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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

WO2011140046A1 INTER-CARRIER BANDWIDTH CONTROL FOR MITIGATING IQ IMBALANCE 审中-公开
标题翻译：用于减轻智商不平等的携带者带宽控制
公开(公告)号：WO2011140046A1
公开(公告)日：2011-11-10
申请号：PCT/US2011/034939
申请日：2011-05-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , SUNDSTRÖM, Lars , SVENSSON, Jim
发明人： PARK, Chester , SUNDSTRÖM, Lars , SVENSSON, Jim
IPC分类号： H04L27/26 , H04L27/38 , H04B17/00
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 in a carrier aggregation environment 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，便于载波聚合环境中的数字IQ不平衡估计和补偿。特别地，在多载波接收机中，至少一个接收机支路中的信号处理元件的频率响应被设置为不完全衰减感兴趣的频带中的接收信号。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，在另一个接收机支路中的信号的载波间图像中，有助于IQ失衡的数字估计和补偿。

3. 发明申请

WO2012090097A1 CONTROLLABLE FREQUENCY OFFSET FOR INPHASE AND QUADRATURE (IQ) IMBALANCE ESTIMATION 审中-公开
标题翻译：基准和平衡（IQ）不平等估计的可控频率偏移
公开(公告)号：WO2012090097A1
公开(公告)日：2012-07-05
申请号：PCT/IB2011/055473
申请日：2011-12-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , SVENSSON, Jim
发明人： PARK, Chester , SVENSSON, Jim
IPC分类号： H04L27/00 , H04L27/28
CPC分类号： H04L27/2659 , H04L27/0014 , H04L27/2647 , H04L27/28 , H04L2027/0026
摘要： Embodiments of user equipment and methods for determining IQ imbalance parameters are described. In some embodiments, a method for determining in-phase (I) and Quadrature (Q) imbalance (IQ imbalance) parameters based on a known signal in a dual-carrier receiver using at least one controllable frequency offset includes receiving a known signal modulated onto a first radio frequency (RF) carrier frequency and a second RF carrier frequency different than the first RF carrier frequency; downconverting the known signal to a baseband signal for the first and second carriers by conversion from the respective RF carrier frequencies to an intermediate frequency (IF) using a common RF local oscillator (LO) and by further conversion from IF to baseband using carrier specific IF LOs, wherein as a controllable frequency offset is used as a part of the conversion from at least one of RF to IF and IF to baseband through the LOs; removing any controllable frequency offset from the baseband signal for the first and second carriers to produce representations of the received signals of the first and second carriers; and deriving IQ imbalance parameters for each representation of the received signals of the first and second carriers using a least square estimate.
摘要翻译：描述用于确定IQ不平衡参数的用户设备和方法的实施例。在一些实施例中，基于使用至少一个可控频率偏移的双载波接收机中的已知信号来确定同相（I）和正交（Q）不平衡（IQ不平衡）参数的方法包括：接收已调制到第一射频（RF）载波频率和与第一RF载波频率不同的第二RF载波频率; 通过使用公共RF本地振荡器（LO）从相应的RF载波频率转换到中频（IF）将已知信号下变频为第一和第二载波的基带信号，并且通过使用载波专用IF进一步从IF到基带的转换 LO，其中作为可控频率偏移用作从RF到IF和IF中的至少一个到通过LO的基带的转换的一部分; 从第一和第二载波的基带信号中去除任何可控频率偏移，以产生第一和第二载波的接收信号的表示; 以及使用最小平方估计来导出第一和第二载波的接收信号的每个表示的IQ不平衡参数。

4. 发明申请

WO2013017975A1 METHOD AND DEVICE FOR ITERATIVE BLIND WIDEBAND SAMPLING 审中-公开
标题翻译：用于迭代盲孔宽带采样的方法和装置
公开(公告)号：WO2013017975A1
公开(公告)日：2013-02-07
申请号：PCT/IB2012/053617
申请日：2012-07-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester
发明人： PARK, Chester
IPC分类号： H04L27/00 , H03M1/12 , H03M1/18 , H03M7/30 , H04W16/14 , H04W74/08
CPC分类号： H04L27/0006 , H03M1/124 , H03M1/18 , H03M7/30 , H03M7/3062 , H04B1/001 , H04W16/14
摘要： Devices and methods are for iteratively sampling a wideband signal in order to recover one or more narrowband signals are disclosed, in one aspect, a wideband signal is received and the signal is sampled using a sampling device, which includes an amplifier with an initial, gain level, to produce a plurality of sampled signals. A first set of narrowband signals may be recovered from the plurality of sampled signals. Then, the wideband signal is re-sampled to produce a second plurality of sampled signals. The re-sampling includes increasing the gain of the amplifier to a second level and suppressing a component of the wideband signal. A second set of nanowband signals may then be recovered from the second set of sampled signals..
摘要翻译：设备和方法用于对宽带信号进行迭代采样，以便恢复一个或多个窄带信号，一方面，接收宽带信号并且使用采样装置对信号进行采样，该采样装置包括具有初始增益的放大器电平，以产生多个采样信号。可以从多个采样信号中恢复第一组窄带信号。然后，重新采样宽带信号以产生第二多个采样信号。重采样包括将放大器的增益增加到第二电平并抑制宽带信号的分量。然后可以从第二组采样信号中恢复第二组纳米带信号。

