符号的第一符号估计（y），每个第一符号估计（ y）具有第一位宽（a + b），提供缩放因子并使用缩放因子来缩放第一符号估计，截断缩放的符号估计（y> sc 到第二个较低的位宽（c），从而提供第二符号估计（y∈T）

公开(公告)号：US20080008228A1

公开(公告)日：2008-01-10

申请号：US11721582

申请日：2005-10-21

Applicant: Andreas Cedergren ,  Elias Jonsson

Inventor： Andreas Cedergren ,  Elias Jonsson

IPC: H04B1/707

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 form the averaged amplitude value, and scaled estimates generated in dependence of die 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，并且针对振幅值的数量计算平均振幅值。 根据平均振幅值计算缩放因子，并根据缩放因子产生缩放估计。 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：US20070195864A1

公开(公告)日：2007-08-23

申请号：US10595115

申请日：2004-07-10

Applicant: Elias Jonsson ,  Roger Persson

Inventor： Elias Jonsson ,  Roger Persson

IPC: H04B1/00

CPC classification number: H04B1/70754 ,  H04B1/70735 ,  H04B1/7113 ,  H04B1/7117 ,  H04B2201/70702

Abstract: Multipath components of signals transmitted through time-varying digital radio channels are received with individual delays, and signals through a given channel comprise a code identifying that channel. A delay profile indicating a magnitude (Y) for delay values in a search window is calculated repetitively for known channels; the delays of multipath components for known channels estimated; a signal strength indicator calculated; and a search for new multipath components not already estimated performed at regular time intervals. When a new multipath component is found, its identification code is compared to the codes of the known channels. If the code of the new component is identical to the code of a known channel, a delay profile and a signal strength indicator is calculated for a window transposed to include the new multipath component. In this way as many multipath components as possible are included in the search window for a new cell.

Abstract translation: 通过时变数字无线电信道发送的信号的多径分量被接收具有单独的延迟，并且通过给定信道的信号包括识别该信道的码。 对已知通道重复地计算指示搜索窗口中的延迟值的幅度（Y）的延迟分布; 估计已知信道的多路径分量的延迟; 计算信号强度指标; 并搜索未定时执行的新的多径分量。 当找到新的多径分量时，将其识别码与已知信道的码进行比较。 如果新组件的代码与已知通道的代码相同，则为转置以包括新的多路径分量的窗口计算延迟分布和信号强度指示符。 以这种方式，尽可能多的多径分量被包括在新单元的搜索窗口中。

公开(公告)号：US08837556B2

公开(公告)日：2014-09-16

申请号：US13452652

申请日：2012-04-20

Applicant: Elias Jonsson ,  Kazuyoshi Uesaka

Inventor： Elias Jonsson ,  Kazuyoshi Uesaka

IPC: H04B1/00

CPC classification number: H04L25/0226 ,  H04L5/0051

Abstract: In one aspect, the present invention provides for blindly detecting the presence of one or more secondary pilot signals that are not being used to serve a communication apparatus, such as a User Equipment (UE). Among its several advantages, the approach to blind detection taught herein provides robust detection performance, yet it requires relatively few receiver resources. The contemplated apparatus, in at least one example embodiment, uses its blind detection of secondary pilot signal(s) to trigger suppression of secondary pilot interference, for improved reception performance. In a particular, non-limiting example, the apparatus operates in an HSDPA-MIMO network in a non-MIMO mode and blindly detects secondary pilot signal energy associated with the supporting network providing MIMO service to nearby equipment.

