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51. 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.

52. 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。

53. 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。

54. 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。

55. 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。

56. 发明申请

US20050025267A1 Reduced complexity sliding window based equalizer 失效
标题翻译：降低复杂性滑动窗口均衡器
公开(公告)号：US20050025267A1
公开(公告)日：2005-02-03
申请号：US10875900
申请日：2004-06-24
申请人： Alexander Reznik , Rui Yang , Bin Li , Ariela Zeira
发明人： Alexander Reznik , Rui Yang , Bin Li , Ariela Zeira
IPC分类号： H04L25/08
CPC分类号： H04L25/0242 , H04B1/71052 , H04L25/0212 , H04L25/03057 , H04L25/03292 , H04L2025/03426 , H04L2025/03509 , H04L2025/03605
摘要： The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.
摘要翻译：本发明具有许多方面。本发明的一个方面是使用滑动窗口方法进行均衡。第二个方面重用为每个窗口导出的信息，供后续窗口使用。第三方面利用基于离散傅立叶变换的均衡方法。第四方面涉及处理接收信号和信道响应的过采样。第五方面涉及处理多个接收天线。第六实施例涉及处理过采样和多个接收天线。

57. 发明授权

US06816470B2 Method and apparatus for interference signal code power and noise variance estimation 有权
标题翻译：用于干扰信号码功率和噪声方差估计的方法和装置
公开(公告)号：US06816470B2
公开(公告)日：2004-11-09
申请号：US10171285
申请日：2002-06-13
申请人： Younglok Kim , Jung-Lin Pan , Ariela Zeira
发明人： Younglok Kim , Jung-Lin Pan , Ariela Zeira
IPC分类号： H04J300
CPC分类号： H04B1/7103 , H04B1/7105 , H04B1/71055 , H04B1/71057 , H04L1/20
摘要： Method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation σ ^ n 2 = T · ∑ i = 1 N sample ⁢ &LeftBracketingBar; h n ⁢ ( i ) &RightBracketingBar; 2 , where T = G · γ ⁢ ( r ) N sample , where Nsample=Lchest−Np1·Kmax, where γ ⁢ ( r ) = [ 1 + ( 1 r - 1 ) · ln ⁢ ( 1 - r ) ] - 1 and where r = N sample L chest . As an alternative, a recursive technique may be employed wherein the noise variance is estimated from the ignored coefficients of the estimated channel output and upgraded recursively as per the following: σ ^ n 2 = 1 KW ⁢ ∑ j = 1 K ⁢ ∑ i = 1 W ⁢ &LeftBracketingBar; h i ( j ) - h ^ i ( j ) &RightBracketingBar; 2 , where ĥi(j) are the channel estimates after the post processing and the noise variance estimates {circumflex over (&sgr;)}n−12, and the initial values of ĥi(j) are all zeros.

58. 发明授权

US06728292B2 Combined closed loop/open loop power control in a time division duplex communication system 失效
标题翻译：在时分双工通信系统中组合闭环/开环功率控制
公开(公告)号：US06728292B2
公开(公告)日：2004-04-27
申请号：US10459035
申请日：2003-06-11
申请人： Ariela Zeira , Faith M. Ozluturk , Sung-Hyuk Shin
发明人： Ariela Zeira , Faith M. Ozluturk , Sung-Hyuk Shin
IPC分类号： H04B169
CPC分类号： H04W52/265 , H04B2201/709709 , H04W52/08 , H04W52/10 , H04W52/24 , H04W52/241 , H04W52/242 , H04W52/248 , H04W52/54 , H04W52/60
摘要： A spread spectrum time division duplex user equipment uses frames having time slots for communication. The user equipment receives power commands and a first communication having a transmission power level in a first time slot. A power level of the first communication is measured as received. A pathloss estimate is determined based on in part the measured received first communication power level and the first communication transmission power level. A transmission power level for the second communication in a second time slot form the user equipment is set based on in part the pathloss estimate weighted by a quality factor adjusted by the power command. The quality factor decreases as a number of time slots between the first and second time slots increases.
摘要翻译：扩频时分双工用户设备使用具有通信时隙的帧。用户设备在第一时隙中接收功率命令和具有发射功率电平的第一通信。第一通信的功率电平被测量为接收。基于部分地测量的接收到的第一通信功率电平和第一通信发送功率电平来确定路径损耗估计。基于由功率命令调整的质量因子加权的路径损耗估计，部分地设置用于在第二时隙中形成用户设备的第二通信的发送功率电平。质量因子随着第一和第二时隙之间的时隙数量的增加而减小。

59. 发明授权

US06622024B2 Outer loop transmit power control using channel-adaptive processing 失效
标题翻译：外环使用信道自适应处理发送功率控制
公开(公告)号：US06622024B2
公开(公告)日：2003-09-16
申请号：US10036118
申请日：2001-12-26
申请人： Chang-Soo Koo , Ariela Zeira , Donald Grieco , Sung-Hyuk Shin
发明人： Chang-Soo Koo , Ariela Zeira , Donald Grieco , Sung-Hyuk Shin
IPC分类号： H04B700
CPC分类号： H04W52/228 , H04W52/08 , H04W52/12 , H04W52/143 , H04W52/146 , H04W52/225 , H04W52/24
摘要： The present invention is a system and method which controls outer loop transmit power for transmission power of an uplink/downlink communication in a spread spectrum time division communication. The system receives a communication from a base station and determines an error rate on the received communication. The system then distinguishes between static and dynamic channels, produces a static adjustment value, and characterizes the dynamic channels to generate a dynamic adjustment value. The target power level is then adjusted by the static and dynamic adjustment values, setting the transmission power level.
摘要翻译：本发明是一种在扩频时分通信中控制上行链路/下行链路通信的发送功率的外环发送功率的系统和方法。系统接收来自基站的通信，并确定接收到的通信的错误率。然后，系统区分静态和动态通道，产生静态调整值，并表征动态通道以产生动态调整值。然后通过静态和动态调整值调整目标功率电平，设置发射功率电平。

60. 发明授权

US06603797B1 Outer loop/weighted open loop power control in a time division duplex communication system 失效
标题翻译：时分双工通信系统中的外环/加权开环功率控制
公开(公告)号：US06603797B1
公开(公告)日：2003-08-05
申请号：US09533423
申请日：2000-03-22
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： H04B169
CPC分类号： H04W52/225 , H04W52/12 , H04W52/24
摘要： Outer loop/weighted open loop power control controls transmission power levels in a spread spectrum time division duplex communication station. A first communication station transmits a communication to a second communication station. The second station receives the communication and measures its received power level. Based on in part the received communication's power level and the communication's transmission 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 second station to the first station is based on in part weighting the path loss estimate in response to the estimate's quality.
摘要翻译：外环/加权开环功率控制控制扩频时分双工通信站中的发射功率电平。第一通信站将通信发送到第二通信站。第二站接收通信并测量其接收到的功率电平。基于接收到的通信的功率电平和通信的发送功率电平，确定路径损耗估计。路径损耗估计的质量也被确定。用于从第二站到第一站的通信的发射功率电平基于对估计的质量的响应部分地对路径损耗估计进行加权。

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