中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

78 records (took 0.022 seconds)

    METHOD AND SYSTEM FOR DC COMPENSATION AND AGC
    12.
    发明专利
    METHOD AND SYSTEM FOR DC COMPENSATION AND AGC 未知

    公开(公告)号：CA2718235C

    公开(公告)日：2016-07-19

    申请号：CA2718235

    申请日：2009-03-09

    Applicant: QUALCOMM INC

    Inventor： KADOUS TAMER A ,  YAO IWEN ,  WANG JIBING ,  JING WEIHONG ,  LI YONG

    IPC: H04L25/06

    Abstract: A technique for performing AGC and DC compensation in a receiver. The receiver comprises an energy estimator for generating an estimate of the level of a received signal; an RF device to apply gain to the received signal; an AGC for controlling the RF device gain based on the energy estimation; a first DC compensation loop for finely adjusting the DC component of the received signal in fast or slow tracking mode (FTM or STM); and a second DC compensation loop for coarsely adjusting the DC component of the received signal. Three modes of AGC operations: In Acquisition, iterations of FTM fine DC adjustment, short energy estimation, and RF device gain adjustment are performed during signal timing detection. In Connected, long energy estimation, RF device gain adjustment, and STM fine and coarse DC adjustments are performed during superframe preamble. In Sleep, FTM fine DC adjustment, short energy estimation, and RF device gain adjustment are performed during superframe preamble.

    PRECODING FOR SEGMENT SENSITIVE SCHEDULING IN WIRELESS COMMUNICATION SYSTEMS
    13.
    发明专利
    PRECODING FOR SEGMENT SENSITIVE SCHEDULING IN WIRELESS COMMUNICATION SYSTEMS 未知

    公开(公告)号：CA2627401C

    公开(公告)日：2015-05-05

    申请号：CA2627401

    申请日：2006-10-27

    Applicant: QUALCOMM INC

    Inventor： GORE DHANANJAY ASHOK ,  SAMPATH HEMANTH ,  WANG JIBING ,  KADOUS TAMER ,  BARRIAC GWENDOLYN D

    IPC: H04B1/16 ,  H04L5/02 ,  H04L25/02

    Abstract: Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.

    PRECODING AND SDMA SUPPORT
    14.
    发明专利
    PRECODING AND SDMA SUPPORT 未知

    公开(公告)号：CA2620610C

    公开(公告)日：2014-04-22

    申请号：CA2620610

    申请日：2006-08-30

    Applicant: QUALCOMM INC

    Inventor： GOROKHOV ALEXEI ,  GORE DHANANJAY ASHOK ,  BARRIAC GWENDOLYN D ,  WANG JIBING ,  KADOUS TAMER

    IPC: H04W8/20 ,  H04W8/18 ,  H04W28/16 ,  H04W36/26

    Abstract: Embodiments are described in connection with enhancing performance in a wireless communication system using codebook technology. According to an embodiment is a method for enhancing performance in a wireless communication environment. The method can include receiving a user preference for a transmission mode, associating the user preference with an entry or entries in a codebook, and assigning the user to a transmission mode corresponding to the entry or entries. The transmission mode can be one of a precoding, space division multiple access (SDMA), SDMA precoding, multiple input multiple output (MIMO), MIMO precoding, MEVIO- SDMA and a diversity. Each entry can correspond to a transmission mode.

    MULTI - RADIO IN - DEVICE COEXISTENCE
    16.
    发明专利
    MULTI - RADIO IN - DEVICE COEXISTENCE 未知

    公开(公告)号：CA2839263A1

    公开(公告)日：2012-12-27

    申请号：CA2839263

    申请日：2012-06-19

    Applicant: QUALCOMM INC

    Inventor： WANG JIBING ,  LINSKY JOEL BENJAMIN ,  TSOU ERIC Y

    IPC: H04W72/12

    Abstract: In a multi-radio user equipment, communications on a Long Term Evolution (LTE) radio and Wireless Local Area Network (WLAN) radio operating in Wi-Fi mode may be aligned to reduce interference between the two radios. Communications of the WLAN radio may be aligned to the LTE radio using Notice of Absence (NoA) functionality.

    17.
    发明专利
    未知

    公开(公告)号：BRPI0617872A2

    公开(公告)日：2011-08-09

    申请号：BRPI0617872

    申请日：2006-10-27

    Applicant: QUALCOMM INC

    Inventor： WANG JIBING ,  BARRIAC GWENDOLYN D ,  GOROKHOV ALEXEI ,  SAMPATH HEMANTH ,  KADOUS TAMER

    IPC: H04B7/005 ,  G06F40/00 ,  H04B7/06 ,  H04W52/42

    Abstract: Systems and methodologies are described that facilitate estimating transmit covariance from evaluation of a channel (e.g., forward link channel, reverse link channel, . . . ) to be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication systems. Predefined codebooks that include any number of precoding matrices may be modified based upon transmit covariance estimations to yield improved precoding performance. Further, channel related feedback may be generated and analyzed by utilizing the modified codebooks.

    ПОДДЕРЖКА ПРЕДВАРИТЕЛЬНОГО КОДИРОВАНИЯ И SDMA
    18.
    发明专利
    ПОДДЕРЖКА ПРЕДВАРИТЕЛЬНОГО КОДИРОВАНИЯ И SDMA 未知

    公开(公告)号：UA93053C2

    公开(公告)日：2011-01-10

    申请号：UAA200803885

    申请日：2006-08-30

    Applicant: QUALCOMM INC

    Inventor： HOROHOV ALEKSEI ,  GORE DHANANDZHAJ ASHOK ,  BARRIAK GWENDOLYN D ,  WANG JIBING ,  KADOUS TAMER

    IPC: H04L1/00 ,  H04W16/02 ,  H04B7/04 ,  H04B7/06

    Abstract: Вариантыосуществленияописаныв связис повышениемпроизводительностив системебеспроводнойсвязи, котораяиспользуеттехнологиютаблицыкодирования. Согласновариантуосуществления, предусмотренспособповышенияпроизводительностив средебеспроводнойсвязи. Способвключаетв себяприемпользовательскихпреимуществдлярежимапередачи, ассоциативноесвязываниепользовательскихпреимуществс записьюилизаписямив таблицекодированияи назначениепользователярежимапередачи, соответствующейзаписиилизаписям. Режимомпередачиможетбытьодинизследующих: предварительноекодирование, множественныйдоступс пространственнымразделениемканалов (SDMA), предварительноекодирование SDMA, смногимивходамии многимивыходами (МИМО), предварительноеМимо-Кодирование, MIMO-SDMA иразнесение. Каждаязаписьможетсоответствоватьреж

    20.
    发明专利
    未知

    公开(公告)号：NO20082363L

    公开(公告)日：2008-07-08

    申请号：NO20082363

    申请日：2008-05-23

    Applicant: QUALCOMM INC

    Inventor： GORE DHANANJAY ASHOK ,  SAMPATH HEMANTH ,  KADOUS TAMER ,  BARRIAC GWENDOLYN D ,  WANG JIBING

    IPC: H04L5/02 ,  H03M13/35 ,  H04B7/06 ,  H04L27/32

    Abstract: Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.

Patent Agency Ranking