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    101.
    发明专利
    未知

    公开(公告)号：BRPI0513885A

    公开(公告)日：2008-05-20

    申请号：BRPI0513885

    申请日：2005-07-29

    Applicant: QUALCOMM INC

    Inventor： WANG MICHAEL MAO ,  LING FUYUN ,  MURALI RAMASWAMY ,  VIJAYAN RAJIV

    IPC: H04L1/00

    Abstract: A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

    104.
    发明专利
    未知

    公开(公告)号：BRPI0414065A

    公开(公告)日：2006-10-24

    申请号：BRPI0414065

    申请日：2004-09-02

    Applicant: QUALCOMM INC

    Inventor： VIJAYAN RAJIV ,  KHANDEKAR AAMOD ,  LING FUYUN ,  WALKER KENT ,  MURALI RAMASWAMY

    IPC: H04H20/00 ,  H04J3/24 ,  H04L1/00 ,  H04L5/02 ,  H04L5/06 ,  H04L25/02 ,  H04L27/26 ,  H04W4/06 ,  H04W28/06 ,  H04W72/04 ,  H04J11/00 ,  H04Q7/00 ,  H04B7/00 ,  H04L12/28

    Abstract: Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in “super-frames”. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

    Method and apparatus for adaptive linear equalization for walsh covered modulation.
    108.
    发明专利
    Method and apparatus for adaptive linear equalization for walsh covered modulation. 未知

    公开(公告)号：HK1060232A1

    公开(公告)日：2004-07-30

    申请号：HK04103146

    申请日：2004-05-05

    Applicant: QUALCOMM INC

    Inventor： SMEE JOHN E ,  JALALI AHMAD ,  LING FUYUN ,  WALLACE MARK

    IPC: H04L27/01 ,  H04B1/7097 ,  H04B7/005 ,  H04L25/03 ,  H04L27/22 ,  H04L ,  H04B

    Abstract: A receive filter receives signals from a communication channel. The received signals correspond to original Walsh covered chip sequences transmitted by a transmit filter through the communication channel to the receive filter. The received signals are processed by an equalizer to generate a soft estimate of chip sequences corresponding to the original Walsh covered chip sequences. An N chip Walsh decover is then utilized to generate a soft estimate of code symbols corresponding to the soft estimate of the chip sequences. A number of symbol slicers are then used in parallel to produce a hard estimate of the code symbols corresponding to the soft estimate of code symbols generated by the N chip Walsh decover. Thereafter an N chip Walsh cover is used as part of a scheme to generate a hard estimate of chip sequences corresponding to the hard estimate of the code symbols generated by the symbol slicers. The hard estimate of the chip sequences generated with the aid of the N chip Walsh cover, and the soft estimate of the chip sequences generated by the equalizer, are used to generate a tracking mode error signal to adapt the response of the equalizer to the received signals.

    Amplitude and phase estimation method in a wireless communication system
    109.
    发明专利
    Amplitude and phase estimation method in a wireless communication system 未知

    公开(公告)号：AU769552B2

    公开(公告)日：2004-01-29

    申请号：AU4835400

    申请日：2000-05-10

    Applicant: QUALCOMM INC

    Inventor： LING FUYUN

    IPC: H04B1/7085 ,  H04B1/7115 ,  H04B7/005 ,  H04L25/02 ,  H04Q7/38 ,  H04B1/707

    Abstract: Apparatus for a transmitter and a receiver which enhance the performance of a system coherent demodulation by utilizing non-pilot sub-channels to enhance the accuracy of estimates of amplitude and phase noise inherent in the transmission channel is described. This enhancement is accomplished by utilizing the corrected received data on a fundamental channel to enhance a pilot channel estimate, which is subsequently utilized by a dot product module in demodulating a supplementary data channel.

    System and method for the demodulation of turbo-encoded signals via pilot assisted coherent demodulation
    110.
    发明专利
    System and method for the demodulation of turbo-encoded signals via pilot assisted coherent demodulation 未知

    公开(公告)号：HK1052597A1

    公开(公告)日：2003-09-19

    申请号：HK03104754

    申请日：2003-07-04

    Applicant: QUALCOMM INC

    Inventor： LING FUYUN ,  SINDHUSHAYANA NAGABHUSHANA T ,  ESTEVES EDUARDO A S

    IPC: H04B1/7097 ,  H04L20060101 ,  H03M13/23 ,  H03M13/25 ,  H03M13/29 ,  H04L1/20

    Abstract: An efficient telecommunications receiver system for accurately decoding a received composite signal having a data signal component and a pilot signal component includes a first circuit for receiving the composite signal and extracting a pilot signal and a data signal from received composite signal. A second circuit calculates a log-likelihood ratio as a function of a channel estimate based on the pilot signal. A third circuit scales the log-likelihood ratio by a predetermined log-likelihood ratio scaling factor and provides an accurate log-likelihood value in response thereto. A fourth circuit decodes the received composite signal based on the accurate log-likelihood value and the data signal. The third circuit includes a carrier signal-to-interference ratio circuit for computing a first signal-to-interference ratio and a second signal-to-interference ratio based partly on the pilot signal.

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