公开(公告)号：US06662024B2

公开(公告)日：2003-12-09

申请号：US09859345

申请日：2001-05-16

申请人： Jay R. Walton ,  Mark Wallace ,  Steven J. Howard

发明人： Jay R. Walton ,  Mark Wallace ,  Steven J. Howard

IPC分类号： H04B138

CPC分类号： H04W16/00 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/061 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/06 ,  H04L25/0204 ,  H04L2025/03426 ,  H04W16/28 ,  H04W84/14

摘要： Techniques to schedule downlink data transmission to a number of terminals in a wireless communication system. In one method, one or more sets of terminals are formed for possible data transmission, with each set including a unique combination of one more terminals and corresponding to a hypothesis to be evaluated. One or more sub-hypotheses may further be formed for each hypothesis, with each sub-hypothesis corresponding to specific assignments of a number of transmit antennas to the one or more terminals in the hypothesis. The performance of each sub-hypothesis is then evaluated, and one of the evaluated sub-hypotheses is selected based on their performance. The terminal(s) in the selected sub-hypothesis are then scheduled for data transmission, and data is thereafter coded, modulated, and transmitted to each scheduled terminal from one or more transmit antennas assigned to the terminal.

公开(公告)号：US06473467B1

公开(公告)日：2002-10-29

申请号：US09539224

申请日：2000-03-30

申请人： Mark Wallace ,  Jay R. Walton ,  Ahmad Jalali

发明人： Mark Wallace ,  Jay R. Walton ,  Ahmad Jalali

IPC分类号： H04B702

CPC分类号： H04B7/0417 ,  H04B7/043 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0673 ,  H04B7/08 ,  H04B7/12 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0029 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0041 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/0248 ,  H04L25/03343 ,  H04L27/2613 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W52/08 ,  H04W52/42

摘要： Channel state information (CSI) can be used by a communications system to precondition transmissions between transmitter units and receiver units. In one aspect of the invention, disjoint sub-channel sets are assigned to transmit antennas located at a transmitter unit. Pilot symbols are generated and transmitted on a subset of the disjoint sub-channels. Upon receipt of the transmitted pilot symbols, the receiver units determine the CSI for the disjoint sub-channels that carried pilot symbols. These CSI values are reported to the transmitter unit, which will use these CSI values to generate CSI estimates for the disjoint sub-channels that did not carry pilot symbols. The amount of information necessary to report CSI on the reverse link can be further minimized through compression techniques and resource allocation techniques.

摘要翻译： 信道状态信息（CSI）可以被通信系统用于预处理发射机单元和接收机单元之间的传输。 在本发明的一个方面，将不相交的子信道集分配给位于发射机单元的发射天线。 导频符号在不相交的子信道的子集上生成和发送。 在接收到所发送的导频符号之后，接收机单元确定携带导频符号的不相交子信道的CSI。 这些CSI值被报告给发射机单元，其将使用这些CSI值来生成不携带导频符号的不相交子信道的CSI估计。 可以通过压缩技术和资源分配技术进一步最小化反向链路上报告CSI所需的信息量。

公开(公告)号：USD379589S

公开(公告)日：1997-06-03

申请号：US45286

申请日：1995-10-16

申请人： Kenneth H. Rhodes ,  Ana de Cardenas-Raptis ,  Mark Wallace

设计人： Kenneth H. Rhodes ,  Ana de Cardenas-Raptis ,  Mark Wallace

公开(公告)号：US08948705B2

公开(公告)日：2015-02-03

申请号：US13227946

申请日：2011-09-08

申请人： Jay R. Walton ,  John W. Ketchum ,  Steven J. Howard ,  Mark Wallace

发明人： Jay R. Walton ,  John W. Ketchum ,  Steven J. Howard ,  Mark Wallace

IPC分类号： H04B1/00 ,  H04B7/00 ,  H04W52/12 ,  H04B1/692 ,  H04L5/00 ,  H04L5/02 ,  H04L27/00 ,  H04L27/26 ,  H04W52/28 ,  H04L25/02

CPC分类号： H04W52/12 ,  H04B1/692 ,  H04L5/0021 ,  H04L5/0048 ,  H04L5/026 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/2655 ,  H04W52/286

摘要： In one aspect of a multiple-access OFDM-CDMA system, data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e.g., spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of the downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on.

