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The Impact of Chip Duty Factor on DS-UWB System Over Multipath Environment in the Presence of Narrowband Interference

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3 Author(s)
Sum, C.S. ; Dept. of Electr. & Electron. Eng., Niigata Univ. ; Sasaki, S. ; Kikuchi, H.

In this paper, we investigate the impact of chip duty factor (DF) on direct sequence (DS) ultra wideband (UWB) system with Rake receiver over multipath and multiuser environment in the presence of narrowband interference. By employing DS-UWB signals with varying DF, the system performance corresponding to different parameters such as data rate, signal to interference ratio (SIR), signal to noise ratio (SNR) and number of interfering users are investigated. We found that by using signals with lower DF, system performance can be improved without compromising processing gain and data rate. Additionally, interference mitigation of low DF signal is more effective in high SIR environment. We also discovered an optimum data rate where the relative best system performance can be obtained

Published in:

Ultra-Wideband, The 2006 IEEE 2006 International Conference on

Date of Conference:

Sept. 2006