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    • 21. 发明申请
    • MULTIPLEXED CDMA AND GPS SEARCHING
    • 多路复用CDMA和GPS搜索
    • US20100222076A1
    • 2010-09-02
    • US12776071
    • 2010-05-07
    • Wang Paul PoonQiuzhen Zou
    • Wang Paul PoonQiuzhen Zou
    • H04W64/00
    • H04B1/708G01S19/30G01S19/34G01S19/37H04B1/70754H04B1/70758H04B2201/70711
    • Searcher hardware is multiplexed to perform simultaneous searches in either an IS-95 CDMA mode or a GPS mode. In the IS-95 mode, the search hardware is time-multiplexed into a number of searcher time slices, each of which can generate a PN sequence to despread a data sequence. In the GPS mode, the search hardware is configured as a number of distinct GPS channels, each of which can generate a Gold code sequence for tracking a GPS signal from a particular GPS satellite. This configuration allows the searcher to perform multiple GPS signal searches simultaneously. Signal searching in both IS-95 and GPS modes is performed at significantly higher speeds compared to conventional searcher hardware. Moreover, the search hardware can be dynamically configured to operate in either the IS-95 or the GPS mode, eliminating the need for dedicated circuitry for each mode of operation.
    • 搜索硬件被复用以在IS-95 CDMA模式或GPS模式中执行同时搜索。 在IS-95模式中,搜索硬件被时分复用到多个搜索器时间片中,每个搜索时间片可以产生PN序列来解扩数据序列。 在GPS模式中,搜索硬件被配置为多个不同的GPS信道,每个通道可以生成用于跟踪来自特定GPS卫星的GPS信号的金码序列。 该配置允许搜索者同时执行多个GPS信号搜索。 与传统的搜索器硬件相比,在IS-95和GPS模式下的信号搜索以更高的速度执行。 而且,搜索硬件可以被动态配置为在IS-95或GPS模式中操作,从而消除了对于每个操作模式的专用电路的需要。
    • 22. 发明授权
    • Multiplexed CDMA and GPS searching
    • 多路复用CDMA和GPS搜索
    • US07738533B2
    • 2010-06-15
    • US10041205
    • 2002-01-07
    • Wang Paul PoonQiuzhen Zou
    • Wang Paul PoonQiuzhen Zou
    • H04B1/707
    • H04B1/708G01S19/30G01S19/34G01S19/37H04B1/70754H04B1/70758H04B2201/70711
    • Searcher hardware is multiplexed to perform simultaneous searches in either an IS-95 CDMA mode or a GPS mode. In the IS-95 mode, the search hardware is time-multiplexed into a number of searcher time slices, each of which can generate a PN sequence to despread a data sequence. In the GPS mode, the search hardware is configured as a number of distinct GPS channels, each of which can generate a Gold code sequence for tracking a GPS signal from a particular GPS satellite. This configuration allows the searcher to perform multiple GPS signal searches simultaneously. Signal searching in both IS-95 and GPS modes is performed at significantly higher speeds compared to conventional searcher hardware. Moreover, the search hardware can be dynamically configured to operate in either the IS-95 or the GPS mode, eliminating the need for dedicated circuitry for each mode of operation.
    • 搜索硬件被复用以在IS-95 CDMA模式或GPS模式中执行同时搜索。 在IS-95模式中,搜索硬件被时分复用到多个搜索器时间片中,每个搜索时间片可以产生PN序列来解扩数据序列。 在GPS模式中,搜索硬件被配置为多个不同的GPS信道,每个通道可以生成用于跟踪来自特定GPS卫星的GPS信号的金码序列。 该配置允许搜索者同时执行多个GPS信号搜索。 与传统的搜索器硬件相比,在IS-95和GPS模式下的信号搜索以更高的速度执行。 而且,搜索硬件可以被动态配置为在IS-95或GPS模式中操作,从而消除了对于每个操作模式的专用电路的需要。
    • 25. 发明授权
    • Programmable matched filter searcher
    • 可编程匹配滤波器搜索器
    • US06363108B1
    • 2002-03-26
    • US09283010
    • 1999-03-31
    • Avneesh AgrawalQiuzhen Zou
    • Avneesh AgrawalQiuzhen Zou
    • H04B1707
    • H04B1/70758H04B1/70752H04B1/70775H04B1/708H04B1/7093H04B2201/7071
    • A novel and improved method and apparatus for searching is described. Channel data is despread utilizing a matched filter structure. The in-phase and quadrature amplitudes of the despreading delivered to coherent accumulators to sum for a programmable duration of time. The amplitude accumulations are squared and summed to produce an energy measurement. The energy measurement is accumulated for a second programmable time to perform non-coherent accumulation. The resulting value is used to determine the likelihood of a pilot signal at that offset. Each matched filter structure comprises an N-value shift register for receiving data, a programmable bank of taps to perform despreading and optional Walsh decovering, and an adder structure to sum the resulting filter tap calculations.
