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    • 1. 发明申请
    • SPECTRUM SHARING AND MANAGEMENT OF COGNITIVE TRANSMISSION
    • 认知传播的光谱共享和管理
    • WO2011126570A3
    • 2012-02-02
    • PCT/US2011000632
    • 2011-04-06
    • UNIV LELAND STANFORD JUNIORERICSSON TELEFON AB L MSACHS JOACHIMMARIC IVANAGOLDSMITH ANDREA
    • SACHS JOACHIMMARIC IVANAGOLDSMITH ANDREA
    • H04W16/16H04B7/26H04W16/32
    • H04W16/14H04W52/243
    • A wireless spectrum is shared between a primary communication system and secondary communication system operating in an overlapping geographical region. A primary transmitter broadcasts a primary signal, and a secondary transmitter transmits a secondary signal, both using a primary wireless spectrum assigned to the primary communication system. The secondary transmitter transmits the secondary signal to a secondary receiver with power (1-a)P and transmits the primary signal with power aP. The parameter a is computed to ensure a predetermined quality of reception of the primary signal by a hypothetical primary receiver located near the secondary transmitter. The secondary transmitter may compute a feasibility of using cognitive transmission and, when the computed feasibility exceeds or does not exceed a feasibility threshold, it selects to enable or disable, respectively, the use of the primary wireless spectrum to transmit from the secondary transmitter.
    • 无线频谱在主要通信系统和在重叠地理区域中操作的次要通信系统之间共享。 主要发射机广播主要信号,次要发射机使用分配给主要通信系统的主要无线频谱来发送辅助信号。 次级发射机将次级信号发射到具有功率(1-a)P的次级接收机,并以功率aP发送主信号。 计算参数a以通过位于次级发射机附近的假想主接收机确保主信号的预定接收质量。 次级发射机可以计算使用认知传输的可行性,并且当所计算的可行性超过或不超过可行性阈值时,它选择分别启用或禁用主要无线频谱从次级发射机发射的使用。