Method for achieving a large capacity of SCDMA spread...

Details Method for achieving a large capacity of SCDMA spread... Method for achieving a large capacity of SCDMA spread...

2005-12-27

2005-12-27

Vo, Don N. (Department: 2631)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

06980582

ABSTRACT:
The invention is an implementing method for one kind of large capacity spread-spectrum communication systems. The method is used for increasing system capacity and raising spectral efficiency of a synchronous code division multiple access spread-spectrum communication system. The method sets a transmitting antenna or receiving antenna of the transmitting end or receiving end to a smart antenna solely, or sets them to smart antennas simultaneously. The method uses a large spreading codes set with the codes number is greater than the code length for spreading unit in the transmitting end. The method also uses a large spreading codes set with the codes number is greater than the code length for demodulation processing unit in the receiving end, and uses joint detection and interference suppression techniques for this demodulation processing unit.

REFERENCES:
patent: 5588020 (1996-12-01), Schilling
patent: 6556634 (2003-04-01), Dent
patent: 2002/0172180 (2002-11-01), Hall et al.
patent: 2004/0214604 (2004-10-01), Yoon et al
patent: 1205584 (1999-01-01), None

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