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    METHOD OF RECEIVING AND SEARCHING A SIGNAL TRANSMITTING IN BURSTS
    82.
    发明授权
    METHOD OF RECEIVING AND SEARCHING A SIGNAL TRANSMITTING IN BURSTS 失效
    用于接收和搜索的In方法迸发出发送的信号

    公开(公告)号：EP0824802B1

    公开(公告)日：2002-11-06

    申请号：EP96919001.6

    申请日：1996-05-02

    Applicant: QUALCOMM INCORPORATED

    Inventor： ZIV, Noam, A. ,  PADOVANI, Roberto ,  LEVIN, Jeffrey, A. ,  EASTON, Kenneth, D.

    IPC: H04B7/26 ,  H04B1/707

    CPC classification number: H04B1/70752 ,  H04B1/707 ,  H04B1/70756 ,  H04B1/7113 ,  H04B1/7117 ,  H04B7/2628 ,  H04B2201/70703 ,  H04J13/0048

    Abstract: An integrated search processor (128) used in a modem (110) for a spread spectrum communications system buffers in a buffer (172) received signals samples and utilizes a time sliced transform processor (120) operating on successive offsets from the buffer (172). The search processor (128) autonomously steps through a search as configured by a microprocessor (136) specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor (128) calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element (122) reassignment. The search is done in a linar fashion independent of the probability that a signal being searched for was transmitted at any given time.

    NOISE CHARACTERIZATION IN A WIRELESS COMMUNICATION SYSTEM
    84.
    发明公开
    NOISE CHARACTERIZATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    噪声表征无线通信系统

    公开(公告)号：EP1135884A1

    公开(公告)日：2001-09-26

    申请号：EP99962990.0

    申请日：1999-12-02

    Applicant: QUALCOMM Incorporated

    Inventor： PADOVANI, Roberto

    IPC: H04L1/20

    CPC classification number: H04L1/208 ,  H04L1/20

    Abstract: The character of the noise in a series of incoming symbols received over a wireless link is determined. A series of corresponding bits are recovered (72) based upon the series of incoming symbols. The series of corresponding bits are encoded (72) to determine a series of recovered symbols. A vector product of the series of incoming symbols and the series of recovered symbols is determined (74). A difference between two symbols within the vector product is determined (76), wherein the two symbols were transmitted over the wireless link in close temporal proximity to one another. The expected value of a non-orthogonal noise portion of the series of incoming symbols is determined (78) based upon an expected value of the difference between the two symbols.

    METHOD FOR ROBUST HANDOFF IN WIRELESS COMMUNICATION SYSTEM
    85.
    发明公开
    METHOD FOR ROBUST HANDOFF IN WIRELESS COMMUNICATION SYSTEM 有权
    方法对于稳定NEXT丰富的无线通信系统

    公开(公告)号：EP1116407A1

    公开(公告)日：2001-07-18

    申请号：EP99948348.0

    申请日：1999-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： GROB, Matthew, S. ,  PADOVANI, Roberto ,  BENDER, Paul, E. ,  HOAGLAND, Greg M. ,  KIMBALL, Robert, H. ,  KARMI, Gadi

    IPC: H04Q7/38

    CPC classification number: H04W36/18 ,  H04B17/318 ,  H04W36/30

    Abstract: A communication system that allows a soft handoff to be completed, even when the communications link between the active base station and the mobile station deteriorates before the mobile station (101) has received the handoff direction message. The mobile station maintains a list of base stations that the mobile station (101) is in communication with, referred to as an 'Active Set'. In addition, the mobile station (101) maintains another list of base stations (300) that are proximate to the base stations (300) in the active set. This list is referred to as the 'Neighbor Set'. A memory within the mobile station (101) includes information that would allow the mobile station (101) to demodulate information transmitted from those base stations (300) on the neighbor set. In accordance with the disclosed method and apparatus, the mobile station (101) places a base station (300) in the active set upon including the base station (300) in a pilot strength measurement message (PSMM).

