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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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.

7. 发明申请

WO2013024370A1 FRONT -END MODULE FOR TIME DIVISION DUPLEX WITH CARRIER AGGREGATION (TDD - CA) 审中-公开
标题翻译：用于具有载波聚合的时分双工的前端模块（TDD-CA）
公开(公告)号：WO2013024370A1
公开(公告)日：2013-02-21
申请号：PCT/IB2012/052929
申请日：2012-06-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PARK, Chester , CHENG, Jung-Fu
发明人： PARK, Chester , CHENG, Jung-Fu
IPC分类号： H04B1/44 , H04B1/00 , H04B1/04 , H04B1/18 , H04B1/54
CPC分类号： H04B1/44 , H04B1/005 , H04B1/0458 , H04B1/18
摘要： A front-end module (185) for Time Division Duplex, TDD, with Carrier Aggregation, CA, wherein the front-end module reuses the band selection filters (206, 207) for the aggregated bands and provides switched connections to antenna (1.87, 188, 220) and transmitter/receiver (1.90, 191, 193, 194, 222, 223) according to the Uplink/ Downlink configuration. The use of switches on both the antenna side and the transmitter receiver side of the front-end module enables the reuse of the band selection filters. The front-end module according to the present invention reduces the number of required filters to only one filter for each TDD-CA Component Carrier, CC, band. Thus, the front-end module avoids unnecessary baud selection filters, and thereby also controls the cost of implementation of front-end modules in wireless units operating in the TDD-CA mode.
摘要翻译：一种用于时分双工（TDD）的前端模块（185），其具有载波聚合（CA），其中所述前端模块重新使用所述聚合频带的频带选择滤波器（206,207），并提供到天线（1.87， 188,220）以及根据上行链路/下行链路配置的发射机/接收机（1.90,191,193,194,222,223）。在前端模块的天线侧和发射机接收机侧使用开关使得能够重新使用频带选择滤波器。根据本发明的前端模块将针对每个TDD-CA分量载波，CC，频带的所需滤波器数量减少到仅一个滤波器。因此，前端模块避免了不必要的波特率选择滤波器，从而也可以控制在TDD-CA模式下工作的无线单元中实现前端模块的成本。

8. 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。

9. 发明申请

WO2011128805A1 CHANNEL ESTIMATION FOR EQUALIZER USING SERIAL LOCALIZATION WITH INDECISION 审中-公开
标题翻译：使用串行本地化的均衡器的通道估计
公开(公告)号：WO2011128805A1
公开(公告)日：2011-10-20
申请号：PCT/IB2011/051444
申请日：2011-04-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KHAYRALLAH, Ali, S. , PARK, Chester , WANG, Yi-Pin, Eric
发明人： KHAYRALLAH, Ali, S. , PARK, Chester , WANG, Yi-Pin, Eric
IPC分类号： H04L27/38 , H04L27/34
CPC分类号： H04L27/38 , H04L25/0242 , H04L25/03229 , H04L27/3416 , H04L2025/03388 , H04L2025/03414
摘要： A multi-stage equalizer implementing a low complexity sequence estimation technique referred to as serial localization with indecision (SLI). The multi-stage equalizer includes a plurality of stages including one or more preliminary stages and a final stage. Each stage includes a demodulator that simultaneously equalizes and demodulates an input signal to generate an intermediate sequence estimate comprising a sequence of intermediate symbol estimates. The preliminary stages further include a signal generator to generate the input signal to the next stage. The signal generator includes a modulator to re -modulate the intermediate symbol estimates generated in the same stage and a combiner to subtract the re -modulated symbols from the input signal to generate a residual signal for input to the next stage. The signal generator is not needed in the final stage. A combiner adds the intermediate sequence estimates produced in each stage to produce the final sequence estimate. The combiner may be implemented as a single combiner or as multiple combiners to generate cumulative intermediate symbols estimates at each stage. These intermediate symbol estimates can be used as affective pilot symbols to improve channel estimation for later stages.
摘要翻译：实现低复杂度序列估计技术的多级均衡器被称为具有不确定性的串行定位（SLI）。多级均衡器包括多个级，包括一个或多个初级和最后级。每个级包括解调器，其同时均衡和解调输入信号以产生包括中间符号估计序列的中间序列估计。初级阶段还包括一个信号发生器，用于产生到下一级的输入信号。信号发生器包括用于重新调制在同一级产生的中间符号估计的调制器和组合器，以从输入信号中减去重新调制的符号，以产生用于输入到下一级的残余信号。在最后阶段不需要信号发生器。组合器将在每个阶段产生的中间序列估计值加上以产生最终序列估计。组合器可以被实现为单个组合器或多个组合器，以在每个阶段产生累积中间符号估计。这些中间符号估计可以用作情感导频符号，以改进后期阶段的信道估计。

10. 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。

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