专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US07209711B2 Dynamic channel quality measurement procedures for optimizing data transmission in a wireless digital communication system 有权
标题翻译：用于优化无线数字通信系统中的数据传输的动态信道质量测量程序
公开(公告)号：US07209711B2
公开(公告)日：2007-04-24
申请号：US10768313
申请日：2004-01-30
申请人： Stephen E. Terry , Stephen G. Dick , James M. Miller , Eldad Zeira , Ariela Zeira
发明人： Stephen E. Terry , Stephen G. Dick , James M. Miller , Eldad Zeira , Ariela Zeira
IPC分类号： H04B17/00
CPC分类号： H04W72/087 , H04B17/24 , H04B17/309 , H04B17/382 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0027 , H04W72/042 , H04W72/085 , H04W72/10 , H04W72/1231 , H04W72/1278
摘要： Data transmission is optimized in a wireless digital communication system including a base station and a plurality of user equipment mobile terminals (UEs). Adaptive modulation and coding (AM&C) is employed to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those UEs with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.
摘要翻译：在包括基站和多个用户设备移动终端（UE）的无线数字通信系统中优化数据传输。采用自适应调制和编码（AM＆C）来实现改进的无线电资源利用，并为用户提供最佳的数据速率。下行链路（DL）数据块由仅从具有未决下行链路传输的那些UE请求下行链路DL信道质量测量的基站接收。 UE通过向基站测量和报告DL信道质量来响应该请求，该基站然后分配资源，使得UE将充分利用无线电资源。基站向UE发送表示调制/编码率的物理信道分配，并且向UE发送下行链路数据块的发送。

92. 发明申请

US20060256841A1 Channel estimation for time division duplex communication systems 失效
公开(公告)号：US20060256841A1
公开(公告)日：2006-11-16
申请号：US11491463
申请日：2006-07-21
申请人： Ariela Zeira
发明人： Ariela Zeira
IPC分类号： H04B1/00
CPC分类号： H04L25/0228 , H04B1/7105 , H04B1/71052 , H04B2201/70701 , H04L25/0204 , H04L25/0206 , H04L25/0212 , H04L25/0226 , H04L25/0242 , H04L25/0246 , H04L25/025 , H04L25/03331
摘要： A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. Each burst has an associated midamble sequence, a receiver knowing the midamble sequences of the K bursts. The receiver receives a vector corresponding to the transmitted midamble sequences of the K communication bursts. A matrix having K right circulant matrix blocks is constructed based in part on the known K midamble sequences. The wireless channel between the transmitter and receiver is estimated based on in part the K block matrix and the received vector.

93. 发明授权

US07136369B2 Multiuser detector for variable spreading factors 有权
公开(公告)号：US07136369B2
公开(公告)日：2006-11-14
申请号：US10100997
申请日：2002-03-19
申请人： Alexander Reznik , Timothy J. Lubecki , Ariela Zeira
发明人： Alexander Reznik , Timothy J. Lubecki , Ariela Zeira
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/7093 , H04B1/71052 , H04B2201/70703 , H04B2201/70705
摘要： A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

94. 发明授权

US07127256B2 Dynamic channel quality measurement procedure implemented by user equipment for adaptive modulation and coding techniques 有权
标题翻译：用户自适应调制编码技术实现的动态信道质量测量程序
公开(公告)号：US07127256B2
公开(公告)日：2006-10-24
申请号：US10768223
申请日：2004-01-30
申请人： Stephen E. Terry , Stephen G. Dick , James M. Miller , Eldad Zeira , Ariela Zeira
发明人： Stephen E. Terry , Stephen G. Dick , James M. Miller , Eldad Zeira , Ariela Zeira
IPC分类号： H04Q7/20
CPC分类号： H04W72/087 , H04B17/24 , H04B17/309 , H04B17/382 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0027 , H04W72/042 , H04W72/085 , H04W72/10 , H04W72/1231 , H04W72/1278
摘要： A wireless digital communication method for a plurality of user equipment mobile terminals (UEs) to communicate with a base station. Adaptive modulation and coding (AM&C) is used to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those mobile terminals (UEs) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.
摘要翻译：一种用于多个用户设备移动终端（UE）与基站进行通信的无线数字通信方法。自适应调制和编码（AM＆C）用于实现改进的无线电资源利用并为用户服务提供最佳数据速率。下行链路（DL）数据块由仅从具有未决下行链路传输的那些移动终端（UE）请求下行链路DL信道质量测量的基站接收。 UE通过向基站测量和报告DL信道质量来响应该请求，该基站然后分配资源，使得UE将充分利用无线电资源。基站向UE发送表示调制/编码率的物理信道分配，并且向UE发送下行链路数据块的发送。

95. 发明授权

US07126978B2 Single user detection base station 有权
公开(公告)号：US07126978B2
公开(公告)日：2006-10-24
申请号：US10080185
申请日：2002-02-21
申请人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
发明人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A code division multiple access base station is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated at the multiple of the chip rate. The multiple chip rate estimated channel response is combined as an effective chip rate channel response. A spread data vector is determined using the effective samples, the effective channel response and a fourier transform. Data of the data signals is estimated using the spread data vector.

