专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US07289550B2 Weighted open loop power control system 失效
标题翻译：加权开环功率控制系统
公开(公告)号：US07289550B2
公开(公告)日：2007-10-30
申请号：US11544275
申请日：2006-10-06
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 weighted open loop power control system for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication comprises a receiver and a transmitter. The receiver includes a reference channel data generator, a spreading and training sequence insertion device, an amplifier, a summer, a modulator, and an antenna. The transmitter includes a demodulator configured to receive a transmitted signal from the receiver, a channel estimation device, a data estimation device, and a weighted open loop power controller. The weighted open loop power controller includes a power measurement device, a pathloss estimation device configured to receive an interpreted power level from the data estimation device and estimate the pathloss and update a long term average of the pathloss, a quality measurement device, and a transmit power calculation device for determining the transmitter's power level and to control the receiver's amplifier.
摘要翻译：一种用于使用具有用于通信的时隙的帧的扩频时分双工（TDD）技术来控制发射功率电平的加权开环功率控制系统包括接收机和发射机。接收机包括参考信道数据发生器，扩展和训练序列插入装置，放大器，加法器，调制器和天线。发射机包括解调器，被配置为从接收机接收发射信号，信道估计装置，数据估计装置和加权开环功率控制器。所述加权开环功率控制器包括功率测量装置，路径损耗估计装置，被配置为从所述数据估计装置接收解释的功率电平，并且估计所述路径损耗并更新所述路径损耗的长期平均值，质量测量装置和发送功率计算装置，用于确定发射机的功率电平并控制接收机的放大器。

52. 发明申请

US20070117519A1 Dynamic channel quality measurement procedure implemented in a wireless digital communication system to prioritize the forwarding of downlink data 有权
公开(公告)号：US20070117519A1
公开(公告)日：2007-05-24
申请号：US11656647
申请日：2007-01-23
申请人： Stephen Terry , Stephen Dick , James Miller , Eldad Zeira , Ariela Zeira
发明人： Stephen Terry , Stephen Dick , James Miller , Eldad Zeira , Ariela Zeira
IPC分类号： H04B7/00 , H04B1/00
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： A wireless digital communication system includes a base station in communication with a plurality of user equipment mobile terminals (UEs). The system prioritizes the forwarding of blocks of downlink data to designated ones of the UEs. The system employs adaptive modulation and coding (AM&C) to achieve improved radio resource utilization and provides 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.

53. 发明授权

US07120188B2 User equipment employing a time division duplex technique 失效
公开(公告)号：US07120188B2
公开(公告)日：2006-10-10
申请号：US10435796
申请日：2003-05-12
申请人： Ariela Zeira , Sung-Hyuk Shin , Stephen G. Dick
发明人： Ariela Zeira , Sung-Hyuk Shin , Stephen G. Dick
IPC分类号： H04B1/69
CPC分类号： H04W52/225 , H04W52/12 , H04W52/24
摘要： Outer loop/weighted open loop power control apparatus controls transmission power levels in a spread spectrum time division duplex communication user equipment (UE). The user equipment receives a communication including an transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the user equipment is based on in part weighting the path loss estimate in response to the estimate's quality.

