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    • 7. 发明申请
    • CAPACITY OPTIMIZATION OF A WIRED CELLULAR NETWORK
    • 有线蜂窝网络的能力优化
    • WO2004093347A1
    • 2004-10-28
    • PCT/US2004/011386
    • 2004-04-13
    • QUALCOMM INCORPORATEDWEISSMAN, Haim
    • WEISSMAN, Haim
    • H04B7/08
    • H04B7/022H04B7/0491H04W88/08
    • A base-station transceiver system (BTS) operative in a cellular telephone network, consisting of a main up-link port and a diversity up-link port which are adapted to operate cooperatively to receive up-link signals over-the-air from cellular telephones such that both of the ports receive the up-link signals from each of the cellular telephones. The two ports are coupled to receive signals from wired telephones, such that the main up-link port receives signals only from a first group of the wired telephones and the diversity up-link port receives signals only from a second group of the wired telephones. The system also includes signal processing circuitry which is adapted to receive the signals from the up-link ports and convey the signals over the network.
    • 一种在蜂窝电话网络中操作的基站收发机系统(BTS),其由主上行链路端口和分集上行链路端口组成,其适于协同操作以从蜂窝状态接收空中的上行链路信号 电话,使得两个端口从每个蜂窝电话接收上行链路信号。 两个端口被耦合以从有线电话接收信号,使得主上行链路端口仅从第一组有线电话接收信号,并且分集上行链路端口仅从第二组有线电话接收信号。 该系统还包括适于从上行链路端口接收信号并通过网络传送信号的信号处理电路。
    • 8. 发明申请
    • APPARATUS AND METHODS FOR QAM MODULATION USING DUAL POLAR MODULATION
    • 使用双极调制的QAM调制的装置和方法
    • WO2011050033A1
    • 2011-04-28
    • PCT/US2010/053333
    • 2010-10-20
    • QUALCOMM INCORPORATEDBRILLANT, AvigdorPEZO, DavidWEISSMAN, Haim M.
    • BRILLANT, AvigdorPEZO, DavidWEISSMAN, Haim M.
    • H04L27/36H04L27/34
    • H04L27/36
    • Apparatus and methods for QAM modulation are disclosed using dual polar modulation. QAM modulation of a signal is accomplished by translating a QAM signal into two phasors having the same or constant amplitude and then phase shifting one of the phasor by 180 degrees for a differential load. The phasors are then polar modulated such that, when differentially combined in the load through summation or superposition, a QAM modulated symbol results. The use of constant amplitude phasors when power amplified for transmission of QAM modulated signals allows amplifiers to be operated in a saturation mode with greater efficiency than conventional amplifiers used in QAM modulation, which operate in a less efficient linear mode to effect amplitude modulation. Additionally, differential combining of the phasors affords relaxation of the turns of a transformer used in amplifying the phasors.
    • 使用双极化调制公开了用于QAM调制的装置和方法。 信号的QAM调制通过将QAM信号转换成具有相同或恒定幅度的两个相量并且然后将相量中的一个相移相差180度来实现差分负载。 然后,相量被极化调制,使得当通过求和或叠加在负载中差分地组合时,产生QAM调制符号。 当用于QAM调制信号的传输的功率放大时,使用恒定幅度相量允许放大器以比在QAM调制中使用的常规放大器更高的效率在饱和模式下操作,其在低效线性模式下工作以实现幅度调制。 此外,相量的差分组合提供用于放大相量的变压器的匝数的松弛。