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21. 发明公开

EP3145138A4 DATA PROCESSING METHOD AND DEVICE FOR MAXIMUM LIKELIHOOD (ML) RECEIVER 审中-公开
标题翻译： DATENVERARBEITUNGSVERFAHREN UND VORRICHTUNGFÜRMAXIMUM LIKELIHOOD（ML）-EMPFÄNGER
公开(公告)号：EP3145138A4
公开(公告)日：2017-06-07
申请号：EP15810605
申请日：2015-05-25
申请人： HUAWEI TECH CO LTD
发明人： WANG HAO
IPC分类号： H04L25/02
CPC分类号： H04L5/0073 , H04J11/005 , H04L5/0048 , H04L5/006 , H04L25/022 , H04L25/0242 , H04L25/03197 , H04L25/03292 , H04L25/03305 , H04L25/03318
摘要： A data processing method and apparatus for an ML receiver relates to the field of communications technologies, and can resolve a problem that parameters required by an ML receiver cannot be accurately estimated and an interference cancellation capability of the ML receiver is reduced. The method in the present invention includes: performing, by an ML receiver, channel estimation on a serving cell and an interference cell by using signals received at reference signal locations, to obtain channel estimation matrix; calculating first metrics for received signals and the channel estimation matrix, and determining survivor paths of the serving cell according to the first metrics; calculating second metrics for the received signals and the channel estimation matrix according to the determined survivor paths of the serving cell and all values of an unknown parameter, and determining survivor paths of the interference cell according to the second metrics; determining final survivor paths according to the survivor paths of the interference cell; and calculating an LLR according to the final survivor paths. The present invention is applicable to an ML receiver.
摘要翻译：一种ML接收机的数据处理方法和装置涉及通信技术领域，可以解决ML接收机所需参数无法准确估计，降低ML接收机的干扰抵消能力的问题。本发明的方法包括：ML接收机利用参考信号位置接收到的信号对服务小区和干扰小区进行信道估计得到信道估计矩阵; 计算接收信号的第一度量和信道估计矩阵，并根据第一度量确定服务小区的幸存路径; 根据确定的服务小区的幸存路径和未知参数的全部值计算接收信号和信道估计矩阵的第二度量，根据第二度量确定干扰小区的生存者路径; 根据干扰小区的幸存路径确定最终幸存路径; 并根据最终幸存路径计算LLR。本发明适用于ML接收机。

22. 发明公开

EP2865122A2 HIGHLY-SPECTRALLY-EFFICIENT TRANSMISSION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 审中-公开
标题翻译：在HOHEM MASSE SPEKTRUMSEFFIZIENTEÜBERTRAGUNGMITTELS OFDM
公开(公告)号：EP2865122A2
公开(公告)日：2015-04-29
申请号：EP13823230.1
申请日：2013-06-19
申请人： Magnacom Ltd. , Eliaz, Amir , Reuven, Ilan
发明人： ELIAZ, Amir , REUVEN, Ilan
IPC分类号： H04L1/00
CPC分类号： H04L27/2628 , H04L1/0054 , H04L25/02 , H04L25/03038 , H04L25/03159 , H04L25/03197 , H04L25/03821 , H04L25/497 , H04L27/2647 , H04L27/3405 , H04L2025/03414 , H04L2025/0342 , H04L2025/03522
摘要： A transmitter may map, using a selected modulation constellation, each of C' bit sequences to a respective one of C' symbols, where C' is a number greater than one. The transmitter may process the C' symbols to generate C' inter-carrier correlated virtual subcarrier values. The transmitter may decimate the C virtual subcarrier values down to C physical subcarrier values, C being a number less than C'. The transmitter may transmit the C physical subcarrier values on C orthogonal frequency division multiplexed (OFDM) subcarriers. The modulation constellation may be an N-QAM constellation, where N is an integer. The processing may comprise filtering the C' symbols using an array of C' filter tap coefficients. The filtering may comprise cyclic filtering. The filtering may comprise multiplication by a circulant matrix populated with the C' filter tap coefficients.
摘要翻译：用于接收机的电路可以包括：前端电路，其可操作以在第一数量的物理子载波上接收正交频分复用（OFDM）符号。电路可以包括解码电路，其可操作以使用载波间干扰（ICI）模型来解码OFDM符号，所述解码导致确定符号序列，其包括第二数量的符号，其最可能对应于接收的OFDM符号，其中第二个数字大于第一个数字。符号序列可以包括N-QAM符号，N是整数。至少部分地，ISCI模型可以基于发送器发送期间由OFDM符号经历的非线性度，通过信道传播和/或接收器的接收。 ISCI模型至少部分地基于由发射机传输期间引入到OFDM符号的相位噪声，在信道上传播和/或由接收机接收。

