专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110059705A1 ROBUST LINEAR PRECODER DESIGNS FOR MULTI-CELL DOWNLINK TRANSMISSION 有权
标题翻译：用于多小时下行链路传输的鲁棒线性预处理器设计
公开(公告)号：US20110059705A1
公开(公告)日：2011-03-10
申请号：US12878258
申请日：2010-09-09
申请人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangrajan
发明人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangrajan
IPC分类号： H04B1/04
CPC分类号： H04B7/0626 , H04B7/022
摘要： Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a worst-case sum rate are described for both full base station cooperation and limited base station cooperation scenarios. In addition, optimal equalizers are also selected to optimize the worst-case sum rate.
摘要翻译：公开了用于优化无线通信网络中的接收机设备的实用性的方法和系统。对于完整的基站合作和有限的基站合作情况，都会描述使最小最坏情况速率或最差情况下的总速率最大化的预编码器设计公式。此外，还选择最佳均衡器来优化最差情况下的和速率。

2. 发明授权

US08520762B2 Robust linear precoder designs for multi-cell downlink transmission 有权
标题翻译：用于多小区下行链路传输的鲁棒线性预编码器设计
公开(公告)号：US08520762B2
公开(公告)日：2013-08-27
申请号：US13414110
申请日：2012-03-07
申请人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
发明人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04B7/0626 , H04B7/022
摘要： Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a worst-case sum rate are described for both full base station, cooperation and limited base station cooperation scenarios. In addition, optimal equalizers are also selected to optimize the worst-case sum rate.
摘要翻译：公开了用于优化无线通信网络中的接收机设备的实用性的方法和系统。对于完整的基站，合作和有限的基站合作情况，都会描述最大化最小最坏情况速率或最差情况下的总速率的预编码器设计公式。此外，还选择最佳均衡器来优化最差情况下的和速率。

3. 发明授权

US08385454B2 Robust linear precoder designs for multi-cell downlink transmission 有权
公开(公告)号：US08385454B2
公开(公告)日：2013-02-26
申请号：US12878258
申请日：2010-09-09
申请人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
发明人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
IPC分类号： H04L1/02 , H04B7/02
CPC分类号： H04B7/0626 , H04B7/022
摘要： Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a worst-case sum rate are described for both full base station cooperation and limited base station cooperation scenarios. In addition, optimal equalizers are also selected to optimize the worst-case sum rate.

4. 发明申请

US20120170676A1 Robust Linear Precoder Designs for Multi-Cell Downlink Transmission 有权
标题翻译：用于多单元下行链路传输的鲁棒线性预测器设计
公开(公告)号：US20120170676A1
公开(公告)日：2012-07-05
申请号：US13414110
申请日：2012-03-07
申请人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
发明人： Ali Tajer , Narayan Prasad , Xiaodong Wang , Sampath Rangarajan
IPC分类号： H04B7/02
CPC分类号： H04B7/0626 , H04B7/022
摘要： Methods and systems for optimizing the utilities of receiver devices in a wireless communication network are disclosed. Precoder design formulations that maximize a minimum worst-case rate or a worst-case sum rate are described for both full base station, cooperation and limited base station cooperation scenarios. In addition, optimal equalizers are also selected to optimize the worst-case sum rate.
摘要翻译：公开了用于优化无线通信网络中的接收机设备的实用性的方法和系统。对于完整的基站，合作和有限的基站合作情况，都会描述最大化最小最坏情况速率或最差情况下的总速率的预编码器设计公式。此外，还选择最佳均衡器来优化最差情况下的和速率。

5. 发明申请

US20090323619A1 DISTRIBUTED BEAMFORMING AND RATE ALLOCATION IN MULTI-ANTENNA COGNITIVE RADIO NETWORKS 审中-公开
标题翻译：多天线无线电网络中的分布式波束分配和速率分配
公开(公告)号：US20090323619A1
公开(公告)日：2009-12-31
申请号：US12493044
申请日：2009-06-26
申请人： Ali Tajer , Narayan Prasad , Xiaodong Wang
发明人： Ali Tajer , Narayan Prasad , Xiaodong Wang
IPC分类号： H04W72/00
CPC分类号： H04W72/08 , H04W16/14 , H04W16/28
摘要： Systems and methods are disclosed for designing beamforming vectors for and allocating transmission rates to secondary users in a wireless cognitive network with secondary (cognitive) users and primary (license-holding) users by performing distributed beamforming design and rate allocation for the secondary users to maximize a minimum weighted secondary rate; and granting simultaneous spectrum access to the primary and secondary users subject to one or more co-existence constraints.
摘要翻译：公开了系统和方法，用于通过对次要用户执行分布式波束成形设计和速率分配来设计用于辅助（认知）用户和主（许可证持有）用户的无线认知网络中的次级用户的波束成形向量并分配传输速率，以使次要用户最大化最低加权次要率; 并允许同时进行频谱接入到受到一个或多个共存限制的主要和次要用户。

