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1. 发明授权

US06529495B1 Method and apparatus for providing differencing multistage detection in the reverse link of a code division multiple access communication system 失效
标题翻译：用于在码分多址通信系统的反向链路中提供差分多级检测的方法和装置
公开(公告)号：US06529495B1
公开(公告)日：2003-03-04
申请号：US09317333
申请日：1999-05-24
申请人： Behnaam Aazhang , Joseph R. Cavallaro , Gang Xu
发明人： Behnaam Aazhang , Joseph R. Cavallaro , Gang Xu
IPC分类号： H04B7216
CPC分类号： H04B1/71052 , H04B1/71075
摘要： A multistage detector is disclosed that maximizes computation power while minimizing system delay. The differencing multistage detector receives signals from a plurality of users in a cell of a communications system and reduces the effect of multiple access interference to a signal from a desired user caused by interference from other users in the cell. The differencing multistage detector includes a plurality of stages, each stage including an interference canceller for removing intra-cell interference caused by the other users in the cell and producing an estimation output vector, wherein except for a first stage, the estimation output vector of a current stage is based on both a decision of the interference canceller of the current stage and the output from an interference canceller of a previous stage. The estimation output vector of a current stage is produced by combining the output from an interference canceller of a previous stage and the decision of the interference canceller of the current stage. Except for the first stage each interference canceller calculates an estimate of multi-user interference by computing a product of a cross-correlation of the received signals and a difference signal thereby reducing the number of multiplication operations required.
摘要翻译：公开了一种最大化计算能力同时最小化系统延迟的多级检测器。差分多级检测器从通信系统的小区中的多个用户接收信号，并且减少由来自小区中其他用户的干扰引起的来自期望用户的信号的多址接入干扰的影响。差分多级检测器包括多级，每级包括干扰消除器，用于消除由小区中的其他用户引起的小区内干扰，并产生估计输出向量，其中除了第一级以外，估计输出向量当前阶段基于当前阶段的干扰消除器的决定和来自前一级的干扰消除器的输出。通过组合来自前一级的干扰消除器的输出和当前级的干扰消除器的判定来产生当前级的估计输出向量。除了第一阶段之外，每个干扰消除器通过计算接收信号的互相关乘积和差分信号来计算多用户干扰的估计，从而减少所需的乘法运算次数。

2. 发明申请

US20110080964A1 ADAPTIVE CODEBOOK FOR BEAMFORMING IN LIMITED FEEDBACK MIMO SYSTEMS 审中-公开
标题翻译：用于有限反馈MIMO系统中的自适应代码
公开(公告)号：US20110080964A1
公开(公告)日：2011-04-07
申请号：US12808141
申请日：2007-12-12
申请人： Davood Shamsi , Kiarash Amiri , Behnaam Aazhang , Joseph R. Cavallaro , Jorma Olavi Lilleberg
发明人： Davood Shamsi , Kiarash Amiri , Behnaam Aazhang , Joseph R. Cavallaro , Jorma Olavi Lilleberg
IPC分类号： H04L27/28
CPC分类号： H04B7/0619 , H04B7/0417
摘要： A method for beamforming is described. The method includes generating a pseudo-random unitary matrix. A first codebook is rotated with the pseudo-random unitary matrix. The method includes generating a second codebook based upon the rotated codebook and a correlation matrix. A codeword is selected from the second codebook using a channel matrix. The correlation matrix is updated based upon the selected codeword. The method includes transmitting an index of the selected codeword in the codebook. The method includes receiving the codeword index. A codebook is consulted using the codeword index to locate a codeword. Beamforming is performed based upon the located codeword. An apparatus is also described.
摘要翻译：描述了波束成形的方法。该方法包括生成伪随机酉矩阵。第一码本用伪随机酉矩阵旋转。该方法包括基于旋转的码本和相关矩阵生成第二码本。使用信道矩阵从第二码本中选择码字。基于选择的码字来更新相关矩阵。该方法包括在码本中发送所选码字的索引。该方法包括接收码字索引。使用码字索引查询码本以定位码字。基于定位的码字执行波束形成。还描述了一种装置。

