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    Multiple access up converter/modulator and method
    3.
    发明授权
    Multiple access up converter/modulator and method 失效
    多路存取转换器/调制器和方法

    公开(公告)号：US5854813A

    公开(公告)日：1998-12-29

    申请号：US912300

    申请日：1997-08-12

    申请人： Alan P. Rottinghaus ,  Daniel M. Lurey ,  Yuda Y. Luz

    发明人： Alan P. Rottinghaus ,  Daniel M. Lurey ,  Yuda Y. Luz

    IPC分类号： H04L27/20

    CPC分类号： H04L27/20

    摘要： A multiple access digital up converter/modulator includes selectors (1606, 1608) having inputs (1602, 1604) and outputs coupled to first and second interpolating filters (1610, 1626). The output of the first interpolating filter is selectively coupled to a first mixer (1612) and a first adder (1622), the first adder also receiving a first phase value and the output is coupled to a first phase accumulator (1616) the output of which is coupled to a first sinusoid generator (1614) and selectively coupled to a second sinusoid generator (1630). The output of each of the first and second mixers are selectively coupled to an output adder (1634) and to inputs of the first and second mixers. The output of the second interpolating filter (1626) is selectively coupled to a second mixer (1628) and a second adder (1638), which also receives a second phase value and the output of which is coupled to a second phase accumulator (1640) the output of which is selectively coupled to the second sinusoid generator. The output of each of the first and second mixers are selectively coupled to an output adder (1634).

    摘要翻译： 多址数字上变换器/调制器包括具有输入（1602,1604）的选择器（1606,1608）和耦合到第一和第二内插滤波器（1610,1626）的输出。 第一内插滤波器的输出选择性地耦合到第一混频器（1612）和第一加法器（1622），第一加法器还接收第一相位值，并且输出端耦合到第一相位累加器（1616） 其耦合到第一正弦波发生器（1614）并且选择性地耦合到第二正弦波发生器（1630）。 第一和第二混频器中的每一个的输出选择性地耦合到输出加法器（1634）和第一和第二混频器的输入端。 第二内插滤波器（1626）的输出选择性地耦合到第二混频器（1628）和第二加法器（1638），第二加法器（1638）还接收第二相位值，其输出耦合到第二相位累加器（1640） 其输出选择性地耦合到第二正弦波发生器。 第一和第二混频器中的每一个的输出选择性地耦合到输出加法器（1634）。

    METHOD AND APPARATUS FOR MAJOR GROUP SCHEDULING IN A FIXED BEAM COMMUNICATION SYSTEM
    5.
    发明申请
    METHOD AND APPARATUS FOR MAJOR GROUP SCHEDULING IN A FIXED BEAM COMMUNICATION SYSTEM 有权
    固定光束通信系统中主要组群调度的方法和装置

    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

    Intelligent scheduling in a time division duplexing system to mitigate near/far interference scenarios
    6.
    发明授权
    Intelligent scheduling in a time division duplexing system to mitigate near/far interference scenarios 有权
    智能调度在时分双工系统中，以减轻近/远的干扰情况

    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）。

    Estimation of CINR and RSSI in a wireless communication system
    7.
    发明申请
    Estimation of CINR and RSSI in a wireless communication system 有权
    无线通信系统中CINR和RSSI的估计

    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。

    UP-LINK SDMA RECEIVER FOR WiMAX
    8.
    发明申请
    UP-LINK SDMA RECEIVER FOR WiMAX 有权
    用于WiMAX的UP-LINK SDMA接收器

    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。

    Estimation of CINR and RSSI in a wireless communication system
    9.
    发明授权
    Estimation of CINR and RSSI in a wireless communication system 有权
    无线通信系统中CINR和RSSI的估计

    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。

    METHOD AND DEVICE FOR INCREASING CAPACITY OF TDD WIRELESS COMMUNICATION SYSTEMS
    10.
    发明申请
    METHOD AND DEVICE FOR INCREASING CAPACITY OF TDD WIRELESS COMMUNICATION SYSTEMS 审中-公开
    用于增加TDD无线通信系统容量的方法和设备

    公开(公告)号：US20080080406A1

    公开(公告)日：2008-04-03

    申请号：US11536813

    申请日：2006-09-29

    申请人： Neil R. Peplinski ,  William K. Doss ,  Thomas J. Kovarik ,  Thomas J. Kundmann ,  Alan P. Rottinghaus

    发明人： Neil R. Peplinski ,  William K. Doss ,  Thomas J. Kovarik ,  Thomas J. Kundmann ,  Alan P. Rottinghaus

    IPC分类号： H04L5/14 ,  H04B7/204 ,  H04Q7/00

    CPC分类号： H04B7/2643

    摘要： An access point (108) in a dual-frequency TDD communication system (100) includes a transceiver (122) that transmits information to a first group of subscriber devices (104a-n) at a first frequency (f1) and contemporaneously receives information from a second group of a subscriber devices (106a-n) at a second frequency (f2) during at least a portion of a period of time (T1). The access point (108) also transmits information to the second group of subscriber devices (106a-n) at the second frequency (f2) and contemporaneously receives information from the first group of subscriber devices (104a-n) at the first frequency (f1) during at least a portion of a second period of time (T3). A method for performing a dual-frequency communication scheme is also provided.

    摘要翻译： 双频TDD通信系统（100）中的接入点（108）包括收发信机（122），其以第一频率（f 1 SUB）向第一组订户设备（104a）发送信息 >）并且在一段时间（T 1）的至少一部分期间同时以第二频率（f 2> 2）从第二组用户设备（106a）接收信息。 接入点（108）还以第二频率（f 2> 2）向第二组用户设备（106a）发送信息，同时从第一组用户设备（104a）接收信息， 在第二时间段（T 3）的至少一部分期间以第一频率（f 1> 1）进行。 还提供了一种用于执行双频通信方案的方法。