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1. 发明授权

US09876658B2 Non-coherent multi-symbol-delay differential detector 有权
公开(公告)号：US09876658B2
公开(公告)日：2018-01-23
申请号：US15392421
申请日：2016-12-28
申请人： Maxlinear, Inc.
发明人： Ioannis Spyropoulos , Anand Anandakumar
IPC分类号： H04L25/03 , H04B1/16
CPC分类号： H04L25/03184 , H04B1/16
摘要： An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.

2. 发明授权

US09634785B2 Interference cancellation method of user equipment in cellular communication system 有权
公开(公告)号：US09634785B2
公开(公告)日：2017-04-25
申请号：US14793332
申请日：2015-07-07
申请人： Samsung Electronics Co., Ltd.
发明人： Heun-Chul Lee , Jong-Han Lim
IPC分类号： H04W4/00 , H04J11/00 , H04B7/04 , H04W72/08 , H04B7/0413
CPC分类号： H04J11/005 , H04B7/0413 , H04B7/0486 , H04L25/03184 , H04L25/03891 , H04W72/082
摘要： An interference cancellation method and apparatus of user equipment in a cellular communication system is provided. The method includes receiving signals including a desired signal and an interference signal from one or more base stations; determining a maximum likelihood (ML) decision metric to determine a value “l” of a rank indicator (RI), a value “p” of a precoding matrix indicator (PMI), and a value “q” of a modulation (MOD) level of the interference signal; applying a logarithm to the ML decision metric, and applying a maximum-log approximation to a serving data vector and an interference data vector, which are included in the ML decision metric; determining the values of “l,” “p,” and “q” using the applied ML decision metric; and cancelling the interference signal from the received signals using the determined values of “l,” “p,” and “q.”

3. 发明授权

US09246718B2 Non-coherent multi-symbol-delay differential detector 有权
标题翻译：非相干多符号延迟差分检测器
公开(公告)号：US09246718B2
公开(公告)日：2016-01-26
申请号：US14602837
申请日：2015-01-22
申请人： MaxLinear, Inc.
发明人： Ioannis Spyropoulos , Anand Anandakumar
IPC分类号： H04L25/03
CPC分类号： H04L25/03184 , H04B1/16
摘要： An electronic receiver may generate a differential detection sequence based on a received symbol sequence and based on a m-symbol delayed version of the received symbol sequence, where m is an integer greater than 1. The particular differential detection sequence may be a result of an element-by-element multiplication of the particular received symbol sequence and the conjugate of an m-symbol delayed version of the particular received symbol sequence. The receiver may calculate differential decision metrics based on the differential detection sequence and based on a set of differential symbol sequences generated from the set of possible transmitted symbol sequences. The receiver may generate a decision as to which of a set of possible transmitted symbol sequences resulted in the received symbol sequence, where the decision is based on the differential decision metrics and the set of possible transmitted symbols sequences.
摘要翻译：电子接收机可以基于接收到的符号序列并基于接收符号序列的m符号延迟版本来生成差分检测序列，其中m是大于1的整数。特定的差分检测序列可以是特定接收符号序列的逐个元素乘法和特定接收符号序列的m符号延迟版本的共轭。接收机可以基于差分检测序列并且基于从该组可能发送的符号序列生成的一组差分符号序列来计算差分决策度量。接收机可以产生关于一组可能的传输符号序列中的哪一个导致接收到的符号序列的决定，其中该决定基于差分决策度量和可能发送的符号序列的集合。