摘要翻译： 在多址OFDM-CDMA系统的一个方面，通过用从一组可用的扩展码中选择的相应的扩展码扩展每个数据流，在频域中执行数据扩展。 为了支持多次访问，可以向用户分配和分配系统资源（例如，可以根据需要将扩展​​码分配给用户，并且发送功率可以被分配给用户）。 可以通过扩展调整和发射功率缩放的组合来支持每个用户的可变速率数据。 还提供干扰控制技术以通过下行链路和/或上行链路传输的功率控制来提高系统性能，以实现期望的性能水平同时最小化干扰。 每个发射机单元可以发送导频，以帮助接收机单元执行采集，定时同步，载波恢复，切换，信道估计，相干数据解调等。

公开(公告)号：US20120279910A1

公开(公告)日：2012-11-08

申请号：US13393411

申请日：2010-06-15

申请人： Mark Wallace ,  Ben Higgit ,  Keith James Heyes

发明人： Mark Wallace ,  Ben Higgit ,  Keith James Heyes

IPC分类号： B01D61/26 ,  F16K21/04

CPC分类号： A61M1/1656 ,  A61M1/1668 ,  A61M1/3621 ,  A61M2205/12 ,  Y10T137/0318 ,  Y10T137/7837

摘要： A cartridge for use in a hemodialysis machine, the cartridge comprising a dialysate flow path including a dialyser, the dialysate flow path for delivering a flow of dialysate to the dialyser; a first mixing pump comprising a chamber having a fixed volume between a concave recess and a flexible membrane, said chamber for receiving a predetermined volume of a first dialysate solution base, and a volume of water; a flow balancing pump comprising: a chamber having a fixed volume between a concave recess and a flexible membrane, and inlet through which it receives dialysate; a fluid flow path connecting the first mixing pump to the flow balancing pump; the cartridge further comprising a first check valve having an inlet in fluid communication with said fluid flow path, said check valve configured to open if the pressure in the fluid flow path exceeds a predetermined pressure to allow excess fluid in the fluid flow path to flow through the first check valve to a drain, and to close when the pressure in the fluid flow path falls back below said predetermined pressure.

摘要翻译： 一种用于血液透析机的药筒，所述药筒包括透析液流路，所述透析液流路包括透析器，用于将透析液流输送至透析器的透析液流路; 第一混合泵，包括在凹形凹部和柔性膜之间具有固定体积的腔室，所述腔室用于接收预定体积的第一透析液溶液基底和一定体积的水; 一种流量平衡泵，包括：在凹形凹部和柔性膜之间具有固定体积的腔室，以及容纳透析液的入口; 将第一混合泵连接到流量平衡泵的流体流路; 所述盒还包括第一止回阀，所述第一止回阀具有与所述流体流动路径流体连通的入口，所述止回阀被配置为如果所述流体流路中的压力超过预定压力以打开，以允许所述流体流路中的过量流体流过 第一止回阀到排水管，并且当流体流路中的压力回落到所述预定压力以下时关闭。

公开(公告)号：US08194776B2

公开(公告)日：2012-06-05

申请号：US12704111

申请日：2010-02-11

申请人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

发明人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

IPC分类号： H04B7/02

CPC分类号： H04L5/023

摘要： Transmitter and receiver units for use in an OFDM communications system and configurable to support multiple types of services. The transmitter unit includes one or more encoders, a symbol mapping element, and a modulator. Each encoder receives and codes a respective channel data stream to generate a corresponding coded data stream. The symbol mapping element receives and maps data from the coded data streams to generate modulation symbol vectors, with each modulation symbol vector including a set of data values used to modulate a set of tones to generate an OFDM symbol. The modulator modulates the modulation symbol vectors to provide a modulated signal suitable for transmission. The data from each coded data stream is mapped to a respective set of one or more “circuits”. Each circuit can be defined to include a number of tones from a number of OFDM symbols, a number of tones from a single OFDM symbol, all tones from one or more OFDM symbols, or some other combination of tones. The circuits can have equal size or different sizes. Different circuits can be used for full rate data (e.g., active speech) and low rate data (e.g., silence periods).

