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81. 发明授权

US06954447B2 Method and apparatus for uplink synchronization in wireless communications 失效
标题翻译：无线通信中上行链路同步的方法和装置
公开(公告)号：US06954447B2
公开(公告)日：2005-10-11
申请号：US10973134
申请日：2004-10-26
申请人： Donald M. Grieco , Aykut Bultan , Charles Dennean , Jung-Lin Pan
发明人： Donald M. Grieco , Aykut Bultan , Charles Dennean , Jung-Lin Pan
IPC分类号： H04B1/707 , H04B7/216 , H04B7/26 , H04L20060101 , H04L7/04 , H04W56/00
CPC分类号： H04W56/0005 , H04B1/70757 , H04B7/2668 , H04B2201/70701
摘要： A method and system for uplink (UL) synchronization of an uplink transmission from a plurality of wireless transmit/receive units (WTRUs) to a Node-B in a code division multiple access (CDMA) system. A Node-B receives a transmission including a UL synchronization (SYNC_UL) sequence from a WTRU. A sampler samples the transmission at a sampling rate which is higher than a chip rate. The samples are down-sampled and the SYNC_UL sequence is detected at a lower rate. A first significant path location of the detected SYNC_UL sequence is determined, and based on the first significant path location, a final significant path location is determined. The final significant path location is quantized and UpPCHPOS is transmitted to the WTRU to adjust a UL transmission timing.
摘要翻译：一种用于在码分多址（CDMA）系统中从多个无线发射/接收单元（WTRU）到节点B的上行链路传输的上行链路（UL）同步的方法和系统。节点B从WTRU接收包括UL同步（SYNC_UL）序列的传输。采样器以高于芯片速率的采样率采样传输。样本被采样，并以较低的速率检测SYNC_UL序列。确定检测到的SYNC_UL序列的第一重要路径位置，并且基于第一有效路径位置确定最终重要路径位置。量化最后的有效路径位置，并且向WTRU传输UpPCH POS POS以调整UL传输定时。

82. 发明授权

US06937644B2 Generalized two-stage data estimation 失效
公开(公告)号：US06937644B2
公开(公告)日：2005-08-30
申请号：US10753631
申请日：2004-01-08
申请人： Jung-Lin Pan , Yuejin Huang , Donald M. Grieco
发明人： Jung-Lin Pan , Yuejin Huang , Donald M. Grieco
IPC分类号： H04B1/707
CPC分类号： H04B1/71052 , H04B1/71055 , H04B2201/70707 , H04L25/0206 , H04L25/0246
摘要： Symbols are to be recovered from signals received in a shared spectrum. Codes of the signals received in the shared spectrum are processed using a block Fourier transform (FT), producing a code block diagonal matrix. A channel response of the received signals is estimated. The channel response is extended and modified to produce a block circulant matrix and a block FT is taken, producing a channel response block diagonal matrix. The code block diagonal matrix is combined with the channel response block diagonal matrix. The received signals are sampled and processed using the combined code block diagonal matrix and the channel response block diagonal matrix with a Cholesky algorithm. A block inverse FT is performed on a result of the Cholesky algorithm to produce spread symbols. The spread symbols are despread to recover symbols of the received signals.

83. 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。

84. 发明授权

US06882849B2 Wireless user equipment for use in reducing cross cell interference 有权
标题翻译：用于减少交叉干扰的无线用户设备
公开(公告)号：US06882849B2
公开(公告)日：2005-04-19
申请号：US10427174
申请日：2003-05-01
申请人： Jung-Lin Pan
发明人： Jung-Lin Pan
IPC分类号： H04B7/26 , H04B17/00 , H04W72/08 , H04Q7/20 , H04B15/00
CPC分类号： H04L5/0073 , H04B7/2618 , H04B2201/709709 , H04L5/0037 , H04W24/10 , H04W28/04 , H04W72/082 , H04W88/08
摘要： A wireless time division duplex/code division multiple access user equipment measures an interference level in time slots. The interference measurements are transmitted. The transmitted interference measurements enable for each of a plurality of nearby user equipments potentially near the user equipment not in a cell of the user equipment to classify timeslots and to determine non-interfering and interfering ones of the nearby user equipments using the timeslots classifying. Communications are transmitted over timeslots assigned by a received timeslot assignment. The received timeslot assignment based on the determined non-interfering and interfering ones of the nearby user equipments. The received timeslot assignment is received. Communications are received over timeslots assigned by the received timeslot assignment.
摘要翻译：无线时分双工/码分多址用户设备测量时隙中的干扰电平。传输干扰测量。传输的干扰测量使得潜在地在用户设备附近的多个附近用户设备中的每一个不在用户设备的小区中对时隙进行分类，并使用时隙分类来确定附近用户设备中的不干扰和干扰的用户设备。通过接收时隙分配分配的时隙发送通信。所接收的时隙分配基于所确定的附近用户设备的不干扰和干扰的。收到接收到的时隙分配。通过接收时隙分配分配的时隙接收通信。

85. 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。

86. 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.

