(Updated) preamble for FDMA

Details (Updated) preamble for FDMA (Updated) preamble for FDMA

2007-08-14

2007-08-14

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

11021609

ABSTRACT:
A wireless device (10, 12) is provided that distinguishes between multiple piconets. The wireless device (10, 12) includes a preamble component (160, 162, 164, 166) and a correlator (150) component. The preamble component (160, 162, 164, 166) provides a preamble (120) for a wireless fixed frequency interleaving transmission, and the correlator component (150) distinguishes a wireless transmission based on the preamble (120). A circuit (180) is provided for a wireless receiver to despread a hierarchical sequence (120) made by spreading an M-length sequence (110) with an N-length sequence (112). The circuit (180) includes a first and second despreaders (185, 190). The first despreader (185) is coupled to a signal input to despread a received signal. The signal is a fixed frequency interleaved transmission. The second despreader (190) is coupled to an output of the first despreader (185). The second despreader (190) despreads the output of the first despreader (185) with a second sequence.

REFERENCES:
patent: 6222875 (2001-04-01), Dahlman et al.
patent: 6370130 (2002-04-01), Zhou et al.
patent: 6597676 (2003-07-01), Ariyoshi et al.
patent: 6693890 (2004-02-01), Yick et al.
patent: 2002/0034215 (2002-03-01), Inoue et al.
patent: 2003/0072255 (2003-04-01), Ma et al.
patent: 2003/0077225 (2003-04-01), Ma et al.
patent: 2004/0052306 (2004-03-01), Ibrahim et al.
patent: 2004/0240527 (2004-12-01), Giannakis et al.
patent: 2005/0068932 (2005-03-01), Lakkis
patent: 2005/0180376 (2005-08-01), Chander et al.

Affiliated with

Also associated with

Rating

(Updated) preamble for FDMA does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with (Updated) preamble for FDMA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and (Updated) preamble for FDMA will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3879751