摘要翻译： 发射机和接收机单元，用于OFDM通信系统并可配置为支持多种类型的业务。 发射机单元包括一个或多个编码器，符号映射元件和调制器。 每个编码器接收和编码相应的信道数据流以生成对应的编码数据流。 符号映射元件接收并映射来自编码数据流的数据以产生调制符号向量，其中每个调制符号向量包括用于调制一组音调以生成OFDM符号的一组数据值。 调制器调制调制符号向量以提供适于传输的调制信号。 来自每个编码数据流的数据被映射到一个或多个“电路”的相应集合。 每个电路可以被定义为包括来自多个OFDM符号的多个音调，来自单个OFDM符号的多个音调，来自一个或多个OFDM符号的所有音调，或一些其它音调组合。 电路可以具有相同的尺寸或不同的尺寸。 不同的电路可以用于全速率数据（例如，活动语音）和低速率数据（例如，静默时段）。

公开(公告)号：US20110317671A1

公开(公告)日：2011-12-29

申请号：US13227946

申请日：2011-09-08

申请人： Jay R. Walton ,  John W. Ketchum ,  Steven J. Howard ,  Mark Wallace

发明人： Jay R. Walton ,  John W. Ketchum ,  Steven J. Howard ,  Mark Wallace

IPC分类号： H04W92/00 ,  H04J3/00 ,  H04B1/707

CPC分类号： H04W52/12 ,  H04B1/692 ,  H04L5/0021 ,  H04L5/0048 ,  H04L5/026 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/2655 ,  H04W52/286

摘要： In one aspect of a multiple-access OFDM-CDMA system, data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e.g., spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of the downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on.

摘要翻译： 在多址OFDM-CDMA系统的一个方面，通过用从一组可用的扩展码中选择的相应的扩展码扩展每个数据流，在频域中执行数据扩展。 为了支持多次访问，可以向用户分配和分配系统资源（例如，可以根据需要将扩展​​码分配给用户，并且发送功率可以被分配给用户）。 可以通过扩展调整和发射功率缩放的组合来支持每个用户的可变速率数据。 还提供干扰控制技术以通过下行链路和/或上行链路传输的功率控制来提高系统性能，以实现期望的性能水平同时最小化干扰。 每个发射机单元可以发送导频，以帮助接收机单元执行采集，定时同步，载波恢复，切换，信道估计，相干数据解调等。

公开(公告)号：US20100038384A1

公开(公告)日：2010-02-18

申请号：US11886355

申请日：2006-03-16

申请人： Mark Wallace ,  Ryan John Chessar ,  Clive Justin Edmunds ,  Jeremy Carey ,  Michael Cameron Bainton

发明人： Mark Wallace ,  Ryan John Chessar ,  Clive Justin Edmunds ,  Jeremy Carey ,  Michael Cameron Bainton

IPC分类号： B67D7/58 ,  B65D83/00 ,  B65B1/04

CPC分类号： B67D1/102 ,  B67D1/0079 ,  B67D2001/0812 ,  F04B23/02

摘要： A fluid dosing cartridge (110) comprising a fluid reservoir (112), a delivery conduit (114) with an output nozzle (22), a nozzle socket (24), a pump chamber (42) and plunger (44), and a check valve assembly (118). The check valve assembly (118) comprises a valve housing (26), defining a valve chamber (32), and first (34), second (36) and third (38) valve ports, and first and second check valves (28, 30). Each check valve (28, 30) comprises a stainless steel ball (46) resiliently biased under the action of a spring (50) and a valve seat (48). The valve seat (48) comprises a body member (52) and a circular wall member (56) defining a valve aperture (54). The valve seat (48) is formed from an ethylene based octene polymer material to give the valve seat (48) a degree of material compliance, such that the sealing section (56a) of the wall member (56) deforms under contact with the resiliently biased stainless steel ball (46), to thereby improve the seal closure between the valve seat (48) and the stainless steel ball (46).