3. 发明授权

US08767849B2 Method and device for inter-chip and inter-antenna interference cancellation 有权
标题翻译：用于芯片间和天线间干扰消除的方法和装置
公开(公告)号：US08767849B2
公开(公告)日：2014-07-01
申请号：US13405134
申请日：2012-02-24
申请人： Bei Yin , Kiarash Amiri , Joseph R. Cavallaro , Yuanbin Guo
发明人： Bei Yin , Kiarash Amiri , Joseph R. Cavallaro , Yuanbin Guo
IPC分类号： H04K1/10 , H04L27/28 , H04L25/03 , H04J11/00 , H04B1/7107
CPC分类号： H04J11/004 , H04B1/71072 , H04L25/03159
摘要： A wireless receiver is constructed to equalize a time-domain received signal, detect a plurality of symbols of the equalized time-domain received signal, and perform interference cancellation on the time-domain received signal. The interference cancellation can be performed using a partial result produced by an IDFT, and may use only neighboring symbols in a detected plurality of symbols. The resulting wireless receiver can be constructed to operate efficiently under a plurality of wireless standards.
摘要翻译：构造无线接收机以均衡时域接收信号，检测均衡的时域接收信号的多个符号，并对时域接收信号执行干扰消除。可以使用由IDFT产生的部分结果来执行干扰消除，并且可以仅使用检测到的多个符号中的相邻符号。所得到的无线接收机可被构造成在多种无线标准下有效地工作。

4. 发明申请

US20120240003A1 Method, Apparatus, Computer Program Product and Device Providing Semi-Parallel Low Density Parity Check Decoding Using a Block Structured Parity Check Matrix 有权
标题翻译：方法，装置，使用块结构奇偶校验矩阵提供半平行低密度奇偶校验解码的计算机程序产品和设备
公开(公告)号：US20120240003A1
公开(公告)日：2012-09-20
申请号：US13479745
申请日：2012-05-24
申请人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
发明人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
IPC分类号： H03M13/11 , G06F11/10
CPC分类号： H03M13/1148 , H03M13/1137 , H03M13/114 , H03M13/6566
摘要： The invention relates to low density parity check decoding. A method for decoding an encoded data block is described. Encoded data block comprising data sub-blocks are stored. Decoding is performed in a pipelined manner using an irregular, block-structured parity check matrix, where at least two data sub-block matrices of the parity check matrix are read from and written in each of a plurality of clock cycles. The reading and writing of the data sub-blocks is evenly distributed between at least two area of a memory. The decoding is performed with shift values which eliminate cycles at or below a predetermined threshold length. An apparatus, computer program product and device are also described.
摘要翻译：本发明涉及低密度奇偶校验解码。描述用于解码编码数据块的方法。存储包括数据子块的编码数据块。使用不规则的块结构的奇偶校验矩阵以流水线方式执行解码，其中奇偶校验矩阵的至少两个数据子块矩阵从多个时钟周期中的每一个读出并写入。数据子块的读取和写入被均匀分布在存储器的至少两个区域之间。以等于或低于预定阈值长度的周期的移位值执行解码。还描述了一种装置，计算机程序产品和装置。

