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21. 发明申请

US20120087443A1 Event Handling in a Radio Circuit 有权
标题翻译：无线电电路中的事件处理
公开(公告)号：US20120087443A1
公开(公告)日：2012-04-12
申请号：US12934157
申请日：2009-03-23
申请人： Thomas Olsson , Lars Sundström
发明人： Thomas Olsson , Lars Sundström
IPC分类号： H04L27/00
CPC分类号： H04L25/02 , G06F9/4881 , H04B1/40
摘要： A radio circuit comprises an interface unit for communicating data and commands over a communication link between a digital baseband circuit and the radio circuit. Furthermore, the radio circuit comprises an event-scheduling unit, a local time-reference unit, a synchronization unit, and an execution-control unit. The event-scheduling unit is arranged to receive event-request commands specifying an event to be executed in the radio circuit and a time instant at which the specified event is to be executed, from the digital baseband circuit. Furthermore, the event-scheduling unit is arranged to, in response to receiving an event request-command, schedule the specified event to be executed on the specified time instant. The execution-control unit is arranged to issue execution of each scheduled event at the scheduled time instant based on time information from the local time reference unit. The local time-reference unit is synchronized with a time-reference unit in the digital baseband circuit in response to a synchronization command, from the synchronization unit.
摘要翻译：无线电电路包括用于通过数字基带电路和无线电电路之间的通信链路传送数据和命令的接口单元。此外，无线电电路包括事件调度单元，本地时基参考单元，同步单元和执行控制单元。事件调度单元被配置为从数字基带电路接收指定要在无线电电路中执行的事件的事件请求命令和要执行指定事件的时刻。此外，事件调度单元被配置为响应于接收到事件请求命令，在指定的时刻调度要执行的指定事件。执行控制单元被配置为基于来自本地时间基准单元的时间信息在预定时刻发布每个调度事件的执行。响应于来自同步单元的同步命令，本地时基参考单元与数字基带电路中的时基参考单元同步。

22. 发明申请

US20110222638A1 FREQUENCY-DEPENDENT IQ IMBALANCE ESTIMATION 有权
标题翻译：频率依赖智商不平等估计
公开(公告)号：US20110222638A1
公开(公告)日：2011-09-15
申请号：US12722666
申请日：2010-03-12
申请人： Chester Park , Leif Wilhelmsson , Lars Sundström
发明人： Chester Park , Leif Wilhelmsson , Lars Sundström
IPC分类号： H04B1/10
CPC分类号： H04L27/3863
摘要： RF impairment parameters, including frequency-dependent IQ imbalance, are estimated in a wideband received signal on a per-sub-band (or per sub-band pair) basis. In one embodiment, block-type pilot signals are received, such as on SCH, and IQ imbalance and carrier frequency offset are estimated from the block-type pilot signals. The block-type pilot signals may be received in only one sub-band. Data and comb-type pilot signals are then received on all sub-bands. Phase noise and channel coefficients are estimated for the first sub-band, based on the IQ imbalance and carrier frequency offset estimates. IQ imbalance is then successively estimated, on a per-sub-band (or per sub-band pair) basis, based on the comb-type pilot signals, the previously estimated carrier frequency offset estimate, and the phase noise and IQ imbalance estimates from prior sub-bands (or pairs). This may comprise iterative estimation based on decision feedback.
摘要翻译：在每个子带（或每个子带对）的宽带接收信号中估计RF损伤参数，包括频率相关的IQ不平衡。在一个实施例中，诸如在SCH上接收块型导频信号，并且从块型导频信号估计IQ不平衡和载波频率偏移。块类型导频信号可以仅在一个子带中被接收。然后在所有子带上接收数据和梳状导频信号。基于IQ不平衡和载波频率偏移估计，针对第一子带估计相位噪声和信道系数。然后，基于梳状导频信号，先前估计的载波频率偏移估计和相位噪声和IQ不平衡估计，基于每个子带（或每个子带对）来逐次地估计IQ不平衡。先前的子带（或对）。这可以包括基于判决反馈的迭代估计。

