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Performance analysis of equalization and interference cancellation by adaptive digital filter for UWB-IR system inside a vehicle

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3 Author(s)
Inami, A. ; Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Yokohama, Japan ; Sugimoto, C. ; Kohno, R.

In this paper, ultra-wideband impulse radio(UWB-IR)system inside a vehicle is considered to construct internal vehicle wireless sensor network with better performance. In a vehicle, a direct path is likely to be blocked by the seat and passengers. The channel model characteristic in a vehicle is different from other wireless systems. When using UWB systems, other wireless systems in the same frequency band cannot be neglected. We propose equalization and interference cancellation using adaptive digital filters in order to remove the influence of the channel inside a vehicle and the narrowband interference. The cannel model and system model were constructed. The performance was analyzed by computer simulation. The simulation results showed that the performance could be improved by the proposed system. Moreover, the number of taps of ADF could be reduced from 10500 to 10000 by using band-pass filter(BPF). Therefore, the processing time could be decreased.

Published in:

Information Theory and its Applications (ISITA), 2010 International Symposium on

Date of Conference:

17-20 Oct. 2010