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1. 发明申请

WO2012013679A1 TEST SIGNAL IN RECEIVER 审中-公开
标题翻译：接收器中的测试信号
公开(公告)号：WO2012013679A1
公开(公告)日：2012-02-02
申请号：PCT/EP2011/062834
申请日：2011-07-26
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , PARK, Chester , SUNDSTRÖM, Lars , SVENSSON, Jim , WILHELMSSON, Leif
发明人： PARK, Chester , SUNDSTRÖM, Lars , SVENSSON, Jim , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04B17/00 , H04L27/36
CPC分类号： H04B17/004 , H04B17/0085 , H04B17/20 , H04L27/2647 , H04L27/364 , H04L27/366
摘要： The invention proposes a way of inserting an analog test signal during normal reception into analog blocks of an OFDM receiver in such a way that the reception is either not corrupted at all, or only very little. This is achieved either by inserting the analog test signal in time or frequency where it does not corrupt the received signal, or by accounting for the interfering analog test signal in the decoding process.
摘要翻译：本发明提出了一种在正常接收期间将模拟测试信号插入到OFDM接收机的模拟块中的方式，使得接收完全没有被破坏，或者只是很少。这可以通过在不损坏接收信号的时间或频率插入模拟测试信号，或通过考虑解码过程中的干扰模拟测试信号来实现。

2. 发明申请

WO2012013421A1 TECHNIQUE AND TEST SIGNAL FOR DETERMINING SIGNAL PATH PROPERTIES 审中-公开
标题翻译：用于确定信号路径特性的技术和测试信号
公开(公告)号：WO2012013421A1
公开(公告)日：2012-02-02
申请号：PCT/EP2011/060093
申请日：2011-06-17
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SUNDSTRÖM, Lars , SVENSSON, Jim , WILHELMSSON, Leif
发明人： SUNDSTRÖM, Lars , SVENSSON, Jim , WILHELMSSON, Leif
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）。

3. 发明申请

WO2011076488A1 IQ-IMBALANCE ESTIMATION FOR NON-SYMMETRICAL PILOT SYMBOLS 审中-公开
标题翻译：非对称导引符号的智商不平等估计
公开(公告)号：WO2011076488A1
公开(公告)日：2011-06-30
申请号：PCT/EP2010/067613
申请日：2010-11-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , WILHELMSSON, Leif , PARK, Chester , SUNDSTRÖM, Lars
发明人： WILHELMSSON, Leif , PARK, Chester , SUNDSTRÖM, Lars
IPC分类号： H04L27/26 , H04L27/38
CPC分类号： H04L27/2657 , H04L27/2675 , H04L27/3863
摘要： The invention relates to a method and a receiver for clown-mixing a received signal in an Orthogonal Frequency Division Multiplexing (OFDM) system containing non-mirrored pilots to a baseband signal, comprising determining the down-mixing frequency based on a carrier frequency and a carrier frequency offset, wherein the carrier frequency offset is determined such that mirrored pilots are obtained in the baseband signal.
摘要翻译：本发明涉及一种用于在包含非镜像导频到基带信号的正交频分复用（OFDM）系统中对接收信号进行小丑混合的方法和接收机，包括：基于载波频率确定下混频率; 载波频率偏移，其中确定载波频率偏移，使得在基带信号中获得镜像导频。

4. 发明申请

WO2011026705A1 RADIO ENVIRONMENT SCANNER 审中-公开
标题翻译：无线环境扫描仪
公开(公告)号：WO2011026705A1
公开(公告)日：2011-03-10
申请号：PCT/EP2010/061346
申请日：2010-08-04
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , OLSSON, Thomas , WILHELMSSON, Leif , PARK, Chester , SUNDSTRÖM, Lars
发明人： OLSSON, Thomas , WILHELMSSON, Leif , PARK, Chester , SUNDSTRÖM, Lars
IPC分类号： H04B1/22 , H04W16/14 , H04W88/02
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。测量接收机可以进一步包括Δ-Σ模数转换器（ADC），以仅为要测量的特定频率范围提供低量化噪声;以及控制部件，用于配置Δ-ΣADC以提供低量化在特定频率范围内的噪声。

5. 发明申请

WO2011110964A1 FREQUENCY-DEPENDENT IQ IMBALANCE ESTIMATION 审中-公开
标题翻译：频率依赖智商不平等估计
公开(公告)号：WO2011110964A1
公开(公告)日：2011-09-15
申请号：PCT/IB2011/050633
申请日：2011-02-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , WILHELMSSON, Leif , SUNDSTRÖM, Lars
发明人： PARK, Chester , WILHELMSSON, Leif , SUNDSTRÖM, Lars
IPC分类号： H04L27/38
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. 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，接收到块类型的导频信号，例如在SCH上，并且从块型导频信号估计IQ不平衡和载波频率偏移。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以及相位噪声和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。

6. 发明申请

WO2012107286A1 COMPLEX INTERMEDIATE FREQUENCY BASED RECEIVER ARCHITECTURE 审中-公开
标题翻译：基于复杂中频的接收机架构
公开(公告)号：WO2012107286A1
公开(公告)日：2012-08-16
申请号：PCT/EP2012/051108
申请日：2012-01-25
申请人： Telefonaktiebolaget L M Ericsson (publ) , WILHELMSSON, Leif , SUNDSTRÖM, Lars , FENGHAO, Mu
发明人： WILHELMSSON, Leif , SUNDSTRÖM, Lars , FENGHAO, Mu
IPC分类号： H03D7/18
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，从而影响在期望频率处的信号分量，从而引起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。