23. 发明申请

US20110150122A1 Method for a Single Radio Aggregated Spectrum Receiver, Computer Program, Receiver, and Terminal 有权
标题翻译：单一无线电聚合频谱接收机，计算机程序，接收机和终端的方法
公开(公告)号：US20110150122A1
公开(公告)日：2011-06-23
申请号：US12992029
申请日：2009-05-12
申请人： Bengt Lindoff , Lars Sundström
发明人： Bengt Lindoff , Lars Sundström
IPC分类号： H04B1/10 , H04B15/00
CPC分类号： H04B1/1036 , H04B1/0003 , H04B1/005 , H04B1/1027 , H04B1/406 , H04W72/08
摘要： A method for a single radio aggregated spectrum receiver of a terminal arranged to operate in a radio network is disclosed. The method comprises receiving information from a network node of the radio network about frequency properties of an aggregated spectrum to be received; determining information about the aggregated spectrum comprising at least one of presence of blocking interferer(s) interspersed with, and pass bands within the aggregated spectrum; and providing filter(s) based on the determined information about the aggregated spectrum such that desired signals are passed and any blocking interferer(s) are attenuated. Corresponding computer program, receiver and terminal are also disclosed.
摘要翻译：公开了一种布置为在无线电网络中操作的终端的单个无线电聚合频谱接收机的方法。该方法包括从无线电网络的网络节点接收关于要接收的聚合频谱的频率属性的信息; 确定关于所述聚合频谱的信息，其包括散布在所述聚合频谱内的阻塞干扰源和通过频带中的至少一个; 以及基于所确定的关于聚集的频谱的信息来提供滤波器，使得期望的信号被传递并且任何阻塞的干扰源被衰减。还公开了相应的计算机程序，接收器和终端。

24. 发明申请

US20100296605A1 DETERMINING A LEVEL OF POWER REDUCTION FOR A TRANSMITTER 有权
标题翻译：确定发射机的功率水平
公开(公告)号：US20100296605A1
公开(公告)日：2010-11-25
申请号：US12521056
申请日：2007-12-19
申请人： Lars Sundström , Torgny Palenius
发明人： Lars Sundström , Torgny Palenius
IPC分类号： H04L25/03
CPC分类号： H04B1/0475 , H03G3/3042 , H04B1/04
摘要： A level of power reduction for a transmitter arranged to transmit signals modulated according to one of a number of modulation configurations via radio channels in a digital wireless communications system is estimated. Modulation dependent data comprising a term calculated from a third order product of a signal modulated according to a modulation configuration are provided, and a power reduction estimate for transmission of signals modulated according to said modulation configuration is calculated there from. The modulation dependent data are provided to comprise, in addition to the term calculated from a third order product, at least one term calculated from a higher order product. Further, transmitter dependent data are provided, and the estimate is calculated from said modulation dependent and transmitter dependent data. Thus a more accurate method of determining a power reduction is achieved, which also allows different operating conditions for the transmitter to be considered.
摘要翻译：估计用于经数字无线通信系统中经由无线电信道按照多个调制配置之一调制的信号的发射机的功率降低级别。提供了包括从根据调制配置调制的信号的三阶乘积计算的项的调制相关数据，并且从其计算根据所述调制配置调制的信号的发送功率降低估计。提供调制相关数据，除了从三阶乘积计算的项以外还包括从较高阶乘积计算的至少一个项。此外，提供与发射机相关的数据，并且根据所述调制相关和发射机相关数据计算估计。因此，实现了更准确的确定功率降低的方法，这也允许考虑发射机的不同操作条件。

25. 发明授权

US06593812B2 Automatic optimization of linearity for envelope feedback RF amplifier linearization 有权
公开(公告)号：US06593812B2
公开(公告)日：2003-07-15
申请号：US10125347
申请日：2002-04-19
申请人： Lars Sundström
发明人： Lars Sundström
IPC分类号： H03G320
CPC分类号： H03F1/3247 , H03F2200/102
摘要： An amplifier configuration and method of amplifying a signal are provided for automatic optimization of linearity of power amplifier input/output characteristics. The amplifier configuration utilizes a feedback loop that includes detecting envelopes of signals that are input and output from a power amplifier. The amplifier configuration includes an offset parameter determined in a second feedback loop that adapts to values for optimizing the linearity of the power amplifier output when input signal amplitudes are within a predetermined range of small signal values, thereby producing a substantially reduced distortion and thus linearized output over the entire input signal amplitude range.

