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41. 发明授权

US09148234B2 Technique and test signal for determining signal path properites 有权
标题翻译：用于确定信号路径属性的技术和测试信号
公开(公告)号：US09148234B2
公开(公告)日：2015-09-29
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 , H04B3/46 , H04L1/24 , H04L27/38 , H04B17/21 , H04B17/309 , H04L27/26 , H04B17/10 , H04B17/20
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）。

42. 发明授权

US09112450B2 Frequency translation filter apparatus and method 有权
标题翻译：变频滤波装置及方法
公开(公告)号：US09112450B2
公开(公告)日：2015-08-18
申请号：US13983079
申请日：2012-02-08
申请人： Lars Sundström , Sven Mattisson
发明人： Lars Sundström , Sven Mattisson
IPC分类号： H04B1/16 , H03D7/16
CPC分类号： H03D7/16 , H03D7/166 , H03H19/002 , H03H19/008
摘要： A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 comprises a frequency dependent load impedance, the filter having band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.
摘要翻译：频率转换滤波器500被配置为接收包括第一和第二非连续载波或非连续频率范围的射频（RF）信号501。频率转换滤波器包括混频器503，其被配置为将在第一输入上接收的RF信号501与在第二输入端接收的本地振荡器（LO）信号505进行混频。滤波器507包括频率相关负载阻抗，滤波器具有带通特性，当使用混频器503进行频率转换时，该频带特性包含对应于第一和第二非连续载波或非连续频率范围的第一和第二通带。第一和第二通带以本地振荡器频率为中心。

43. 发明申请

US20150110161A1 Mixer Unit 有权
标题翻译：搅拌机
公开(公告)号：US20150110161A1
公开(公告)日：2015-04-23
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： H04B1/405 , 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。

44. 发明授权

US08798177B2 Inter-carrier bandwidth control for mitigating IQ imbalance 有权
标题翻译：用于减轻IQ不平衡的载波间带宽控制
公开(公告)号：US08798177B2
公开(公告)日：2014-08-05
申请号：US13098954
申请日：2011-05-02
申请人： Chester Park , Lars Sundström , Jim Svensson
发明人： Chester Park , Lars Sundström , Jim Svensson
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/3863 , H04B1/28 , H04B1/30 , H04B17/21 , H04L5/001 , H04L27/2634 , H04L27/2647
摘要： Digital IQ imbalance estimation and compensation is facilitated by shaping the frequency response of receiver branches. In particular, in a multi-carrier receiver, the frequency response of signal processing elements in at least one receiver branch is set to not fully attenuate received signals in a frequency band of interest. The frequency band of interest is greater than the carrier bandwidth of the received signal processed by that receiver branch. In some embodiments, the received signal is not attenuated, and adjacent interfering signals are partially attenuated. This allows information regarding the interfering signals to appear in an IQ imbalance-induced, inter-carrier image of the signals in anther receiver branch, facilitating digital estimation and compensation of IQ imbalance.
摘要翻译：通过对接收机分支的频率响应进行整形，便于数字IQ不平衡估计和补偿。特别地，在多载波接收机中，将至少一个接收机支路中的信号处理元件的频率响应设置为不完全衰减感兴趣频带中的接收信号。感兴趣的频带大于由该接收器分支处理的接收信号的载波带宽。在一些实施例中，接收的信号不被衰减，并且相邻的干扰信号被部分衰减。这允许关于干扰信号的信息出现在IQ不平衡引起的另一个接收机分支中信号的载波间图像中，有助于IQ失衡的数字估计和补偿。

45. 发明申请

US20140030997A1 Frequency Translation Filter Apparatus and Method 有权
标题翻译：频率转换滤波装置及方法
公开(公告)号：US20140030997A1
公开(公告)日：2014-01-30
申请号：US13983079
申请日：2012-02-08
申请人： Lars Sundström , Sven Mattisson
发明人： Lars Sundström , Sven Mattisson
IPC分类号： H03D7/16
CPC分类号： H03D7/16 , H03D7/166 , H03H19/002 , H03H19/008
摘要： A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 comprises a frequency dependent load impedance, the filter having band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.
摘要翻译：频率转换滤波器500被配置为接收包括第一和第二非连续载波或非连续频率范围的射频（RF）信号501。频率转换滤波器包括混频器503，其被配置为将在第一输入上接收的RF信号501与在第二输入端接收的本地振荡器（LO）信号505进行混频。滤波器507包括频率相关负载阻抗，滤波器具有带通特性，当使用混频器503进行频率转换时，滤波器包含对应于第一和第二非连续载波或非连续频率范围的第一和第二通带。第一和第二通带以本地振荡器频率为中心。

