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1. 发明申请

US20110053539A1 RADIO ENVIRONMENT SCANNER 有权
标题翻译：无线环境扫描仪
公开(公告)号：US20110053539A1
公开(公告)日：2011-03-03
申请号：US12553710
申请日：2009-09-03
申请人： Lars SUNDSTROM , Thomas Olsson , Leif Wilhelmsson , Chester Park
发明人： Lars SUNDSTROM , Thomas Olsson , Leif Wilhelmsson , Chester Park
IPC分类号： H04B17/00
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，有选择地从与通信接收器相关联的第一本地振荡器或第二本地振荡器相关联地接收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。

2. 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。

3. 发明申请

US20140051441A1 Complex Intermediate Frequency Based Receiver Architecture 有权
标题翻译：复杂的基于中频的接收机架构
公开(公告)号：US20140051441A1
公开(公告)日：2014-02-20
申请号：US13983566
申请日：2012-01-25
申请人： Leif Wilhelmsson , Lars Sundstrom , Fenghao Mu
发明人： Leif Wilhelmsson , Lars Sundstrom , Fenghao Mu
IPC分类号： H04W36/30 , H04B17/00
CPC分类号： H04W36/30 , H03D7/18 , H03D2200/0045 , H04B17/327 , H04B17/336
摘要： The disclosure relates to a Complex Intermediate Frequency (CIF)-based receiver adapted to process a received signal comprising a signal component at a desired frequency and a signal component as an image frequency. The CIF-based receiver determines the power of the received signal by calibrating the receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency, introduces signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency, and determines the power of the signal component at the image frequency based on the amount of degradation.
摘要翻译：本公开涉及一种适用于处理包含期望频率的信号分量和信号分量的接收信号作为图像频率的基于复数中频（CIF）的接收机。基于CIF的接收机通过校准接收机来确定接收信号的功率，以使图像频率处的信号分量的功率最小化，以在期望的频率处干扰信号分量，引入来自图像频率的信号泄漏以故意降级以期望频率的信号分量的质量，并且基于退化量确定图像频率处的信号分量的功率。

4. 发明申请

US20130273834A1 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：US20130273834A1
公开(公告)日：2013-10-17
申请号：US13880533
申请日：2011-09-22
申请人： Lars Sundstrom , Leif Wilhelmsson
发明人： Lars Sundstrom , Leif Wilhelmsson
IPC分类号： H04B7/155 , H04B15/00
CPC分类号： H04B7/15585 , H04B7/155 , H04B15/00
摘要： A technique for self-interference suppression control for a relay node is provided. The relay node comprises a transmitter and a receiver, and is adapted to transmit and received simultaneously using the same frequency channel or using proximate frequency channels. The relay node further comprises an interference signal estimator having a first input adapted to receive a transmitter signal from the transmitter, a second input adapted to receive adaptation metric and an output adapted to output an estimated interference signal generated by the interference signal estimator based on the transmitter signal and the adaptation metric. A subtractor is coupled to the output of interference signal estimator and configured to subtract the estimated interference signal from a received signal in the receiver so as to actively cancel a signal transmitted from the relay node that leaks back into the receiver of the relay node to suppress self-interference.
摘要翻译：提供了一种用于中继节点的自干扰抑制控制的技术。中继节点包括发射机和接收机，并且适于使用相同的频道或使用接近的频率信道同时发射和接收。所述中继节点还包括干扰信号估计器，所述干扰信号估计器具有适于从所述发射机接收发射机信号的第一输入端，适于接收自适应度量的第二输入端和适于输出由干扰信号估计器产生的估计干扰信号的输出，发射机信号和适应度量。减法器耦合到干扰信号估计器的输出，并且被配置为从接收器中的接收信号中减去所估计的干扰信号，从而主动地消除从中继节点发送的信号，该信号泄漏回中继节点的接收机以抑制自我干扰

5. 发明申请

US20100189203A1 Automatic Gain Control Based on Bandwidth and Delay Spread 有权
标题翻译：基于带宽和延迟传播的自动增益控制
公开(公告)号：US20100189203A1
公开(公告)日：2010-07-29
申请号：US12361578
申请日：2009-01-29
申请人： Leif Wilhelmsson , Jan Celander , Lars Sundstrom
发明人： Leif Wilhelmsson , Jan Celander , Lars Sundstrom
IPC分类号： H04L27/08
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。