23. 发明公开

EP2481192A1 CALCULATION OF SOFT VALUES FOR UPLINK COMMUNICATION 有权
标题翻译：计算用于上行链路通信的软值
公开(公告)号：EP2481192A1
公开(公告)日：2012-08-01
申请号：EP09783422.0
申请日：2009-09-25
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： SAHLIN, Henrik
IPC分类号： H04L25/03
CPC分类号： H04L25/03197 , H04L25/03216 , H04L25/03318
摘要： The present invention relates to a node (1) in a wireless communication network (2), the node (1) comprising a receiver (3) arranged for receiving at least two signals streams comprising bit sequences, and for evaluating which bit sequence that is most likely to have been received for a certain sent symbol for each signal stream. The receiver is also arranged for calculating metrics (34, 35, 36, 37, 38, 39, 40, 41; 42, 43, 44, 45, 46, 47, 48, 49) indicative of which bit sequence that initially is most likely to correspond to a certain sent symbol, the metrics (34, 35, 36, 37, 38, 39, 40, 41; 42, 43, 44, 45, 46, 47, 48, 49) further being used a soft value calculation where the receiver (3) is arranged for addition of metric data for a certain signal stream corresponding to an added bit sequence (f) for each case where the available metrics (42, 43, 44, 45, 46, 47, 48, 49) are incomplete for performing the estimation The missing bit is inserted in the added bit sequence in the place where it is missing, and is chosen such that it also corresponds to a symbol (51b) with the shortest Euclidian distance to the symbol (14b) with the said corresponding bit sequence (14; i, f, c) that initially is indicated to be most likely to correspond to a certain sent symbol.

24. 发明授权

EP1763935B1 SYSTEM AND METHOD FOR MAXIMUM LIKELIHOOD DECODING IN MIMO WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：系统及方法无线MIMO通信系统的最大似然译码
公开(公告)号：EP1763935B1
公开(公告)日：2011-05-25
申请号：EP05752043.9
申请日：2005-06-27
申请人： Koninklijke Philips Electronics N.V.
发明人： OUYANG, Xuemei , LI, Pen C. , GHOSH, Monisha
IPC分类号： H04L1/00 , H04L25/03
CPC分类号： H04L1/06 , H04L25/03197
摘要： A system and method for a simplified Maximum Likelihood (ML) decoding (203) for MIMO systems is provided. The full ML decoding gives the lower bound of the decoding for CC coded MIMO systems. However, the computation cost is too high to be implemented in real system. Many alternative methods have been proposed for the decoding. Among them, weighted Zero Forcing (WZF) is one that can give affordable performance with reasonable computation complexity but there are several dB of performance gap for the WZF decoding and ML decoding. This present invention discloses a decoding system and method having improved performance over WZF decoding with affordable implementation complexity.