46. 发明申请

US20130279399A1 SELF-INTERFERENCE SUPPRESSION CONTROL FOR A RELAY NODE 有权
标题翻译：用于继电器节点的自干扰抑制控制
公开(公告)号：US20130279399A1
公开(公告)日：2013-10-24
申请号：US13880529
申请日：2011-09-22
申请人： Leif Wilhelmsson , Lars Sundström
发明人： Leif Wilhelmsson , Lars Sundström
IPC分类号： H04B7/155
CPC分类号： H04B7/15585 , H04B7/155 , H04B15/00
摘要： A technique for controlling suppression of self-interference in a relay node configured to transmit and receive simultaneously using the same frequency channel or using proximate frequency channels is provided. A method implementation of this technique comprises the steps of actively cancelling a signal transmitted from the relay node that leaks back into a receiver of the relay node to suppress self-interference, determining whether an increase of an amount of self-interference suppression is needed or whether self-interference suppression can be decreased, and increasing or decreasing, depending on the result of the determination, at least one of the transmit power of the signal transmitted from the relay node and the receive power of the relay node.
摘要翻译：提供了一种用于控制被配置为使用相同频率信道或使用接近频率信道同时发送和接收的中继节点中的自干扰抑制的技术。该技术的方法实现包括以下步骤：主动地消除从中继节点发送的信号，该信号泄漏到中继节点的接收机中以抑制自干扰，确定是否需要增加自干扰抑制量，取决于确定结果，能够减少自干扰抑制，以及根据确定结果增加或减少从中继节点发送的信号的发射功率和中继节点的接收功率中的至少一个。

47. 发明授权

US08219056B2 Radio environment scanner 有权
标题翻译：无线电环境扫描仪
公开(公告)号：US08219056B2
公开(公告)日：2012-07-10
申请号：US12553710
申请日：2009-09-03
申请人： Lars Sundström , Thomas Olsson , Leif Wilhelmsson , Chester Park
发明人： Lars Sundström , Thomas Olsson , Leif Wilhelmsson , Chester Park
IPC分类号： H04B17/00 , H04K3/00
CPC分类号： H04W24/08 , H04B17/318 , H04B17/382
摘要： A device may include a measurement receiver, a communication receiver, and a transmitter. The measurement receiver may include a receiver (RX) down-conversion component to receive an amplified signal from a low-noise amplifier of the communication receiver, selectively receive a signal from a first local oscillator associated with the communication receiver or a second local oscillator associated with the transmitter, and down-convert the amplified signal to baseband using the received signal from the first local oscillator or the second local oscillator. The measurement receiver may further include a delta-sigma analog-to-digital converter (ADC) to provide low quantization noise only for a particular frequency range to be measured, and a control component to configure the delta-sigma ADC to provide the low quantization noise at the particular frequency range.
摘要翻译：设备可以包括测量接收器，通信接收器和发射器。测量接收机可以包括接收器（RX）下变频部件，以从通信接收机的低噪声放大器接收放大的信号，选择性地接收来自与通信接收器相关联的第一本地振荡器的信号或与第二本地振荡器相关联的信号并且使用来自第一本地振荡器或第二本地振荡器的接收信号将放大的信号下变频到基带。测量接收机还可以包括仅用于要测量的特定频率范围的低量化噪声的delta-sigma模数转换器（ADC），以及配置Δ-ΣADC以提供低量化的控制部件在特定频率范围内的噪声。

