公开(公告)号：US6130897A

公开(公告)日：2000-10-10

申请号：US925574

申请日：1997-09-08

申请人： Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Yoichi Morinaga ,  Makoto Aisaka

发明人： Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Yoichi Morinaga ,  Makoto Aisaka

IPC分类号： H04B1/40 ,  H04B1/50 ,  H04B1/54 ,  H04B1/56 ,  H04J3/00 ,  H04J4/00 ,  H04L5/16

CPC分类号： H04B1/006 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/406 ,  H04B1/408 ,  H04B1/54 ,  H04B1/50 ,  H04B1/56

摘要： A Time Division Multiple Access FDD/TDD dual mode system includes a switch having first and second common terminals and first and second terminals. Also included are a TDD demodulation circuit for demodulating a TDD received signal from the first common terminal; a FDD demodulation circuit for demodulating a FDD received signal; and a FDD/TDD modulation circuit for modulating and impressing the modulated signal onto the second common terminal. A FDD transmission band selection circuit is connected to the first terminal, and a TDD transmission-reception band selection circuit is connected to the second terminal. The first common terminal of the switch is connected to the second terminal during TDD reception, whereas the second common terminal is connected to the first terminal during FDD transmission and to the second terminal during TDD transmission.

摘要翻译： 时分多址FDD / TDD双模式系统包括具有第一和第二公共终端以及第一和第二终端的交换机。 还包括用于解调来自第一公共终端的TDD接收信号的TDD解调电路; 用于解调FDD接收信号的FDD解调电路; 以及FDD / TDD调制电路，用于将调制信号调制和压入第二公共终端。 FDD传输频带选择电路连接到第一终端，并且TDD发送接收频带选择电路连接到第二终端。 在TDD接收期间，交换机的第一公共终端连接到第二终端，而在FDD传输期间第二公共终端连接到第一终端，在TDD传输期间连接到第二终端。