4. 发明授权

US08953727B2 Method of detection of signal in communication systems with MIMO channel 有权
标题翻译： MIMO信道通信系统信号检测方法
公开(公告)号：US08953727B2
公开(公告)日：2015-02-10
申请号：US13737222
申请日：2013-01-09
申请人： Samsung Electronics Co. Ltd.
发明人： Bakulin Mihail Germanovich , Rog Andrey Leonidovich , Chernysh Alexander Victorovich , Kreyndelin Vitaliy Borisovich
IPC分类号： H04B7/10 , H04L25/02 , H04L25/03 , H04B7/08
CPC分类号： H04L25/0256 , H04B7/0854 , H04L25/03184 , H04L25/0321 , H04L25/03891
摘要： An apparatus and a method for detecting signals are provided. The method for detecting signals in a receiving end having a plurality of antenna in wireless communication system includes performing Minimum Mean Square Error (MMSE) estimation for a transmitted symbol vector, determining a covariance matrix for the MMSE estimation, determining a triangular matrix based on the covariance matrix, and determining accumulated metrics for each symbol vector candidate based on the triangular matrix.
摘要翻译：提供一种用于检测信号的装置和方法。用于检测在无线通信系统中具有多个天线的接收端中的信号的方法包括对发送的符号向量执行最小均方误差（MMSE）估计，确定用于MMSE估计的协方差矩阵，基于协方差矩阵，并且基于三角矩阵来确定每个符号向量候选的累积度量。

5. 发明授权

US08743987B2 Symbol detection for alleviating inter-symbol interference 失效
标题翻译：用于缓解符号间干扰的符号检测
公开(公告)号：US08743987B2
公开(公告)日：2014-06-03
申请号：US13050210
申请日：2011-03-17
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04L27/06 , H04L27/01 , H04B1/10
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A receiver is configured to perform symbol detection based on a total frequency domain received signal that comprises contribution from a block of time domain symbols. The receiver comprises electronic circuitry operate to divide the block into plural sub-blocks, and for each sub-block, to jointly detect the symbols of the sub-block while treating symbols of the block which are outside of the sub-block as noise.
摘要翻译：接收机被配置为基于包括来自时域符号块的贡献的总频域接收信号执行符号检测。接收机包括电子电路，用于将块划分为多个子块，并且对于每个子块，共同检测子块的符号，同时将处于子块外部的块的符号作为噪声进行处理。

6. 发明授权

US08718199B2 Frequency-domain multi-stage group detection for alleviating inter-symbol interference 有权
标题翻译：用于减轻符号间干扰的频域多级组检测
公开(公告)号：US08718199B2
公开(公告)日：2014-05-06
申请号：US13050433
申请日：2011-03-17
申请人： Yi-Pin Eric Wang , Gregory E. Bottomley
发明人： Yi-Pin Eric Wang , Gregory E. Bottomley
IPC分类号： H04L27/06
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A receiver comprises plural receive antennas and electronic circuitry. The plural receive antennas are configured to receive, on plural subcarriers transmitted over a radio interface, a frequency domain signal that comprises contribution from a block of time domain symbols. The electronic circuitry is configured or operable to perform symbol detection of time domain symbols comprising the block by performing a multi-stage joint detection procedure comprising plural stages, and thus serves as a detector (40). For a first stage the block is divided into a first number of sub-blocks each having a sub-block first size. For a second stage the block is divided into a second number of sub-blocks each having a sub-block second size, the sub-block second size being greater than the sub-block first size. For each stage a detector (40) formulates frequency domain combining weights and uses the frequency domain combining weights for combining multiple receive versions of each subcarrier to provide candidate symbol combination values for symbols in each sub-block of the respective stage. For the second stage the detector (40) is further configured to use the candidate symbol combination values of the first stage to formulate joint hypotheses to serve as candidates for the joint detection operation of the second stage.
摘要翻译：接收机包括多个接收天线和电子电路。多个接收天线被配置为在由无线电接口发送的多个子载波上接收包括来自时域符号块的贡献的频域信号。电子电路被配置或可操作以通过执行包括多个级的多级联合检测过程来执行包括该块的时域符号的符号检测，从而用作检测器（40）。对于第一阶段，块被分成具有子块第一大小的第一数量的子块。对于第二级，块被分成第二数量的子块，每个子块具有子块的第二尺寸，子块的第二尺寸大于子块的第一尺寸。对于每个阶段，检测器（40）制定频域组合权重并使用频域组合权重来组合每个子载波的多个接收版本，以为相应级的每个子块中的符号提供候选符号组合值。对于第二级，检测器（40）还被配置为使用第一级的候选符号组合值来形成联合假设以用作第二级的联合检测操作的候选。

