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1. 发明申请

WO2013156044A8 TECHNIQUE FOR CALIBRATING A RECEIVER APPARATUS 审中-公开
标题翻译：接收装置的校准技术
公开(公告)号：WO2013156044A8
公开(公告)日：2013-12-27
申请号：PCT/EP2012001723
申请日：2012-04-20
申请人： ERICSSON TELEFON AB L M , WILHELMSSON LEIF , STRANDBERG ROLAND , SVENSSON JIM
发明人： WILHELMSSON LEIF , STRANDBERG ROLAND , SVENSSON JIM
IPC分类号： H04L27/38
CPC分类号： H04B17/10 , H04B1/10 , H04L27/3863
摘要： A technique for calibrating a receiver apparatus comprising at least one analog signal processing component and an intermediate frequency, or IF, mixer for converting IF signals comprising an in-phase, or I, signal and a quadrature-phase, or Q, signal to baseband frequency signals is provided. The IF mixer is arranged downstream of the at least one analog signal processing component. A method implementation of the technique comprises the steps of determining, in a digital processing domain downstream of the IF mixer, a metric which is affected by a frequency dependency of an imbalance between I and the Q signal, or IQ-imbalance, over a signal bandwidth, generating, based on the metric thus determined, a calibration signal configured to at least partially compensate a frequency-dependency of the IQ imbalance, and feeding the calibration signal to the at least one analog signal processing component so as to calibrate the at least one analog signal processing component.
摘要翻译：一种用于校准包括至少一个模拟信号处理部件和中频的接收器装置的技术或IF混合器，用于将包括同相或I信号和正交相位或Q信号的IF信号转换成基带提供频率信号。 IF混频器被布置在至少一个模拟信号处理组件的下游。该技术的方法实现包括以下步骤：在IF混频器下游的数字处理域中确定受到信号上I和Q信号之间的不平衡或IQ不平衡的频率依赖性影响的度量带宽，基于如此确定的度量生成校准信号，该校准信号被配置为至少部分地补偿IQ不平衡的频率依赖性，并且将校准信号馈送到至少一个模拟信号处理组件，以便校准至少一个一个模拟信号处理组件。

2. 发明申请

WO2013043106A2 MIXER UNIT 审中-公开
标题翻译：混合器单元
公开(公告)号：WO2013043106A2
公开(公告)日：2013-03-28
申请号：PCT/SE2012/050972
申请日：2012-09-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SJÖLAND, Henrik , SUNDSTRÖM, Lars , ANDERSON, Martin , SVENSSON, Jim
发明人： SJÖLAND, Henrik , SUNDSTRÖM, Lars , ANDERSON, Martin , SVENSSON, Jim
IPC分类号： H04B1/04
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）。混合器单元具有从每个输入端子（32+，32-）到混频器单元（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信号对于每个信号处理路径具有相关联的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联的子集，用于在信号处理路径（50a-d，60a〜d）中操作，使得属于所述有源开关子集的多个混频器开关（70a-N）中的哪一个在时间上变化。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。

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

WO2011000796A1 METHODS AND SYSTEMS FOR USE-CASE AWARE VOLTAGE SELECTION 审中-公开
标题翻译：用于电源电压选择的方法和系统
公开(公告)号：WO2011000796A1
公开(公告)日：2011-01-06
申请号：PCT/EP2010/059120
申请日：2010-06-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SVENSSON, Jim , KAMUF, Matthias
发明人： SVENSSON, Jim , KAMUF, Matthias
IPC分类号： G06F1/32
CPC分类号： G06F1/3203 , G06F1/3296 , Y02D10/172
摘要： Systems and methods according to these exemplary embodiments provide for optimizing voltage use in digital circuits. This can be obtained by creating situations for digital circuits such that the effective critical path (ECP) can be used such as, for 5 example, the case where a digital circuit includes a plurality of voltage domains powered by individual and possibly different voltage sources. This can then reduce voltage use in digital circuits.
摘要翻译：根据这些示例性实施例的系统和方法提供了优化数字电路中的电压使用。这可以通过创建用于数字电路的情况来获得，使得可以使用有效关键路径（ECP），例如，例如，数字电路包括由单独的和可能不同的电压源供电的多个电压域的情况。这样可以减少数字电路中的电压使用。

