Radio communication system
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United States of America Patent
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-
Jul 29, 1997
Grant Date -
N/A
app pub date -
Jan 17, 1996
filing date -
Jan 17, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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