Blind image suppression and carrier tracking in direct conversion receivers based on I/Q signal separation

  title={Blind image suppression and carrier tracking in direct conversion receivers based on I/Q signal separation},
  author={Mikko Valkama and Markku Renfors and Visa Koivunen},
  journal={Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004.},
  pages={603-606 Vol.1}
The current trend in receiver architecture design is to simplify the RF front-end to get better integrability. One good example is the so-called direct-conversion receiver in which the desired RF channel is I/Q downconverted directly to baseband. In this paper, the I/Q mismatch problem in direct-conversion receivers is considered in detail, together with the more traditional carrier tracking task. It is shown that the fundamental effect of both the I/Q mismatch as well as carrier offsets is to… CONTINUE READING

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