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    142.
    发明专利
    未知

    公开(公告)号：NO20061881A

    公开(公告)日：2006-06-23

    申请号：NO20061881

    申请日：2006-04-27

    Applicant: INTERDIGITAL TECH CORP

    Inventor： GRIECO DONALD M ,  HAIM JOHN W ,  BULTAN AYKUT

    IPC: H04B7/005 ,  H04B7/26

    CPC classification number: H04B1/7117 ,  H04B1/7073 ,  H04B1/70754 ,  H04B1/708 ,  H04B1/7095 ,  H04B2201/70701

    Abstract: A method for determining the validity of a most significant path in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by accumulating a correlated data sequence N times, each time at a frame offset apart from the previous time. A preliminary noise estimate (PNE) is calculated as an average of the accumulated data values. A preliminary noise threshold (PNT) is calculated according to the equation C1xPNE. A final noise estimate (FNE) is calculated as the average of accumulated data values below the PNT. A final noise threshold (FNT) is calculated according to the equation C2xFNE. The validity of the most significant path is determined if the most significant path value is greater than the FNT.

    145.
    发明专利
    未知

    公开(公告)号：NO20054643D0

    公开(公告)日：2005-10-10

    申请号：NO20054643

    申请日：2005-10-10

    Applicant: INTERDIGITAL TECH CORP

    Inventor： GRIECO DONALD M ,  HAIM JOHN W ,  GUCCIONE LOUIS J ,  TYRA FRYDERYK

    IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B7/005 ,  H04J

    Abstract: An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function is activated for a given data sample block when the number of saturated data samples that are detected within the block exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing.

    Fast adaptive power control for a variable multirate communications system
    149.
    发明专利
    Fast adaptive power control for a variable multirate communications system 未知

    公开(公告)号：HK1060220A1

    公开(公告)日：2004-07-30

    申请号：HK04102899

    申请日：2004-04-26

    Applicant: INTERDIGITAL TECH CORP

    Inventor： HAIM JOHN W

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/24 ,  H04W52/26 ,  H04B

    Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

    150.
    发明专利
    未知

    公开(公告)号：NO20100271L

    公开(公告)日：2003-03-21

    申请号：NO20100271

    申请日：2010-02-23

    Applicant: INTERDIGITAL TECH CORP

    Inventor： HAIM JOHN W

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/24 ,  H04W52/26

    Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

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