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

Zhongshan Zhang; Chintha Tellambura

doi:10.1109/TCOMM.2009.04.070246

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

Zhongshan Zhang^*, Chintha Tellambura

^*Corresponding author for this work

University of Alberta

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

In the uplink of Orthogonal Frequency-Division Multiple Access (OFDMA) systems, the user carrier frequency offsets result in inter-carrier-interference (ICI) and multipleuser- 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 infiniteseries. The series requires at least 50 terms to ensure sufficient accuracy.

Original language	English
Pages (from-to)	1025-1030
Number of pages	6
Journal	IEEE Transactions on Communications
Volume	57
Issue number	4
DOIs	https://doi.org/10.1109/TCOMM.2009.04.070246
Publication status	Published - 2009
Externally published	Yes

Keywords

Bit error rate
Carrier frequency offset
OFDMA

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10.1109/TCOMM.2009.04.070246

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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 multipleuser- 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 infiniteseries. The series requires at least 50 terms to ensure sufficient accuracy.",

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AB - In the uplink of Orthogonal Frequency-Division Multiple Access (OFDMA) systems, the user carrier frequency offsets result in inter-carrier-interference (ICI) and multipleuser- 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 infiniteseries. The series requires at least 50 terms to ensure sufficient accuracy.

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

Abstract

Keywords

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