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1. 发明申请

US20080025444A1 MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS 审中-公开
公开(公告)号：US20080025444A1
公开(公告)日：2008-01-31
申请号：US11869609
申请日：2007-10-09
申请人： J. Walton , John Ketchum , John Smee , Mark Wallace , Steven Howard
发明人： J. Walton , John Ketchum , John Smee , Mark Wallace , Steven Howard
IPC分类号： H04L1/02
CPC分类号： H04B7/043 , H04B1/71072 , H04B7/0408 , H04B7/0413 , H04B7/0421 , H04B7/0617 , H04B7/0619 , H04B7/0697 , H04B17/309 , H04L5/023 , H04W16/28
摘要： An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.

2. 发明申请

US20080025425A1 MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS 审中-公开
标题翻译：用于空间多路访问的多天线传输
公开(公告)号：US20080025425A1
公开(公告)日：2008-01-31
申请号：US11869457
申请日：2007-10-09
申请人： J. Walton , John Ketchum , John Smee , Mark Wallace , Steven Howard
发明人： J. Walton , John Ketchum , John Smee , Mark Wallace , Steven Howard
IPC分类号： H04L27/28
CPC分类号： H04B7/043 , H04B1/71072 , H04B7/0408 , H04B7/0413 , H04B7/0421 , H04B7/0617 , H04B7/0619 , H04B7/0697 , H04B17/309 , H04L5/023 , H04W16/28
摘要： An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.
摘要翻译：获得每个终端的上行链路信道响应矩阵，并对其进行分解，得到终端在上行链路上使用的导向矢量。基于其导向向量及其信道响应矩阵，为每个终端形成“有效”上行链路信道响应向量。基于其有效信道响应向量来评估多组终端，以确定用于上行链路传输的最佳集合（例如具有最高总吞吐量）。每个选择的终端利用其导向向量对其数据符号流执行空间处理，并将其空间处理的数据符号流发送到接入点。多个选择的终端通过其相应的MIMO信道同时将其数据符号流发送到接入点。接入点根据接收机空间处理技术对其接收到的符号流执行接收机空间处理，以恢复由所选终端发送的数据符号流。

3. 发明申请

US20060142041A1 Adaptation of transmit subchannel gains in a system with interference cancellation 有权
标题翻译：在具有干扰消除的系统中适配发送子信道增益
公开(公告)号：US20060142041A1
公开(公告)日：2006-06-29
申请号：US11192787
申请日：2005-07-29
申请人： Stefano Tomasin , Henry Pfister , Jilei Hou , John Smee
发明人： Stefano Tomasin , Henry Pfister , Jilei Hou , John Smee
IPC分类号： H04B7/00
CPC分类号： H04W52/146 , H04B1/7103 , H04B2201/70701
摘要： A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
摘要翻译：一种用于干扰消除（IC）的方法和系统。一方面涉及交通干扰消除。另一方面涉及用于飞行员，间接费用和数据的联合IC。另一方面涉及改进的信道估计。另一方面涉及发射子信道增益的适应。

4. 发明申请

US20060141933A1 Channel estimation for interference cancellation 有权
公开(公告)号：US20060141933A1
公开(公告)日：2006-06-29
申请号：US11192503
申请日：2005-07-29
申请人： John Smee , Henry Pfister , Jilei Hou , Stefano Tomasin
发明人： John Smee , Henry Pfister , Jilei Hou , Stefano Tomasin
IPC分类号： H04B1/00
CPC分类号： H04B1/7107 , H04B1/7105 , H04B1/7115 , H04B2001/71077 , H04B2201/70701 , H04L25/0212
摘要： A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.

5. 发明申请

US20060030352A1 Method and apparatus for controlling transmit power in a wireless communications device 有权
标题翻译：用于控制无线通信设备中的发射功率的方法和装置
公开(公告)号：US20060030352A1
公开(公告)日：2006-02-09
申请号：US10942590
申请日：2004-09-15
申请人： Kiran Kiran , John Smee
发明人： Kiran Kiran , John Smee
IPC分类号： H04B7/00
CPC分类号： H04W52/08 , H04W52/243 , H04W52/26 , H04W52/367
摘要： Systems and techniques for wireless communications are disclosed. The systems and techniques include the generation of a signal, the setting of an average transmit power of the signal transmission as a function of a first threshold relating to out-of-band emissions, the clipping of the signal as a function of a second threshold relating to peak transmit power, and the transmission of the signal over a wireless medium.
摘要翻译：公开了用于无线通信的系统和技术。该系统和技术包括信号的产生，作为与带外发射相关的第一阈值的函数的信号传输的平均发射功率的设置，作为第二阈值的函数的信号的削波涉及峰值发射功率，以及通过无线介质传输信号。

