Pulse or digital communications – Receivers
Reexamination Certificate
2011-08-02
2011-08-02
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Receivers
C370S310000
Reexamination Certificate
active
07991079
ABSTRACT:
An exemplary fast Fourier transform (FFT) numerology for an orthogonal frequency division multiple access (OFDMA) downlink transmission system is described. The exemplary FFT numerology reduces the FFT sampling rate for a given transmission bandwidth, thereby increasing the battery life of a UE. The FFT numerology increases robustness against Doppler spread, phase noise, and frequency offset, enabling operation in channels with high delay spread, such as occurs in mountainous regions. The described numerology might provide the following without altering standard sub-frame duration: increased intercarrier spacing; reduced FFT sampling frequency across the transmission bandwidths; reduced FFT size across all transmission bandwidths; increased number of OFDM symbols per sub-frame; and/or increased cyclic prefix length choices.
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Ex parte Quayle dated Aug. 24, 2010 in U.S. Appl. No. 11/838,989.
Ex parte Quayle dated Jun. 23, 2010 in U.S. Appl. No. 11/838,989.
Agere Systems Inc.
Corrielus Jean B
Mendelsohn Steve
Mendelsohn, Drucker & Associates P.C.
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