摘要翻译： 包括流体储存器（112），具有输出喷嘴（22）的输送导管（114），喷嘴插座（24），泵室（42）和柱塞（44））的流体计量盒（110） 止回阀组件（118）。 止回阀组件（118）包括限定阀室（32）以及第一（34），第二（36）和第三（38）阀口的阀壳体（26），以及第一和第二止回阀（28， 30）。 每个止回阀（28,30）包括在弹簧（50）和阀座（48）的作用下弹性偏压的不锈钢球（46）。 阀座（48）包括主体构件（52）和限定阀孔（54）的圆壁构件（56）。 阀座（48）由乙烯基辛烯聚合物材料形成，以使得阀座（48）具有一定程度的材料柔顺性，使得壁构件（56）的密封部分（56a）在弹性地接触时变形 偏压不锈钢球（46），从而改善阀座（48）和不锈钢球（46）之间的密封封闭。

公开(公告)号：US07664193B2

公开(公告)日：2010-02-16

申请号：US11297244

申请日：2005-12-07

申请人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

发明人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

IPC分类号： H04B7/02

CPC分类号： H04L5/023

摘要： For certain embodiments of the present disclosure, a method and apparatus for generating pilots in a wireless multiple-input multiple output (MIMO) communication system is provided. The method comprises obtaining at least one pilot symbol for each antenna of a plurality of antennas, obtaining an orthogonal sequence for each antenna in the plurality of antennas, and covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbols for each of the plurality of antennas.

摘要翻译： 对于本公开的某些实施例，提供了一种用于在无线多输入多输出（MIMO）通信系统中生成导频的方法和装置。 该方法包括获得多个天线中的每个天线的至少一个导频符号，为多个天线中的每个天线获得正交序列，并用正交序列覆盖每个天线的至少一个导频符号，以获得序列 的每个天线的覆盖的导频符号，以获得用于多个天线中的每一个的至少一个被覆盖的导频符号。

公开(公告)号：US20080056305A1

公开(公告)日：2008-03-06

申请号：US11751471

申请日：2007-05-21

申请人： Irina Medvedev ,  Jay Walton ,  Mark Wallace ,  Steven Howard

发明人： Irina Medvedev ,  Jay Walton ,  Mark Wallace ,  Steven Howard

IPC分类号： H04B3/10

CPC分类号： H04L27/0014 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/061 ,  H04L27/261 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2027/0053 ,  H04L2027/0067 ,  H04L2027/0087

摘要： Techniques for performing phase correction for wireless communication are described. Received pilot symbols and received data symbols may be obtained from an orthogonal frequency division multiplexing (OFDM) and/or multiple-input multiple-output (MIMO) transmission. First phase information is obtained based upon the received pilot symbols. Second phase information is obtained based upon the received data symbols. The phase of the received data symbols is corrected based upon the first and second phase information (directly and/or indirectly). For example, the phase of the received data symbols may be corrected based upon the first phase information, detection may be performed on the phase corrected data symbols to obtain estimated data symbols, the second phase information may be obtained based upon the estimated data symbols, and the phase of the estimated data symbols may be corrected based upon the second phase information. The phase correction may also be performed in other manners.

摘要翻译： 描述用于执行无线通信的相位校正的技术。 可以从正交频分复用（OFDM）和/或多输入多输出（MIMO）传输中获得接收到的导频符号和接收的数据符号。 基于接收到的导频符号获得第一相位信息。 基于接收到的数据符号获得第二相位信息。 基于第一和第二相位信息（直接和/或间接地）校正接收到的数据符号的相位。 例如，可以基于第一相位信息来校正接收到的数据符号的相位，可以对相位校正数据符号执行检测以获得估计的数据符号，可以基于估计的数据符号获得第二相位信息， 并且可以基于第二相位信息来校正估计数据符号的相位。 相位校正也可以以其他方式进行。