Frame identifier

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2008-01-29

2008-01-29

Nguyen, Steven (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C370S394000, C370S252000

Reexamination Certificate

active

07324428

ABSTRACT:
Method and system for determining the number of one or more of a sequence of M+1 consecutive OFDM frames from analysis of the designated preambles of two or more consecutive frames (m=0, 1, . . . , M; M≧1). An overlap function OF(m;k) is formed for each frame with a sequence of selected reference signals indexed by k (k=1, 2, . . . , K), dependent upon the frame number m and the index k, and a phase (sequence location corresponding to largest amplitude of overlap function) is determined. An Mth-order phase difference is computed that corresponds to frame number of one of the M+1 frames. A consistency check is provided for the phase numbers.

REFERENCES:
patent: 5444697 (1995-08-01), Leung et al.
patent: 6151295 (2000-11-01), Ma et al.
patent: 6671284 (2003-12-01), Yonge et al.

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