7. 发明授权

US08588322B2 Method and device for soft-output detection in multiple antenna communication systems 有权
标题翻译：用于多天线通信系统中软输出检测的方法和装置
公开(公告)号：US08588322B2
公开(公告)日：2013-11-19
申请号：US12875100
申请日：2010-09-02
申请人： Massimiliano Siti , Teo Cupaiuolo , Alessandro Tomasoni , Sandro Bellini
发明人： Massimiliano Siti , Teo Cupaiuolo , Alessandro Tomasoni , Sandro Bellini
IPC分类号： H04B7/02
CPC分类号： H04L25/0202 , H04L1/06 , H04L25/03184 , H04L25/03267 , H04L25/03286 , H04L25/03318 , H04L25/03891 , H04L2025/03414 , H04L2025/03426
摘要： An embodiment of a method and device for detecting a signal and generating bit soft-output of a multiple-input multiple-output system is provided. The device includes at least one channel estimates pre-processing unit, one received vector processing and one detection and soft-output generation unit. The pre-processing unit calculates multiple QR Decompositions of the input channel estimation matrix. The detection and soft-output generation unit computes near optimal bit soft output information with a deterministic complexity and latency. It may implement a reduced complexity search method. Globally, embodiments of the invention may allow achieving low complexity, high data rate, scalability in terms of the dimension of the MIMO system and flexibility versus the supported modulation order, all potentially key factors for most MIMO wireless transmission applications.
摘要翻译：提供了用于检测信号并产生多输入多输出系统的位软输出的方法和装置的实施例。该设备包括至少一个信道估计预处理单元，一个接收向量处理和一个检测和软输出生成单元。预处理单元计算输入信道估计矩阵的多个QR分解。检测和软输出生成单元以确定性的复杂性和延迟计算近似最优位软输出信息。它可以实现降低复杂度的搜索方法。在全球范围内，本发明的实施例可以允许在MIMO系统的尺寸方面实现低复杂度，高数据速率，可扩展性以及所支持的调制阶数的灵活性，这些都是大多数MIMO无线传输应用的潜在关键因素。

8. 发明授权

US08582696B2 Method and apparatus for data quantization and packing with variable bit width and period 失效
标题翻译：用于可变位宽度和周期的数据量化和打包的方法和装置
公开(公告)号：US08582696B2
公开(公告)日：2013-11-12
申请号：US13407876
申请日：2012-02-29
申请人： Seokyong Oh , Thomas Sun , Raghuraman Krishnamoorthi
发明人： Seokyong Oh , Thomas Sun , Raghuraman Krishnamoorthi
IPC分类号： H04L27/06
CPC分类号： H04L25/03184 , H04L25/067
摘要： The various embodiments provide circuitry and methods for packing Log Likelihood Ratio (“LLR”) values into a buffer memory in a compressed format which reduces the amount of buffer memory required. Various embodiments use a type of quantization which reduces the bit width of the LLR values that are stored, with the particular level of quantization depending upon the code rate of the data. The degree, pattern, and periodicity of bit width compression employed may depend upon the code rate of the received transmission. Bit width patterns use for LLR value quantization may be generated by a shift register circuit which provides an efficient mechanism for controlling an LLR packer circuit based upon the code rate of the received signal.
摘要翻译：各种实施例提供用于将对数似然比（“LLR”）值以压缩格式打包到缓冲存储器中的电路和方法，其减少了所需的缓冲存储器的量。各种实施例使用一种类型的量化，其根据数据的码率降低具有特定的量化水平的存储的LLR值的位宽度。所采用的位宽度压缩的程度，模式和周期可能取决于接收到的传输的码率。用于LLR值量化的位宽度图案可以由移位寄存器电路产生，该移位寄存器电路基于接收信号的码率提供用于控制LLR封隔器电路的有效机构。

