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公开(公告)号：US08201056B2
公开(公告)日：2012-06-12
申请号：US12033306
申请日：2008-02-19
申请人： Guosen Yue , Xiaodong Wang , Mohammad Madihian
发明人： Guosen Yue , Xiaodong Wang , Mohammad Madihian
CPC分类号： H04L1/0009 , H04L1/0015
摘要： An encoding of K blocks of information for transmission on N subchannels, responsive to a number of redundant blocks M, employs one of multiple check codes depending on the number of redundant blocks M and employs multiple processes for determining a code for the K blocks of information depending on the number of redundant blocks M and K blocks of information together.
摘要翻译： 响应于多个冗余块M的用于在N个子信道上传输的K个信息块的编码根据冗余块M的数量采用多个校验码中的一个，并且采用用于确定K个信息块信息的代码的多个处理 取决于多个冗余块M和K块的信息在一起。
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公开(公告)号：US20120140850A1
公开(公告)日：2012-06-07
申请号：US13370441
申请日：2012-02-10
CPC分类号： H04L25/03006 , H04L25/03343 , H04L2025/03426
摘要： A method for wireless encoding includes encoding wireless multiple input and multiple output signals in accordance with a codebook being one of a discrete codebook restricting elements of codebook entries to be within a predetermined finite set of complex numbers and a constant amplitude codebook including each entry in its codebook having equal column norm and equal row norm. In a preferred embodiment the digital codebook further includes restricting elements of a finite set in the discrete codebook to be in the form of ka+jkb for a base-k computer and the constant amplitude codebook further includes being obtained through a series of successive householder transformations. In a preferred embodiment the codebook is configured as one of a constrained codebook in which the codebook is configured for multiple scenarios and a discrete codebook.
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63.发明授权公开(公告)号：US08023578B2
公开(公告)日：2011-09-20
申请号：US12046730
申请日：2008-03-12
IPC分类号： H04L5/12
CPC分类号： H04L27/22 , H04L25/03171 , H04L25/067 , H04L27/38
摘要： A demodulator and demodulation method includes a bit/symbol hard demodulator configured to obtain hard bit or symbol information from a received signal. At least one lookup table is configured to reference coefficients for computation of log-likelihood ratios (LLRs) from the hard bit or symbol information. A log-likelihood ratio calculation module is configured to compute bit-level LLRs from the coefficients and the received signal.
摘要翻译： 解调器和解调方法包括：位/符号硬解调器，被配置为从接收信号获得硬比特或符号信息。 至少一个查找表被配置为从硬比特或符号信息引用用于计算对数似然比（LLR）的系数。 对数似然比计算模块被配置为从系数和接收信号中计算比特级LLR。
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64.发明授权公开(公告)号：US07917176B2
公开(公告)日：2011-03-29
申请号：US11674330
申请日：2007-02-13
IPC分类号： H04B1/02
CPC分类号： H04B7/0617 , H04B7/04 , H04B7/0408 , H04B7/0413 , H04B7/0456 , H04B7/046 , H04B7/0486 , H04W52/42 , H04W88/02 , H04W88/08
摘要： A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink. User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices (CQI) which it feeds-back to the wireless downlink base station along with the index of the quantized beamforming matrix. The base station uses the CQI information to select a UE for scheduling of downlink transmission and the quantized beamforming matrix index received from the selected UE to beamform the downlink transmission to the UE. Base station overhead and is minimized while providing near-optimal performance given the constraints of a limited feed-back channel and computational complexity of the UE.
摘要翻译： 用于多天线系统的量化多级波束成形方案，例如多输入多输出（MIMO）无线下行链路。 用户设备（UE）估计下行链路信道和发射功率，并确定等级和功率分配。 然后由UE使用连续的波束形成来确定量化的波束形成矩阵。 UE还确定其反馈到无线下行链路基站的信道质量指数（CQI）以及量化波束形成矩阵的索引。 基站使用CQI信息来选择用于下行链路传输的调度的UE和从所选择的UE接收的量化的波束成形矩阵索引来波束形成到UE的下行链路传输。 给定了有限的反馈信道和UE的计算复杂度的限制，基站开销被最小化，同时提供接近最佳的性能。
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公开(公告)号：US07839835B2
公开(公告)日：2010-11-23
申请号：US11693286
申请日：2007-03-29
IPC分类号： H04J1/00
CPC分类号： H04B7/0632 , H04B7/043 , H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639
摘要： Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive preceding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal preceding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
摘要翻译： 公开了用于在一组并行通道上设计预编码器的连续多级波束形成策略（例如，连续的前述策略）的方法和装置。 连续波束成形被应用于窄带信道模型，并且还被应用于单个波束成形向量（例如，递归波束成形）的更精细量化。 第一实施例提供了高复杂度的最佳方法。 替代实施例提供了连续的波束形成，用于具有中等复杂度的接近最优先前选择。 还提供了一种用于预编码器选择的低复杂度方法，其中确定用于该组并行信道的信道代表性矩阵，并且应用所计算的信道代表上的连续波束成形。
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66.发明授权Throughput maximization using quantized rate control in multiple antenna communication 有权在多天线通信中使用量化速率控制的吞吐量最大化公开(公告)号：US07715863B2
公开(公告)日：2010-05-11
申请号：US11421731
申请日：2006-06-01
IPC分类号： H04Q7/32
CPC分类号： H04W52/248 , H04B7/04 , H04L1/0002 , H04L1/0026 , H04L1/0618
摘要： A feedback link between a receiver and a transmitter in a multiple antenna communication system is used to control the transmission rate and thereby improve system throughput performance.
