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    METHODS AND SYSTEMS FOR REDUCING PAPR OF AN OFDM SIGNAL
    31.
    发明专利
    METHODS AND SYSTEMS FOR REDUCING PAPR OF AN OFDM SIGNAL 未知

    公开(公告)号：CA2728904A1

    公开(公告)日：2010-01-14

    申请号：CA2728904

    申请日：2009-07-08

    Applicant: QUALCOMM INC

    Inventor： KIM JE WOO ,  NAGUIB AYMAN FAWZY ,  PARK JONG HYEON ,  CHANG TAE RYUN

    IPC: H04L27/26

    Abstract: Certain embodiments of the present disclosure provide a method and an apparatus for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The method may utilize a permutation of a time domain signal, and/or a permutation of a frequency domain signal or a permutation of a signal transformed by a unitary matrix. The apparatus may include an M-point DFT or some other MxM unitary matrix, N-point IDFT, interpolation and frequency conversion units, and a pair of possibly different permutation matrices of size MxM, where M can be less or equal than N.

    METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS
    32.
    发明专利
    METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS 未知

    公开(公告)号：CA2667805A1

    公开(公告)日：2008-05-15

    申请号：CA2667805

    申请日：2007-11-05

    Applicant: QUALCOMM INC

    Inventor： KIM JE WOO ,  PARK JU WON ,  PARK JONG HYEON

    IPC: H04L27/26

    Abstract: In accordance with a detection method in a wireless communication system, an initial hypothesis for a starting position of a desired signal within a received wireless communication signal may be determined. The desired signal may have a conjugate symmetric property. At least one correlation value may be determined based on the initial hypothesis. The at least one correlation value may indicate the extent to which at least one sample sequence selecte d from the received signal has the conjugate symmetric property.

    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES
    36.
    发明专利
    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES 未知

    公开(公告)号：CA2710773C

    公开(公告)日：2014-02-04

    申请号：CA2710773

    申请日：2008-07-17

    Applicant: QUALCOMM INC

    Inventor： PARK JONG HYEON ,  SIM BOK TAE ,  KIM JE WOO ,  GLAZKO SERGUEI A ,  NANAVATI SAMEER ,  PARK JU WON ,  LEE CHUN WOO ,  CHANG TAE RYUN

    IPC: H04L1/00

    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.

    METHODS AND APPARATUS FOR MAXIMUM RATIO COMBINING FOR DUPLICATED SIGNALS IN OFDMA SYSTEMS
    37.
    发明专利
    METHODS AND APPARATUS FOR MAXIMUM RATIO COMBINING FOR DUPLICATED SIGNALS IN OFDMA SYSTEMS 未知

    公开(公告)号：CA2710674C

    公开(公告)日：2013-09-24

    申请号：CA2710674

    申请日：2008-06-16

    Applicant: QUALCOMM INC

    Inventor： PARK JONG HYEON ,  CHANG TAE RYUN ,  KIM JE WOO

    IPC: H04L27/26

    Abstract: In accordance with a method for processing a received orthogonal frequency division multiple access (OFDMA) signal that comprises a duplicated signal, sub-carriers within the OFDMA signal may be arranged into a duplicated format. The OFDMA signal may be equalized and combined after the sub-carriers have been arranged into the duplicated format. The equalizing and combining may be performed in accordance with a maximum ratio combining (MRC) scheme. The OFDMA signal may be demapped after the equalizing and combining is performed.

    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES
    40.
    发明专利
    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES 未知

    公开(公告)号：CA2710773A1

    公开(公告)日：2009-07-16

    申请号：CA2710773

    申请日：2008-07-17

    Applicant: QUALCOMM INC

    Inventor： PARK JONG HYEON ,  SIM BOK TAE ,  KIM JE WOO ,  GLAZKO SERGUEI A ,  NANAVATI SAMEER ,  PARK JU WON ,  LEE CHUN WOO ,  CHANG TAE RYUN

    IPC: H04L1/00

    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.

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