Joint estimation scheme of front-end imperfection in MB-OFDM systems
Författare
Summary, in English
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.
Publiceringsår
2010
Språk
Engelska
Sidor
2135-2138
Publikation/Tidskrift/Serie
[Host publication title missing]
Dokumenttyp
Konferensbidrag
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
IEEE International Symposium on Circuits and Systems (ISCAS), 2010
Conference date
2010-05-30 - 2010-06-02
Conference place
Paris, France
Status
Published
ISBN/ISSN/Övrigt
- ISBN: 978-1-4244-5308-5