Modified start frame delimiter detection

Details Modified start frame delimiter detection Modified start frame delimiter detection

2007-01-09

2007-01-09

Ho, Duc (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S514000

Reexamination Certificate

active

10139653

ABSTRACT:
A modified approach to detecting the start frame delimiter (SFD) is disclosed. A receiving system scans a decoded but not yet de-scrambled received signal for a scrambled version of the SFD associated with the preamble format being used. Using this approach, it is not necessary to use any bits intended for use in synchronization to initialize a de-scrambler so as to be able to de-scramble the SFD portion of the preamble for detection. The bits that otherwise would have been dedicated to initializing the de-scrambler may then be used for synchronization, as intended. Detecting fewer than all bits comprising a start frame delimiter is described. Bits not used for SFD detection may be used for other purposes, such as synchronization.

REFERENCES:
patent: 4410990 (1983-10-01), Wilkinson
patent: 5151920 (1992-09-01), Haagh et al.
patent: 2001/0034729 (2001-10-01), Azadel et al.
patent: 2001/0043603 (2001-11-01), Yu
patent: 2002/0159531 (2002-10-01), Reagan et al.
patent: 2003/0206564 (2003-11-01), Mills et al.
patent: 0 715 440 (1996-06-01), None
patent: 1 185 048 (2002-03-01), None
patent: 1 191 730 (2002-03-01), None
patent: 1 185 048 (2003-06-01), None
IEEE Std 802.11b/D8.0, Sep. 2001.
“Supplement to IEEE Standard for Information Technology. Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher-Speed Physical Layer Extension in the 2.4 GHz Band” IEEE STD 802.11B-1999, xx, xx, Jan. 20, 2000, pp. 1090 XP002189756.

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