中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

74 records (took 0.023 seconds)

    Turbo code interleaver using linear congruential sequence
    1.
    发明专利
    Turbo code interleaver using linear congruential sequence 有权
    使用线性相关序列的涡轮代码交互

    公开(公告)号：JP2011087329A

    公开(公告)日：2011-04-28

    申请号：JP2011000262

    申请日：2011-01-04

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： ROWITCH DOUGLAS N ,  LING FUNYUN

    IPC: G06F11/10 ,  H03M13/27 ,  H03M13/29 ,  H04L1/00

    CPC classification number: H03M13/2789 ,  H03M13/271 ,  H03M13/275 ,  H03M13/2764 ,  H03M13/2771 ,  H03M13/2957

    Abstract: PROBLEM TO BE SOLVED: To provide a turbo code interleaver using a linear congruential sequence.
    SOLUTION: The turbo code interleaver (100) using the linear congruential sequences is employed as a two-dimensional interleaver (16) in a turbo coder (10) including a first structure encoder and a second structure encoder (12, 14). The interleaver (16) and the first encoder (12) are each configured to receive input bits. The first encoder (12) generates output symbols (22, 24). The interleaver (16) sequentially receives the input bits by row. The second encoder (14) is configured to receive the interleaved bits from the interleaver. The second encoder (14) generates an output symbol (28).
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供使用线性同余序列的turbo码交织器。 解决方案：在包括第一结构编码器和第二结构编码器（12,14）的turbo编码器（10）中采用使用线性同余序列的turbo码交织器（100）作为二维交织器（16） 。 交织器（16）和第一编码器（12）都被配置为接收输入比特。 第一编码器（12）产生输出符号（22,24）。 交织器（16）逐行地依次接收输入。 第二编码器（14）被配置为从交织器接收交织的比特。 第二编码器（14）产生输出符号（28）。 版权所有（C）2011，JPO＆INPIT

    3.
    发明专利
    未知

    公开(公告)号：AT470272T

    公开(公告)日：2010-06-15

    申请号：AT00941402

    申请日：2000-06-13

    Applicant: QUALCOMM INC

    Inventor： BONACCORSO MARIO ,  LING FUNYUN ,  SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER

    IPC: H04B1/7117 ,  H04B1/10 ,  H04B1/707 ,  H04B1/709 ,  H04B7/08

    Abstract: An optimum combiner that reduces the amount of interference imposed upon a first base station (102) by transmissions of other base stations within the same communication system. Two antennas (112, 114) are used to receive transmissions within a receiving station (110). A rake receiver is coupled to each antenna (112, 114). By optimally combining the signals that are received by each independent finger of the rake receiver, interference that is correlated between a finger associated with the first antenna (112) and a finger associated with the second antenna (114) can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients. A max-ratio combining algorithm may be substituted for the optimal combining algorithm depending upon interference characteristics.

    4.
    发明专利
    未知

    公开(公告)号：NO328894B1

    公开(公告)日：2010-06-07

    申请号：NO20034052

    申请日：2003-09-12

    Applicant: QUALCOMM INC

    Inventor： SAINTS KEITH W ,  SINDHUSHAYANA NAGABHUSHANA T ,  HOLTZMAN JACK M ,  LING FUNYUN ,  CHEN TAO ,  WHEATLEY III CHARLES E

    IPC: H04B7/005 ,  H04B1/04 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  H04W52/12

    Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics include one of a re-encoded power metric and a modified Yamamoto metric. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

    5.
    发明专利
    未知

    公开(公告)号：DE60219605T2

    公开(公告)日：2008-01-03

    申请号：DE60219605

    申请日：2002-03-22

    Applicant: QUALCOMM INC

    Inventor： LING FUNYUN ,  WALTON JAY R ,  HOWARD STEVEN J ,  WALLACE MARK ,  KETCHUM JOHN W

    IPC: H04B7/00 ,  H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L27/26

    Abstract: Techniques for transmitting data from a transmitter unit to a receiver unit in a multiple-input mutiple-output (MIMO) communication system. In one method, at the receiver unit, a number of signals are received via a number of receive antennas, with the received signal from the transmitter unit. The received signals are processed to derive channel state information (CSI) indicative of characteristics of a number of transmission channels used for data transmission. The CSI is transmitted back to the transmitter unit. At the transmitter unit, the CSI from the receiver unit is received and data for transmission to the receiver units is processed based on the received CSI.

    6.
    发明专利
    未知

    公开(公告)号：BR0209640A

    公开(公告)日：2004-08-31

    申请号：BR0209640

    申请日：2002-05-17

    Applicant: QUALCOMM INC

    Inventor： KETCHUM JOHN W ,  HOWARD STEVEN J ,  WALTON JAY ROD ,  WALLACE MARK S ,  LING FUNYUN

    IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/26 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L5/06 ,  H04L25/03 ,  H04L27/26 ,  H04B7/00

    Abstract: Techniques are provided to process data for transmission over a set of transmission channels selected from among all available transmission channels. In an aspect, the data processing includes coding data based on a common coding and modulation scheme to provide modulation symbols and pre-weighting the modulation symbols for each selected channel based on the channel's characteristics. The pre-weighting may be achieved by "inverting" the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, "bad" channels are not used, and the total available transmit power is distributed across only "good" channels. Inproved performance is achieved due to the combined benefits of using only the best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.

    8.
    发明专利
    未知

    公开(公告)号：BR0015437A

    公开(公告)日：2003-07-15

    申请号：BR0015437

    申请日：2000-11-13

    Applicant: QUALCOMM INC

    Inventor： CHEN TAO ,  LING FUNYUN ,  TIEDEMANN EDWARD G JR

    IPC: H04B7/26 ,  H04B17/00 ,  H04W28/04 ,  H04B7/005 ,  H04Q7/38

    Abstract: In wireless communications, it is necessary to monitor the transmission quality of communications channels to maintain system performance and operation. The invention provides a way of measuring bit error rates in channels at the receiver, without diminishing channel throughput by inserting quality monitoring data into the signal at the transmitter.

    10.
    发明专利
    未知

    公开(公告)号：NO20015548D0

    公开(公告)日：2001-11-13

    申请号：NO20015548

    申请日：2001-11-13

    Applicant: QUALCOMM INC

    Inventor： LING FUNYUN ,  HOLTZMAN JACK M ,  WHEATLEY III CHARLES E ,  CHEN TAO ,  TIEDEMANN JR EDWARD G ,  LEUNG GILBERT

    IPC: H04B7/005 ,  H04B7/26 ,  H04W36/08 ,  H04W52/22 ,  H04W52/40 ,  H04W52/42 ,  H04Q

    Abstract: A method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system. The method includes when the pilot signal is transmitted by the mobile station that is power controlled to a target receive level, the traffic channel power level is increased relative to the pilot channel to improve receiver performance. An improved feature is that the received pilot received at the base station stays the same while the receiver receives extra energy in the redundant traffic symbols received to enhance the probability of correctly decoding the received frame. The base station detects the absence of the mobile station transmitted signal from the frequency of interest. If the base station is aware of the starting time and duration of the absence, it can focus its detection during this predetermined time period. The performance can be improved if the absence of the signal is spread across two frames at the frame boundary.

Patent Agency Ranking