25. 发明公开

EP2124345A1 Sphere decoding apparatus for MIMO channel 审中-公开
标题翻译： SPHÄRENDECODIERVORRICHTUNGFÜREINEN MIMO-KANAL
公开(公告)号：EP2124345A1
公开(公告)日：2009-11-25
申请号：EP09169034.7
申请日：2006-06-01
申请人： Qualcomm Incorporated
发明人： Kadous, Tamer , Sampath, Hemanth
IPC分类号： H03M13/41 , H04L1/06 , H04B7/08
CPC分类号： H04L25/03242 , H03M13/45 , H04B7/04 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0048 , H04L1/0066 , H04L1/06 , H04L1/0631 , H04L1/0656 , H04L25/03197 , H04L27/2601 , H04L27/38 , H04L2025/03414
摘要： Method and apparatuses for decoding codewords over a MIMO channel are provided. According to one aspect of the disclosure, a cost function is computed for each constellation point of an Mth rank or spatial layer and N cand of those constellation points having minimum cost are preserved as candidate points, where N cand is a parameter specified to the decoding algorithm. In addition, a cost function may be computed for all possible transitions from the N cand candidate points of the Mth rank to ail possible constellations points of the (M-1)th spatial layer, and A^ of those transitions having minimum cost are preserved as candidate points. The process is repeated for all spatial layers, resulting in the identification of N cand candidate codewords and their associated cost functions. The algorithm is derived from the list sphere decoding method.
摘要翻译：提供了用于在MIMO信道上解码码字的方法和装置。根据本公开的一个方面，为第M级或空间层的每个星座点计算成本函数，并且将具有最小成本的那些星座点的N cand保留为候选点，其中N cand是为解码指定的参数算法。另外，可以计算从第M级的N个候选点到第（M-1）个空间层的可能的星座点的所有可能的转换的成本函数，并且保留具有最小成本的那些转换的A ^ 作为候选点。对所有空间层重复该过程，导致N个候选候选码字及其相关成本函数的识别。该算法从列表球体解码方法得出。

26. 发明公开

EP2051462A2 Verfahren und Vorrichtung zur Detektion von Sendesignalen in einer Multi-Layer-Übertragung 有权
公开(公告)号：EP2051462A2
公开(公告)日：2009-04-22
申请号：EP08016204.3
申请日：2008-09-15
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Detert, Thorben
IPC分类号： H04L25/03
CPC分类号： H04L25/0246 , H04L25/03006 , H04L25/03178 , H04L25/03184 , H04L25/03197 , H04L2025/03426
摘要： Ein Verfahren und eine Vorrichtung zur Detektion von mehreren, von jeweils einer Sendeantenne abgestrahlten Sendesignalen ( s ) aus mehreren, in jeweils einer Empfangsantenne empfangenen Empfangssignalen ( ) führt eine Q·R -Zerlegung einer Übertragungskanalmatrix ( H ) in eine orthogonale Matrix Q = H und eine Dreiecksmatrix (R) durch. Die Übertragungskanalmatrix ( H ) weist gegenüber einer Übertragungskanalmatrix ( H ) zwischen den einzelnen Sende- und den einzelnen Empfangsantennen verlängerte, mit jeweils einem Faktor η besetzte Spaltenvektoren ( ) auf. Das Verfahren ermittelt eine Metrik ( M ( s̃ ) aus der betragsquadrierten Differenz ‖ Q = H ⋅ r ̲ = - R = ⋅ s ˜ ‖ 2 zwischen den mit der orthogonalen Matrix Q = H vorgefilterten Empfangssignalen Q = H ⋅ r ̲ = und den mit der Dreiecksmatrix ( R ) gewichteten, zu den einzelnen Sendesignalen ( s ) jeweils gehörigen Hypothesen ( s̃ ) und schätzt die Sendesignale ( s ) durch Minimierung der Metrik ( M ( s̃ )).
摘要翻译：该方法涉及分析正交矩阵和三角矩阵中的传输信道矩阵。信道矩阵在发射和接收天线之间被扩展，并且被提供有被分配有与信道矩阵相反的因子的列向量。由正交矩阵预滤波的接收信号与对应于用三角矩阵加权的假设的传输信号之间的幅度平方差确定度量。传输信号的估值通过度量的最小化来确定。还包括用于检测来自接收信号的传输信号的设备的独立权利要求，包括初级过滤器。

