Compact floating point delta encoding for complex data
    21.
    发明授权
    Compact floating point delta encoding for complex data 有权
    用于复杂数据的紧凑型浮点增量编码

    公开(公告)号:US08972359B2

    公开(公告)日:2015-03-03

    申请号:US11303990

    申请日:2005-12-19

    IPC分类号: G06F17/00 H03M7/30

    摘要: A method and apparatus for compression of complex data signals within a telecommunications base station. The method includes representing a sample of a complex value discrete time signal using 2(L−N)−S mantissa bits and 2N+S exponent bits to realize peak output signal to noise ratios over a wider dynamic range compared to a conventional L-bit uniform quantization format. The increases in dynamic range and peak output SNR is achieved without increasing the average number of data bits per sample and with relatively simple computational effort.

    摘要翻译: 一种用于压缩电信基站内复杂数据信号的方法和装置。 该方法包括使用2(L-N)-S尾数位和2N + S指数位来表示复值离散时间信号的样本,以在较宽的动态范围内实现峰值输出信噪比,与传统的L位 均匀量化格式。 实现动态范围和峰值输出SNR的增加,而不增加每个样本的平均数据位数,并以相对简单的计算工作量。

    Fluorescent bulb compactor and mercury vapor recovery system
    22.
    发明授权
    Fluorescent bulb compactor and mercury vapor recovery system 有权
    荧光灯泡压实机和汞蒸气回收系统

    公开(公告)号:US08827194B2

    公开(公告)日:2014-09-09

    申请号:US11278516

    申请日:2006-04-03

    IPC分类号: B02C19/00 B02C21/00

    CPC分类号: B02C19/0068

    摘要: A fluorescent bulb compactor and mercury vapor recovery system that allows for the safe collection and disposal of crushed or broken fluorescent lamps, while recovering substantially 100% of the hazardous mercury vapors contained within the lamps. A fluorescent lamp is inserted within a drum and broken into fragments by one or more blades, with the fragment falling to the bottom of the drum. The mercury vapors that are emitted from the broken fluorescent lamps are forced out of the drum by negative positive pressure created by a vacuum/filter assembly. Once through the filter assembly, which includes a HEPA filter and activated carbon filter, the gases are permitted to escape into the environment virtually 100% free of mercury toxins.

    摘要翻译: 一种荧光灯泡压实机和水银蒸汽回收系统,可以安全地收集和处理破碎或破碎的荧光灯,同时回收灯中所含有的有害汞蒸气。 荧光灯被插入滚筒内并被一个或多个叶片分成碎片,碎片落到滚筒的底部。 从破碎的荧光灯发出的汞蒸气被真空/过滤器组件产生的负压力从鼓中排出。 一旦通过包括HEPA过滤器和活性炭过滤器的过滤器组件,允许气体逃逸到环境中,几乎100%没有汞毒素。

    CDMA probe for self-testing base station receivers
    23.
    发明授权
    CDMA probe for self-testing base station receivers 有权
    用于自检基站接收机的CDMA探头

    公开(公告)号:US08219076B2

    公开(公告)日:2012-07-10

    申请号:US11572434

    申请日:2005-07-19

    IPC分类号: H04W24/00 H04B17/00

    CPC分类号: H04W24/00

    摘要: An access probe existing and generated within a base station to simulate a mobile terminal for the purpose of testing base station receive functionality within a communications system. The access probe data is injected at baseband rather than at RF to eliminate the need for analog/RF circuitry. The access probe performs injection at the front end of the base station receiver to exercise as much receive data path as possible. A unique ID is embedded in the access probes so that the communications system is aware which probes within a sequence were received successfully and at what power level. Within in-field applications, the unique ID allows the communications system to distinguish simulated access probes from those corresponding to real mobiles.

    摘要翻译: 存在并在基站内生成的接入探针以模拟移动终端,以便测试基站在通信系统内接收功能。 接入探头数据在基带而不是射频注入,以消除对模拟/射频电路的需要。 接入探测器在基站接收机的前端执行注入以尽可能多的接收数据路径。 访问探针中嵌入了唯一的ID,以便通信系统知道序列中的哪些探针成功接收并以什么功率级别接收。 在现场应用中,唯一的ID允许通信系统将模拟的接入探针与对应于真实移动台的接入探头区分开。

    Low Sample Rate Peak Power Reduction
    24.
    发明申请
    Low Sample Rate Peak Power Reduction 有权
    低采样率峰值功率降低

    公开(公告)号:US20120064848A1

    公开(公告)日:2012-03-15

    申请号:US13125625

    申请日:2010-09-15

    IPC分类号: H04B1/04 H03L5/02

    CPC分类号: H04L27/2623

    摘要: Peak power reduction in transmit chains of radiocommunication devices is performed using a low sample rate. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path.

    摘要翻译: 无线电通信设备的发射链中的峰值功率降低使用低采样率来执行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。

    Cdma Probe for Self-Testing Base Station Receivers
    26.
    发明申请
    Cdma Probe for Self-Testing Base Station Receivers 有权
    用于自检基站接收机的Cdma探头

    公开(公告)号:US20080096543A1

    公开(公告)日:2008-04-24

    申请号:US11572434

    申请日:2005-07-19

    IPC分类号: H04Q7/34

    CPC分类号: H04W24/00

    摘要: An access probe existing and generated within a base station to simulate a mobile terminal for the purpose of testing base station receive functionality within a communications system. The access probe data is injected at baseband rather than at RF to eliminate the need for analog/RF circuitry. The access probe performs injection at the front end of the base station receiver to exercise as much receive data path as possible. A unique ID is embedded in the access probes so that the communications system is aware which probes within a sequence were received successfully and at what power level. Within in-field applications, the unique ID allows the communications system to distinguish simulated access probes from those corresponding to real mobiles.