摘要翻译： 多天线通信系统中的接收机和发射机之间的反馈链路用于控制传输速率，从而提高系统吞吐量性能。
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公开(公告)号：US07660363B2
公开(公告)日：2010-02-09
申请号：US11278270
申请日：2006-03-31
IPC分类号： H04B7/02
CPC分类号： H04L1/0637 , H04L25/03242 , H04L2025/03426
摘要： A lattice space time coding arrangement for transmission systems is disclosed which enables construction of lattice space time codes with improved error rate performance for arbitrary receiver structures.
摘要翻译： 公开了一种用于传输系统的格空间时间编码装置，其能够构建具有改进的任意接收机结构的错误率性能的格子空间时间码。
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68.发明授权Reduced-complexity multiple-input multiple-output (MIMO) channel detection via sequential Monte Carlo 有权通过连续蒙特卡罗进行的降低复杂度多输入多输出（MIMO）信道检测公开(公告)号：US07590195B2
公开(公告)日：2009-09-15
申请号：US11063633
申请日：2005-02-23
申请人： Xiaodong Wang , Mohammad Madihian
发明人： Xiaodong Wang , Mohammad Madihian
IPC分类号： H04L27/06
摘要： A detection system and method are disclosed which uses sequential Monte Carlo techniques in a multiple-input multiple-output system. The detection system and method samples a first and second component of the modulation symbols separately, thereby reducing the number of symbol candidates and the computational complexity of the system.
摘要翻译： 公开了一种在多输入多输出系统中使用顺序蒙特卡洛技术的检测系统和方法。 检测系统和方法分别对调制符号的第一和第二分量进行采样，从而减少符号候选的数量和系统的计算复杂度。
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69.发明授权公开(公告)号：US07580445B2
公开(公告)日：2009-08-25
申请号：US11259442
申请日：2005-10-26
申请人： Xiaodong Wang , Mohammad Madihian
发明人： Xiaodong Wang , Mohammad Madihian
CPC分类号： H04B1/7103 , H04B2201/709709 , H04J13/00
摘要： A precoding technique is herein disclosed for a spread-spectrum transmission system which advantageously addresses intersymbol interference along with multiuser and interchip interference.
摘要翻译： 本文公开了一种用于扩频传输系统的预编码技术，其有利地解码符号间干扰以及多用户和芯片间干扰。
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公开(公告)号：US20080130672A1
公开(公告)日：2008-06-05
申请号：US11950037
申请日：2007-12-04
申请人： Guosen Yue , Xiaodong Wang , Mohammad Madihian
发明人： Guosen Yue , Xiaodong Wang , Mohammad Madihian
IPC分类号： H04L29/02
CPC分类号： H04W52/42 , H04L5/0007 , H04L5/0037 , H04L5/006 , H04L5/0064 , H04W52/346
摘要： A method setting a maximum number of determinations for computing power allocation responsive to allocating power among multiple users in one subchannel of an OFDM system; beginning determination of maximum sum-throughput of users in the OFDM system with a randomly generated power profile with an iteration including: i) computing a sum-throughput using a power profile; ii) keeping a previous power profile if the sum-throughput of the current power profile sum-throughput is less than the previous power profile sum-throughput; iii) finding an index of power profile that has maximum sum-throughput; and ascertaining power profiles when the iteration is complete.
摘要翻译： 响应于在OFDM系统的一个子信道中的多个用户之间分配功率而设置用于计算功率分配的最大数量的确定的方法; 开始确定具有迭代的随机生成的功率分布的OFDM系统中的用户的最大和吞吐量，包括：i）使用功率分布计算和吞吐量; ii）如果当前功率曲线和吞吐量的和吞吐量小于先前的功率曲线和吞吐量，则保持先前的功率曲线; iii）找到具有最大和吞吐量的功率曲线的索引; 并在迭代完成时确定功率曲线。
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