专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US07596171B2 Data detection for codes with non-uniform spreading factors 有权
标题翻译：具有不均匀扩散因子的码的数据检测
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。

22. 发明申请

US20090168739A1 METHOD AND APPARATUS EMPLOYED IN A USER EQUIPMENT FOR INTERFERENCE SIGNAL CODE POWER AND NOISE VARIANCE ESTIMATION 有权
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.

23. 发明授权

US07539238B2 Extended algorithm data estimator 失效
标题翻译：扩展算法数据估计器
公开(公告)号：US07539238B2
公开(公告)日：2009-05-26
申请号：US12173163
申请日：2008-07-15
申请人： Jung-Lin Pan , Yuejin Huang , Ariela Zeira
发明人： Jung-Lin Pan , Yuejin Huang , Ariela Zeira
IPC分类号： H04L27/06 , H04B1/707
CPC分类号： H04B1/71052 , H04L25/03159 , H04L2025/03414 , H04L2025/03522 , H04L2025/03605
摘要： A method of data estimation for a Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system or any other system using an extended algorithm (EA) in preference to a truncated algorithm (TA). The EA avoids implementation errors by choice of proper extended matrices, and accepts the use of one piece of hardware. The EA also obviates loss of multiple signals in the tail part of each data field, and avoids errors due to transformation of a Toeplitz matrix to a circulant matrix.
摘要翻译：一种用于时分双工（TDD）码分多址（CDMA）系统或使用优先于截断算法（TA）的扩展算法（EA）的任何其他系统的数据估计方法。 EA通过选择适当的扩展矩阵来避免实现错误，并接受使用一块硬件。 EA还消除了每个数据字段的尾部中的多个信号的丢失，并且避免了由于Toeplitz矩阵向循环矩阵的转换而导致的错误。

24. 发明申请

US20090074036A1 SEGMENT-WISE CHANNEL EQUALIZATION BASED DATA ESTIMATION 失效
标题翻译：基于分段信道均衡的数据估计
公开(公告)号：US20090074036A1
公开(公告)日：2009-03-19
申请号：US12277918
申请日：2008-11-25
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B1/00
CPC分类号： H04B1/7105 , H04B1/707
摘要： Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications.
摘要翻译：通过无线通信装置估计多个接收的扩频信号的数据。多个接收到的通信在共享频谱中被接收。接收到的通信被采样以产生接收的连续采样矢量。处理所接收的矢量以产生多个段。每个段被单独处理以估计接收到的通信的数据。

25. 发明授权

US07492750B2 Method and apparatus employed in a user equipment for interference signal code power and noise variance estimation 有权
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.

26. 发明授权

US07483475B2 Efficient joint detection 失效
标题翻译：高效联合检测
公开(公告)号：US07483475B2
公开(公告)日：2009-01-27
申请号：US11926534
申请日：2007-10-29
申请人： Jaeyoung Kwak , John W. Haim , Ariela Zeira , Jung-Lin Pan
发明人： Jaeyoung Kwak , John W. Haim , Ariela Zeira , Jung-Lin Pan
IPC分类号： H04B1/00
CPC分类号： H04B1/71052 , H04B2201/70707
摘要： K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the; extended and approximated system and covariance matrices are determined by prime factor algorithm—fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.
摘要翻译： K个数据信号或脉冲串以码分多址通信格式通过共享频谱发送。组合信号在共享频谱上被接收和采样，作为多个接收的矢量版本。组合信号包括K个发送的数据信号。产生多个系统矩阵和使用K个数据信号的代码和估计的脉冲响应的相关协方差矩阵。每个系统矩阵对应于接收到的矢量版本。系统和协方差矩阵被扩展和近似为块循环矩阵。每个的对角矩阵; 扩展和近似系统和协方差矩阵通过素数因子算法 - 快速傅里叶变换（PFA-FFT）来确定，而不分割矩阵。收到的矢量版本被扩展。采用对角矩阵和扩展接收向量版本的乘积。通过PFA-FFT对乘积的结果执行逆块离散傅里叶变换，以产生K个数据信号的估计数据。

27. 发明申请

US20080317103A1 METHOD AND APPARATUS FOR RECEIVING PLURALITY OF DATA SIGNALS 有权
标题翻译：用于接收数据信号的多重性的方法和装置
公开(公告)号：US20080317103A1
公开(公告)日：2008-12-25
申请号：US12185878
申请日：2008-08-05
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： H04B1/707
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A transmitter site transmits a plurality of different data signals at a chip rate over a shared spectrum in a code division multiple access communication system. Each transmitted data signal experiences a similar channel response. A combined signal of the transmitted data signals is received. The combined signal is sampled at a multiple of the chip rate. The channel response for the combined signal is determined. A spread data vector is determined using the combined signal samples and the estimated channel response. The data of the different data signals is determined using the spread data vector.
摘要翻译：发射机站在码分多址通信系统中通过共享频谱以码片速率发送多个不同的数据信号。每个发送的数据信号经历类似的信道响应。接收发送的数据信号的组合信号。组合信号以芯片速率的倍数进行采样。确定组合信号的信道响应。使用组合的信号样本和估计的信道响应来确定扩展数据向量。使用扩展数据向量来确定不同数据信号的数据。

28. 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。

29. 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。

30. 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.

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