    METHOD AND SYSTEM FOR THE DYNAMIC MODIFICATION OF CONTROL PARAMETERS IN A TRANSMITTER POWER CONTROL SYSTEM
    87.
    发明授权
    METHOD AND SYSTEM FOR THE DYNAMIC MODIFICATION OF CONTROL PARAMETERS IN A TRANSMITTER POWER CONTROL SYSTEM 失效
    方法及系统的传输功率控制系统动力学修改调整参数

    公开(公告)号：EP0685129B1

    公开(公告)日：1998-04-01

    申请号：EP94907396.9

    申请日：1994-02-01

    Applicant: QUALCOMM INCORPORATED

    Inventor： PADOVANI, Roberto ,  ZIV, Noam

    IPC: H04B7/005

    CPC classification number: H04W52/267 ,  H04B2201/70705 ,  H04L1/0046 ,  H04L1/08 ,  H04L1/201 ,  H04L25/0262 ,  H04W52/12 ,  H04W52/20 ,  H04W52/50

    Abstract: In a communication system in which direct sequence spread spectrum modulation techniques are used, interference is generated in communications by remote stations since the communications share the same frequency spectrum. In order to increase system capacity the power level of the remote station transmitters are controlled by the local station. A setpoint in generated at the local station by a power control processor (118) and compared by a comparator (120) with the remote station signal strength measured at the local station by a power averager (114). The result of this comparison is used to generate power level adjustment commands by a command generator (122) which are transmitted to the remote station. The remote station is responsive to the power level adjustment commands for increasing or decreasing remote station transmitter power. In a spread spectrum communication system in which data is encoded at variable data rates, the local station determines via a rate determination processor (116) the rate at which received data was encoded by the transmitting remote station. The data is decoded by decoder (112) at each possible rate with error metrics generated that are representative of the quality of the data decoded at each rate. A rate decision algorithm is used by processor (116) to evaluate the error metrics and make a decision on the rate at which the data was transmitted. A pattern match of rate decisions is used by processor (118) to modify a setpoint so as to closely control the transmitting power of the remote station as a function of the quality of the received data.

    Abstract translation: 由于通信共享相同的频谱在其中直接序列扩频调制技术的通信系统中使用的干扰是由远程站的通信中产生。 为了提高系统容量的远程站发射机的功率电平是由本地站控制。 设定点是由本地站生成并与在本地站测得的远程站的信号强度相比较。 该比较的结果被用来生成被发送到远程站的功率电平调整的命令。 远程站响应于用于增加或减少远程站发射机功率的功率电平调整的命令。 在其中的数据的扩展频谱通信系统在可变数据速率进行编码，本地站确定性地雷的速率接收到由发送远程站编码数据。 数据在每个可能的速率进行解码以生成误差度量确实代表的数据的质量的解码在每个速率。 一个利率决策算法来评估误差度量，并在利率决定在哪个数据，反式mitted。 的速率决定的图案匹配用于修改的设定点以便紧密地控制远程站的发射功率作为接收的数据的质量的函数。

    PILOT SIGNAL SEARCHING TECHNIQUE FOR A CELLULAR COMMUNICATIONS SYSTEM
    89.
    发明公开
    PILOT SIGNAL SEARCHING TECHNIQUE FOR A CELLULAR COMMUNICATIONS SYSTEM 失效
    导频信号的搜索方法一ZELLULOSES传输系统

    公开(公告)号：EP0793895A2

    公开(公告)日：1997-09-10

    申请号：EP95944040.0

    申请日：1995-11-22

    Applicant: QUALCOMM INCORPORATED

    Inventor： PADOVANI, Roberto ,  HAMDY, Walid ,  BAR-DAVID, Gil

    IPC: H04J13 ,  H04B1 ,  H04B7 ,  H04W36

    CPC classification number: H04W36/30 ,  H04B1/707 ,  H04B7/2637

    Abstract: An improved method and system for performing a pilot signal searching operation in anticipation of handoff in mobile station (18) communication between base stations (12, 14). The mobile station (18) maintains a list of Active Set pilot signals transmitted from base stations with which the mobile station is to communicate through, and a list of Neighbor Set pilot signals (N) from base stations within a predetermined proximity of the mobile station (18). The searching operation contemplates comparing pilot signal strength measurements corresponding to each base station entry within the Neighbor Set (N) to a first predetermined level. One or more entries from the Neighbor Set (N) having a base station signal strength measurement greater than the first predetermined level may be placed in the Pre-Candidate Set (PC). The strength of the pilot signals associated with entries in the Pre-Candidate Set (PC) are then further evaluated to determine eligibility within the Candidate Set (C), from which are selected the entries comprising the Active Set.

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