公开(公告)号：US20100296438A1

公开(公告)日：2010-11-25

申请号：US12469306

申请日：2009-05-20

申请人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Timothy J. Wilson

发明人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Timothy J. Wilson

IPC分类号： H04W72/00

CPC分类号： H04L27/2662 ,  H04L5/0051 ,  H04L25/0224 ,  H04L27/2675

摘要： A method, a system and a receiver device provide timing and frequency correction in a spatial division multiple access (SDMA) system. A timing and frequency correction (TFC) logic/utility obtains a timing error estimate by using pilot symbols on a slot of six tiles. The TFC logic estimates the timing error based on pilot phase differences between unique pairs of tiles when the frequency separation of the tiles is less than a threshold value. When none of the unique pairs of tiles satisfies the threshold value, the TFC logic estimates timing error based on an exhaustive search for each candidate phase error value. The TFC logic performs timing error correction via a timing error estimate based on pilots from the symbols received on each antenna. The TFC logic performs inexplicit frequency error correction according to phase differences based on relative symbol indices.

摘要翻译： 方法，系统和接收机设备在空分多址（SDMA）系统中提供定时和频率校正。 定时和频率校正（TFC）逻辑/效用通过在六个瓦片的时隙上使用导频符号来获得定时误差估计。 当块的频率分离小于阈值时，TFC逻辑基于独特的瓦片对之间的导频相位差来估计定时误差。 当没有唯一的瓦片对满足阈值时，TFC逻辑基于对每个候选相位误差值的详尽搜索来估计定时误差。 TFC逻辑通过基于在每个天线上接收到的符号的导频的定时误差估计来执行定时误差校正。 TFC逻辑根据相对符号索引的相位差执行奇异性频率误差校正。

公开(公告)号：US08199845B2

公开(公告)日：2012-06-12

申请号：US12469306

申请日：2009-05-20

申请人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Timothy J. Wilson

发明人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Timothy J. Wilson

IPC分类号： H04B7/02 ,  H04B1/10 ,  H04B1/26 ,  H04B1/38 ,  H04L1/02 ,  H04L27/28 ,  H04L27/06 ,  H04K1/10 ,  H04J11/00 ,  H04W4/00 ,  H04N7/173

CPC分类号： H04L27/2662 ,  H04L5/0051 ,  H04L25/0224 ,  H04L27/2675

摘要： A method, a system and a receiver device provide timing and frequency correction in a spatial division multiple access (SDMA) system. A timing and frequency correction (TFC) logic/utility obtains a timing error estimate by using pilot symbols on a slot of six tiles. The TFC logic estimates the timing error based on pilot phase differences between unique pairs of tiles when the frequency separation of the tiles is less than a threshold value. When none of the unique pairs of tiles satisfies the threshold value, the TFC logic estimates timing error based on an exhaustive search for each candidate phase error value. The TFC logic performs timing error correction via a timing error estimate based on pilots from the symbols received on each antenna. The TFC logic performs inexplicit frequency error correction according to phase differences based on relative symbol indices.

摘要翻译： 方法，系统和接收机设备在空分多址（SDMA）系统中提供定时和频率校正。 定时和频率校正（TFC）逻辑/效用通过在六个瓦片的时隙上使用导频符号来获得定时误差估计。 当块的频率分离小于阈值时，TFC逻辑基于独特的瓦片对之间的导频相位差来估计定时误差。 当没有唯一的瓦片对满足阈值时，TFC逻辑基于对每个候选相位误差值的详尽搜索来估计定时误差。 TFC逻辑通过基于在每个天线上接收到的符号的导频的定时误差估计来执行定时误差校正。 TFC逻辑根据相对符号索引的相位差执行奇异性频率误差校正。

公开(公告)号：US20070293176A1

公开(公告)日：2007-12-20

申请号：US11455373

申请日：2006-06-19

申请人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Jian J. Wu

发明人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Jian J. Wu

IPC分类号： H04B17/00

CPC分类号： H04L27/2647 ,  H04B17/318 ,  H04B17/336

摘要： A method for selecting at least one operating parameter of a communication system (100). The method can include determining a receive signal strength indicator (RSSI) for a communication signal (330). An intermediate value (D) for the communication signal can be determined based on, at least in part, a received value (ri) of at least one known datum, a predetermined value (pi) of the known datum and a channel estimate ({tilde over (h)}i). Further, a carrier to interference and noise ratio (CINR) can be estimated based on, at least in part, the RSSI and the intermediate value. The operating parameter can be selected based on, at least in part, the estimated CINR.