7. 发明申请

WO2012084537A1 METHODS AND RECEIVER FOR POSITIONING OF CLOCK RELATED SPURIOUS SIGNALS 审中-公开
标题翻译：用于定位时钟相关的SPURIOUS信号的方法和接收器
公开(公告)号：WO2012084537A1
公开(公告)日：2012-06-28
申请号：PCT/EP2011/072230
申请日：2011-12-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , LINDOFF, Bengt , WILHELMSSON, Leif , SUNDSTRÖM, Lars
发明人： LINDOFF, Bengt , WILHELMSSON, Leif , SUNDSTRÖM, Lars
IPC分类号： H04B15/06 , H04L27/26
CPC分类号： H04L27/2649 , H04B15/06 , H04L27/2657 , H04L2027/0016 , H04L2027/0032 , H04L2027/0065
摘要： Methods and a receiver of positioning a spurious signal for reducing the impact of the spurious signal on a received Orthogonal Frequency Division Multiplexing, OFDM signal, are presented. The method comprises determining the frequency of a spurious signal (steps 102, 204, 404), determining the frequency for the respective sub-carrier of the OFDM signal and the difference between the frequency of a sub-carrier and the frequency of a spurious signal (steps 104, 206, 406), and adjusting at least one of: the frequency of the first oscillator (step 208) and a parameter related to the frequency of a second oscillator, to decrease the frequency difference between a sub-carrier and a spurious signal (steps 106, 212, 408). By positioning a spurious signal at or near a sub-carrier frequency, the performance impact of the spurious signal is reduced, and the receiver performance improved.
摘要翻译：提出了一种定位杂散信号以减少寄生信号对接收到的正交频分复用OFDM信号的影响的方法和接收机。该方法包括确定寄生信号的频率（步骤102,204,404），确定OFDM信号的相应子载波的频率以及子载波的频率与寄生信号的频率之间的差异（步骤104,206,406），并且调整第一振荡器的频率（步骤208）和与第二振荡器的频率相关的参数中的至少一个，以降低副载波和第二振荡器之间的频率差寄生信号（步骤106,212,408）。通过在副载波频率处或附近定位杂散信号，减少了杂散信号的性能影响，并提高了接收机性能。

8. 发明申请

WO2012055469A1 SELF-INTERFERENCE SUPPRESSION CONTROL FOR A RELAY NODE 审中-公开
标题翻译：用于继电器节点的自干扰抑制控制
公开(公告)号：WO2012055469A1
公开(公告)日：2012-05-03
申请号：PCT/EP2011/004756
申请日：2011-09-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (Publ) , WILHELMSSON, Leif , SUNDSTRÖM, Lars
发明人： WILHELMSSON, Leif , SUNDSTRÖM, Lars
IPC分类号： H04B7/155
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率信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机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干扰。

9. 发明申请

WO2012038336A1 COMPLEX INTERMEDIATE FREQUENCY MIXER STAGE AND CALIBRATION THEREOF 审中-公开
标题翻译：复杂的中间频率混频器阶段及其校准
公开(公告)号：WO2012038336A1
公开(公告)日：2012-03-29
申请号：PCT/EP2011/066099
申请日：2011-09-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MU, Fenghao , WILHELMSSON, Leif , SUNDSTRÖM, Lars
发明人： MU, Fenghao , WILHELMSSON, Leif , SUNDSTRÖM, Lars
IPC分类号： H03D7/16 , H03D7/18
CPC分类号： H04B1/06 , H03D7/166 , H03D7/18
摘要： The invention relates to a complex intermediate frequency (CIF) mixer stage, methods of operation thereof, and methods of calibration thereof. The CIF mixer stage comprises numerous individual mixers driven by IF clock signals to down-convert received IF signals into a set of signals at baseband frequency which are further combined to form a lower side band signal and an upper side band signal. The IF clock signals used have a predefined phase relationship among them, which involves tuneable phase skews. By calibration of the conversion gains and the phases of the IF clock signals the gain and phase imbalance introduced in a preceding radio frequency mixer stage and/or the CIF mixer stage can be cancelled. Further, in-channel IQ leakage control can be applied to the lower side band signal and/or the upper side band signal. The CIF mixer stage can thus effectively suppress image interference and IQ leakage.
摘要翻译：本发明涉及复杂中频（CIF）混频器级，其操作方法及其校准方法。 CIF混频器级包括由IF时钟信号驱动的多个单独的混频器，以将接收到的IF信号降频转换成基带频率的一组信号，这些信号进一步组合以形成下边带信号和上边带信号。所使用的IF时钟信号之间具有预定的相位关系，这涉及到可调相位偏移。通过校准转换增益和IF时钟信号的相位，可以取消在前一个射频混频器级和/或CIF混频器级中引入的增益和相位不平衡。此外，信道内IQ泄漏控制可以应用于下边带信号和/或上边带信号。因此，CIF混频器级可以有效地抑制图像干扰和IQ泄漏。

10. 发明申请

WO2012055468A1 SELF-INTERFERENCE SUPPRESSION CONTROL FOR A RELAY NODE 审中-公开
标题翻译：用于继电器节点的自干扰抑制控制
公开(公告)号：WO2012055468A1
公开(公告)日：2012-05-03
申请号：PCT/EP2011/004755
申请日：2011-09-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , WILHELMSSON, Leif , SUNDSTRÖM, Lars
发明人： WILHELMSSON, Leif , SUNDSTRÖM, Lars
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。

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