Time division multiple access FDD/TDD dual mode radio and a time

Details Time division multiple access FDD/TDD dual mode radio and a time Time division multiple access FDD/TDD dual mode radio and a time

1997-09-08

2000-10-10

Kizou, Hassan

Multiplex communications

Communication techniques for information carried in plural...

Combined time division and frequency division

370280, 370281, 370276, H04J 400, H04J 300, H04L 516

Patent

active

061308978

ABSTRACT:
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.

REFERENCES:
patent: 5475677 (1995-12-01), Arnold et al.
patent: 5519691 (1996-05-01), Darcie et al.
patent: 5648985 (1997-07-01), Bjerede et al.
patent: 5657344 (1997-08-01), Na
patent: 5812522 (1998-09-01), Lee et al.
patent: 5926466 (1999-07-01), Ishida et al.

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