9. 发明授权

US08401115B2 Detector using limited symbol candidate generation for MIMO communication systems 有权
标题翻译：用于MIMO通信系统的有限符号候选生成的检测器
公开(公告)号：US08401115B2
公开(公告)日：2013-03-19
申请号：US12045786
申请日：2008-03-11
申请人： Kiarash Amiri , Raghavendar Mysore Rao , Christopher H. Dick , Joseph R. Cavallaro
发明人： Kiarash Amiri , Raghavendar Mysore Rao , Christopher H. Dick , Joseph R. Cavallaro
IPC分类号： H04L27/00
CPC分类号： H04L25/03203 , H04L1/06 , H04L25/0208 , H04L25/0246 , H04L25/03184 , H04L25/03216 , H04L25/03292 , H04L2025/03426
摘要： A circuit detects symbols transmitted from multiple transmitting antennas to multiple receiving antennas. A distance block for an initial transmitting antenna in an ordering of the transmitting antennas determines a distance value for each symbol in a constellation. A selector block selects a limited number of candidates for the initial transmitting antenna from the symbols having smaller distance values. For each first and successive second transmitting antenna in the ordering, a distance-selector block selects a candidate for the second transmitting antenna for each candidate for the first transmitting antenna. The candidate for the second transmitting antenna is a pairing having a smaller distance value among the pairings of the candidate for the first transmitting antenna and the symbols. An identifier block selects a last candidate having a smaller distance value among the candidates for a last transmitting antenna in the ordering. The last candidate includes the detected symbols.
摘要翻译：电路检测从多个发送天线发送到多个接收天线的符号。在发射天线的排序中用于初始发射天线的距离块确定星座中每个符号的距离值。选择器块从具有较小距离值的符号中选择用于初始发射天线的有限数量的候选。对于排序中的每个第一和连续的第二发射天线，距离选择器块为第一发射天线的每个候选选择第二发射天线的候选。第二发送天线的候选者是在第一发送天线和符号的候选对的配对中具有较小距离值的配对。标识符块在排序中选择最后发射天线的候选中具有较小距离值的最后候选。最后一个候选人包括检测到的符号。

10. 发明授权

US08279981B2 Method for post detection improvement in MIMO 有权
标题翻译： MIMO中后检测改进方法
公开(公告)号：US08279981B2
公开(公告)日：2012-10-02
申请号：US12604570
申请日：2009-10-23
申请人： Ali S. Khayrallah
发明人： Ali S. Khayrallah
IPC分类号： H04L27/06
CPC分类号： H04L25/03305 , H04L25/03184 , H04L25/03331 , H04L2025/03426
摘要： A two-stage approach to MIMO detection improves receiver performance in a computationally tractable manner. A whitening joint detector processes a MIMO symbol stream. The whitening joint detector includes a pre-filter operative to suppress a first subset of the received MIMO streams as colored noise. The whitening joint detector further includes a primary joint detector operative to process a second subset of the MIMO streams and to output a preliminary solution obtained by minimizing a whitening joint detection metric. A secondary detector then operates in the vicinity of the primary joint detector preliminary solution. The secondary detector improves the preliminary solution by comparison to a full joint detection metric.
摘要翻译： MIMO检测的两阶段方法以计算容易的方式改善了接收机的性能。美白联合检测器处理MIMO符号流。美白联合检测器包括一个预滤波器，用于将接收的MIMO流的第一子集抑制为有色噪声。美白联合检测器还包括主接头检测器，其操作以处理MIMO流的第二子集，并输出通过使美白关节检测度量最小化获得的初步解。次级检测器然后在主接头检测器初步解决方案附近操作。二次检测器通过与全关节检测度量相比较来改善初步解决方案。

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