Radio communication system

Details Radio communication system Radio communication system

1996-01-17

1997-07-29

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375207, 375299, 375267, 370209, 455101, H04B 7216, H04B 706

Patent

active

056527640

ABSTRACT:
Transmission data is spread by spreaders through two orthogonal codes generated by orthogonal code generators, the spread signals are subjected to binary phase modulation with a given carrier wave by BPSK modulators, and are then transmitted from separate antennas positioned in differing spatial locations. Thus, it is possible to provide a radio communication system capable of realizing transmission diversity even in the case of initial transmission where there is yet no information regarding the location, direction, etc., of a partner station, or where a base station is to transmit data directed to all of a plurality of mobile stations, such as in mobile communication systems.

REFERENCES:
patent: 4081748 (1978-03-01), Batz
patent: 4490830 (1984-12-01), Kai et al.
patent: 5203018 (1993-04-01), Hirose
patent: 5280631 (1994-01-01), Nakahi et al.
patent: 5289499 (1994-02-01), Weerackody
patent: 5305353 (1994-04-01), Weerackody
patent: 5394435 (1995-02-01), Weerackody
patent: 5457712 (1995-10-01), Weerackody

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