    • 描述了一种新颖的,改进的搜索方法和装置。 利用匹配的滤波器结构对信道数据进行解扩。 解扩展的同相和正交幅度传递到相干累加器,以在可编程的持续时间内求和。 幅度累积被平方并相加以产生能量测量。 对第二可编程时间累积能量测量以执行非相干累加。 所得到的值用于确定在该偏移处的导频信号的可能性。 每个匹配滤波器结构包括用于接收数据的N值移位寄存器,用于执行解扩和可选的沃尔什解密的抽头的可编程组,以及对所得到的滤波器抽头计算进行求和的加法器结构。
    • 27. 发明授权
    • Fast slewing pseudorandom noise sequence generator
    • 快速回转伪随机噪声序列发生器
    • US06154101A
    • 2000-11-28
    • US198079
    • 1998-11-23
    • Qiuzhen ZouGilbert C. SihAvneesh Agrawal
    • Qiuzhen ZouGilbert C. SihAvneesh Agrawal
    • G06F7/58H03K3/84H04B7/26H04J13/00H04J13/10H03B29/00
    • H04J13/0022G06F7/582H04J13/10
    • A novel and improved method and apparatus for a fast-slewing pseudorandom noise sequence generator is described. One or more loadable PN generators are controlled by a DSP or microprocessor in conjunction with a free-running counter which maintains a reference offset count. The PN generator will typically be part of a finger or searcher. The DSP or microprocessor may assist in other finger or searcher functions as well as the slew function, and can control one or more fingers and/or searchers. Each PN generator is comprised of a loadable linear feedback shift register (LFSR) or its equivalent, a loadable counter for maintaining an index of the state of that particular PN generator, and a slew control device capable of receiving a slew command and controlling the LFSR and index counter to enact an advance or a retard of a certain offset distance.
    • 描述了一种用于快速回转伪随机噪声序列发生器的新颖和改进的方法和装置。 一个或多个可加载的PN发生器由DSP或微处理器与自由运行的计数器结合来维持参考偏移计数来控制。 PN发生器通常是手指或搜索器的一部分。 DSP或微处理器可以协助其他手指或搜索器功能以及转换功能,并且可以控制一个或多个手指和/或搜索器。 每个PN发生器由可装载的线性反馈移位寄存器(LFSR)或其等效物组成,用于维持该特定PN发生器的状态的索引的可装载计数器以及能够接收转换命令并控制LFSR的转换控制装置 和索引计数器来产生某个偏移距离的提前或延迟。
    • 29. 发明授权
    • Method of computer based data card software downloading and updating
    • 基于计算机的数据卡软件下载和更新方法
    • US08332840B2
    • 2012-12-11
    • US12238923
    • 2008-09-26
    • Qiuzhen ZouChunlai YiFengchun Xu
    • Qiuzhen ZouChunlai YiFengchun Xu
    • G06F9/44
    • G06F8/65G06F9/4411
    • The present invention relates to a method of computer based data card software downloading and updating, in which, the data card connects with computer via data communication interface and acts the power on initial process at same time, the data card downloads software kit from computer to RAM memory, and the data card operates the software kit downloaded to the RAM memory. With this method of computer based data card software downloading and updating, no any more expensive Flash memory to be used in the data card, a lower cost is thus resulted, the data card failure resulted from Flash memory damage could be avoided and hence the data card reliability is increased; In course of data card downloading the update program and software from computer, it just needs re-update again only even though in fault, the complete operation is convenient and rapid with a wide suitable field, this lays the foundation of the advancing and development for the data communication peripheral equipment technology of portable equipment.
    • 本发明涉及一种基于计算机的数据卡软件下载和更新方法,其中数据卡通过数据通信接口与计算机连接,同时对初始进程起电,数据卡将软件从计算机下载到 RAM存储器,数据卡操作下载到RAM存储器的软件包。 使用这种基于计算机的数据卡软件下载和更新方法,在数据卡中不需要使用更昂贵的闪存,因此可以避免由于闪存损坏而导致的数据卡故障,因此数据 卡的可靠性提高; 在数据卡下载计算机的更新程序和软件的过程中,仅需要重新更新即使出现故障,整个操作在广泛的适用领域方便快捷,为进一步发展奠定了基础 便携式设备的数据通信外围设备技术。
    • 30. 发明申请
    • STEPS ONE AND THREE W-CDMA AND MULTI-MODE SEARCHING
    • 步骤一和三W-CDMA和多模式搜索
    • US20100202316A1
    • 2010-08-12
    • US12763646
    • 2010-04-20
    • Daisuke TerasawaDeepu JohnHao LiuQiuzhen ZouSivarama Krishnan Venkatesan
    • Daisuke TerasawaDeepu JohnHao LiuQiuzhen ZouSivarama Krishnan Venkatesan
    • H04L12/26
    • H04B1/70735H04B2201/70707H04B2201/7071
    • Techniques for efficient searching in asynchronous systems, such as W-CDMA, as well as multi-mode searching, are disclosed. In one aspect, step one and step three search are performed in a single search engine. In another aspect, a search engine is configurable to search the offsets of a slot in step one search, producing sequential hypothesis energies, and peak detecting and sorting those energies. In yet another aspect, the peak detector and sorter are configurable to perform step one searching or step three/multimode searching. Various other aspects of the invention are also presented. These aspects have the benefit of circuit area and search-time efficiency which translate into reduced costs, increased standby time, increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.
    • 公开了用于在诸如W-CDMA的异步系统中进行有效搜索的技术以及多模式搜索。 在一个方面,在单个搜索引擎中执行步骤1和步骤3搜索。 在另一方面,搜索引擎可配置为在步骤一搜索中搜索时隙的偏移量,产生顺序假设能量,以及峰值检测和排序这些能量。 在另一方面,峰值检测器和分类器可配置为执行步骤一搜索或步骤三/多模式搜索。 还提出了本发明的各种其它方面。 这些方面具有电路面积和搜索时间效率的优点,从而降低了成本,增加了待机时间,提高了采集速度,提高了信号传输质量,提高了数据吞吐量,降低了功耗,提高了整体系统容量。