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    • 32. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING ACQUISITION IN POWER SAVE MODE FOR WIRELESS COMMUNICATION SYSTEMS
    • 用于无线通信系统节电模式采集的方法和装置
    • WO2004043128A3
    • 2005-02-03
    • PCT/US0334502
    • 2003-10-29
    • QUALCOMM INC
    • JOSHI ABHAY AHUTCHISON JAMES ABLACK PETER JTURNER SIMONEKVETCHAVIT THUNYACHATE
    • H04L12/28H04W48/18H04W88/06H04Q7/38
    • H04W48/18H04W88/06Y02D70/00Y02D70/1224
    • Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a "ping-pong" manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.
    • 有效地尝试采集分组数据系统(例如,IS-856系统)的技术。 如果终端已经在语音/数据系统(例如,IS-2000系统)中获取了一个或多个信道,则它可以尝试在分组数据系统中与所获取的信道在与语音/ 数据系统 可以使用多个采集模式,并且可以一次使用一个采集模式来执行同位置信道上的持续采集尝试,以便降低功耗。 收购尝试可以以“乒乓”方式进行,以提高获取的可能性。 对于乒乓搜索,在对每个剩余通道进行获取尝试之前,在最近获取的通道上进行采集尝试。 也可以对所选择的信道获得接收的信号强度估计,并且可以用于确定是否尝试在这些信道上进行采集。
    • 34. 发明申请
    • PN GENERATORS FOR SPREAD SPECTRUM COMMUNICATIONS SYSTEMS
    • 用于传播频谱通信系统的PN发生器
    • WO0156172A3
    • 2002-02-21
    • PCT/US0103243
    • 2001-01-31
    • QUALCOMM INC
    • BLACK PETER JPADOVANI ROBERTOWEAVER LINDSAY A JR
    • H03K3/84H04B1/707H04J13/00H04J13/10H04Q7/38H04B7/26
    • H04J13/10H03K3/84H04B1/707H04J13/0022
    • Techniques to improve the acquisition process in a spread spectrum environment. The signals from different CDMA systems are spread with different sets of PN sequences, with the PN sequences in each set being uncorrelated to the PN sequences in the other sets. By using uncorrelated PN sequences, the likehood of detecting a pilot signal from an undesired system is reduced or minimized, and the mean time to acquisition of the pilot signal from the desired system is improved. The mobile station can attempt to acquire the pilot signal by processing the received signal with a first set of PN sequences corresponding to a first hypothesis of the particular signal being acquired. If acquisition of the pilot signal fails, a second set of PN sequences corresponding to a second hypothesis is selected and used to process the received signal. The PN sequences in the second set are uncorrelated to the PN sequences in the first set. The PN sequences for the first set can be generated based on the characteristic polynomials defined by IS-95-A, and the PN sequences for the second set can be the reverse of the PN sequences for the first set.
    • 在扩展频谱环境中改进采集过程的技术。 来自不同CDMA系统的信号用不同的PN序列集合扩展,每组中的PN序列与其他集合中的PN序列不相关。 通过使用不相关的PN序列,检测来自不需要的系统的导频信号的相似性被减少或最小化,并且提高了从所需系统获取导频信号的平均时间。 移动台可以通过用对应于所获取的特定信号的第一假设的第一组PN序列处理接收到的信号来尝试获取导频信号。 如果导频信号的获取失败,则选择对应于第二假设的第二组PN序列来处理接收到的信号。 第二组中的PN序列与第一组中的PN序列不相关。 可以基于由IS-95-A定义的特征多项式来生成第一组的PN序列,并且第二组的PN序列可以是第一组的PN序列的相反。
    • 35. 发明申请
    • DUAL-MODE FM/CDMA COMMUNICATION SYSTEM
    • 双模FM / CDMA通信系统
    • WO9620540A3
    • 1996-09-06
    • PCT/US9516363
    • 1995-12-19
    • QUALCOMM INC
    • BLACK PETER JWILSON NATHANIEL B
    • H04L27/10H04B1/04H04B1/40H04B7/26H04L25/49H04L27/14H04L27/233H04W4/18H04W88/06H04J15/00
    • H04B1/406H04B2201/70707H04L25/4904H04L27/142H04L27/2337H04W4/18H04W88/06
    • A dual-mode digital communication system for communicating an information signal during operation in frequency-modulated (FM) and multiple-access modes is disclosed herein. The digital communication system includes a dual-mode transmitter (14) for transmitting the information signal using an FM communication signal during FM mode operation, and for transmitting the information signal using a multiple-access communication signal during multiple-access mode operation. The communication system further includes a dual-mode receiver (16) for receiving the FM communication signal during FM mode operation, and for receiving the multiple-access communication signal during multiple-access mode operation. Incorporated within the dual-mode receiver (16) is a digital demodulator (96) for recovering the information signal from the received FM signal during operation in the FM mode, and for recovering the information signal from the received multiple-access signal during multiple-access mode operation. 00000
    • 这里公开了一种用于在频率调制(FM)和多接入模式中的操作期间传送信息信号的双模式数字通信系统。 数字通信系统包括用于在FM模式操作期间使用FM通信信号发送信息信号的双模发送器(14),并且在多址模式操作期间使用多址通信信号发送信息信号。 通信系统还包括用于在FM模式操作期间接收FM通信信号的双模式接收器(16),并且用于在多址模式操作期间接收多址通信信号。 在双模式接收器(16)中并入的是数字解调器(96),用于在FM模式下操作期间从接收到的FM信号中恢复信息信号,并且用于在多模式接收器(16)期间从所接收的多址信号中恢复信息信号, 访问模式操作。 00000