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    • 23. 发明申请
    • Radio signal broadcast system and method
    • 无线电信号广播系统和方法
    • US20070004422A1
    • 2007-01-04
    • US11517074
    • 2006-09-07
    • Farzad TalaieJohn HimesAnthony NoerpelJohn RotondoRichard Johnson
    • Farzad TalaieJohn HimesAnthony NoerpelJohn RotondoRichard Johnson
    • H04Q7/20
    • H04B7/18523H04B7/18539H04B7/18543H04B7/2041H04L63/08H04W4/06H04W4/10H04W12/06H04W72/005H04W76/45
    • A first transmitting device is used to transmit a first signal on a first carrier frequency to a relay device. The relay device receives the signal by demodulating the first carrier frequency. Subsequently, the relay device retransmits the signal by modulating a second and/or a third carrier frequency. The signal is then recovered at one or more receiving devices by demodulating the second and/or third carrier frequencies. Further, a second transmitting device transmits a second signal on a fourth carrier frequency and the relay device retransmits the signal by modulating a fifth and/or a sixth carrier frequency. The signal is then recovered at one or more receiving devices by demodulating the fifth and/or sixth carrier frequencies. The transmitting and/or receiving devices are preferably voice terminals, such as a wireless telephones or data terminals, such as portable computers. The transmitting and/or receiving devices are optionally coupled to a communications network, such as a public switched telephone network or the Internet. The relay device is preferably a multiple beam satellite and/or a ground station covering several distinct geographical regions.
    • 第一发送装置用于将第一载波频率上的第一信号发送到中继装置。 中继装置通过解调第一载波频率接收信号。 随后,中继设备通过调制第二载波频率和/或第三载波频率来重发该信号。 然后通过解调第二和/或第三载波频率在一个或多个接收设备处恢复该信号。 此外,第二发送装置在第四载波频率上发送第二信号,并且中继装置通过调制第五载波频率和/或第六载波频率来重发信号。 然后通过解调第五和/或第六载波频率在一个或多个接收装置处恢复该信号。 发送和/或接收设备优选地是诸如便携式计算机之类的无线电话或数据终端的语音终端。 发送和/或接收设备可选地耦合到诸如公共交换电话网络或因特网之类的通信网络。 中继装置优选地是覆盖几个不同地理区域的多波束卫星和/或地面站。