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ICASSP
2011
IEEE
12 years 8 months ago
Joint estimation of channel and carrier frequency offset from the emitter, in an uplink OFDMA system
In this paper, we propose a joint estimation method of carrier frequency offsets (CFO) and channel impulse responses (CIR) for an uplink OFDMA system. We consider the CFOs come in...
Babar Aziz, Inbar Fijalkow, Myriam Ariaudo
GLOBECOM
2010
IEEE
13 years 2 months ago
Carrier Frequency Offset Estimation for Uplink OFDMA Using Partial FFT Demodulation
Fast and accurate Carrier Frequency Offset (CFO) estimation is a problem of significance in many multi-carrier modulation based systems, especially in uplink Orthogonal Frequency D...
Srinivas Yerramalli, Milica Stojanovic, Urbashi Mi...
GLOBECOM
2006
IEEE
13 years 11 months ago
Two Novel Iterative Joint Frequency-Offset and Channel Estimation Methods for OFDMA Uplink
—We address joint estimation of frequency offsets and channel responses in OFDMA uplink. A cyclically equal-spaced, equal-energy interleaved pilot preamble is proposed by which t...
Xiaoyu Fu, Hlaing Minn, Cyrus D. Cantrell
ICASSP
2011
IEEE
12 years 8 months ago
Robust frequency synchronization for an OFDMA uplink system disturbed by a Cognitive Radio system interference
In Cognitive Radio (CR) systems, spectrum sensing plays a key role to determine the free frequency bands. However, when the primaryuser (PU) signal spectrum exhibits localized fad...
Hector Poveda, Guillaume Ferre, Eric Grivel
ICC
2007
IEEE
157views Communications» more  ICC 2007»
13 years 11 months ago
Uplink Adaptive Resource Allocation Mitigating Inter-Cell Interference Fluctuation for Future Cellular Systems
—This paper aims to address the problem of inter-cell interference fluctuation, which is inherent on the uplink direction of future cellular systems employing OFDMA or single car...
Minghai Feng, Lan Chen, Xiaoming She