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Joint estimation scheme of front-end imperfection in MB-OFDM systems

Publiceringsår: 2010
Språk: Engelska
Sidor: 2135-2138
Dokumenttyp: Konferensbidrag
Ytterligare information: Best Student Paper Award


In this paper, we investigate the analog front-end imperfection in multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) systems and propose a joint estimation and compensation scheme. The estimation of CFO and SFO is presented on frequency domain, which is robust to frequency dependent I/Q imbalance. After that, I/Q imbalance and channel response is jointly estimated with partial compensation to CFO and SFO. Finally, pilot sub-carriers within OFDM symbols are used to track the residual phase distortion. Simulation results show that the proposed joint estimation and compensation scheme achieves 0.3dB SNR advantage in practical MB-OFDM UWB systems comparing to traditional joint estimation algorithm.



  • Electrical Engineering, Electronic Engineering, Information Engineering


IEEE International Symposium on Circuits and Systems (ISCAS)
Paris, France
  • ISBN: 978-1-4244-5308-5

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