摘要翻译： 一种用于选择通信系统（100）的至少一个操作参数的方法。 该方法可以包括确定通信信号（330）的接收信号强度指示符（RSSI）。 可以至少部分地基于至少一个已知基准的接收值（r SUB）来确定用于通信信号的中间值（D），预定值（p < 已知数据的信号估计（h i i i i）。 此外，可以至少部分地基于RSSI和中间值来估计载波与干扰和噪声比（CINR）。 可以至少部分地基于估计的CINR来选择操作参数。

公开(公告)号：US07603092B2

公开(公告)日：2009-10-13

申请号：US11455373

申请日：2006-06-19

申请人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Jian J. Wu

发明人： Xiaoyong Yu ,  Alan P. Rottinghaus ,  Jian J. Wu

IPC分类号： H04B17/00

CPC分类号： H04L27/2647 ,  H04B17/318 ,  H04B17/336

摘要： A method for selecting at least one operating parameter of a communication system (100). The method can include determining a receive signal strength indicator (RSSI) for a communication signal (330). An intermediate value (D) for the communication signal can be determined based on, at least in part, a received value (ri) of at least one known datum, a predetermined value (pi) of the known datum and a channel estimate ({tilde over (h)}i). Further, a carrier to interference and noise ratio (CINR) can be estimated based on, at least in part, the RSSI and the intermediate value. The operating parameter can be selected based on, at least in part, the estimated CINR.

摘要翻译： 一种用于选择通信系统（100）的至少一个操作参数的方法。 该方法可以包括确定通信信号（330）的接收信号强度指示符（RSSI）。 可以至少部分地基于至少一个已知数据的接收值（ri），已知数据的预定值（pi）和信道估计（{ （h）} i）。 此外，可以至少部分地基于RSSI和中间值来估计载波与干扰和噪声比（CINR）。 可以至少部分地基于估计的CINR来选择操作参数。

公开(公告)号：US20090268710A1

公开(公告)日：2009-10-29

申请号：US12107858

申请日：2008-04-23

申请人： Xiaoyong Yu ,  Michael N. Kloos ,  Alan P. Rottinghaus

发明人： Xiaoyong Yu ,  Michael N. Kloos ,  Alan P. Rottinghaus

IPC分类号： H04J3/06 ,  H04J11/00

CPC分类号： H04W56/0005

摘要： An apparatus and method for uplink synchronization without periodic ranging in a communication system includes a first step (700) of detecting embedded pilot signals in data traffic from mobile stations. A next step (702) includes estimating a time error by calculating a pilot signal phase difference across a tone index within the same OFDM symbol. A next step (704) includes estimating a frequency error by calculating a pilot signal phase difference across multiple OFDM symbols within a tone. A next step (706) includes determining if at least one of the estimated time and frequency errors exceed a predetermined threshold. A next step (708) includes sending synchronization information to at least one mobile station for the mobile station to synchronize (710) its transmit signals in response to at least one of the time and frequency error.

摘要翻译： 在通信系统中没有周期性测距的用于上行链路同步的装置和方法包括：检测来自移动站的数据业务中的嵌入式导频信号的第一步骤（700）。 下一步骤（702）包括通过计算同一OFDM符号内的音调索引上的导频信号相位差来估计时间误差。 下一步骤（704）包括通过计算音调内的多个OFDM符号之间的导频信号相位差来估计频率误差。 下一步骤（706）包括确定估计的时间和频率误差中的至少一个是否超过预定阈值。 下一步骤（708）包括向至少一个移动台发送同步信息，以使移动台响应于时间和频率误差中的至少一个来同步（710）其发射信号。