6. 发明申请

US20080107048A1 METHOD AND APPARATUS FOR TRANSMITTING DATA IN A TIME DIVISION DUPLEXED (TDD) COMMUNICATION SYSTEM 有权
标题翻译：用于在时分双工（TDD）通信系统中发送数据的方法和装置
公开(公告)号：US20080107048A1
公开(公告)日：2008-05-08
申请号：US11963016
申请日：2007-12-21
申请人： Ahmad Jalali , John Smee , Mark Wallace
发明人： Ahmad Jalali , John Smee , Mark Wallace
IPC分类号： H04J3/00
CPC分类号： H04L1/0032 , H04B7/0434 , H04B7/0626 , H04L1/0003 , H04L1/0013 , H04L1/0026 , H04L1/0034 , H04L1/06 , H04L5/0023 , H04L25/0204 , H04L25/0224 , H04L25/0226 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03426
摘要： Techniques to process data for transmission in a time division duplexed (TDD) communication system. In one aspect, the frequency response of a forward link is estimated at a base station based on reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function based on the pilots transmitted by the terminal, “calibrates” the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols based on weights derived from the forward transfer function. In another aspect, the terminal estimates the “quality” of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.
摘要翻译：在时分双工（TDD）通信系统中处理用于传输的数据的技术。在一个方面，基于来自终端的反向链路传输（例如，导频）在基站处估计前向链路的频率响应。在前向链路上的数据传输之前，基站基于终端发送的导频来确定反向传递函数，使用校准函数“校准”反向传递函数来导出正向传递函数的估计，以及前提条件基于从前向传递函数导出的权重的调制符号。在另一方面，终端估计前向链路的“质量”，并将该信息提供给基站。然后，基站使用该信息在发送之前对数据进行适当的编码和调制，使得所发送的数据能够以期望的性能水平由终端接收。

7. 发明授权

US07099384B1 Method and apparatus for time-division power assignments in a wireless communication system 有权
标题翻译：无线通信系统中时分功率分配的方法和装置
公开(公告)号：US07099384B1
公开(公告)日：2006-08-29
申请号：US09654177
申请日：2000-09-01
申请人： Ahmad Jalali , John Smee , Parag Agashe
发明人： Ahmad Jalali , John Smee , Parag Agashe
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04W52/343 , H04B7/005 , H04B7/0617 , H04W52/40
摘要： In a CDMA data communication system capable of variable rate data transmission, a time-division power assignment cyclically reduces the carrier power level to at least one sector to reduce interference in neighboring sectors. The base station determines a time-division power assignment for each sector and generates signals according to the power assignment. The mobile unit generates filter coefficients corresponding to each power level. The mobile unit estimates Carrier Signal-to-Interference (C/I) to determine a data rate for each power level. Previous iterations of the equalizer are stored and used to refine future estimates.
摘要翻译：在能够进行可变速率数据传输的CDMA数据通信系统中，时分功率分配循环地将载波功率电平降低到至少一个扇区，以减少相邻扇区的干扰。基站确定每个扇区的时分功率分配，并根据功率分配产生信号。移动单元产生对应于每个功率电平的滤波器系数。移动单元估计载波信号到干扰（C / I）以确定每个功率电平的数据速率。均衡器的先前迭代被存储并用于改进未来的估计。

8. 发明申请

US20060141934A1 Traffic interference cancellation 有权
公开(公告)号：US20060141934A1
公开(公告)日：2006-06-29
申请号：US11192769
申请日：2005-07-29
申请人： Henry Pfister , Jilei Hou , John Smee , Stefano Tomasin
发明人： Henry Pfister , Jilei Hou , John Smee , Stefano Tomasin
IPC分类号： H04B1/00 , H04B17/00
CPC分类号： H04B1/7103
摘要： A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.

9. 发明申请

US20060072533A1 Method and apparatus for assigning users to use interlaces in a wireless cellular communication system 有权
标题翻译：用于在无线蜂窝通信系统中分配用户使用交织的方法和装置
公开(公告)号：US20060072533A1
公开(公告)日：2006-04-06
申请号：US10960312
申请日：2004-10-06
申请人： John Smee , Jilei Hou , Kiran Kiran , Naga Bhushan , Rashid Attar
发明人： John Smee , Jilei Hou , Kiran Kiran , Naga Bhushan , Rashid Attar
IPC分类号： H04B7/216
CPC分类号： H04L1/1887 , H04L1/1812
摘要： Methods and apparatuses to selectively assign interlace preference factors to a plurality of user terminals to use a plurality of interlaces. These methods and apparatuses may improve capacity compared to a system that allows each user terminal to transmit data in every interlace.
摘要翻译：用于选择性地将交错偏好因子分配给多个用户终端以使用多个交织的方法和装置。与允许每个用户终端在每个交织中传输数据的系统相比，这些方法和装置可以提高容量。

10. 发明申请

US20060007895A1 Method and apparatus for canceling pilot interference in a wireless communication system 有权
公开(公告)号：US20060007895A1
公开(公告)日：2006-01-12
申请号：US11173504
申请日：2005-06-30
申请人： Alessandro Coralli , Henry Pfister , Jilei Hou , John Smee , Roberto Padovani , Brian Butler , Jeffrey Levin , Thomas Wilborn , Paul Bender
发明人： Alessandro Coralli , Henry Pfister , Jilei Hou , John Smee , Roberto Padovani , Brian Butler , Jeffrey Levin , Thomas Wilborn , Paul Bender
IPC分类号： H04B7/216
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.

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