OFDM AF Relaying Under I/Q Imbalance: Performance Analysis and Baseband Compensation

@article{Mokhtar2013OFDMAR,
  title={OFDM AF Relaying Under I/Q Imbalance: Performance Analysis and Baseband Compensation},
  author={Mohamed Mokhtar and Ahmad Gomaa and Naofal Al-Dhahir},
  journal={IEEE Transactions on Communications},
  year={2013},
  volume={61},
  pages={1304-1313}
}
We analyze the outage performance of half-duplex amplify-and-forward relaying in an OFDM system with MRC detection in the presence of I/Q imbalance and compare it with that of the direct transmission mode. Both analytical and numerical results demonstrate that the direct mode can outperform the amplify-and-forward mode even under moderate levels of uncompensated I/Q imbalance. The cross-over I/Q imbalance levels are determined analytically to be inversely proportional to the cube of the signal… CONTINUE READING
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