公开(公告)号：US06816470B2

公开(公告)日：2004-11-09

申请号：US10171285

申请日：2002-06-13

Applicant: Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

Inventor： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

IPC: H04J300

CPC classification number: H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

Abstract: 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：US06552996B2

公开(公告)日：2003-04-22

申请号：US10040513

申请日：2001-12-28

Applicant: Younglok Kim ,  Jung-Lin Pan

Inventor： Younglok Kim ,  Jung-Lin Pan

IPC: H04J1300

CPC classification number: H04J13/12 ,  H04J13/0044 ,  H04J13/0048 ,  H04J13/20

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08705641B2

公开(公告)日：2014-04-22

申请号：US12984101

申请日：2011-01-04

Applicant: Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

Inventor： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

IPC: H04L27/28 ,  H04B1/707

CPC classification number: H04B1/711 ,  H04L5/026 ,  H04L2025/03414

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08340153B2

公开(公告)日：2012-12-25

申请号：US13236147

申请日：2011-09-19

Applicant: Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

Inventor： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

IPC: H04B1/00

CPC classification number: H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/2601 ,  H04L27/2647

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120269237A1

公开(公告)日：2012-10-25

申请号：US13544771

申请日：2012-07-09

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

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

IPC: H04B1/707

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: 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.

Abstract translation: 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：US08265130B2

公开(公告)日：2012-09-11

申请号：US12512203

申请日：2009-07-30

Applicant: Philip J. Pietraski ,  Mihaela C. Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory S. Sternberg ,  Rui Yang ,  Bin Li

Inventor： Philip J. Pietraski ,  Mihaela C. Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory S. Sternberg ,  Rui Yang ,  Bin Li

IPC: H03H7/40 ,  H03K5/159

CPC classification number: H04L25/03038 ,  H04B1/7097 ,  H04L27/0014 ,  H04L2025/03509 ,  H04L2025/03547 ,  H04L2025/03585 ,  H04L2025/03611 ,  H04L2025/03617 ,  H04L2025/03687 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0065

Abstract: An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.

Abstract translation: 公开了一种包括均衡器滤波器和用于处理从多个接收信号导出的采样数据流的抽头系数发生器的自适应均衡器。 抽头系数发生器包括均衡器抽头更新单元，矢量范数平方估计器，有源抽头掩码发生器，用于最小化均衡器滤波器的动态范围的开关和导频振幅参考单元。 当由开关选择由均衡器滤波器输出的未屏蔽信号以产生馈送到均衡器抽头更新单元的误差信号时，动态屏蔽矢量用于屏蔽均衡器抽头更新单元产生的有效抽头。 当使用由均衡器滤波器输出的屏蔽信号来产生误差信号时，固定屏蔽矢量用于屏蔽均衡器抽头更新单元产生的有源抽头。

公开(公告)号：US08218607B2

公开(公告)日：2012-07-10

申请号：US12549959

申请日：2009-08-28

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

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

IPC: H04B1/707

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: 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.

Abstract translation: 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：US08189648B2

公开(公告)日：2012-05-29

申请号：US12549912

申请日：2009-08-28

Applicant: Jung-Lin Pan ,  Younglok Kim ,  Donald M. Grieco

Inventor： Jung-Lin Pan ,  Younglok Kim ,  Donald M. Grieco

IPC: H04B1/00 ,  H04B1/10 ,  H04L27/06

CPC classification number: H04B1/71055 ,  H04B1/1027 ,  H04B1/7103 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03006

Abstract: Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.

Abstract translation: 从包括多个通信的接收向量估计数据。 接收到的无线信号被转换为基带信号，其被采样以产生接收的矢量。 对接收到的通信估计通道响应。 估计噪声方差。 噪声方差用比例因子缩放。 使用估计的信道响应和缩放的噪声方差来处理样本以产生扩展数据向量。 扩展数据向量被解扩以恢复所接收的无线信号的数据。

公开(公告)号：US08081595B2

公开(公告)日：2011-12-20

申请号：US12173363

申请日：2008-07-15

Applicant: Guodong Zhang ,  Jung-Lin Pan ,  Peter S. Wang ,  Robert A. DiFazio ,  Stephen E. Terry

Inventor： Guodong Zhang ,  Jung-Lin Pan ,  Peter S. Wang ,  Robert A. DiFazio ,  Stephen E. Terry

IPC: H04B7/185 ,  H04Q7/24

CPC classification number: H04W52/346

Abstract: A method and apparatus for scheduling transmissions via an enhanced dedicated channel (E-DCH) are disclosed. A scheduled power is calculated for scheduled data flows. A remaining transmit power is calculated for the E-DCH transmission. A rate request message is generated, wherein the scheduled power, remaining transmit power and rate request message are used to select transport format combinations (TFCs) and multiplex data scheduled for the E-DCH transmission. The remaining transmit power is calculated by subtracting from a maximum allowed power the power of a dedicated physical data channel (DPDCH), a dedicated physical control channel (DPCCH), a high speed dedicated physical control channel (HS-DPCCH), an enhanced uplink dedicated physical control channel (E-DPCCH) and a power margin.

Abstract translation: 公开了一种经由增强专用信道（E-DCH）调度传输的方法和装置。 为计划的数据流计算计划的功率。 计算E-DCH传输的剩余发射功率。 生成速率请求消息，其中调度功率，剩余发射功率和速率请求消息用于选择为E-DCH传输调度的传输格式组合（TFC）和多路复用数据。 通过从最大允许功率中减去专用物理数据信道（DPDCH），专用物理控制信道（DPCCH），高速专用物理控制信道（HS-DPCCH），增强型上行链路 专用物理控制信道（E-DPCCH）和功率余量。

公开(公告)号：US20110280210A1

公开(公告)日：2011-11-17

申请号：US13192890

申请日：2011-07-28

Applicant: Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

Inventor： Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

IPC: H04W72/04

CPC classification number: H04W72/1226 ,  H04L1/188 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/006 ,  H04L5/023 ,  H04L27/2602 ,  H04W8/26 ,  H04W52/08 ,  H04W52/146 ,  H04W52/16 ,  H04W52/248 ,  H04W52/48 ,  H04W52/50 ,  H04W72/02 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/004 ,  H04W74/0833 ,  H04W74/0866

Abstract: A method and apparatus for accessing a contention-based uplink random access channel (RACH) in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A wireless transmit/receive unit (WTRU) randomly selects a RACH subchannel and a signature among a plurality of available RACH subchannels and signatures. The WTRU transmits a preamble using the selected signature via the selected RACH subchannel at a predetermined or computed transmission power. A base station monitors the RACH to detect the preamble and sends an acquisition indicator (AI) to the WTRU when a signature is detected on the RACH. When receiving a positive acknowledgement, the WTRU sends a message part to the base station. If receiving a negative acknowledgement or no response, the WTRU retransmits the preamble.

Abstract translation: 公开了一种在单载波频分多址（SC-FDMA）系统中访问基于竞争的上行随机接入信道（RACH）的方法和装置。 无线发射/接收单元（WTRU）在多个可用的RACH子信道和签名中随机选择RACH子信道和签名。 WTRU以预定或计算的传输功率经由所选择的RACH子信道使用所选择的签名来发送前导码。 当在RACH上检测到签名时，基站监视RACH以检测前导码，并将捕获指示符（AI）发送到WTRU。 当接收到肯定确认时，WTRU向基站发送消息部分。 如果接收到否定的确认或没有响应，则WTRU重传前导码。