公开(公告)号：US08300520B2

公开(公告)日：2012-10-30

申请号：US12368586

申请日：2009-02-10

申请人： Younglok Kim ,  Kyle Jung-Lin Pan ,  Ariela Zeira

发明人： Younglok Kim ,  Kyle Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B15/00

CPC分类号： H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

摘要： A method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples is disclosed. A recursive technique may be employed wherein the noise variance is estimated from ignored coefficients of the estimated channel output and upgraded recursively.

摘要翻译： 公开了一种使用减少数量样本的干扰信号码功率噪声方差估计的方法和装置。 可以采用递归技术，其中噪声方差是从所估计的信道输出的忽略系数估计的并递归地升级的。

公开(公告)号：US20100020856A1

公开(公告)日：2010-01-28

申请号：US12549959

申请日：2009-08-28

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04B1/707

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US07522559B2

公开(公告)日：2009-04-21

申请号：US10396992

申请日：2003-03-25

申请人： John W. Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

发明人： John W. Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

IPC分类号： H04W4/00

CPC分类号： H04B1/70735 ,  H04B1/7105

摘要： A receiver includes a blind code detection device for determining the identity of a plurality of channels over which information is to be transmitted when the identity of all channels is not known by the receiver. The blind code detection device generates a candidate channel list filled with the identity of selected channels out of the plurality of channels. A multi-user detection device, responsive to the blind code detection device, processes those channels in the candidate code list.

摘要翻译： 接收机包括盲码检测装置，用于当接收机不知道所有信道的身份时，确定要发送信息的多个信道的身份。 盲代码检测装置生成填充有多个信道中所选择的信道的标识的候选信道列表。 响应于盲代码检测设备的多用户检测设备处理候选代码列表中的那些信道。

公开(公告)号：US08681744B2

公开(公告)日：2014-03-25

申请号：US12729467

申请日：2010-03-23

申请人： John W Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

发明人： John W Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

IPC分类号： H04B7/216

CPC分类号： H04B1/70735 ,  H04B1/7105

摘要： The present invention is a receiver which includes a blind code detection device for determining the identity of a plurality of channels over which information is to be transmitted when the identity of all channels is not known by the receiver. The blind code detection device generates a candidate channel list filled with the identify of selected channels out of the plurality of channels. A multi-user detection device, responsive to the blind code detection device, processes those channels in the candidate code list.

摘要翻译： 本发明是一种接收机，其包括盲码检测装置，用于当接收机不知道所有信道的身份时，确定要发送信息的多个信道的身份。 盲代码检测装置生成填充有多个信道中所选择的信道的标识的候选信道列表。 响应于盲代码检测设备的多用户检测设备处理候选代码列表中的那些信道。

公开(公告)号：US07596171B2

公开(公告)日：2009-09-29

申请号：US11962779

申请日：2007-12-21

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04B1/707

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US20090168739A1

公开(公告)日：2009-07-02

申请号：US12368586

申请日：2009-02-10

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B7/216

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−Np1·Kmax, and 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.

公开(公告)号：US07492750B2

公开(公告)日：2009-02-17

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： H04J3/00

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.

公开(公告)号：US20070291641A1

公开(公告)日：2007-12-20

申请号：US11894282

申请日：2007-08-20

申请人： Jung Pan ,  Younglok Kim ,  Ariela Zeira

发明人： Jung Pan ,  Younglok Kim ,  Ariela Zeira

IPC分类号： H04J11/00

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.

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.

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。