Method of modeling a CDMA cellular telephone system
    1.
    发明授权
    Method of modeling a CDMA cellular telephone system 失效
    CDMA蜂窝电话系统建模方法

    公开(公告)号:US06424643B1

    公开(公告)日:2002-07-23

    申请号:US09263572

    申请日:1999-03-08

    申请人: Stanley Gutowski

    发明人: Stanley Gutowski

    IPC分类号: H04B7208

    CPC分类号: H04W52/40 H04W52/24

    摘要: A computer implemented process which utilizes actual received signal level data gathered from closely spaced locations covering an entire CDMA system to calculate interference levels at each location, determines those base stations which most probably communicate with a mobile unit at each particular location, compiles a list of neighbor base stations for each base station at each location throughout the system, and determines the transmit power necessary for each base station to communicate with a mobile unit at each location, calculates interference levels at each base station, and determines the transmit power necessary for a mobile unit at each location to communicate with each base station which most probably communicates with a mobile unit at that particular location.

    摘要翻译: 计算机实现的过程利用覆盖整个CDMA系统的紧密间隔的位置收集的实际接收信号电平数据来计算每个位置处的干扰电平,确定最可能与每个特定位置处的移动单元通信的那些基站,编译一个列表 并且确定每个基站与每个位置处的移动单元进行通信所需的发射功率,计算每个基站处的干扰电平,并且确定每个基站所需的发射功率 每个位置处的移动单元与每个基站通信,该基站最可能与该特定位置处的移动单元进行通信。

    Fuel cell CO sensor
    3.
    发明授权
    Fuel cell CO sensor 失效
    燃料电池CO传感器

    公开(公告)号:US6001499A

    公开(公告)日:1999-12-14

    申请号:US957563

    申请日:1997-10-24

    摘要: The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.

    摘要翻译: 通过测量来自与重整油进料流连通的PEM探针的电流和/或电压行为模式来监测通向PEM燃料电池堆的H 2进料流中的CO浓度。 可以使用模式识别软件来比较从PEM探针的电流和电压模式到从类似于PEM探针的参考细胞确定的电流和电压指示输出,并且在受控条件下在H2范围内的CO浓度范围内操作 燃料流。 CO传感器包括PEM探针,用于放电PEM探针以监测CO浓度的放电电路,以及电清洗电路,以间断地将PEM探针的阳极的阳极电位提高至至少约0.8V(RHE )电化学氧化吸附在探针的阳极催化剂上的任何CO。

    Hydrogen sensor
    4.
    发明授权
    Hydrogen sensor 失效
    氢传感器

    公开(公告)号:US5670115A

    公开(公告)日:1997-09-23

    申请号:US543541

    申请日:1995-10-16

    IPC分类号: G01N27/04 G01N27/12

    CPC分类号: G01N27/12

    摘要: A sensor for hydrogen is disclosed comprising an electrically insulating substrate carrying a thin amorphous film of co-deposited nickel and zirconium and an overlying film of palladium wherein during the operation of the sensor, hydrogen in a sample gas is dissociated on the palladium film and diffuses into the nickel-zirconium film to change its electrical resistance in proportion to the amount of hydrogen in the sample to be analyzed.

    摘要翻译: 公开了一种用于氢的传感器,其包括承载共沉积的镍和锆的薄无定形膜和钯的上覆膜的电绝缘基板,其中在传感器的操作期间,样品气体中的氢在钯膜上解离并扩散 进入镍 - 锆膜,以与要分析的样品中的氢量成比例地改变其电阻。

    Access point operating with a smart antenna in a WLAN and associated methods
    5.
    发明授权
    Access point operating with a smart antenna in a WLAN and associated methods 失效
    WLAN中的智能天线接入点和相关方法

    公开(公告)号:US07366464B2

    公开(公告)日:2008-04-29

    申请号:US11144113

    申请日:2005-06-03

    IPC分类号: H04B7/14

    摘要: An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.

    摘要翻译: 接入点在与客户站通信的802.11无线通信网络中操作,并且包括用于生成定向天线波束的智能天线和全向天线波束。 天线导向算法扫描定向天线波束和全向天线波束,用于从客户端接收信号。 测量经由每个扫描天线波束接收到的信号,并且基于与客户站进行通信的测量来选择天线波束之一。 所选择的天线波束优选地是定向天线波束。 一旦选择了定向天线波束,就有几种与客户端交换数据的使用规则。 使用规则被引导到接入点的活动状态,其包括数据传输模式和数据接收模式。

    Access point operating with a smart antenna in a WLAN and associated methods
    6.
    发明申请
    Access point operating with a smart antenna in a WLAN and associated methods 失效
    WLAN中的智能天线接入点和相关方法

    公开(公告)号:US20050285803A1

    公开(公告)日:2005-12-29

    申请号:US11144113

    申请日:2005-06-03

    IPC分类号: H04W16/24 H04Q7/00

    摘要: An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.

    摘要翻译: 接入点在与客户站通信的802.11无线通信网络中操作,并且包括用于生成定向天线波束的智能天线和全向天线波束。 天线导向算法扫描定向天线波束和全向天线波束,用于从客户端接收信号。 测量经由每个扫描天线波束接收到的信号,并且基于与客户站进行通信的测量来选择天线波束之一。 所选择的天线波束优选地是定向天线波束。 一旦选择了定向天线波束,就有几种与客户端交换数据的使用规则。 使用规则被引导到接入点的活动状态,其包括数据传输模式和数据接收模式。

    Method of controlling injection of oxygen into hydrogen-rich fuel cell feed stream
    7.
    发明授权
    Method of controlling injection of oxygen into hydrogen-rich fuel cell feed stream 有权
    控制氧气进入富氢燃料电池进料流的方法

    公开(公告)号:US06265092B1

    公开(公告)日:2001-07-24

    申请号:US09550054

    申请日:2000-04-14

    IPC分类号: H01M804

    摘要: A method of operating a H2—O2 fuel cell fueled by hydrogen-rich fuel stream containing CO. The CO content is reduced to acceptable levels by injecting oxygen into the fuel gas stream. The amount of oxygen injected is controlled in relation to the CO content of the fuel gas, by a control strategy that involves (a) determining the CO content of the fuel stream at a first injection rate, (b) increasing the O2 injection rate, (c) determining the CO content of the stream at the higher injection rate, (d) further increasing the O2 injection rate if the second measured CO content is lower than the first measured CO content or reducing the O2 injection rate if the second measured CO content is greater than the first measured CO content, and (e) repeating steps a-d as needed to optimize CO consumption and minimize H2 consumption.

    摘要翻译: 一种运行由含有CO的富氢燃料流燃料的H 2 -O 2燃料电池的方法通过将氧气注入到燃料气流中将CO含量降低到可接受的水平。 通过控制策略来控制注入的氧气量,该控制策略涉及(a)以第一喷射速率确定燃料流的CO含量,(b)增加O 2喷射速率, (c)以更高的喷射速率确定流的CO含量,(d)如果第二测量的CO含量低于第一测量的CO含量,则进一步提高O 2喷射速率,或者如果第二测量的CO 含量大于第一测量的CO含量,(e)根据需要重复步骤ad以优化CO消耗并最小化H2消耗。