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    Orthogonal frequency division multiplexing-code division multiple access system
    1.
    发明授权
    Orthogonal frequency division multiplexing-code division multiple access system 有权
    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。

    Hybrid orthogonal frequency division multiple access WTRU and method
    2.
    发明授权
    Hybrid orthogonal frequency division multiple access WTRU and method 有权
    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。

    Hybrid orthogonal frequency division multiple access system and method
    4.
    发明授权
    Hybrid orthogonal frequency division multiple access system and method 有权
    混合正交频分多址系统及方法

    公开(公告)号：US07715460B2

    公开(公告)日：2010-05-11

    申请号：US11406878

    申请日：2006-04-19

    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 ,  H04K1/10

    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) system including a transmitter and a receiver is disclosed. The transmitter includes a first spread OFDMA subassembly, a first non-spread OFDMA subassembly and a first common subassembly. The first spread OFDMA subassembly spreads input data and maps the spread data to a first group of subcarriers. The first non-spread OFDMA subassembly maps input data to a second group of subcarriers. The first common subassembly transmits the input data mapped to the first and second group of subcarriers using OFDMA. The receiver includes a second spread OFDMA subassembly, a second non-spread OFDMA subassembly and a second common subassembly. The second common subassembly processes received data to recover data mapped to the subcarriers using OFDMA. The second spread OFDMA subassembly recovers the first input data by separating user data in a code domain and the second non-spread OFDMA subassembly recovers the second input data.

    摘要翻译： 公开了一种包括发射机和接收机的混合正交频分多址（OFDMA）系统。 发射机包括第一扩展OFDMA子组件，第一非扩展OFDMA子组件和第一公共子组件。 第一扩频OFDMA子组件扩展输入数据并将扩展数据映射到第一组子载波。 第一非扩展OFDMA子组件将输入数据映射到第二组副载波。 第一公共子组件使用OFDMA发送映射到第一和第二组子载波的输入数据。 接收机包括第二扩展OFDMA子组件，第二非扩展OFDMA子组件和第二公共子组件。 第二个公共子组件使用OFDMA来处理接收的数据以恢复映射到子载波的数据。 第二扩频OFDMA子组件通过分离码域中的用户数据并且第二非扩展OFDMA子组件恢复第二输入数据来恢复第一输入数据。

    MIMO beamforming-based single carrier frequency division multiple access system
    5.
    发明授权
    MIMO beamforming-based single carrier frequency division multiple access system 失效
    基于MIMO波束成形的单载波频分多址系统

    公开(公告)号：US08553521B2

    公开(公告)日：2013-10-08

    申请号：US12377975

    申请日：2006-09-25

    申请人： Guodong Zhang ,  Jung-Lin Pan ,  Robert Lind Olesen ,  Yingming Tsai

    发明人： Guodong Zhang ,  Jung-Lin Pan ,  Robert Lind Olesen ,  Yingming Tsai

    IPC分类号： H04J11/00

    CPC分类号： H04B7/0417 ,  H04B7/0617 ,  H04B7/086 ,  H04L5/023 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2614 ,  H04L27/2647

    摘要： A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and VH matrices. A channel distortion and interference between transmit and receive antennas are equalized based on the decomposed channel matrices to the extracted frequency domain received data.

    摘要翻译： 公开了一种基于多输入多输出（MIMO）波束成形的单载波频分多址（SC-FDMA）系统。 在发射机上，对传输数据进行快速傅里叶变换（FFT）以产生频域数据。 频域发射数据被映射到分配的子载波。 对映射到所分配的子载波的发送数据执行快速傅里叶逆变换（IFFT），以生成时域发送数据。 时域发送数据通过天线发送。 在接收机处，对接收到的数据执行FFT以产生频域接收的数据。 执行子载波解映射以提取映射在所分配的子载波上的数据。 信道估计器生成分解为U，D和VH矩阵的信道矩阵。 基于分解的信道矩阵到提取的频域接收数据，发送和接收天线之间的信道失真和干扰被均衡。

    WIRELESS COMMUNICATION METHOD AND APPARATUS FOR SELECTING A SERVING CELL AND NODE-B IN AN SC-FDMA SYSTEM
    9.
    发明申请
    WIRELESS COMMUNICATION METHOD AND APPARATUS FOR SELECTING A SERVING CELL AND NODE-B IN AN SC-FDMA SYSTEM 审中-公开
    用于选择SC-FDMA系统中的服务小区和节点B的无线通信方法和装置

    公开(公告)号：US20070047512A1

    公开(公告)日：2007-03-01

    申请号：US11459785

    申请日：2006-07-25

    申请人： Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

    发明人： Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

    IPC分类号： H04J1/00

    CPC分类号： H04W36/30 ,  H04B2201/70702 ,  H04L1/0026 ,  H04L5/023 ,  H04L27/2601 ,  H04W36/08 ,  H04W92/04

    摘要： A method and apparatus for selecting a serving cell/Node-B in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. For intra-Node-B serving cell selection, a serving Node-B measures channel quality indicators (CQIs) of each subcarrier block in an uplink of each cell controlled by the serving Node-B and selects a new serving cell based on the CQIs. The serving Node-B reports the selected new serving cell to a wireless transmit/receive unit (WTRU). For inter-Node-B serving cell selection, each of a plurality of Node-Bs measures a CQI of each of a plurality of subcarrier blocks in an uplink transmission in each cell controlled by each Node-B and forwards the CQIs to a serving cell selection entity. The serving cell selection entity selects a new serving cell/Node-B based on the CQIs. The serving cell selection entity may be a centralized access gateway, a current serving Node-B or a WTRU.

    摘要翻译： 公开了一种在单载波频分多址（SC-FDMA）系统中选择服务小区/节点B的方法和装置。 对于节点间服务小区选择，服务节点B测量由服务节点B控制的每个小区的上行链路中的每个子载波块的信道质量指示符（CQI），并且基于CQI选择新的服务小区。 服务节点B将所选择的新服务小区报告给无线发射/接收单元（WTRU）。 对于节点间服务小区选择，多个节点B中的每一个测量由每个节点B控制的每个小区中的上行链路传输中的多个子载波块中的每一个的CQI，并将CQI转发到服务小区 选择实体。 服务小区选择实体基于CQI选择新的服务小区/节点B。 服务小区选择实体可以是集中接入网关，当前服务节点B或WTRU。

    HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD
    10.
    发明申请
    HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD 有权
    混合正交频分多址接入WTRU和方法

    公开(公告)号：US20130100995A1

    公开(公告)日：2013-04-25

    申请号：US13706811

    申请日：2012-12-06

    申请人： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

    发明人： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

    IPC分类号： H04L27/26

    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。