54. 发明授权

US07069190B2 Estimator for determining signal-to-interference ratio with reduced bias effect 失效
标题翻译：用减少偏置效应确定信号干扰比的估计器
公开(公告)号：US07069190B2
公开(公告)日：2006-06-27
申请号：US11116090
申请日：2005-04-27
申请人： Sung-Hyuk Shin , Ariela Zeira
发明人： Sung-Hyuk Shin , Ariela Zeira
IPC分类号： H04B17/00
CPC分类号： H04B1/1027 , H04B17/336
摘要： A signal-to-interference ratio (SIR) estimator for estimating a SIR of baseband signals which are received and processed by a data demodulator to provide demodulated signals to the SIR estimator. The SIR estimator receives the demodulated symbols from the data demodulator and estimates the average signal power of the demodulated symbols as a function of a median based average power value md and a mean based average power value me of the demodulated symbols for each quadrant of a quadrature phase shift keying (QPSK) constellation. The function is used to determine a minimum value m between md and me. The SIR estimator estimates the average effective interference power of the demodulated symbols and calculates the SIR by dividing the estimated average signal power of the demodulated symbols by the estimated average effective interference power of the demodulated symbols. The SIR estimator reduces bias effects on SIR estimation.
摘要翻译：用于估计由数据解调器接收和处理的基带信号的SIR以向SIR估计器提供解调信号的信号干扰比（SIR）估计器。 SIR估计器从数据解调器接收解调符号，并将解调符号的平均信号功率估计为基于中值的平均功率值m N d和基于平均值的平均功率值m _{正交相移键控（QPSK）星座的每个象限的解调符号的大小。该函数用于确定m d> and and e a。。。。。。。。。。。。。。。。。。。。。。。。。 SIR估计器估计解调符号的平均有效干扰功率，并且通过将解调符号的估计平均信号功率除以所解调的符号的估计的平均有效干扰功率来计算SIR。 SIR估计器减少对SIR估计的偏差影响。}

55. 发明申请

US20060056376A1 Physical channel configuration signaling procedures 有权
公开(公告)号：US20060056376A1
公开(公告)日：2006-03-16
申请号：US11270275
申请日：2005-11-09
申请人： Stephen Terry , Stephen Dick , James Miller , Eldad Zeira , Ariela Zeira
发明人： Stephen Terry , Stephen Dick , James Miller , Eldad Zeira , Ariela Zeira
IPC分类号： H04B7/216
CPC分类号： H04W72/0446 , H04B7/0686 , H04B7/2618 , H04J13/16 , H04W72/042 , H04W72/0466
摘要： A sequence of codes are provided for potential assignment to a user in a wireless hybrid time division multiple access (TDMA)/code division multiple access (CDMA) communication system. At least one timeslot is selected to support the communication. For each selected timeslot, at least one code is selected. If more than one code is selected, the selected codes are consecutive in the provided codes sequence. For at least one of the selected timeslots, an identifier of a first and last code of the selected consecutive codes is signaled. The user receives the signaled identifier and uses the selected consecutive codes, as identified, to support the communication.

56. 发明授权

US07003019B2 Data detection for codes with non-uniform spreading factors 失效
公开(公告)号：US07003019B2
公开(公告)日：2006-02-21
申请号：US10154108
申请日：2002-05-22
申请人： Ariela Zeira
发明人： Ariela Zeira
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04J13/0044 , H04B1/707 , H04B1/7105 , H04B2201/70703
摘要： One aspect of the invention simultaneously estimates data transmitted in a spread spectrum communication system using different spreading factors. A plurality of communication signals are received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The transmitted data is estimated as estimated symbols using codes of a uniform spreading factor. For data transmitted with a spreading factor other than the uniform spreading factor, the estimated symbols of that data is converted to symbols of the code of that data. Another aspect of the invention receives a spread spectrum communication signal having data spread using a plurality of spreading factors. The data of the communication is estimated as estimated symbols using codes of a uniform spreading factor. The estimated symbols are parsed into parcels, where the estimated symbols correspond to data transmitted with a same spreading factor. For parcels not of the uniform spreading factor, the estimated symbols are converted into symbols of the same spreading factor of that parcel.