6. 发明授权

US09882628B2 Self-interference suppression control for a relay node 有权
公开(公告)号：US09882628B2
公开(公告)日：2018-01-30
申请号：US13880533
申请日：2011-09-22
申请人： Lars Sundstrom , Leif Wilhelmsson
发明人： Lars Sundstrom , Leif Wilhelmsson
IPC分类号： H04B7/15 , H04B7/155 , H04B15/00
CPC分类号： H04B7/15585 , H04B7/155 , H04B15/00
摘要： A technique for self-interference suppression control for a relay node is provided. The relay node comprises a transmitter and a receiver, and is adapted to transmit and received simultaneously using the same frequency channel or using proximate frequency channels. The relay node further comprises an interference signal estimator having a first input adapted to receive a transmitter signal from the transmitter, a second input adapted to receive adaptation metric and an output adapted to output an estimated interference signal generated by the interference signal estimator based on the transmitter signal and the adaptation metric. A subtractor is coupled to the output of interference signal estimator and configured to subtract the estimated interference signal from a received signal in the receiver so as to actively cancel a signal transmitted from the relay node that leaks back into the receiver of the relay node to suppress self-interference.

7. 发明申请

US20070230635A1 WIRELESS COMMUNICATION RECEPTION WITH COOPERATION BETWEEN AGC AND DIGITAL BASEBAND 审中-公开
标题翻译：无线通信接收AGC和数字基带之间的合作
公开(公告)号：US20070230635A1
公开(公告)日：2007-10-04
申请号：US11278527
申请日：2006-04-03
申请人： Leif Wilhelmsson , Jim Svensson , Lars Sundstrom
发明人： Leif Wilhelmsson , Jim Svensson , Lars Sundstrom
IPC分类号： H04L27/08 , H04K1/10
CPC分类号： H04L27/2647 , H03G3/3052 , H03G2201/103 , H03G2201/202 , H03G2201/302 , H04L25/0202 , H04L27/2607
摘要： In communication systems where the channel is expected to vary during a communication burst, gain adjustments during the communication burst can be implemented by automatic gain control (AGC) in the receiver, with minimal performance degradation. These gain adjustments are successfully accommodated by virtue of suitable information-sharing between an AGC unit and a digital baseband part. The digital baseband part can direct the AGC unit appropriately to ensure that gain adjustments are implemented during time intervals that do not carry substantive communication information (e.g., guard intervals). In receivers that perform channel estimation in the digital baseband part, the AGC unit supports channel estimation by informing the digital baseband part about the timing of the gain adjustment. The AGC unit can also support channel estimation by informing the digital baseband part about the size of the gain adjustment.
摘要翻译：在通信期望信道在通信突发期间变化的通信系统中，通信突发期间的增益调整可以通过接收机中的自动增益控制（AGC）来实现，性能下降最小。通过AGC单元和数字基带部分之间的合适的信息共享，可以成功地适应这些增益调整。数字基带部分可以适当地引导AGC单元，以确保在不携带实质性通信信息（例如，保护间隔）的时间间隔期间实现增益调整。在数字基带部分进行信道估计的接收机中，AGC单元通过向数字基带部分通知增益调整的定时来支持信道估计。 AGC单元还可以通过向数字基带部分通知增益调整的大小来支持信道估计。

8. 发明授权

US08983471B2 Complex intermediate frequency based receiver architecture 有权
标题翻译：基于复杂中频接收机架构
公开(公告)号：US08983471B2
公开(公告)日：2015-03-17
申请号：US13983566
申请日：2012-01-25
申请人： Leif Wilhelmsson , Lars Sundstrom , Fenghao Mu
发明人： Leif Wilhelmsson , Lars Sundstrom , Fenghao Mu
IPC分类号： H04W36/30 , H03D7/18 , H04B17/00
CPC分类号： H04W36/30 , H03D7/18 , H03D2200/0045 , H04B17/327 , H04B17/336
摘要： The disclosure relates to a Complex Intermediate Frequency (CIF)-based receiver adapted to process a received signal comprising a signal component at a desired frequency and a signal component as an image frequency. The CIF-based receiver determines the power of the received signal by calibrating the receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency, introduces signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency, and determines the power of the signal component at the image frequency based on the amount of degradation.
摘要翻译：本公开涉及一种适用于处理包含期望频率的信号分量和信号分量的接收信号作为图像频率的基于复数中频（CIF）的接收机。基于CIF的接收机通过校准接收机来确定接收信号的功率，以使图像频率处的信号分量的功率最小化，以在期望的频率处干扰信号分量，引入来自图像频率的信号泄漏以故意降级以期望频率的信号分量的质量，并且基于退化量确定图像频率处的信号分量的功率。

9. 发明授权

US08331506B2 Frequency-dependent IQ imbalance estimation 有权
标题翻译：频率依赖性IQ不平衡估计
公开(公告)号：US08331506B2
公开(公告)日：2012-12-11
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： H03D1/04
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。

10. 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。

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