US Patent 7881398 FFT numerology for an OFDM transmission system
Patent 7881398 was granted and assigned to Agere Systems on February, 2011 by the United States Patent and Trademark Office.
All edits
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.
US Patent 07881398 FFT numerology for an OFDM transmission system US Patent 7881398 FFT numerology for an OFDM transmission system
US Patent 07881398 FFT numerology for an OFDM transmission system
Find more entities like US Patent 7881398 FFT numerology for an OFDM transmission system
