Apparatus and method for spreading/de-spreading data using...

Details Apparatus and method for spreading/de-spreading data using... Apparatus and method for spreading/de-spreading data using...

2011-04-12

2011-04-12

Ghayour, Mohammad H (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S130000, C375S135000, C375S141000, C375S295000, C375S296000, C375S299000, C375S306000, C375S307000, C375S309000, C375S310000, C455S069000

Reexamination Certificate

active

07924907

ABSTRACT:
there is provided a spreading apparatus using a child orthogonal variable spreading factor (OVSF) code pair, including: a channel condition information receiving unit for receiving channel condition information including a channel condition metric; a switch controlling unit for receiving the channel condition information from the channel condition information receiving unit and transferring data stream according to the received channel station information; a first spreading unit for receiving the data stream from the switching controlling unit, and spreading the data stream using a single OVSF code; and a second spreading unit for receiving the data stream from the switching controlling unit, and spreading the data stream using a child OVSF code pair.

REFERENCES:
patent: 6198734 (2001-03-01), Edwards et al.
patent: 6233231 (2001-05-01), Felix et al.
patent: 7167502 (2007-01-01), Tsaur
patent: 7280581 (2007-10-01), Khan
patent: 7372912 (2008-05-01), Seo et al.
patent: 7542514 (2009-06-01), Song et al.
patent: 2005/0099992 (2005-05-01), Sato
patent: 2001-0082745 (2001-08-01), None
patent: 2005-0095902 (2005-10-01), None

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