公开(公告)号：US07646704B2

公开(公告)日：2010-01-12

申请号：US11554788

申请日：2006-10-31

申请人： Xiaoyong Yu ,  Thomas J. Kovarik ,  Alan P. Rottinghaus

发明人： Xiaoyong Yu ,  Thomas J. Kovarik ,  Alan P. Rottinghaus

IPC分类号： H04J11/00

CPC分类号： H04L27/2655 ,  H04L25/03159

摘要： A communication device is provided that is capable of operating in an OFDM or communication system and that provides for cancellation of in-band spurs. The communication device identifies a bin of multiple bins associated with an output of an inverse transformer and comprising a spur and estimates one or more spur phase parameters and a spur amplitude in association with the identified bin. In one embodiment of the present invention, the one or more spur phase parameters includes a spur initial phase and a spur change rate. When the communication device receives a signal from another communication device, the communication device transforms the received signal to produce a multiple parallel output signals that are each associated with a bin of the multiple bins and cancels a spur in an output signal associated with the identified bin based on the estimated one or more spur phase parameters and spur amplitude.

摘要翻译： 提供了能够在OFDM或通信系统中操作并且提供消除带内刺激的通信设备。 通信设备识别与逆变换器的输出相关联的多个箱的仓，并且包括杂波，并且与所识别的箱相关联地估计一个或多个支路相位参数和杂波振幅。 在本发明的一个实施例中，一个或多个支线相位参数包括支线初始相位和支线变化率。 当通信设备从另一通信设备接收到信号时，通信设备将接收到的信号进行变换以产生多个并行输出信号，每个并行输出信号与多个箱的箱相关联并且消除与所识别的箱相关联的输出信号中的杂散 基于估计的一个或多个支线相位参数和支线振幅。

公开(公告)号：US20080101212A1

公开(公告)日：2008-05-01

申请号：US11554788

申请日：2006-10-31

申请人： Xiaoyong Yu ,  Thomas J. Kovarik ,  Alan P. Rottinghaus

发明人： Xiaoyong Yu ,  Thomas J. Kovarik ,  Alan P. Rottinghaus

IPC分类号： H04J11/00 ,  H04J1/00

CPC分类号： H04L27/2655 ,  H04L25/03159

摘要： A communication device is provided that is capable of operating in an OFDM or communication system and that provides for cancellation of in-band spurs. The communication device identifies a bin of multiple bins associated with an output of an inverse transformer and comprising a spur and estimates one or more spur phase parameters and a spur amplitude in association with the identified bin. In one embodiment of the present invention, the one or more spur phase parameters includes a spur initial phase and a spur change rate. When the communication device receives a signal from another communication device, the communication device transforms the received signal to produce a multiple parallel output signals that are each associated with a bin of the multiple bins and cancels a spur in an output signal associated with the identified bin based on the estimated one or more spur phase parameters and spur amplitude.

摘要翻译： 提供了能够在OFDM或通信系统中操作并且提供消除带内刺激的通信设备。 通信设备识别与逆变换器的输出相关联的多个箱的仓，并且包括杂波，并且与所识别的箱相关联地估计一个或多个支路相位参数和杂波振幅。 在本发明的一个实施例中，一个或多个支线相位参数包括支线初始相位和支线变化率。 当通信设备从另一通信设备接收到信号时，通信设备将接收到的信号进行变换以产生多个并行输出信号，每个并行输出信号与多个箱的箱相关联并且消除与所识别的箱相关联的输出信号中的杂散 基于估计的一个或多个支线相位参数和支线振幅。

公开(公告)号：US20120027111A1

公开(公告)日：2012-02-02

申请号：US12845820

申请日：2010-07-29

申请人： Frederick W. Vook ,  Alan P. Rottinghaus ,  Chandrasekar Sankaran

发明人： Frederick W. Vook ,  Alan P. Rottinghaus ,  Chandrasekar Sankaran

IPC分类号： H04B7/02

CPC分类号： H04B7/0452 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/10 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L25/0224

摘要： An OFDMA communication system is provided that schedules partial usage of subchannels (PUSC) major groups by assigning a beam matrix of a plurality of beam matrices to each major group of multiple PUSC major groups, receiving an uplink signal from each user equipment of multiple users equipment, which uplink signal provides an indication of a channel response associated with the user equipment, determining, for each user equipment of the multiple users equipment and based on the indication of channel quality received from the user equipment, a beam matrix and major group to which to assign the user equipment, and based on the determination of a beam matrix and major group to which to assign each user equipment of the multiple users equipment, assigning two or more users equipment of the multiple users equipment to a same beam matrix and major group during a same time slot.