Abstract translation: 在一个方面，本发明提供盲目检测不用于服务诸如用户设备（UE）的通信设备的一个或多个辅助导频信号的存在。 在其几个优点中，本文教导的盲检测方法提供了鲁棒的检测性能，但它需要相对较少的接收器资源。 在至少一个示例性实施例中，所设想的装置使用其二次导频信号的盲检测来触发二次导频干扰的抑制，以改善接收性能。 在特定的非限制性示例中，设备以非MIMO模式在HSDPA-MIMO网络中操作，并且盲目地检测与向附近设备提供MIMO服务的支持网络相关联的辅助导频信号能量。

公开(公告)号：US08699546B2

公开(公告)日：2014-04-15

申请号：US13452399

申请日：2012-04-20

Applicant: Elias Jonsson ,  Kazuyoshi Uesaka

Inventor： Elias Jonsson ,  Kazuyoshi Uesaka

IPC: H04B1/00

CPC classification number: H04B1/7115 ,  H04B1/7107

Abstract: Techniques are disclosed for determining which channelization codes are used for an interfering HS-PDSCH transmission without knowing whether a neighboring UE targeted by that transmission has had its 64QAM capability activated by higher layer signaling. The average amplitude is measured for each of several possible groups of channelization codes for each of one or more nearby UEs that might be the targets of interfering HS-PDSCH messages. Testing whether the amplitude is approximately the same across the codes in a possible combination of channelization codes yields a metric value that indicates whether that particular combination of codes is likely to be transmitted to a given UE. A second metric that detects the most likely modulation for possible groups of channelization codes is also calculated. The metrics are combined to determine which combination of channelization codes and modulation scheme is most likely being used for addressing the neighboring UE.

Abstract translation: 公开了用于确定哪些信道化码用于干扰HS-PDSCH传输的技术，而不知道该传输所针对的相邻UE是否具有由较高层信令激活的其64QAM能力。 对于可能是干扰HS-PDSCH消息的目标的一个或多个附近的UE中的每一个，测量平均幅度中的每一个信道化码的每一个。 在信道化码的可能组合中，测试码之间的振幅是否大致相同，产生指示代码的特定组合是否可能被发送给给定UE的度量值。 还计算了针对可能的信道化码组可能调制的第二个度量。 组合度量以确定信道化码和调制方案的哪个组合最可能用于寻址相邻UE。

公开(公告)号：US08576960B2

公开(公告)日：2013-11-05

申请号：US12628341

申请日：2009-12-01

Applicant: Douglas A. Cairns ,  Gregory E. Bottomley ,  Elias Jonsson

Inventor： Douglas A. Cairns ,  Gregory E. Bottomley ,  Elias Jonsson

IPC: H04L27/06 ,  H04L23/02

CPC classification number: H04L25/03006 ,  H04B1/71057 ,  H04B2201/709727 ,  H04L25/03178 ,  H04L25/03203 ,  H04L25/03331 ,  H04L2025/03426

Abstract: The computation of code-specific channel matrices for an Assisted Maximum Likelihood Detection (AMLD) receiver comprises separately computing high rate matrices that change each symbol period, and a low rate matrix that is substantially constant over a plurality of symbol periods. The high and low rate matrices are combined to generate a code-specific channel matrix for each receiver stage. The high rate matrices include scrambling and spreading code information, and the low rate matrices include information on the net channel response and combining weights. The low rate matrices are efficiently computed by a linear convolution in the frequency domain of the net channel response and combining weights (with zero padding to avoid circular convolution), then transforming the convolution to the time domain and extracting matrix elements. Where the combining weights are constant across stages, a common code-specific channel matrix may be computed and used in multiple AMLD receiver stages.

Abstract translation: 用于辅助最大似然检测（AMLD）接收机的代码特定信道矩阵的计算包括分别计算改变每个符号周期的高速率矩阵和在多个符号周期上基本上恒定的低速率矩阵。 组合高速和低速率矩阵以为每个接收机级生成代码特定的信道矩阵。 高速率矩阵包括加扰和扩展码信息，低速率矩阵包括关于网络信道响应和组合权重的信息。 低速率矩阵通过网络通道响应的频域中的线性卷积和组合权重（零填充以避免循环卷积）有效地计算，然后将卷积变换到时域并提取矩阵元素。 在组合权重跨越阶段恒定的情况下，可以在多个AMLD接收机阶段中计算和使用公共的特定码通道矩阵。