    摘要翻译: 存在并在基站内生成的接入探针以模拟移动终端,以便测试基站在通信系统内接收功能。 接入探头数据在基带而不是射频注入,以消除对模拟/射频电路的需要。 接入探测器在基站接收机的前端执行注入以尽可能多的接收数据路径。 访问探针中嵌入了唯一的ID,以便通信系统知道序列中的哪些探针成功接收并以什么功率级别接收。 在现场应用中,唯一的ID允许通信系统将模拟的接入探针与对应于真实移动台的接入探头区分开。

    Systems and methods for implementing large CDMA cell sizes
    28.
    发明授权
    Systems and methods for implementing large CDMA cell sizes 有权
    用于实现大型CDMA小区大小的系统和方法

    公开(公告)号:US06577616B1

    公开(公告)日:2003-06-10

    申请号:US09473712

    申请日:1999-12-29

    IPC分类号: H04B7216

    摘要: Methods and apparatuses are provided for CDMA (code division multiple access) access availability to a large cell area, and for traffic channel establishment. A group of cell site modems are configured to look for access attempts generated in respective complete and/or sectorized circular or annular shaped areas centered at the center of the cell area, the areas collectively covering the cell area. To achieve this, each cell site modem has a local clock and the local clock within the first of the cell site modems is synchronized with a standard network time, and the local clock of each of the subsequent cell site modems is offset by a respective delay with respect to the standard network time which causes the cell site modem to search within its respective annular shaped area. A cell site modem is also made available as a traffic cell site modem and is operable to have its traffic acquisition search window centered at a location of an access attempt. Alternatively, a plurality of traffic cell site modems may be provided, each having dedicated circular or annular coverage areas within the cell. The traffic cell site modems also preferably have a local clock which may be synchronized, either to a standard network time, or to a respective delay which causes it to search in its respective area. Methods and for handing off between circular and annular shaped traffic coverage areas are also provided.

    摘要翻译: 为大容量区域的CDMA(码分多址)访问可用性和业务信道建立提供了方法和装置。 一组小区站点调制解调器被配置为寻找在以小区区域的中心为中心的各个完整和/或分区的圆形或环形区域中产生的访问尝试,区域集中地覆盖小区区域。 为了实现这一点,每个小区站点调制解调器具有本地时钟,并且第一小区站点调制解调器内的本地时钟与标准网络时间同步,并且后续小区站点调制解调器中的每一个的本地时钟被相应的延迟 相对于导致小区现场调制解调器在其各自的环形区域内搜索的标准网络时间。 小区站点调制解调器还可作为业务小区站点调制解调器使用,并且可操作以使其业务获取搜索窗口以访问尝试的位置为中心。 或者,可以提供多个业务小区站点调制解调器,每个业务小区站点调制解调器在小区内具有专用的圆形或环形覆盖区域。 业务小区站点调制解调器还优选地具有可以与标准网络时间同步的本地时钟,或者使得其在其相应区域中搜索的相应延迟。 还提供了在圆形和环形交通覆盖区域之间切断的方法。

    Method and apparatus for performing soft handoff between cells of large differing radii
    29.
    发明授权
    Method and apparatus for performing soft handoff between cells of large differing radii 失效
    用于在大的不同半径的单元之间进行软切换的方法和装置

    公开(公告)号:US06553230B1

    公开(公告)日:2003-04-22

    申请号:US09292662

    申请日:1999-04-16

    IPC分类号: H04Q720

    CPC分类号: H04W48/10 H04W36/18 H04W56/00

    摘要: A method for allowing a mobile station to find a code transmitted by a base station which has a propagation delay to the mobile station which is much larger or smaller than a propagation delay between the mobile station and a base station from which it derived a time reference is provided. In the context of IS-95, a PN offset is sent to the mobile station to identify which target base station pilot signals to search for. By sending a virtual PN offset which differs from the real PN offset, the mobile station can find the target base station signals where normally they would fall outside the mobile station's search window.

    摘要翻译: 一种用于允许移动台找到由移动台传播延迟的基站发送的代码,该移动台远远大于或小于移动站与基站之间的传播延迟,从该基站导出时间基准 被提供。 在IS-95的上下文中,向移动台发送PN偏移,以识别要搜索的哪个目标基站导频信号。 通过发送与实际PN偏移不同的虚拟PN偏移,移动台可以找到目标基站信号,正常情况下它们将落在移动台的搜索窗口之外。

    Method and apparatus for regulation of the effective noise figure in a CDMA receiver

    公开(公告)号:US06304561B1

    公开(公告)日:2001-10-16

    申请号:US08996996

    申请日:1997-12-23

    IPC分类号: H04B7216

    CPC分类号: H04B1/707

    摘要: The present invention relates to a method for effecting regulation of the effective noise figure of a CDMA (Code Division Multiple Access) receiver. The regulation process can be used to control the receiver during the activation/deactivation of a cell/sector in a CDMA wireless system and during normal operation when the service area of the cell/sector needs to enlarge or shrink. In a most preferred embodiment the CDMA receiver includes a source of pseudo-random noise that is injected in the received signal, downstream of the signal digitization stage. A power detector measures the power in the received digitized signal and a program logic determines the amount of noise figure degradation to be applied. The actual noise power regulation is effected by multiplying the output of the noise generator by a weighing factor. In a multi-channel CDMA system, each channel is provided with an independent system to regulate the effective noise power figure degradation, thus allowing to effect a noise figure regulation on a channel by channel basis.