专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060281422A1 Method and system for transmit power control in a multiple-input multiple-output wireless communication system 失效
标题翻译：多输入多输出无线通信系统中发射功率控制的方法和系统
公开(公告)号：US20060281422A1
公开(公告)日：2006-12-14
申请号：US11152511
申请日：2005-06-14
申请人： Jung-Lin Pan , Robert Olesen , Yingming Tsai
发明人： Jung-Lin Pan , Robert Olesen , Yingming Tsai
IPC分类号： H04B1/04 , H01Q11/12
CPC分类号： H01Q1/2216 , H01Q21/28 , H04B7/0417 , H04B7/0623 , H04B7/063 , H04W52/248 , H04W52/42
摘要： The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter for controlling the transmit power. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.
摘要翻译：本发明涉及一种用于多输入多输出（MIMO）无线通信系统中的发射功率控制的方法和系统。发射机和接收机都包括用于传输和接收的多个天线。发射机包括功率分配单元，用于基于从接收机接收的反馈来控制发射功率。接收机包括信道估计器和奇异值分解（SVD）单元。信道估计器从从发射机接收的信号中生成信道矩阵，并且SVD单元将信道矩阵分解为D，U和V矩阵。接收机将基于SVD单元的输出产生的反馈发送到发射机以控制发射功率。反馈可以是特征值，发射功率电平或功率控制位或命令之一。可以实现用于基于信道条件选择其中的一个的混合方案。

2. 发明申请

US20060281421A1 Method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output wireless communication system 失效
公开(公告)号：US20060281421A1
公开(公告)日：2006-12-14
申请号：US11152435
申请日：2005-06-14
申请人： Jung-Lin Pan , Robert Olesen , Yingming Tsai
发明人： Jung-Lin Pan , Robert Olesen , Yingming Tsai
IPC分类号： H01Q11/12
CPC分类号： H01Q3/2605
摘要： The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.

3. 发明申请

US20130100995A1 HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD 有权
标题翻译：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。

4. 发明申请

US20120008617A1 HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD 有权
标题翻译：混合正交频分多址接入WTRU和方法
公开(公告)号：US20120008617A1
公开(公告)日：2012-01-12
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： H04W88/02
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。

5. 发明申请

US20110142094A1 ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING-CODE DIVISION MULTIPLE ACCESS SYSTEM 有权
标题翻译：正交频分多路复用代码多路访问系统
公开(公告)号：US20110142094A1
公开(公告)日：2011-06-16
申请号：US12984101
申请日：2011-01-04
申请人： Jung-Lin Pan , Guodong Zhang , Yingming Tsai
发明人： Jung-Lin Pan , Guodong Zhang , Yingming Tsai
IPC分类号： H04B1/69
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。

6. 发明授权

US07876806B2 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：US07876806B2
公开(公告)日：2011-01-25
申请号：US11385168
申请日：2006-03-21
申请人： Jung-Lin Pan , Guodong Zhang , Yingming Tsai
发明人： Jung-Lin Pan , Guodong Zhang , Yingming Tsai
IPC分类号： 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。

7. 发明授权

US07643843B2 Method and system for transmit power control in a multiple-input multiple-output wireless communication system 失效
标题翻译：多输入多输出无线通信系统中发射功率控制的方法和系统
公开(公告)号：US07643843B2
公开(公告)日：2010-01-05
申请号：US11152511
申请日：2005-06-14
申请人： Jung-Lin Pan , Robert Lind Olesen , Yingming Tsai
发明人： Jung-Lin Pan , Robert Lind Olesen , Yingming Tsai
IPC分类号： H04B7/00
CPC分类号： H01Q1/2216 , H01Q21/28 , H04B7/0417 , H04B7/0623 , H04B7/063 , H04W52/248 , H04W52/42
摘要： The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter for controlling the transmit power. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.
摘要翻译：本发明涉及一种用于多输入多输出（MIMO）无线通信系统中的发射功率控制的方法和系统。发射机和接收机都包括用于传输和接收的多个天线。发射机包括功率分配单元，用于基于从接收机接收的反馈来控制发射功率。接收机包括信道估计器和奇异值分解（SVD）单元。信道估计器从从发射机接收的信号中生成信道矩阵，并且SVD单元将信道矩阵分解为D，U和V矩阵。接收机将基于SVD单元的输出产生的反馈发送到发射机以控制发射功率。反馈可以是特征值，发射功率电平或功率控制位或命令之一。可以实现用于基于信道条件选择其中的一个的混合方案。

8. 发明申请

US20060256839A1 Hybrid orthogonal frequency division multiple access system and method 有权
标题翻译：混合正交频分多址系统及方法
公开(公告)号：US20060256839A1
公开(公告)日：2006-11-16
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。

9. 发明申请

US20050272472A1 Wireless communication method and system for forming three-dimensional control channel beams and managing high volume user coverage areas 审中-公开
标题翻译：用于形成三维控制信道波束和管理大容量用户覆盖区域的无线通信方法和系统
公开(公告)号：US20050272472A1
公开(公告)日：2005-12-08
申请号：US11019422
申请日：2004-12-22
申请人： Steven Goldberg , Fatih Ozluturk , Jung-Lin Pan , Yingming Tsai
发明人： Steven Goldberg , Fatih Ozluturk , Jung-Lin Pan , Yingming Tsai
IPC分类号： H04W16/24 , H04W16/28 , H04Q7/20
CPC分类号： H04W16/28 , H04W16/24
摘要： A wireless communication system and method generates and shapes one or more three-dimensional control channel beams for transmitting and receiving signals. Each three-dimensional beam is directed to cover a particular coverage area and beam forming is utilized to adjust bore sight and beam width of the three-dimensional beam in both azimuth and elevation, and the three-dimensional control channel beam is identified. In another embodiment, changes in hot-zones or hot-spots, (i.e., designated high volume user coverage areas), are managed by a network cell base station having at least one antenna. Each of a plurality of wireless transmit/receive units (WTRUs) served by the base station use a formed beam based on one or more beam characteristics. When the coverage area is changed, the base station instructs at least one of the WTRUs to change its beam characteristics such that it forms a return beam concentrated on the antenna of the base station.
摘要翻译：无线通信系统和方法产生并形成用于发送和接收信号的一个或多个三维控制信道波束。每个三维光束被引导以覆盖特定的覆盖区域，并且利用光束成形来调节三维光束在方位角和仰角中的视野和光束宽度，并且识别三维控制信道光束。在另一个实施例中，热区或热点（即，指定的大容量用户覆盖区域）的变化由具有至少一个天线的网络小区基站管理。由基站服务的多个无线发射/接收单元（WTRU）中的每一个基于一个或多个波束特性使用形成的波束。当覆盖区域改变时，基站指示至少一个WTRU改变其波束特性，使得它形成集中在基站的天线上的返回波束。

10. 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。

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