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Performance analysis of an over-sampling multi-channel equalization for a multi-band uwb system

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4 Author(s)
Sai Ho Wong ; Inst. for Infocomm Res. ; Xiaoming Peng ; F. Chin ; A. Madhukumar

This paper proposes an over-sampling multi-channel equalizer per sub-band for multi-band ultra-wideband (UWB) system and compares its performance with conventional RAKE receiver when operating in practical UWB channel models. Three transmission modes have been considered, and inter-symbol interference (ISI) is found to be inherent to certain transmission modes due to the large UWB channel delay spreads. Through detailed analytical and simulation studies, the proposed over-sampled minimum mean square error (MMSE) equalizer is shown to be able to handle ISI under any channel conditions or transmission modes, with an acceptable BER. In addition, the rich multipath diversity of the UWB channels is harnessed by the over-sampling scheme, for output SNR improvement. Over-sampling is done in the expense of an increase in system complexity

Published in:

IEEE Transactions on Wireless Communications  (Volume:5 ,  Issue: 7 )