27. 发明授权

EP0904650B1 TRANSMITTER FOR QAM ENCODED DATA 失效
标题翻译：站进行QAM编码数据
公开(公告)号：EP0904650B1
公开(公告)日：2007-09-12
申请号：EP97925603.9
申请日：1997-05-19
申请人： Ericsson Inc.
发明人： DENT, Paul, W.
IPC分类号： H04L27/34
CPC分类号： H04L25/03197 , H04L1/0054 , H04L25/0226 , H04L25/03292 , H04L27/0008 , H04L27/2017 , H04L27/3488 , H04L27/362
摘要： Quadrature Amplitude Modulated signals are generated from data bits by using a first Quadrature Phase Shift Keying (QPSK) modulator for encoding a first pair of the data bits into one of four carrier signal phases, thereby producing a firs QPSK signal. A second QPSK modulator encodes a second pair of the data bits into one of four carrier signal phases, thereby producing a second QPSK signal. The first QPSK signal is amplified to a first power level, and the second QPSK signal is amplified to a second power level. The first and second amplified signals are then combined to produce a signal in which four data bits are encoded. In another aspect of the invention, a new type of modulation, called Offset Quadrature Phase Shift Keying (OQPSK), is used in place of the first and second QPSK modulators, so that an Offset Quadrature Amplitude Modulation (OQAM) transmitter is formed. An OQPSK modulator encodes data bits by encoding a first sub-group of the data bits into a real part of a complex signal at an odd instant of a clock, and by encoding a second sub-group of the data bits into an imaginary part of the complex signal at an even instant of the clock. OQPSK modulation provides the benefit of having all signal transitions being constrained to trajectories around constant radius circles, thereby producing spectral efficiency.

28. 发明公开

EP1763935A2 SYSTEM AND METHOD FOR MAXIMUM LIKELIHOOD DECODING IN MIMO WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：系统及方法无线MIMO通信系统的最大似然译码
公开(公告)号：EP1763935A2
公开(公告)日：2007-03-21
申请号：EP05752043.9
申请日：2005-06-27
申请人： Koninklijke Philips Electronics N.V.
发明人： OUYANG, Xuemei , LI, Pen C. , GHOSH, Monisha
IPC分类号： H04L1/00
CPC分类号： H04L1/06 , H04L25/03197
摘要： A system and method for a simplified Maximum Likelihood (ML) decoding (203) for MIMO systems is provided. The full ML decoding gives the lower bound of the decoding for CC coded MIMO systems. However, the computation cost is too high to be implemented in real system. Many alternative methods have been proposed for the decoding. Among them, weighted Zero Forcing (WZF) is one that can give affordable performance with reasonable computation complexity but there are several dB of performance gap for the WZF decoding and ML decoding. This present invention discloses a decoding system and method having improved performance over WZF decoding with affordable implementation complexity.

29. 发明授权

EP1393514B1 VERFAHREN UND SCHALTUNGSANORDNUNG ZUR ÜBERTRAGUNG VON DATEN ZWISCHEN EINEM PROZESSOR UND EINEM HARDWARE-RECHENWERK 有权
标题翻译：方法和电路装置数据之间的处理器和硬件处理单元传输
公开(公告)号：EP1393514B1
公开(公告)日：2006-08-23
申请号：EP02748568.9
申请日：2002-06-06
申请人： Infineon Technologies AG
发明人： BECKER, Burkhard
IPC分类号： H04L25/03 , H04L1/00
CPC分类号： H03M13/6331 , H03M13/4169 , H03M13/6502 , H03M13/6569 , H04L25/03197
摘要： The invention relates to a method for transmitting data of several data types between a digital processor and a hardware arithmetic-logic unit, to which at least one table memory is allocated. According to the method, a table-memory base address, which is dependent on the data type of the data to be transmitted, is first selected. Then, read and/or write access to the table memory is obtained, the address of the table memory that is used for the read/write access being calculated for each access operation according to an arithmetic calculation rule, starting from the selected base address.

30. 发明授权

EP1179936B1 Demodulator für CPFSK-modulierte Signale unter Verwendung einer linearen Näherung des CPFSK-Signals 有权
标题翻译：解调器，用于使用所述信号CPFSK的线性近似CPFSK调制信号
公开(公告)号：EP1179936B1
公开(公告)日：2004-06-09
申请号：EP01116217.9
申请日：2001-07-04
申请人： Infineon Technologies AG
发明人： Hammes, Markus , Speth, Michael , Neubauer, André , Madden, Michael
IPC分类号： H04L27/233 , H04L25/03
CPC分类号： H04L25/03197 , H04L25/03337 , H04L27/2332

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