Spread spectrum communication apparatus

Details Spread spectrum communication apparatus Spread spectrum communication apparatus

1996-04-12

1998-04-07

Chin, Wellington

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370507, 370516, 375206, 375209, 375356, 375362, H04J 306, H04J 1300

Patent

active

057373299

ABSTRACT:
A spread spectrum communication apparatus for transmitting multiple signals such that signals transmitted from several transmitter-receivers can have the same PN code and yet not interfere with each other. A phase controller is used to control the phases of the PN codes from multiple transmitters so that the PN code phase is different for each transmitter. Thus, even though the same PN codes are transmitted, they all have different phases to prevent interference. This arrangement reduces the number of PN codes needed since only one PN code generator is needed for several receiver blocks.

REFERENCES:
patent: 5285472 (1994-02-01), Leonard et al.
patent: 5375141 (1994-12-01), Takahashi
patent: 5414729 (1995-05-01), Fenton
patent: 5467367 (1995-11-01), Izumi et al.
patent: 5581547 (1996-12-01), Umeda

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