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41. 发明授权

US07110386B2 Single user detection user equipment 有权
公开(公告)号：US07110386B2
公开(公告)日：2006-09-19
申请号：US10080212
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 a shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A first element of a spread data vector is determined using the combined signal samples and the estimated channel response. A factor from the first element determination is used to determine remaining elements of the spread data vector. Data of the data signals is estimated using the determined elements of the spread data vector.

42. 发明授权

US07110384B2 Single user detection base station 有权
公开(公告)号：US07110384B2
公开(公告)日：2006-09-19
申请号：US10080123
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： H04V7/216
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 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.

43. 发明申请

US20060126575A1 Adaptive uplink/downlink timeslot assignment in a hybrid wireless time division multiple access/code division multiple access communication system 有权
标题翻译：混合无线时分多址/码分多址通信系统中的自适应上行链路/下行链路时隙分配
公开(公告)号：US20060126575A1
公开(公告)日：2006-06-15
申请号：US11347340
申请日：2006-02-03
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B7/216 , H04B7/212
CPC分类号： H04W72/0446 , H04B7/2618 , H04L5/0073 , H04L5/14 , H04W52/143 , H04W72/0413 , H04W72/042 , H04W72/082 , H04W72/1268 , H04W72/1273
摘要： A hybrid time division duplex/code division multiple access communication system comprises a radio network controller coupled to a plurality of Node-Bs. The radio network controller comprises a resource allocation device for providing each Node-B with a list of timeslots that the Node-B can use to assign uplink timeslots and downlink timeslots. The list of timeslots does not include all potential timeslots as being assignable for uplink communications and does not include all potential timeslots as being assignable for downlink communications. Each of the plurality of Node-Bs comprises an assignment device for dynamically assigning uplink and downlink communications to users of the Node-B in response to the assignable uplink and downlink timeslots of the list
摘要翻译：混合时分双工/码分多址通信系统包括耦合到多个节点B的无线电网络控制器。无线电网络控制器包括用于向每个节点B提供节点B可以用于分配上行链路时隙和下行链路时隙的时隙的列表的资源分配装置。时隙列表不包括可分配给上行链路通信的所有潜在时隙，并且不包括所有可能的时隙作为下行链路通信可分配。多个节点B中的每一个包括分配装置，用于响应于列表的可分配的上行链路和下行链路时隙来动态地向节点B的用户分配上行链路和下行链路通信

44. 发明授权

US07027489B2 Iterative fast fourier transform error correction 失效
标题翻译：迭代快速傅里叶变换纠错
公开(公告)号：US07027489B2
公开(公告)日：2006-04-11
申请号：US10004370
申请日：2001-11-01
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B1/69
CPC分类号： H04B1/71052 , H04B1/7105 , H04B2201/70707
摘要： Data is to be estimated from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially a same time. A combined signal of the transmitted data signals are received over the shared spectrum and sampled. A channel response for the transmitted data signals is estimated. Data of the data signals is estimated using the samples and the estimated channel response. The data estimation uses a Fourier Transform based data estimating approach. An error in the data estimation introduced from a circulant approximation used in the Fourier Transform based approach is iteratively reduced.
摘要翻译：在码分多址通信系统中，从接收到的多个数据信号中估计数据。数据信号在基本上同时在共享频谱中发送。传输的数据信号的组合信号通过共享频谱接收并采样。估计发送的数据信号的信道响应。使用样本和估计的信道响应来估计数据信号的数据。数据估计使用基于傅里叶变换的数据估计方法。从基于傅里叶变换的方法中使用的循环近似引入的数据估计中的误差被迭代地减少。

45. 发明申请

US20060072518A1 Code power measurement for dynamic channel allocation 审中-公开
标题翻译：动态频道分配的代码功率测量
公开(公告)号：US20060072518A1
公开(公告)日：2006-04-06
申请号：US11284254
申请日：2005-11-21
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B1/707 , H04B7/216
CPC分类号： H04W72/082 , H04B1/7103 , H04B2201/709709 , H04J13/16 , H04W16/14 , H04W24/10 , H04W52/0216 , H04W52/0219 , H04W72/0446 , H04W72/0466 , H04W74/04 , Y02D70/1242 , Y02D70/40
摘要： A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system includes an input, a correlating device, and a power measurement device. The input is configured to receive a signal corresponding to a received radio frequency spectrum potentially used by the desired code. The correlating device correlates the received signal with the desired code. The power measurement device measures a power level of the correlated signal.
摘要翻译：一种代码功率测量装置，用于测量相对于码分多址通信系统中潜在使用的期望码的干扰电平，包括输入，相关装置和功率测量装置。输入被配置为接收对应于期望代码潜在使用的接收到的无线电频谱的信号。相关设备将接收的信号与期望的代码相关联。功率测量装置测量相关信号的功率电平。

46. 发明授权

US06885654B2 Low complexity data detection using fast fourier transform of channel correlation matrix 有权
标题翻译：低复杂度数据检测采用快速傅立叶变换的信道相关矩阵
公开(公告)号：US06885654B2
公开(公告)日：2005-04-26
申请号：US09814346
申请日：2001-03-22
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 combined signal is received over a shared spectrum in a time slot in a time division duplex communication system using code division multiple access. Each data signal experiences a similar channel response. The similar channel response is estimated. A matrix representing a channel of the data signals based on in part the estimated channel response is constructed. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel matrix. The spread data vector is despread to recover data from the received combined signal.
摘要翻译：在使用码分多址的时分双工通信系统的时隙中，通过共享频谱接收组合信号。每个数据信号经历类似的信道响应。估计类似的信道响应。基于部分估计的信道响应，构成表示数据信号的信道的矩阵。部分地基于信道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接收到的组合信号中恢复数据。