96. 发明授权

US07126961B2 Single user detection base station 有权
公开(公告)号：US07126961B2
公开(公告)日：2006-10-24
申请号：US10080073
申请日：2002-02-21
申请人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
发明人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A code division multiple access base station is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A cross correlation matrix is determined using the estimated channel response. A subblock of the cross correlation matrix is selected. A Cholesky factor for the subblock is determined. The Cholesky factor is extended. The spread data vector is determined using the extended Cholesky factor, a version of the channel response and the samples. Data of the data signals is estimated using the spread data vector.

97. 发明授权

US07126933B2 Single user detection user equipment 有权
公开(公告)号：US07126933B2
公开(公告)日：2006-10-24
申请号：US10079737
申请日：2002-02-21
申请人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
发明人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A code division multiple access user equipment is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated as a channel response matrix at the multiple of the chip rate. A padded version of a spread data vector of a size corresponding to the multiple chip rate using a column of the channel response matrix, the estimated channel response matrix, the samples and a fourier transform. The spread data vector is estimated by eliminating elements of the padded version so that the estimated spread data vector is of a size corresponding to the chip rate.

98. 发明授权

US07120189B2 Weighted open loop power control 有权
标题翻译：加权开环功率控制
公开(公告)号：US07120189B2
公开(公告)日：2006-10-10
申请号：US11130591
申请日：2005-05-16
申请人： Ariela Zeira , Sung-Hyuk Shin
发明人： Ariela Zeira , Sung-Hyuk Shin
IPC分类号： H04B1/69
CPC分类号： H04W52/10 , H04B2201/709709 , H04W52/24 , H04W52/242 , H04W52/246 , H04W52/248
摘要： A base station transmits a reference signal. The base station receives a communication. The received communication has a transmission power level set by measuring an interference level; determining the pathloss estimate using the reference signal; determining a long term average of pathloss estimates; multiplying a first weighting factor, α, by the determined pathloss estimate, producing a weighted pathloss estimate; multiplying (1−α) to the determined long term average of pathloss estimates, producing a weighted long term pathloss estimate; and determining the transmission power level by adding the weighted pathloss estimate to the weighted long term pathloss estimate to the measured interference level to a target signal to interference ratio to a constant value.
摘要翻译：基站发送参考信号。基站接收通信。所接收的通信具有通过测量干扰电平而设置的发送功率电平; 使用参考信号确定路径损耗估计; 确定路径损失估计的长期平均值; 将第一加权因子α乘以所确定的路径损耗估计，产生加权路径损耗估计; 将（1-α）乘以确定的路径损耗估计的长期平均值，产生加权的长期路径损耗估计; 以及通过将加权的路径损耗估计加权到所测量的干扰水平，将加权的路径损耗估计与目标信号干扰比相加到常数值来确定发射功率电平。

99. 发明授权

US07106719B2 Single user detection user equipment 有权
公开(公告)号：US07106719B2
公开(公告)日：2006-09-12
申请号：US10080125
申请日：2002-02-21
申请人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
发明人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A code division multiple access user equipment is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A column of a channel correlation matrix is determined using the estimated channel response. A spread data vector is determined using the determined column, the estimated channel response, the received combined signal and a fourier transform. Data of the data signals is estimated using the spread data vector.

100. 发明申请

US20060182070A1 Data detection method and receiver 有权
标题翻译：数据检测方法和接收机
公开(公告)号：US20060182070A1
公开(公告)日：2006-08-17
申请号：US11370113
申请日：2006-03-07
申请人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
发明人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
IPC分类号： H04B7/216
CPC分类号： H04B1/71052 , H04B1/71055
摘要： A method of recovering data for use in a receiver that simultaneously receives a plurality of code division multiple access data signals, each data signal experiencing a similar channel response. A combined signal over the shared spectrum in a time slot is received and sampled. The combined signal comprises the plurality of data signals. The sampled signal is used to estimate the similar channel response, and a channel response matrix is constructed. A channel correlation matrix is constructed based in part on the estimated channel response matrix. A fast Fourier transform (FFT) decomposition of a circulant matrix approximation of the channel correlation matrix, and the sampled data signals, are used to determine a spread data vector. The spread data vector is despread to recover data from the matrix.
摘要翻译：一种恢复用于同时接收多个码分多址数据信号的接收机中的数据的方法，每个数据信号经历类似的信道响应。在时隙中的共享频谱上的组合信号被接收和采样。组合信号包括多个数据信号。采样信号用于估计类似的信道响应，并构建信道响应矩阵。部分基于估计的信道响应矩阵构建信道相关矩阵。使用信道相关矩阵和采样数据信号的循环矩阵近似的快速傅立叶变换（FFT）分解来确定扩展数据向量。扩展数据向量被解扩以从矩阵中恢复数据。

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