摘要翻译： 提供OFDMA通信系统，其通过将多个波束矩阵的波束矩阵分配给多个PUSC主组的每个主要组来调度子信道（PUSC）主要组的部分使用，从多个用户设备的每个用户设备接收上行链路信号 所述上行链路信号提供与所述用户设备相关联的信道响应的指示，针对所述多个用户设备的每个用户设备，并且基于从所述用户设备接收到的信道质量的指示来确定波束矩阵和主组， 分配用户设备，并且基于为多用户设备分配每个用户设备的波束矩阵和主要组的确定，将多个用户设备的两个或多个用户设备分配给相同的波束矩阵和主要组 在同一时间段

公开(公告)号：US08077694B2

公开(公告)日：2011-12-13

申请号：US11563701

申请日：2006-11-28

申请人： William K. Doss ,  Alan P. Rottinghaus

发明人： William K. Doss ,  Alan P. Rottinghaus

IPC分类号： H04B7/212

CPC分类号： H04W72/1226

摘要： A wireless communication system (100), method, and site controller (112) schedule at least one of transmission and reception of wireless data by at least one wireless communication device. A distance is determined between at least one wireless communication device (104) and a base station (108) in a wireless communication cell (402). At least one of a downlink subframe (610) and an uplink subframe (614) of a time division duplexing frame (602) is segmented into a plurality of segments. The at least one wireless communication device (104) is scheduled into at least one of the plurality of segments of the downlink subframe (610) and the uplink subframe (614) based on the distance determined between the at least one wireless communication device (104) and the base station (108).

摘要翻译： 无线通信系统（100），方法和站点控制器（112）通过至少一个无线通信设备调度无线数据的发送和接收中的至少一个。 在无线通信小区（402）中的至少一个无线通信设备（104）和基站（108）之间确定距离。 时分双工帧（602）的下行链路子帧（610）和上行链路子帧（614）中的至少一个被分割成多个段。 基于在至少一个无线通信设备（104）之间确定的距离，至少一个无线通信设备（104）被调度到下行链路子帧（610）和上行链路子帧（614）的多个段中的至少一个中 ）和基站（108）。

公开(公告)号：US6009130A

公开(公告)日：1999-12-28

申请号：US817896

申请日：1997-08-18

申请人： Daniel M. Lurey ,  Alan P. Rottinghaus ,  Sheila M. Rader ,  Yuda Y. Luz ,  Paul F. Smith ,  John M. Smith ,  Danny T. Pinckley ,  Kevin M. Laird ,  Anthony Kobrinetz ,  Robert C. Elder ,  Donald E. Bailey

发明人： Daniel M. Lurey ,  Alan P. Rottinghaus ,  Sheila M. Rader ,  Yuda Y. Luz ,  Paul F. Smith ,  John M. Smith ,  Danny T. Pinckley ,  Kevin M. Laird ,  Anthony Kobrinetz ,  Robert C. Elder ,  Donald E. Bailey

IPC分类号： H04B1/00 ,  H04B1/40 ,  H04B7/08 ,  H04L1/06 ,  H04L1/02 ,  H04B1/10 ,  H04B17/02

CPC分类号： H04B7/0802 ,  H04B1/00 ,  H04L1/06 ,  H04B1/40

摘要： A digital receiver (200) and transmitter (300), wherein the digital receiver includes a plurality of antennas (202) for receiving uplink radio frequency signals; a plurality of analog to digital converters (210) for converting the received radio frequency signals into digital signals; a switched digital down converter (214) for down converting one of the digital signals to a baseband IF signal; and a channel processor (228) for recovering one of a plurality of communication channels contained within the baseband IF signal.

摘要翻译： PCT No.PCT / US95 / 17014 Sec。 371日期：1997年8月18日 102（e）日期1997年8月18日PCT 1995年12月28日PCT PCT。 公开号WO96 / 21305 日期：1996年7月11日数字接收机（200）和发射机（300），其中数字接收机包括用于接收上行射频信号的多个天线（202） 多个模数转换器（210），用于将接收的射频信号转换成数字信号; 用于将数字信号中的一个下变频为基带IF信号的开关数字下变频器（214）; 以及用于恢复基带IF信号中包含的多个通信信道中的一个的信道处理器（228）。