48. 发明申请

US20110268167A1 Method and Apparatus for Signal Peak-to-Average Ratio Reduction 有权
标题翻译：信号峰均比降低的方法和装置
公开(公告)号：US20110268167A1
公开(公告)日：2011-11-03
申请号：US13180828
申请日：2011-07-12
申请人： Lars Sundström
发明人： Lars Sundström
IPC分类号： H04W24/00
CPC分类号： H04L27/2624 , H04B2201/70706
摘要： A method and apparatus taught herein reduce the peak-to-average ratio (PAR) of a complex-valued signal based on detecting peaks in the signal that are above a peak threshold, characterizing the detected peaks in Cartesian coordinates, generating cancellation pulses in Cartesian coordinates based on the detected peak characterizations. PAR reduction processing continues with canceling the detected peaks by combining the cancellation pulses with a correspondingly delayed version of the signal. Advantageously, peak detection may be performed in polar form using a computationally efficient peak detection algorithm that avoids calculation of the I and Q peak waveforms unless a signal peak beyond a defined threshold is present. In one or more embodiments, the generation and use of asymmetric and/or shaped cancellation pulses offers further performance advantages.
摘要翻译：本文教导的方法和装置基于检测到高于峰值阈值的信号中的峰值来表示复数值信号的峰值平均比（PAR），表征笛卡尔坐标中检测到的峰值，产生笛卡尔坐标中的取消脉冲基于检测到的峰值表征的坐标。通过将消除脉冲与信号的相应延迟版本组合，PAR减小处理继续消除检测到的峰值。有利地，峰值检测可以使用计算上有效的峰值检测算法以极性形式进行，其避免计算I和Q峰值波形，除非存在超出限定阈值的信号峰值。在一个或多个实施例中，不对称和/或成形的取消脉冲的产生和使用提供了进一步的性能优点。

49. 发明申请

US20110051849A1 RADIO-RECEIVER CIRCUIT 有权
标题翻译：无线电接收机电路
公开(公告)号：US20110051849A1
公开(公告)日：2011-03-03
申请号：US12991841
申请日：2009-05-06
申请人： Bengt Lindoff , Filip Oredsson , Tony Petersson , Lars Sundström
发明人： Bengt Lindoff , Filip Oredsson , Tony Petersson , Lars Sundström
IPC分类号： H04L27/00
CPC分类号： H04W52/0251 , H04B1/123 , H04L5/0007 , H04L25/03006 , H04L27/2647
摘要： A radio-receiver circuit having an analog-to-digital conversion unit. The analog-to-digital conversion unit comprises an analog-to-digital converter (ADC) and a filter operatively connected to an input terminal of the ADC in a receive path of the radio-receiver circuit. The radio-receiver circuit further comprises a control unit adapted to receive control data and determine, based on the control data, a frequency band in which data is to be transmitted to the radio-receiver circuit during a subsequent time interval. Furthermore, the control unit is operative to adapt at least one frequency characteristic of the analog-to-digital conversion unit to the determined frequency band for receiving said data transmitted in said subsequent time interval.
摘要翻译：一种具有模拟 - 数字转换单元的无线电 - 接收机电路。模数转换单元包括在无线电 - 接收机电路的接收路径中可操作地连接到ADC的输入端的模数转换器（ADC）和滤波器。无线电 - 接收机电路还包括控制单元，其适于接收控制数据，并且基于控制数据确定在随后的时间间隔期间将数据发送到无线电接收机电路的频带。此外，控制单元可操作以将模数转换单元的至少一个频率特性适配到所确定的频带，用于接收在所述后续时间间隔中发送的所述数据。

50. 发明申请

US20100210272A1 Multi-Band Aggregated Spectrum Receiver Employing Frequency Source Reuse 有权
标题翻译：采用频率源复用的多频段聚合频谱接收机
公开(公告)号：US20100210272A1
公开(公告)日：2010-08-19
申请号：US12611749
申请日：2009-11-03
申请人： Lars Sundström , Stefan Andersson , Roland Strandberg
发明人： Lars Sundström , Stefan Andersson , Roland Strandberg
IPC分类号： H04W72/00
CPC分类号： H04B1/0082
摘要： Efficient carrier aggregation is enabled in a receiver employing a single frequency source, and dividing the frequency source by different frequency dividing factors to generate two or more RF LO frequencies. Received signals are down-converted to intermediate frequencies by mixing with the respective RF LO frequencies. By utilizing only a single high frequency source, embodiments of the present invention avoid spurious and injection locking issues that arise when integrating two or more frequency sources, and additionally reduce power consumption as compared to a multiple frequency source solution.
摘要翻译：在采用单个频率源的接收机中启用有效的载波聚合，并且通过不同的分频因子来划分频率源以产生两个或更多个RF LO频率。接收的信号通过与相应的RF LO频率混合而被下变频到中频。通过仅利用单个高频源，本发明的实施例避免了在集成两个或多个频率源时产生的杂散和注入锁定问题，并且与多频率源解决方案相比，另外降低功耗。

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