The effect of imperfect carrier frequency offset estimation on an OFDMA uplink

Authors:
Zhongshan Zhang;Chintha Tellambura
Affiliations:
Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada;Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada
Venue:
IEEE Transactions on Communications
Year:
2009

Citing 4
Cited 3

Fundamentals of wireless communication

Fundamentals of wireless communication
Computationally efficient bandwidth allocation and power control for OFDMA

IEEE Transactions on Wireless Communications
High accuracy frequency offset correction with adjustable acquisition range in OFDM systems

IEEE Transactions on Wireless Communications
BER of OFDM systems impaired by carrier frequency offset in multipath fading channels

IEEE Transactions on Wireless Communications

OFDMA uplink frequency offset estimation via cooperative relaying

IEEE Transactions on Wireless Communications
ICI analysis for FRFT-OFDM systems to frequency offset in time-frequency selective fading channels

IEEE Communications Letters
Bit error rate approximation of MIMO-OFDM systems with carrier frequency offset and channel estimation errors

EURASIP Journal on Wireless Communications and Networking

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Abstract

In the uplink of Orthogonal Frequency-Division Multiple Access (OFDMA) systems, the user carrier frequency offsets result in inter-carrier-interference (ICI) and multiple-user-interference (MUI), leading to a degradation of the bit error rate (BER). This paper treats this uplink scenario and derives the average uplink capacity and the BER using the signal-to-interference-and-noise ratio (SINR) analysis. Adaptive power allocation is suggested to increase the capacity. When the frequency offsets are modeled as zero-mean Gaussian or Uniform random variables, the BER is derived as a closed-form infinite-series. The series requires at least 50 terms to ensure sufficient accuracy.