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31 records (took 0.027 seconds)

    21.
    发明专利
    未知

    公开(公告)号：NO20074706L

    公开(公告)日：2007-11-13

    申请号：NO20074706

    申请日：2007-09-14

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAEWELL JR JOHN DAVID ,  REZNIK ALEXANDER ,  DIFAZIO ROBERT A ,  BECKER PETER EDWARD ,  LI BIN ,  PAN KYLE JUNG-LIN

    IPC: H04B7/005

    Abstract: A receiver or an integrated circuit (IC) incorporated therein includes a fast Fourier transform (FFT)-based (or hybrid FFT-based) sliding window block level equalizer (BLE) for generating equalized samples. The BLE includes a noise power estimator, first and second channel estimators, an FFT-based chip level equalizer (CLEQ) and a channel monitor unit. The noise power estimator generates a noise power estimate based on two diverse sample data streams. The channel estimators generate respective channel estimates based on the sample data streams. The channel monitor unit generates a first channel monitor signal including truncated channel estimate vectors based on the channel estimates, and a second channel monitor signal which indicates an approximate rate of change of the truncated channel estimate vectors. The FFT-based CLEQ generates the equalized samples based on the noise power estimate, one-block samples of the first and second sample data streams, the channel estimates and the monitor signals.

    25.
    发明专利
    未知

    公开(公告)号：NO20044077L

    公开(公告)日：2004-11-23

    申请号：NO20044077

    申请日：2004-09-27

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAEWELL JR JOHN DAVID ,  REZNIK ALEXANDER ,  MEYER JAN ,  BOHNHOFF PETER

    IPC: H04L7/00 ,  H04B1/7073 ,  H04W74/08 ,  H04J3/14

    Abstract: Apparatus and method for correlating a received communication of a known sequence over a wireless channel. Processing at the required higher sampling rate is achieved through the use of a finite impulse response (FIR) filter (24) having a small number of taps for interpolating samples. This reduces hardware requirement by as much as one-half that of conventional techniques based on over-sampling the received signal, while obtaining amplitude degradation which is no worse than experienced when employing conventional techniques.

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