5. 发明申请

WO2013017997A1 TRANSMISSION MODE ADAPTATION IN A WIRELESS NETWORK 审中-公开
标题翻译：无线网络中的传输模式适配
公开(公告)号：WO2013017997A1
公开(公告)日：2013-02-07
申请号：PCT/IB2012/053806
申请日：2012-07-25
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , WANG, Yi-Pin Eric
发明人： PARK, Chester , WANG, Yi-Pin Eric
IPC分类号： H04L1/20 , H04L1/00 , H04L25/03 , H04B7/04
CPC分类号： H04L1/0015 , H04B7/0473 , H04B17/336 , H04L1/20 , H04L25/03923 , H04L25/03929
摘要： Conventional mode adaptation does not account for the gain imbalance between channels for measurement and for data reception. Therefore, the precoder, which is selected based on the measurement channel may not be the optimal precoder for the data reception channel. By maintaining relative SINR ordering between transmission modes, a receiver (110) may select the transmission mode for a transmitter (130) that maximizes the actual throughput even in the presence of inter-antenna gain increase or decrease.
摘要翻译：常规模式适配不考虑用于测量和数据接收的通道之间的增益不平衡。因此，基于测量信道选择的预编码器可能不是数据接收信道的最佳预编码器。通过维持传输模式之间的相对SINR排序，接收器（110）可以为即使在存在天线间增益增加或减小的情况下使实际吞吐量最大化的发射机（130）选择传输模式。

6. 发明申请

WO2012063190A1 METHODS AND SYSTEMS FOR PRECODER SELECTION ASSISTED BY DEMODULATION REFERENCE SIGNALS (DM-RS) 审中-公开
标题翻译：通过解调参考信号（DM-RS）辅助的预编译器选择的方法和系统
公开(公告)号：WO2012063190A1
公开(公告)日：2012-05-18
申请号：PCT/IB2011/054961
申请日：2011-11-07
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , BEHRAVAN, Ali , KOORAPATY, Havish
发明人： PARK, Chester , BEHRAVAN, Ali , KOORAPATY, Havish
IPC分类号： H04B7/06 , H04B7/04
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0617 , H04B7/0626
摘要： Systems and methods according to these exemplary embodiments provide for using demodulation reierence signals (DM-RSs) to obtain channel state iiifontiation (CSl) for precoder selection. A method includes: receiving a DM-RS in at least one subframe (40), determining the CSl from the DM-RS (42); and using the CSI to perform at least one function (44).
摘要翻译：根据这些示例性实施例的系统和方法提供使用解调重现信号（DM-RS）来获得用于预编码器选择的信道状态异常（CS1）。一种方法包括：在至少一个子帧（40）中接收DM-RS，从DM-RS（42）确定CS1; 以及使用所述CSI执行至少一个功能（44）。

7. 发明申请

WO2011138697A1 DIGITAL IQ IMBALANCE COMPENSATION FOR DUAL-CARRIER DOUBLE CONVERSION RECEIVER 审中-公开
标题翻译：双载波双转换接收机的数字智能不平衡补偿
公开(公告)号：WO2011138697A1
公开(公告)日：2011-11-10
申请号：PCT/IB2011/051704
申请日：2011-04-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , ANDGART, Niklas
发明人： PARK, Chester , ANDGART, Niklas
IPC分类号： H04L27/26 , H04L27/38 , H04B17/00 , H04B1/26 , H03D7/16
CPC分类号： H04L27/3863 , H04B1/28 , H04B1/30 , H04B17/21 , H04L5/001 , H04L27/2634 , H04L27/2647
摘要： Digital IQ imbalance compensation is utilized for a dual-carrier double conversion receiver. First, the effect of IQ imbalance on OFDM-based digital baseband is analyzed, showing that, in the presence of IQ imbalance, the baseband signal of each carrier is obtained from its own branch as well as the other branch. Second, IQ imbalance parameters of interest are estimated using pilot signals and compensated using only digital baseband processing.
摘要翻译：数字IQ不平衡补偿用于双载波双转换接收机。首先分析了IQ不平衡对基于OFDM的数字基带的影响，表明在存在IQ不平衡的情况下，每个载波的基带信号从其自身的分支以及另一个分支获得。第二，使用导频信号估计IQ不平衡参数，并仅使用数字基带处理进行补偿。

8. 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。

9. 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。

10. 发明申请

WO2010055387A3 SYMBOL LEVEL LAYER SHIFTING FOR MULTIPLE STREAM TRANSMISSION USING DFT-SPREAD OFDM 审中-公开
公开(公告)号：WO2010055387A3
公开(公告)日：2010-05-20
申请号：PCT/IB2009/007401
申请日：2009-11-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , JÖNGREN, George
发明人： PARK, Chester , JÖNGREN, George
IPC分类号： H04L5/00 , H04L27/26
摘要： A system, method and node of single-carrier layer shifting for multiple- stream transmission in a network. Per-symbol layer shifting for multiple-stream transmission is implemented using DFTS-OFDM as an access technique. Code word-to-layer mapping is fixed within a DFTS-OFDM symbol and only shifted across consecutive DFTS-OFDM symbols. The method begins by receiving a multiple-stream transmission by a mapping module for transmission. The transmission includes a plurality of subframes and information carrying symbols transmitted on a plurality of layers. A per-symbol layer shifting scheme is then implemented on the transmission where layer shifting is conducted upon each symbol.

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