Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1997-01-02
1999-09-14
Zimmerman, Brian
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
370342, 455562, 4552771, H04Q 100
Patent
active
059533250
ABSTRACT:
A DS-CDMA cellular system is provided that employs two forward link transmission modes in parallel. A conventional transmission mode broadcasts a pilot channel that can be used by a conventional mobile station to estimate and detect a dedicated traffic channel. The second transmission mode transmits (via a sectorized or narrow lobe antenna system) all information required by a new generation mobile station to estimate and detect a traffic channel dedicated to that mobile station. Consequently, DS-CDMA system operators can introduce the use of adaptive array antenna systems or distributed antenna systems with new generation mobile stations, without terminating the use of the conventional mobile stations.
REFERENCES:
patent: 4128740 (1978-12-01), Graziano
patent: 4144496 (1979-03-01), Cunningham et al.
patent: 4506385 (1985-03-01), Fedde et al.
patent: 4947452 (1990-08-01), Hattori et al.
patent: 5103460 (1992-04-01), Stewart
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5315616 (1994-05-01), DeLisle et al.
patent: 5345599 (1994-09-01), Paulraj et al.
patent: 5349606 (1994-09-01), Lovell et al.
patent: 5365543 (1994-11-01), Takahashi et al.
patent: 5371760 (1994-12-01), Allen et al.
patent: 5377225 (1994-12-01), Davis
patent: 5381443 (1995-01-01), Borth et al.
patent: 5394435 (1995-02-01), Weerackody
patent: 5396645 (1995-03-01), Huff
patent: 5437055 (1995-07-01), Wheatley, III
patent: 5509014 (1996-04-01), Utting
patent: 5551060 (1996-08-01), Fujii et al.
patent: 5581260 (1996-12-01), Newman
patent: 5596333 (1997-01-01), Bruckert
patent: 5684491 (1997-11-01), Newman et al.
patent: 5691729 (1997-11-01), Gutman et al.
patent: 5790537 (1998-08-01), Yoon et al.
patent: 5799004 (1998-08-01), Keskitalo
Alfred Baier, et al., "Design Study for a CDMA-Based Third Generation Mobile Radio System," IEEE Journal on Selected Areas in Communications, vol. 12, No. 4, pp. 733-743 (May 1994).
Telefonaktiebolaget L M Ericsson (publ)
Zimmerman Brian
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