Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1994-01-11
1997-04-08
Hsu, Alpus H.
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
375296, 455 501, 455 63, 370335, 370337, H04J 316, H04B 110, H04B 1500
Patent
active
056195036
ABSTRACT:
The invention relates to a radio communication system and method for minimizing co-channel interference. The system and method employ a matrix processor to separate signals received from, or transmitted to, a plurality of mobile units. The coefficients of the matrix are chosen to minimize interference between channels, and are adjusted periodically to account for changes in the mobile units using the system. The system and methods are applicable to, for example, landmobile communication, satellite communications system and hybrids thereof. In one embodiment, the system rotates the allocation of Digital Voice Color Codes and sector radiation patterns in opposite directions to maintain the same color code in the same absolute direction.
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Ericsson Inc.
Hsu Alpus H.
Ngo Ricky Q.
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