26. 发明授权

US09462484B2 Reconfiguration of active component carrier set in multi-carrier wireless systems 有权
标题翻译：在多载波无线系统中重新配置有源分量载波集
公开(公告)号：US09462484B2
公开(公告)日：2016-10-04
申请号：US13498195
申请日：2009-12-22
申请人： Ghyslain Pelletier , Lars Sundström
发明人： Ghyslain Pelletier , Lars Sundström
IPC分类号： H04W24/02 , H04L5/00 , H04L27/26
CPC分类号： H04L27/2605 , H04L5/001 , H04L5/0037 , H04L5/0053 , H04L5/0064 , H04L5/0087 , H04L5/0096 , H04W24/02 , H04W76/28
摘要： In a multi-carrier wireless system, potential problems from reconfiguring mobile station resources to accommodate changes in component-carrier configuration are mitigated by inserting a guard period each time the configuration of component carriers changes, so that transceiver reconfiguration can be carried out without interfering with ongoing transmission. A base station is configured to transmit data to a mobile station according to a first configuration of two or more component carriers, to determine that a change of configuration to a second component-carrier configuration is required, and to signal the change of configuration to the mobile station, using the first configuration of component carriers. The base station then refrains from transmitting data to the mobile station during a pre-determined guard interval of at least one transmission-time interval subsequent to the signaling of the change of configuration. After the guard interval, data is transmitted to the mobile station according to the second component-carrier configuration.
摘要翻译：在多载波无线系统中，通过在每次分量载波的配置改变时插入保护周期来减轻重新配置移动台资源以适应分量载波配置变化的潜在问题，从而可以在不干扰的情况下执行收发机重新配置正在进行传输。基站被配置为根据两个或更多个分量载波的第一配置向移动站发送数据，以确定需要将配置改变为第二分量载波配置，并将配置的改变信号发送到移动台，使用分量载波的第一配置。然后，基站在配置改变的信令之后的至少一个传输时间间隔的预定的保护间隔期间禁止向移动站发送数据。在保护间隔之后，根据第二分量载波配置将数据发送到移动台。

27. 发明授权

US09264091B2 Mixer unit 有权
标题翻译：搅拌机单元
公开(公告)号：US09264091B2
公开(公告)日：2016-02-16
申请号：US14346103
申请日：2012-09-14
申请人： Martin Anderson , Henrik Sjöland , Lars Sundström , Jim Svensson
发明人： Martin Anderson , Henrik Sjöland , Lars Sundström , Jim Svensson
IPC分类号： H04B1/26 , H04B1/405 , H03D7/16 , H03D7/18 , H04L27/12
CPC分类号： H04B1/405 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D7/18 , H04L27/12
摘要： A mixer unit (30) for frequency translating, based on an LO signal, an input signal having one or more input signal components is disclosed. The mixer unit has a signal processing path (50a-d, 60a-d) from each Input terminal (32+, 32−) to each output terminal (34_I+, 34_I−, 34_Q+,34_Q−) of the mixer unit (30), The LO signal has an associated LO signal component (LO_Ia-d, LO_Qa-d) for each signal processing path. The mixer unit (30) comprises a plurality of mixer switches (70a-N) and a control unit (90). The control unit (90) is adapted to, for each signal processing path (50a-d, 60a-d), dynamically select an associated subset, in the following denoted active switch subset, of the plurality of mixer switches (70a-N) for operation in the signal processing path (50a-d, 60a˜d) such that which of the plurality of mixer switches (70a-N) belong to said active switch subset varies in time. At any instant in time, the union of all the active switch subsets is a strict subset, denoted combined active subset, of the plurality of mixer switches (70a-N). The control unit (90) is further adapted to activate only the mixer switches (70a-N) in said combined active subset by, for each mixer switch (70a-N) in the combined active subset, supplying the corresponding LO signal component to the mixer switch. A related radio receiver circuit (10), a related radio communication apparatus (1, 2), and a related method are also disclosed.
摘要翻译：公开了一种用于基于LO信号频率转换具有一个或多个输入信号分量的输入信号的混频器单元（30）。混合器单元具有从混合器单元（30）的每个输入端子（32+，32-）到混合器单元（30）的每个输出端子（34_I +，34_I-，34_Q +，34_Q-）的信号处理路径（50a-d，60a-d） LO信号具有针对每个信号处理路径的相关LO信号分量（LO_Ia-d，LO_Qa-d）。混频器单元（30）包括多个混频器开关（70a-N）和控制单元（90）。控制单元（90）适于对于每个信号处理路径（50a-d，60a-d），动态地选择多个混频器开关（70a-N）中的以下表示的有源开关子集中的相关子集，用于在信号处理路径（50a-d，60a〜d）中操作，使得多个混频器开关（70a-N）中的哪一个属于所述有源开关子集在时间上变化。在任何时刻，所有有源开关子集的并集是多个混频器开关（70a-N）中标明为组合有源子集的严格子集。控制单元（90）还适于仅通过组合有源子集中的每个混合器开关（70a-N）激活所述组合有效子集中的混频器开关（70a-N），将相应的LO信号分量提供给搅拌机开关还公开了一种相关无线电接收机电路（10），相关无线电通信装置（1,2）及相关方法。