47. 发明申请

US20050002356A1 Method and apparatus employed in a user equipment for interference signal code power and noise variance estimation 有权
公开(公告)号：US20050002356A1
公开(公告)日：2005-01-06
申请号：US10901796
申请日：2004-07-29
申请人： Younglok Kim , Jung-Lin Pan , Ariela Zeira
发明人： Younglok Kim , Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B17/00 , H04B7/216 , H04J1/00 , H04J3/00 , H04L1/20 , H04Q7/00
CPC分类号： H04B1/7103 , H04B1/7105 , H04B1/71055 , H04B1/71057 , H04L1/20
摘要： Method and apparatus employed by a UE 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 ⁢  h n ⁡ ( i )  2 , where T = G · γ ⁡ ( r ) N sample , where Nsample=Lchest−Npl·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 ⁢  h i ( j ) - h ^ i ( j )  2 , where ĥi(j) are the channel estimates after the post processing and the noise variance estimates {circumflex over (σ)}n-12, and the initial values of ĥi(j) are all zeros.

48. 发明授权

US06608859B2 Fast joint detection base station 失效
公开(公告)号：US06608859B2
公开(公告)日：2003-08-19
申请号：US10081304
申请日：2002-02-20
申请人： Parthapratim De , Jung-Lin Pan , Ariela Zeira
发明人： Parthapratim De , Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B169
CPC分类号： H04B1/7105
摘要： A code division multiple access base station receives K data signals over a shared spectrum. The base station receives and samples a combined signal having the K transmitted data signals. A combined channel response matrix is produced. A block column of a cross correlation matrix is determined using the combined channel response matrix. Each block entry of the block column is a K by K matrix. Each block entry of the block column is a K by K matrix. A fourier transform of a complex conjugate transpose of the combined channel response matrix multiplied to the combined signal samples is taken. An inverse of a fourier transform of each block entry is multiplied to a result of the fourier transform to produce a fourier transform of the data vector. An inverse fourier transform of the data vector fourier transform is taken to produce data of the K signals.

49. 发明授权

US08036180B2 Random access channel preamble 有权
标题翻译：随机接入信道前导码
公开(公告)号：US08036180B2
公开(公告)日：2011-10-11
申请号：US12430414
申请日：2009-04-27
申请人： Stephen G. Dick , Charles A. Dennean , Eldad M. Zeira , Jung-Lin Pan , Sung-Hyuk Shin , Ariela Zeira
发明人： Stephen G. Dick , Charles A. Dennean , Eldad M. Zeira , Jung-Lin Pan , Sung-Hyuk Shin , Ariela Zeira
IPC分类号： H04B7/216
CPC分类号： H04B7/2628 , H04B1/707 , H04B1/7077 , H04B1/7093 , H04J13/00 , H04J13/10
摘要： One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system.
摘要翻译：选择十六个前缀签名中的一个。基于所选择的前导签名生成代码。产生的代码被相位旋转以产生经处理的前导签名信号。经处理的前导签名信号用于处理CDMA RACH信号，CDMA RACH信号用于接入CDMA系统。

50. 发明授权

US08023399B2 Channel estimation in a wireless communication system 失效
标题翻译：无线通信系统中的信道估计
公开(公告)号：US08023399B2
公开(公告)日：2011-09-20
申请号：US11894282
申请日：2007-08-20
申请人： Jung-Lin Pan , Younglok Kim , Ariela Zeira
发明人： Jung-Lin Pan , Younglok Kim , Ariela Zeira
IPC分类号： H04J11/00 , H04B7/216 , H04B1/69 , H03D1/04
CPC分类号： H04L25/0244 , H04L25/0224
摘要： A plurality of communication bursts are transmitted substantially simultaneously in a time slot of a time division duplex/code division multiple access communication system. The communication system has a maximum number of K midamble shifts. Each burst has an assigned midamble. Each midamble is a shifted version of a basic midamble code having a period of P. A combined signal is received. The combined signal includes a received version of each of the communication burst's midambles. A P by P square circulant matrix is constructed including the K midamble shifts. A channel response is determined for each of the K midamble shifts using a prime factor algorithm (PFA) discrete Fourier transform (DFT) algorithm, the received combined signal and the P by P square circulant matrix. The PFA DFT algorithm has a plurality of stages. Each stage has P inputs.
摘要翻译：在时分双工/码分多址通信系统的时隙中基本上同时发送多个通信脉冲串。通信系统具有最大数量的K个中间码位移。每个突发都有一个指定的中间码。每个中间码是具有周期为P的基本中间码的移位版本。接收组合信号。组合信号包括每个通信突发的中间码的接收版本。构造P平方循环矩阵的P包括K个中间码位移。使用素数因子算法（PFA）离散傅里叶变换（DFT）算法，接收的组合信号和P乘P平方循环矩阵，为每个K中间码位移确定信道响应。 PFA DFT算法具有多个阶段。每个阶段都有P个输入。

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