Pulse or digital communications – Receivers – Automatic frequency control
Reexamination Certificate
2008-04-29
2008-04-29
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Receivers
Automatic frequency control
C375S131000, C375S132000, C375S260000, C375S371000, C375S147000, C455S012100
Reexamination Certificate
active
07366262
ABSTRACT:
A frequency estimation method of multiband (MB)-orthogonal frequency division multiplexing (OFDM) ultra wide band (UWB) system using an Alt-PHY time frequency (TF) hopping strategy based on IEEE 802. 15. 3a. includes the steps of: a) selecting a predetermined number of frequencies among a plurality of center frequencies based on a predetermined number of OFDM symbols and estimating relative frequency offsets for selected frequencies; b) obtaining an average relative frequency offset by averaging the estimated relative frequency offsets when two or more frequencies are selected at the step a); and c) obtaining real frequency offsets for each of the center frequencies by transforming the obtained average relative frequency offset to the real frequency offsets and compensating a frequency offset caused by a transmitting/receiving local oscillators based on the obtained real frequency offsets.
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Choi Sang sung
Park Kwang Roh
Shin Cheol HO
Electronics and Telecommunications Research Institute
Ghayour Mohammed
King Sonia J
Lowe Hauptman & Ham & Berner, LLP
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