5. 发明申请

WO2008074734A1 INTER-CARRIER INTERFERENCE CANCELLATION FOR OFDMA SYSTEMS 审中-公开
标题翻译： OFDMA系统的互操作干扰消除
公开(公告)号：WO2008074734A1
公开(公告)日：2008-06-26
申请号：PCT/EP2007/063947
申请日：2007-12-14
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WILHELMSSON, Leif , NEVALAINEN, Andreas , SVENSSON, Jim
发明人： WILHELMSSON, Leif , NEVALAINEN, Andreas , SVENSSON, Jim
IPC分类号： H04L25/03 , H04L27/26
CPC分类号： H04L27/2647 , H04L5/023 , H04L25/03248 , H04L25/03821
摘要： Inter-carrier interference (ICI) cancellation is performed on a received signal comprising signals transmitted by a transmitter to a plurality of users. ICI cancellation is performed for a given user by identifying the signals transmitted to other users that cause the largest ICI to signals transmitted to the receiving user, and selectively removing the ICI contribution from these transmissions. This may be acc omplished by calculating the ICI terms based on an es timate of the transmitted signal calculated as the received signal divided by an estimate of the channel. Alternatively, the transmissions causing the ICI may be selectively demodulated and decoded, and the improved estimates of the transmitted signal used for ICI estimation and cancellation. Which transmissions cause the largest ICI on others depends on the relative strength of the corresponding data and pilot symbols and how much orthogonality is lost.
摘要翻译：对包括由发射机发送到多个用户的信号的接收信号执行载波间干扰（ICI）消除。通过识别发送给其他用户的信号，使得最大ICI发送到接收用户的信号，并且从这些传输中选择性地去除ICI贡献，对给定的用户执行ICI消除。这可以通过基于被计算为接收信号除以信道的估计的传输信号的时间计算ICI项来计算。或者，可以选择性地解调和解码导致ICI的传输，以及用于ICI估计和消除的传输信号的改进的估计。哪些传输导致其他最大的ICI取决于相应的数据和导频符号的相对强度以及丢失多少正交性。

6. 发明申请

WO2008009358A1 FOLDING OF INPUT DATA VALUES TO A TRANSFORM FUNCTION 审中-公开
标题翻译：将输入数据值折叠成变换功能
公开(公告)号：WO2008009358A1
公开(公告)日：2008-01-24
申请号：PCT/EP2007/006002
申请日：2007-07-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SVENSSON, Jim , WILHELMSSON, Leif , OLSSON, Thomas
发明人： SVENSSON, Jim , WILHELMSSON, Leif , OLSSON, Thomas
IPC分类号： G06F17/14 , H04L27/26
CPC分类号： G06F17/142 , H04L27/263 , H04L27/265
摘要： A method of processing a set of input data values comprises the steps of providing said input data values serially to circuitry (10) comprising a number of memory elements (14, 15, 16, 17, 24, 25, 34); and performing in said circuitry a transform function to obtain a set of transformed data values. The method further comprises the steps of delaying a subset of said set of input data values under use of said memory elements (14, 15, 16, 17, 24, 25, 34); providing a modified set of data values by adding individual delayed data values to individual non-delayed data values from said set of input data values; and performing said transform function on said modified set of data values. In this way a transform function can be evaluated at fewer output data values than available input data values without increasing the memory requirements considerably.
摘要翻译：一种处理一组输入数据值的方法包括以下步骤：将所述输入数据值串行提供给包括多个存储器元件（14,15,16,17,24,25,34）的电路（10）; 以及在所述电路中执行变换函数以获得一组经变换的数据值。该方法还包括以下步骤：在使用所述存储器元件（14,15,16,17,24,25,34）的同时延迟所述一组输入数据值的子集; 通过将各个延迟数据值从所述输入数据值集合中的各个非延迟数据值增加来提供修改的数据值集合; 以及对所述修改的数据值集合执行所述变换函数。以这种方式，可以以比可用输入数据值更少的输出数据值来评估变换函数，而不会显着增加内存需求。

