Method and apparatus in a messaging system for limiting an inter

Details Method and apparatus in a messaging system for limiting an inter Method and apparatus in a messaging system for limiting an inter

1997-10-28

2000-03-28

Hunter, Daniel S.

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455504, 455 60, 455 671, H04B 7005

Patent

active

06044276&

ABSTRACT:
In a messaging system having a plurality of simulcasting base transmitters (104), a plurality of pseudorandom sequence generators (216) are provided (402) for the plurality of base transmitters. The plurality of pseudorandom sequence generators are arranged (403) to ensure that they generate a plurality of pseudorandom sequences having sub-sequences that are different from one another during concurrent transmissions by the plurality of base transmitters. A cancellation-affecting parameter of the plurality of base transmitters is adjusted (404, 406, 408) in accordance with the plurality of pseudorandom sequences during the simulcast transmission from the plurality of base transmitters to limit intervals of carrier cancellation.

REFERENCES:
patent: 4570265 (1986-02-01), Thro
patent: 5218717 (1993-06-01), Reitberger
patent: 5381447 (1995-01-01), Ayerst et al.
patent: 5710546 (1998-01-01), Leitch

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