Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2011-03-22
2011-03-22
Rao, Seema S (Department: 2462)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S350000, C455S436000
Reexamination Certificate
active
07911935
ABSTRACT:
A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted including a plurality of sequence elements interleaved in time and frequency (610, 640). The synchronization channel signal sequence elements enable an initial acquisition and cell search method with low computational load by providing predetermined time domain symmetry (702, 704) for common sequence elements in OFDMA symbol periods (620, 660) for OFDMA symbol timing detection and frequency error detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.
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Akita Hidenori
Baum Kevin L.
Classon Brian K.
Fukuta Masaya
Hayashi Hiroshi
Huynh Khoa
Ingrassia Fisher & Lorenz P.C.
Motorola Mobility, Inc.
Rao Seema S
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