6. 发明授权

US08660077B2 Method and systems for conveying scheduling information of overlapping co-scheduled users in an OFDMA-MU-MIMO system 有权
标题翻译：用于在OFDMA-MU-MIMO系统中传送重叠共同调度用户的调度信息的方法和系统
公开(公告)号：US08660077B2
公开(公告)日：2014-02-25
申请号：US13296394
申请日：2011-11-15
申请人： Narayan Prasad , Mohammad Ali Khojastepour , Meilong Jiang , Xiaodong Wang , Sampath Rangarajan
发明人： Narayan Prasad , Mohammad Ali Khojastepour , Meilong Jiang , Xiaodong Wang , Sampath Rangarajan
IPC分类号： H04W4/00 , H04W28/04 , H04W72/04
CPC分类号： H04W72/04 , H04B7/0452 , H04B7/0639 , H04B7/066 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0026 , H04L1/20 , H04L5/0007 , H04L25/0208 , H04W8/26 , H04W28/04 , H04W52/346 , H04W72/0446 , H04W72/12 , H04W72/1231 , H04W72/1289
摘要： Methods and systems for conveying or transmitting to any given user in an OFDMA-MU-MIMO system scheduling information of other co-scheduled users to permit the user to perform error-correction on received data and/or interference reduction on its received signals. The scheduling information can include resource block assignment, modulation constellations employed, coding rates employed, power levels utilized and precoder matrix indices used. Further, the scheduling information can be conveyed in part through dedicated reference symbol layers or pilot streams. Moreover, a base station may transmit a preliminary estimate of the total number of users the base station expects to schedule, or an upper-bound on the total number of users, to the MU-MIMO users to permit the MU-MIMO users to determine preferred precoder matrix indices and indications of channel quality indices.
摘要翻译：在OFDMA-MU-MIMO系统中向任何给定用户传送或发送给其他协调调度用户的信息的方法和系统，以允许用户对接收到的数据执行纠错和/或对其接收信号的干扰减少。调度信息可以包括资源块分配，采用的调制星座，采用的编码率，使用的功率电平和使用的预编码器矩阵索引。此外，可以部分地通过专用参考符号层或导频流来传送调度信息。此外，基站可以向MU-MIMO用户发送基站期望调度的用户总数或总用户数的上限的初步估计，以允许MU-MIMO用户确定优选的预编码器矩阵索引和信道质量指标的指示。

7. 发明授权

US08532051B2 Method and systems for conveying scheduling information of overlapping co-scheduled users in an OFDMA-MU-MIMO system 有权
标题翻译：用于在OFDMA-MU-MIMO系统中传送重叠共同调度用户的调度信息的方法和系统
公开(公告)号：US08532051B2
公开(公告)日：2013-09-10
申请号：US13296387
申请日：2011-11-15
申请人： Narayan Prasad , Mohammad Ali Khojastepour , Meilong Jiang , Xiaodong Wang , Sampath Rangarajan
发明人： Narayan Prasad , Mohammad Ali Khojastepour , Meilong Jiang , Xiaodong Wang , Sampath Rangarajan
IPC分类号： H04L5/22 , H04W72/04 , H04L5/00
CPC分类号： H04W72/04 , H04B7/0452 , H04B7/0639 , H04B7/066 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0026 , H04L1/20 , H04L5/0007 , H04L25/0208 , H04W8/26 , H04W28/04 , H04W52/346 , H04W72/0446 , H04W72/12 , H04W72/1231 , H04W72/1289
摘要： Methods and systems for conveying or transmitting to any given user in an OFDMA-MU-MIMO system scheduling information of other co-scheduled users to permit the user to perform error-correction on received data and/or interference reduction on its received signals. The scheduling information can include resource block assignment, modulation constellations employed, coding rates employed, power levels utilized and precoder matrix indices used. Further, the scheduling information can be conveyed in part through dedicated reference symbol layers or pilot streams. Moreover, a base station may transmit a preliminary estimate of the total number of users the base station expects to schedule, or an upper-bound on the total number of users, to the MU-MIMO users to permit the MU-MIMO users to determine preferred precoder matrix indices and indications of channel quality indices.
摘要翻译：在OFDMA-MU-MIMO系统中向任何给定用户传送或发送给其他协调调度用户的信息的方法和系统，以允许用户对接收到的数据执行纠错和/或对其接收信号的干扰减少。调度信息可以包括资源块分配，采用的调制星座，采用的编码率，使用的功率电平和使用的预编码器矩阵索引。此外，可以部分地通过专用参考符号层或导频流来传送调度信息。此外，基站可以向MU-MIMO用户发送基站期望调度的用户总数或总用户数的上限的初步估计，以允许MU-MIMO用户确定优选的预编码器矩阵索引和信道质量指标的指示。

