Title :
The Impact of Chip Duty Factor on DS-UWB System Over Multipath Environment in the Presence of Narrowband Interference
Author :
Sum, Chin Sean ; Sasaki, Shigenobu ; Kikuchi, Hisakazu
Author_Institution :
Dept. of Electr. & Electron. Eng., Niigata Univ.
Abstract :
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
Keywords :
interference suppression; multipath channels; multiuser channels; radio receivers; ultra wideband communication; DS-UWB; Rake receiver; chip duty factor; direct sequence ultra wideband system; interference mitigation; multipath environment; multiuser environment; narrowband interference; Bandwidth; Binary phase shift keying; Degradation; Fading; Interference; Multipath channels; Narrowband; Signal to noise ratio; System performance; Ultra wideband technology; DS-UWB; Rake receiver; chip duty factor; interference mitigation; multi-user; multipath;
Conference_Titel :
Ultra-Wideband, The 2006 IEEE 2006 International Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
1-4244-0101-1
Electronic_ISBN :
1-4244-0102-X
DOI :
10.1109/ICU.2006.281587