87. 发明授权

US06552996B2 OVSF code system and methods 失效
标题翻译： OVSF代码系统和方法
公开(公告)号：US06552996B2
公开(公告)日：2003-04-22
申请号：US10040513
申请日：2001-12-28
申请人： Younglok Kim , Jung-Lin Pan
发明人： Younglok Kim , Jung-Lin Pan
IPC分类号： H04J1300
CPC分类号： H04J13/12 , H04J13/0044 , H04J13/0048 , H04J13/20
摘要： A code indexing method for orthogonal variable spreading factor (OVSF) codes introduces a single number mapped to the each code. The new code number itself not only provides the code signature, but it is also used for the OVSF code generation. In addition, it provides easy and fast generation of the available code list without the help of look-up table. This capability improves the dynamic code assignment.
摘要翻译：用于正交可变扩展因子（OVSF）码的代码索引方法引入映射到每个代码的单个数字。新的代码本身不仅提供了代码签名，而且还用于生成OVSF代码。此外，它可以轻松快速地生成可用的代码列表，而无需查找表的帮助。此功能可以改进动态代码分配。

88. 发明授权

US08705641B2 Orthogonal frequency division multiplexing-code division multiple access system 有权
标题翻译：正交频分复用码分多址系统
公开(公告)号：US08705641B2
公开(公告)日：2014-04-22
申请号：US12984101
申请日：2011-01-04
申请人： Yingming Tsai , Guodong Zhang , Jung-Lin Pan
发明人： Yingming Tsai , Guodong Zhang , Jung-Lin Pan
IPC分类号： H04L27/28 , H04B1/707
CPC分类号： H04B1/711 , H04L5/026 , H04L2025/03414
摘要： An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data.
摘要翻译：公开了一种正交频分复用（OFDM）码分多址（CDMA）系统。该系统包括发射机和接收机。在发射机处，扩展和副载波映射单元利用复数二次序列码扩展输入数据符号，以产生多个码片，并将每个码片映射到多个副载波中的一个。对映射到子载波的芯片执行逆离散傅立叶变换，并且将循环前缀（CP）插入到OFDM帧中。并行到串行转换器将时域数据转换为串行数据流以进行传输。在接收机处，串并转换器将接收的数据转换成多个接收的数据流，并从接收的数据中移除CP。对接收的数据流执行离散付里叶变换，并进行均衡。去扩展器对均衡器的输出进行解扩以恢复发送的数据。

89. 发明授权

US08340153B2 Hybrid orthogonal frequency division multiple access WTRU and method 有权
标题翻译：混合正交频分多址WTRU和方法
公开(公告)号：US08340153B2
公开(公告)日：2012-12-25
申请号：US13236147
申请日：2011-09-19
申请人： Yingming Tsai , Guodong Zhang , Jung-Lin Pan
发明人： Yingming Tsai , Guodong Zhang , Jung-Lin Pan
IPC分类号： H04B1/00
CPC分类号： H04L5/0007 , H04L5/0016 , H04L5/0037 , H04L5/0044 , H04L5/005 , H04L5/0073 , H04L27/2601 , H04L27/2647
摘要： A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.
摘要翻译：公开了一种混合正交频分多址（OFDMA）无线发射/接收单元（WTRU）和方法。 WTRU包括发射机和接收机。接收机处理接收到的数据以恢复使用OFDMA映射到子载波的数据。接收机通过从多用户扩展数据分离用户数据并从非扩展数据中恢复第二输入数据来恢复第一输入数据。

90. 发明申请

US20120269237A1 DATA DETECTION FOR CODES WITH NON-UNIFORM SPREADING FACTORS 审中-公开
标题翻译：具有非均匀扩展因子的代码的数据检测
公开(公告)号：US20120269237A1
公开(公告)日：2012-10-25
申请号：US13544771
申请日：2012-07-09
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 have 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。

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