57. 发明申请

US20050220176A1 Weighted open loop power control 有权
标题翻译：加权开环功率控制
公开(公告)号：US20050220176A1
公开(公告)日：2005-10-06
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： H04B1/707 , H04B7/005
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。

58. 发明申请

US20050180495A1 Single user detection circuit 有权
标题翻译：单用户检测电路
公开(公告)号：US20050180495A1
公开(公告)日：2005-08-18
申请号：US11100901
申请日：2005-04-07
申请人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
发明人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
IPC分类号： H04B1/707 , H04B1/7097 , H04B7/204 , H04L5/22 , H04Q7/38
CPC分类号： H04B1/71052 , H04B1/71055
摘要： A circuit for use in a receiver receives a plurality of code division multiple access data signals simultaneously. Each data signal experiences a similar channel response. The circuit receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based in part on the estimated channel response. A spread data vector is determined based in part on a fast Fourier transform (FFT) decomposition of a circulant version of the channel response matrix or channel correlation matrix. The spread data vector is despread to recover data from the matrix.
摘要翻译：用于接收机的电路同时接收多个码分多址数据信号。每个数据信号经历类似的信道响应。电路在时隙中通过共享频谱接收组合信号。组合信号包括多个数据信号。组合信号以组合信号的码片速率的倍数进行采样。估计类似的信道响应。部分基于估计的信道响应构建信道响应矩阵或信道相关矩阵。部分地基于信道响应矩阵或信道相关矩阵的循环版本的快速傅里叶变换（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。

59. 发明申请

US20050169198A1 Base station midamble selection 审中-公开
标题翻译：基站midamble选择
公开(公告)号：US20050169198A1
公开(公告)日：2005-08-04
申请号：US11098733
申请日：2005-04-04
申请人： Ariela Zeira , Eldad Zeira , Alexander Reznik , Stephen Terry
发明人： Ariela Zeira , Eldad Zeira , Alexander Reznik , Stephen Terry
IPC分类号： H04B1/707 , H04B1/7073 , H04B1/7093 , H04B1/7103 , H04B1/7105 , H04B7/00 , H04J3/00 , H04J11/00 , H04J13/00 , H04J13/16 , H04Q7/38 , H04B1/69
CPC分类号： H04B1/7103 , H04B1/707 , H04B1/70735 , H04B1/7105 , H04B2001/70935 , H04B2201/70701 , H04B2201/70709 , H04J13/00 , H04J13/16
摘要： Midamble codes are selected in a wireless time division duplex communication system. At least one channelization code is assigned to a user equipment. A mapping is provided between midamble codes and channelization codes. At least one midamble code is mapped to a plurality of channelization codes having a same spreading factor. The midamble code mapped to the at least one channelization code to the user equipment is selected. A communication burst is formed with the assigned at least one channelization code and the selected midamble code.
摘要翻译：在无线时分双工通信系统中选择Midamble码。至少一个信道化码被分配给用户设备。在中间码和信道化码之间提供映射。至少一个中间码代码被映射到具有相同扩频因子的多个信道化码。选择映射到用户设备的至少一个信道化码的中间码。形成具有分配的至少一个信道化码和所选择的中置码的通信突发。

60. 发明授权

US06879578B2 Single user detection user equipment 有权
标题翻译：单用户检测用户设备
公开(公告)号：US06879578B2
公开(公告)日：2005-04-12
申请号：US10077509
申请日：2002-02-15
申请人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
发明人： Jung-Lin Pan , Parthapratim De , Ariela Zeira
IPC分类号： H04B1/707 , H04B1/7097 , H04B7/204 , H04L5/22 , H04Q7/38 , H04B7/216
CPC分类号： H04B1/71052 , H04B1/71055
摘要： A time division duplex using code division multiple access user equipment receives a plurality of data signals in a time slot. Each data signal experiences a similar channel response. The user equipment receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based on in part the estimated channel response. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel response or channel correlation matrix. The spread data vector is despread to recover data from the matrix.
摘要翻译：使用码分多址用户设备的时分双工在时隙中接收多个数据信号。每个数据信号经历类似的信道响应。用户设备在时隙中通过共享频谱接收组合信号。组合信号包括多个数据信号。组合信号以组合信号的码片速率的倍数进行采样。估计类似的信道响应。基于估计的信道响应部分构建信道响应矩阵或信道相关矩阵。基于信道响应或信道相关矩阵的循环版本的部分快速傅立叶变换（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