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    APPARATUS AND METHOD OF MULTIPLE ANTENNA TRANSMITTER BEAMFORMING OF HIGH DATA RATE WIDEBAND PACKETIZED WIRELESS COMMUNICATION SIGNALS
    2.
    发明申请
    APPARATUS AND METHOD OF MULTIPLE ANTENNA TRANSMITTER BEAMFORMING OF HIGH DATA RATE WIDEBAND PACKETIZED WIRELESS COMMUNICATION SIGNALS 审中-公开
    高数据速率宽带无线通信信号的多天线发射机波束的装置和方法

    公开(公告)号：WO2005036775A2

    公开(公告)日：2005-04-21

    申请号：PCT/US2004033081

    申请日：2004-10-06

    Applicant: ATHEROS COMM INC ,  CHOI WON-JOON ,  TEHRANI ARDAVAN M ,  GILBERT JEFFREY M ,  NG SAMUEL

    Inventor： CHOI WON-JOON ,  TEHRANI ARDAVAN M ,  GILBERT JEFFREY M ,  NG SAMUEL

    IPC: H04B7/06 ,  H04L25/02 ,  H04L27/26

    CPC classification number: H04L27/2626 ,  H04B7/0617 ,  H04L25/0206 ,  H04L27/2608 ,  H04L27/2614

    Abstract: The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and (2) M Inverse Fast Fourier Transform units (IFFTs) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.

    Abstract translation: 本发明提供了一种高数据速率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法，其中每个信号包括N个频率，其中N是正整数。 在示例性实施例中，该装置包括：（1）发射波束形成器，其对M个天线中的每个N个频率的信号进行共相并加权，由此产生M个同相和加权的频率数据;（2）M 将M个相位和加权频率数据转换为M个数字输出的傅里叶变换单元（IFFT），以及发射M个同相加权信号的M个发射天线，其中M是大于或等于2的整数。

    3.
    发明专利
    未知

    公开(公告)号：DE60129945D1

    公开(公告)日：2007-09-27

    申请号：DE60129945

    申请日：2001-03-23

    Applicant: ATHEROS COMM INC

    Inventor： TEHRANI ARDAVAN M ,  GILBERT JEFFREY M ,  MCFARLAND WILLIAM J ,  THON LARS E ,  WANG YI-HSIU ,  THOMSON JOHN S ,  HUSTED PAUL J

    IPC: H04L1/00 ,  H03M13/25 ,  H03M13/41 ,  H04J11/00 ,  H04L25/03 ,  H04L25/06 ,  H04L27/38

    Abstract: A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between good and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.

    APPARATUS AND METHOD TO COMBINE HIGH DATA RATE WIDEBAND PACKETIZED SIGNALS IN A MULTIPLE ANTENNA RECEIVER
    5.
    发明专利
    APPARATUS AND METHOD TO COMBINE HIGH DATA RATE WIDEBAND PACKETIZED SIGNALS IN A MULTIPLE ANTENNA RECEIVER 未知

    公开(公告)号：CA2541601C

    公开(公告)日：2012-09-11

    申请号：CA2541601

    申请日：2004-10-06

    Applicant: ATHEROS COMM INC

    Inventor： TEHRANI ARDAVAN M ,  CHOI WON-JOON ,  GILBERT JEFFREY M ,  WANG YI HSIU

    IPC: H04L27/26 ,  H04B7/08

    Abstract: The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.

    APPARATUS AND METHOD TO COMBINE HIGH DATA RATE WIDEBAND PACKETIZED SIGNALS IN A MULTIPLE ANTENNA RECEIVER
    9.
    发明专利
    APPARATUS AND METHOD TO COMBINE HIGH DATA RATE WIDEBAND PACKETIZED SIGNALS IN A MULTIPLE ANTENNA RECEIVER 未知

    公开(公告)号：CA2541601A1

    公开(公告)日：2005-04-21

    申请号：CA2541601

    申请日：2004-10-06

    Applicant: ATHEROS COMM INC

    Inventor： TEHRANI ARDAVAN M ,  CHOI WON-JOON ,  WANG YI HSIU ,  GILBERT JEFFREY M

    IPC: H04L27/26 ,  H04B7/08

    Abstract: The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.

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