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Design of new training sequence and estimation scheme for frequency dependent I/Q imbalance in MB-OFDM based UWB systems

Publiceringsår: 2009
Språk: Engelska
Sidor: 509-512
Dokumenttyp: Konferensbidrag


This paper analyzes the I/Q imbalance effect of direct-conversion receiver in wide-band wireless communication system and sets up frequency-selective I/Q imbalance model for ultra-wide band system. We design a new training sequence based on extra phase rotation and propose an estimation algorithm using diversity message introduced by I/Q imbalance during the demodulation process. Theoretical analysis and simulation results based on typical MB-OFDM based UWB system confirm that the estimation scheme proposed in this paper can achieve 5 dB EbNo advantage at PER=8%.



  • Technology and Engineering


IEEE 8th International Conference on ASIC (ASICON '09)
Changsha, Hunan
  • ISBN: 978-1-4244-3868-6

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