MIMO TRANSMISSION AND RECEPTION METHODS AND DEVICES
    3.
    发明申请
    MIMO TRANSMISSION AND RECEPTION METHODS AND DEVICES 失效
    MIMO传输和接收方法和设备

    公开(公告)号:US20080212704A1

    公开(公告)日:2008-09-04

    申请号:US12060647

    申请日:2008-04-01

    IPC分类号: H04L27/28

    摘要: In a wireless transmitting device which performs transmission by an OFDM using a plurality of subcarriers orthogonal to each other, a plurality of preambles to which a plurality of different subcarrier groups selected from a plurality of subcarriers within an OFDM signal band are allocated are transmitted by using a plurality of transmit antennas, and data is transmitted by using the antennas after the preambles are transmitted.

    摘要翻译: 在通过使用彼此正交的多个子载波进行OFDM的传输的无线发送装置中,通过使用分配了从OFDM信号频带内的多个子载波中选择的多个不同子载波组的多个前同步码 多个发送天线,并且在发送前导码之后通过使用天线来发送数据。

    RADIO RECEIVER AND RADIO SIGNAL PROCESSING METHOD
    4.
    发明申请
    RADIO RECEIVER AND RADIO SIGNAL PROCESSING METHOD 审中-公开
    无线电接收机和无线电信号处理方法

    公开(公告)号:US20070224960A1

    公开(公告)日:2007-09-27

    申请号:US11750598

    申请日:2007-05-18

    IPC分类号: H04B1/06

    摘要: A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a baseband signal; a second amplifier to amplify the baseband signal; a demodulator to demodulate the baseband signal amplified by said second amplifier; and a gain controller to control timing of a change in a gain of said second amplifier, in case that changing the gain of said first amplifier and the gain of said second amplifier, on the basis of a gain of said first amplifier before and after the change.

    摘要翻译: 无线电接收机包括:放大接收的无线电信号的第一放大器; 正交解调器,用于解调由所述第一放大器放大的无线电信号,从而产生基带信号; 第二放大器,用于放大基带信号; 解调器,用于解调由所述第二放大器放大的基带信号; 以及增益控制器,用于在根据所述第一放大器的增益前后改变所述第一放大器的增益和所述第二放大器的增益的情况下,控制所述第二放大器的增益变化的定时 更改。