Method and apparatus for power control in a multiple antenna system
    4.
    发明申请
    Method and apparatus for power control in a multiple antenna system 审中-公开
    多天线系统中功率控制的方法和装置

    公开(公告)号:US20060262874A1

    公开(公告)日:2006-11-23

    申请号:US11240252

    申请日:2005-09-30

    申请人: TieJun Shan

    发明人: TieJun Shan

    IPC分类号: H04L1/02

    摘要: A method and apparatus for use in a CDMA-type or OFDM/OFDMA-based multi-antenna system first selects an initial set of antenna weights and multiplies the selected antenna weights by copies of a transmission signal to produce a weighted transmission signal. In an OFDM/OFDMA-based implementation, a selected set of sub-carriers are modulated with the signal copies and then weighted using the antenna weights. The weighted transmission signal is transmitted using an initial overall transmission power. If an acknowledgement is not received within a predetermined time interval, the antenna weights are adjusted and/or the sub-carriers are reselected and a modified weighted transmission signal is transmitted. The overall transmission power is maintained at a fixed value as the antenna weights and/or selected sub-carriers are adjusted and is increased only if an acknowledgment is not received after a predetermined number of weight adjustments and/or sub-carrier re-selections.

    摘要翻译: 一种在基于CDMA / OFDM / OFDMA的多天线系统中使用的方法和装置首先选择初始天线权重集合,并通过传输信号的副本将选定的天线权重相乘以产生加权的传输信号。 在基于OFDM / OFDMA的实现中,使用信号副本对所选择的一组子载波进行调制,然后使用天线权重进行加权。 使用初始总发送功率发送加权发送信号。 如果在预定时间间隔内没有接收到确认,则天线权重被调整和/或重新选择副载波,并且发送修改后的加权发送信号。 当天线权重和/或选择的子载波被调整并且只有在预定次数的权重调整和/或副载波重新选择之后没有接收到确认时,总的发射功率被保持在固定值。