8. 发明授权

US08255778B2 Hybrid ARQ transmission method with effective channel matrix and decision statistics resetting 有权
标题翻译：具有有效信道矩阵和决策统计复位的混合ARQ传输方法
公开(公告)号：US08255778B2
公开(公告)日：2012-08-28
申请号：US12435249
申请日：2009-05-04
申请人： Narayan Prasad , Xiaodong Wang
发明人： Narayan Prasad , Xiaodong Wang
IPC分类号： H03M13/15 , H03M13/17 , H03M13/45
CPC分类号： H04L1/1845 , H03M13/09 , H03M13/6306 , H03M13/6337
摘要： A method for decoding of multiple wireless signals by a chase combining hybrid-automatic-repeat-request CC-HARQ receiver includes demodulating wireless signals received from respective mobile sources using an effective channel matrix and decision statistics; updating log-likelihood-ratios LLRs and decoding the received codewords using the corresponding updated LLRs; determining set of correctly decoded codewords using a cyclic redundancy check; updating the effective channel matrix and decision statistics responsive to the step of determining; and resetting the effective channel matrix and decision statistics in the event that the number of decoding errors for a codeword exceeds its maximum limit after storing the updated LLRs of all remaining erroneously decoded codewords for which the number of decoding errors is below the respective maximum limit.
摘要翻译：通过追踪组合混合自动重复请求CC-HARQ接收机对多个无线信号进行解码的方法包括使用有效信道矩阵和判定统计解调从相应移动源接收的无线信号; 更新对数似然比LLR并使用相应的更新的LLR对接收的码字进行解码; 使用循环冗余校验来确定正确解码的码字集合; 响应于确定步骤更新有效信道矩阵和决策统计; 并且在存储解码错误数量低于相应最大限制的所有剩余的错误解码的码字的更新的LLR之后，在码字的解码错误的数量超过其最大限制的情况下重置有效信道矩阵和判定统计。

9. 发明授权

US08174959B2 Auction based resource allocation in wireless systems 有权
标题翻译：无线系统中基于拍卖的资源分配
公开(公告)号：US08174959B2
公开(公告)日：2012-05-08
申请号：US12399769
申请日：2009-03-06
申请人： Kai Yang , Narayan Prasad , Xiaodong Wang
发明人： Kai Yang , Narayan Prasad , Xiaodong Wang
IPC分类号： H04J11/00 , H04J3/16
CPC分类号： H04L5/0007 , H04L5/0032 , H04L5/0037 , H04L5/0046 , H04W52/243 , H04W52/262 , H04W52/267 , H04W52/346 , H04W72/1257
摘要： Systems and methods to assign one or more resources in a multi-user cellular Orthogonal Frequency-Division Multiple Access (OFDMA) uplink includes specifying a resource allocation problem for one or more resources; converting the resource allocation problem into an assignment problem; solving the assignment problem through an auction; and allocating one or more resources to cellular users to maximize a system utility.
摘要翻译：在多用户蜂窝正交频分多址（OFDMA）上行链路中分配一个或多个资源的系统和方法包括：为一个或多个资源指定资源分配问题; 将资源分配问题转化为分配问题; 通过拍卖解决作业问题; 并将一个或多个资源分配给蜂窝用户以最大化系统效用。

10. 发明授权

US08014460B2 Method for multiple-input-multiple-output system demodulation 有权
标题翻译：多输入多输出系统解调方法
公开(公告)号：US08014460B2
公开(公告)日：2011-09-06
申请号：US11613407
申请日：2006-12-20
申请人： Narayan Prasad , Xiaodong Wang , Mohammad Madihian
发明人： Narayan Prasad , Xiaodong Wang , Mohammad Madihian
IPC分类号： H04B7/02
CPC分类号： H04L25/03203 , H04L25/0204
摘要： A MMSE-based deterministic sequential Monte Carlo (SMC) method for MIMO demodulation exhibiting square root complexity in terms of constellation size. Further extensions to the method reduce the search space resulting in significant reduction in computational requirements while minimally impacting performance. As a hard decision algorithm, the methods achieve sphere decoder performance while imposing a much smaller computational load.
摘要翻译：基于MMSE的确定性顺序蒙特卡罗（SMC）方法，用于在星座大小方面表现出平方根复杂度的MIMO解调。该方法的进一步扩展减少了搜索空间，导致计算需求的显着降低，同时最小程度上影响了性能。作为硬判决算法，该方法实现了球体解码器的性能，同时施加了更小的计算量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式