28. 发明授权

US08942171B2 Technique for performing physical layer measurements 有权
公开(公告)号：US08942171B2
公开(公告)日：2015-01-27
申请号：US13512358
申请日：2010-11-25
申请人： Bengt Lindoff , Robert Baldemair , Lars Sundström
发明人： Bengt Lindoff , Robert Baldemair , Lars Sundström
IPC分类号： H04W4/00 , H04W24/10 , H04W72/08 , H04W72/12 , H04W36/00
CPC分类号： H04W24/08 , H04L25/03343 , H04W24/10 , H04W36/0088 , H04W72/082 , H04W72/1231
摘要： The present disclosure relates to a technique for performing physical layer measurements on a frequency resource relative to other frequency resources in a telecommunications system operable to communicate over multiple frequency resources. A method aspect of this technique includes determining that a mobile terminal is to perform a physical layer measurement with regard to a first frequency resource, determining if there is data to be communicated over one or more second frequency resource(s) within a time period wherein the first frequency resource is distinct from the second frequency resources: if it is determined that there is no data to be communicated over the second frequency resource(s) within the time period, performing the physical layer measurement on the first frequency resource and forming a quality measure of the first frequency resource based on the physical layer measurement; or if it is determined that there is data to be communicated over the second frequency resource(s) within the time period, modifying the physical layer measurement and forming a quality measure of the first frequency resource based on the modified physical layer measurement.

29. 发明申请

US20140148112A1 Technique and Test Signal for Determining Signal Path Properites 有权
标题翻译：用于确定信号路径自适应的技术和测试信号
公开(公告)号：US20140148112A1
公开(公告)日：2014-05-29
申请号：US13811674
申请日：2011-06-17
申请人： Lars Sundström , Jim Svensson , Leif Wilhelmsson
发明人： Lars Sundström , Jim Svensson , Leif Wilhelmsson
IPC分类号： H04B17/00
CPC分类号： H04B17/21 , H04B3/46 , H04B17/10 , H04B17/20 , H04B17/309 , H04L1/244 , H04L27/2647 , H04L27/3863
摘要： A test signal for determining a frequency-dependent or any other property of a receiver path is proposed. The test signal comprises, in a time domain representation, a sequence of discrete states that may be periodically repeated and that gives rise to a plurality of discrete tones in a frequency domain representation of the test signal. The test signal can be utilized for determining a frequency-dependent imbalance (e.g., an IQ imbalance) between different signal branches of a receiver or transmitter.
摘要翻译：提出了用于确定接收机路径的频率依赖性或任何其他属性的测试信号。测试信号在时域表示中包括可以周期性重复的离散状态序列，并且在测试信号的频域表示中产生多个离散音调。测试信号可用于确定接收器或发射器的不同信号分支之间的频率相关不平衡（例如，IQ不平衡）。

30. 发明授权

US08731500B2 Automatic gain control based on bandwidth and delay spread 有权
标题翻译：基于带宽和延迟扩展的自动增益控制
公开(公告)号：US08731500B2
公开(公告)日：2014-05-20
申请号：US12361578
申请日：2009-01-29
申请人： Leif Wilhelmsson , Jan Celander , Lars Sundström
发明人： Leif Wilhelmsson , Jan Celander , Lars Sundström
IPC分类号： H04B17/02
CPC分类号： H03G3/3078 , H03G3/3068
摘要： A gain control circuit adjusts the signal level of a received signal responsive to the bandwidth a received signal and/or the delay spread of the channel in which the signal has propagated. The bandwidth and delay spread are evaluated to estimate the amount of signal variation that is expected due to fast fading. Adjustments to the signal level are then made to avoid clipping while at the same time ensuring that the dynamic range of a receiver component is efficiently utilized.
摘要翻译：增益控制电路响应于接收信号的带宽和/或信号已经传播的信道的延迟扩展来调整接收信号的信号电平。评估带宽和延迟扩展以估计由于快速衰落所预期的信号变化量。然后进行对信号电平的调整，以避免削波，同时确保接收器组件的动态范围得到有效利用。

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