5. 发明授权

US08059761B2 Detecting in-phase and quadrature-phase amplitudes of MIMO communications 有权
标题翻译：检测MIMO通信的同相和正交相位幅度
公开(公告)号：US08059761B2
公开(公告)日：2011-11-15
申请号：US12170474
申请日：2008-07-10
申请人： Kiarash Amiri , Christopher H. Dick , Raghavendar Mysore Rao , Joseph R. Cavallaro
发明人： Kiarash Amiri , Christopher H. Dick , Raghavendar Mysore Rao , Joseph R. Cavallaro
IPC分类号： H04L27/06
CPC分类号： H04L25/03229 , H04L25/0246 , H04L25/03968
摘要： Circuits detect communications from multiple transmitting antennas to multiple receiving antennas. A respective first block for each non-initial transmitting antenna determines partial distances for pairings of a first candidate and a quadrature-phase amplitude. A respective second block for the initial transmitting antenna determines partial distances for combinations of phase amplitudes. A respective second block for each non-initial transmitting antenna determines partial distances for pairings of a second candidate and an in-phase amplitude. A respective first selector for each non-initial transmitting antenna selects the first candidates from the pairings for the respective second block having smaller partial distances. A respective second selector for each non-initial transmitting antenna selects the second candidates from the pairings for the respective first block having smaller partial distances. An identifier circuit selects a final candidate with a smaller partial distance from the pairings of the respective second block for the last transmitting antenna.
摘要翻译：电路检测从多个发射天线到多个接收天线的通信。每个非初始发射天线的相应的第一块确定用于第一候选和正交相位振幅的配对的部分距离。用于初始发射天线的相应的第二块确定相位振幅的组合的部分距离。每个非初始发射天线的相应的第二块确定第二候选的配对和同相幅度的部分距离。每个非初始发射天线的相应的第一选择器从具有较小部分距离的相应第二块的配对中选择第一候选。每个非初始发射天线的相应的第二选择器从具有较小部分距离的相应第一块的配对中选择第二候选。标识符电路从最后发射天线的相应第二块的配对中选择具有较小部分距离的最终候选。

6. 发明授权

US08219876B2 Method, apparatus, computer program product and device providing semi-parallel low density parity check decoding using a block structured parity check matrix 有权
标题翻译：使用块结构奇偶校验矩阵提供半并行低密度奇偶校验解码的方法，装置，计算机程序产品和设备
公开(公告)号：US08219876B2
公开(公告)日：2012-07-10
申请号：US11977644
申请日：2007-10-24
申请人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
发明人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
IPC分类号： H03M13/00 , G11C29/00
CPC分类号： H03M13/1148 , H03M13/1137 , H03M13/114 , H03M13/6566
摘要： The invention relates to low density parity check decoding. A method for decoding an encoded data block is described. Encoded data block comprising data sub-blocks are stored. Decoding is performed in a pipelined manner using an irregular, block-structured parity check matrix, where at least two data sub-block matrices of the parity check matrix are read from and written in each of a plurality of clock cycles. The reading and writing of the data sub-blocks is evenly distributed between at least two area of a memory. The decoding is performed with shift values which eliminate cycles at or below a predetermined threshold length. An apparatus, computer program product and device are also described.
摘要翻译：本发明涉及低密度奇偶校验解码。描述用于解码编码数据块的方法。存储包括数据子块的编码数据块。使用不规则的块结构的奇偶校验矩阵以流水线方式执行解码，其中奇偶校验矩阵的至少两个数据子块矩阵从多个时钟周期中的每一个读出并写入。数据子块的读取和写入被均匀分布在存储器的至少两个区域之间。以等于或低于预定阈值长度的周期的移位值执行解码。还描述了一种装置，计算机程序产品和装置。

7. 发明授权

US07706430B2 System, apparatus, and method for adaptive weighted interference cancellation using parallel residue compensation 有权
标题翻译：使用并行残差补偿的自适应加权干扰消除的系统，装置和方法
公开(公告)号：US07706430B2
公开(公告)日：2010-04-27
申请号：US11067498
申请日：2005-02-25
申请人： Yuanbin Guo , Dennis McCain , Joseph R. Cavallaro
发明人： Yuanbin Guo , Dennis McCain , Joseph R. Cavallaro
IPC分类号： H04L27/06
CPC分类号： H04B1/71075 , H04B2001/71077 , H04B2201/70707
摘要： A system, apparatus and method for a multi-stage Parallel Residue Compensation (PRC) receiver for enhanced suppression of the Multiple Access Interference (MAI) in Code Division Multiple Access (CDMA) systems. The accuracy of the interference estimation is improved with a set of weights computed from an adaptive Normalized Least Mean Square (NLMS) algorithm. In order to reduce complexity, the commonality of the multi-code processing is extracted and used to derive a structure of PRC to avoid direct interference cancellation. The derived PRC structure reduces the interference cancellation architecture from a complexity that is proportional to the square of the number of users to a complexity that is linear with respect to the number of users. The complexity is further reduced by replacing dedicated multiplier circuits with simple combinational logic.
摘要翻译：一种用于增强抑制码分多址（CDMA）系统中的多址干扰（MAI）的多级并行残差补偿（PRC）接收机的系统，装置和方法。通过从自适应归一化最小二乘法（NLMS）算法计算的一组权重，改善了干扰估计的准确性。为了降低复杂度，提取多码处理的通用性，并用于导出PRC的结构，以避免直接干扰消除。导出的PRC结构从与用户数量的平方成正比于与用户数量相关的复杂度的复杂度降低了干扰消除架构。通过用简单的组合逻辑替换专用乘法电路，进一步降低了复杂度。

