Apparatus for production of scrambling codes and preambles

Details Apparatus for production of scrambling codes and preambles Apparatus for production of scrambling codes and preambles

2004-12-16

2009-02-10

Lugo, David B (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S140000

Reexamination Certificate

active

07489722

ABSTRACT:
The present invention is directed to an apparatus for production of scrambling codes that are used for scrambling binary signals transmitted via physical channels in a mobile radio system. The apparatus is also configured to produce preambles that are sent on a physical channel in order to control the access to that particular physical channel. The apparatus includes a scrambling code generator for production of the scrambling codes, and a preamble generator for production of non-scrambled preambles, and at least one multiplier for scrambling the non-scrambled preambles using associated scrambling codes.

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3GPP TS 25.213 (Universal Mobile Telecommunications System), version 5.4.0 (Sep. 2003) “3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Spreading and modulation (FDD)”, 28 pgs.
3GPP TS 25.211 (Universal Mobile Telecommunications System), version 5.5.0 (Apr. 2001), 3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Physical channels and mapping of transport channels onto physical channels (FDD), 51 pgs.

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