7. 发明申请

WO2006111275A2 INITIAL PARAMETER ESTIMATION IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统中的初始参数估计
公开(公告)号：WO2006111275A2
公开(公告)日：2006-10-26
申请号：PCT/EP2006/003173
申请日：2006-04-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON , BERKEMAN, Anders , SVENSSON, Jim , WILHELMSSON, Leif
发明人： BERKEMAN, Anders , SVENSSON, Jim , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04L1/20
CPC分类号： H04L25/0232 , H04L25/0216 , H04L25/022 , H04L25/0234 , H04L27/2647 , H04L27/2665
摘要： A coarse estimate of a location of an information carrying part of a symbol in a received signal in a telecommunication system is generated. This involves generating correlation values by correlating the received signal with a delayed received signal. A maximum correlation value of the correlation values is identified, and a duration in time during which the correlation values are greater than or equal to a predetermined percentage of the maximum correlation value is identified, wherein the duration in time begins at a first moment in time and ends at a second moment in time. The coarse estimate of the location of the peak correlation value is set equal to a moment in time between the first moment in time and the second moment in time, for example, a midpoint between the first moment in time and the second moment in time.
摘要翻译：产生在电信系统中的接收信号中承载符号部分的信息的位置的粗略估计。这涉及通过将接收的信号与延迟的接收信号相关来产生相关值。识别相关值的最大相关值，并且识别相关值大于或等于最大相关值的预定百分比的时间持续时间，其中时间持续时间从第一时刻开始并在第二时刻结束。将峰值相关值的位置的粗略估计设置为等于第一时刻与第二时刻之间的时刻，例如，第一时刻与第二时刻之间的中点。

8. 发明申请

WO2007068438A2 CIRCULAR FAST FOURIER TRANSFORM 审中-公开
标题翻译：圆形快速傅立叶变换
公开(公告)号：WO2007068438A2
公开(公告)日：2007-06-21
申请号：PCT/EP2006/011935
申请日：2006-12-12
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , WILHELMSSON, Leif , SVENSSON, Jim , BERKEMAN, Anders
发明人： WILHELMSSON, Leif , SVENSSON, Jim , BERKEMAN, Anders
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L27/265 , H04L27/2662
摘要： A DIF FFT stage is used in an N bin FFT, wherein N is an even integer. The DIF FFT stage includes swap logic that receives a first input sample, x ( v ), and a second input sample, x ( v + N /2), and selectively supplies either the first and second input samples at respective first and second swap logic output ports or alternatively the second and first input samples at the respective first and second swap logic output ports, wherein 0 ≤ v N/ 2 . The DIF FFT stage further includes a summing unit for adding values supplied by the first and second swap logic output ports; a differencing unit for subtracting values supplied by the first and second swap logic output ports; and twiddle factor logic that multiplies a value supplied by the differencing unit by a twiddle factor, W N (v + s)mod( N /2) , where s is an integer representing an amount of circular shift of N input samples.
摘要翻译：在N bin FFT中使用DIF FFT级，其中N是偶数整数。 DIF FFT级包括接收第一输入采样x（v）和第二输入采样x（v + N / 2）的交换逻辑，并且在相应的第一和第二交换处选择性地提供第一和第二输入采样逻辑输出端口或备选地在相应的第一和第二交换逻辑输出端口处的第二和第一输入采样，其中0 = v

9. 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。

10. 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。

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