8. 发明申请

US20090232254A1 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产生检测器
公开(公告)号：US20090232254A1
公开(公告)日：2009-09-17
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。

9. 发明申请

US20090113276A1 Method, apparatus, computer program product and device providing semi-parallel low density parity check decoding using a block structured parity check matrix 有权
标题翻译：使用块结构奇偶校验矩阵提供半并行低密度奇偶校验解码的方法，装置，计算机程序产品和设备
公开(公告)号：US20090113276A1
公开(公告)日：2009-04-30
申请号：US11977644
申请日：2007-10-24
申请人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
发明人： Predrag Radosavljevic , Marjan Karkooti , Alexandre de Baynast , Joseph R. Cavallaro
IPC分类号： H03M13/00
CPC分类号： H03M13/1148 , H03M13/1137 , H03M13/114 , H03M13/6566
摘要： The invention relates to low density parity check decoding. A method for decoding an encoded data block is described. Encoded data block comprising data sub-blocks are stored. Decoding is performed in a pipelined manner using an irregular, block-structured parity check matrix, where at least two data sub-block matrices of the parity check matrix are read from and written in each of a plurality of clock cycles. The reading and writing of the data sub-blocks is evenly distributed between at least two area of a memory. The decoding is performed with shift values which eliminate cycles at or below a predetermined threshold length. An apparatus, computer program product and device are also described.
摘要翻译：本发明涉及低密度奇偶校验解码。描述用于解码编码数据块的方法。存储包括数据子块的编码数据块。使用不规则的块结构的奇偶校验矩阵以流水线方式执行解码，其中奇偶校验矩阵的至少两个数据子块矩阵从多个时钟周期中的每一个读出并写入。数据子块的读取和写入被均匀分布在存储器的至少两个区域之间。以等于或低于预定阈值长度的周期的移位值执行解码。还描述了一种装置，计算机程序产品和装置。

10. 发明授权

US08027404B1 Limiting candidates for symbol detection in a MIMO communication system 有权
标题翻译：在MIMO通信系统中限制符号检测的候选
公开(公告)号：US08027404B1
公开(公告)日：2011-09-27
申请号：US12025971
申请日：2008-02-05
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： H04B7/02
CPC分类号： H04L25/0204 , H04L25/0246 , H04L25/03292
摘要： A circuit detects symbols communicated between multiple transmitting antennas and multiple receiving antennas (MIMO). Distance blocks are coupled in a sequence according to an ordering of the transmitting antennas. The respective distance block associated with each transmitting antenna determines a distance value for each pairing of one or more candidates and a symbol in a constellation. A respective selector block is coupled between each successive pair of distance blocks in the sequence. The respective selector block selects the one or more candidates for the successive distance block as a limited number of the pairings having smaller ones of the distance values. A limit block coupled to the selector blocks provides the limited number to each selector block. An identifier block selects the pairing having a smaller one of the distance values from the last distance block in the sequence.
摘要翻译：电路检测在多个发射天线和多个接收天线（MIMO）之间通信的符号。距离块根据发射天线的顺序按顺序耦合。与每个发射天线相关联的相应距离块确定一个或多个候选者和星座中的符号的每个配对的距离值。相应的选择器块在序列中的每个连续的一对距离块之间耦合。相应的选择器块选择连续距离块的一个或多个候选作为具有较小距离值的配对的有限数量。耦合到选择器块的极限块为每个选择器块提供有限的数量。标识符块从序列中的最后一个距离块中选择距离值较小的配对。

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