Title :
Spreading sequence selection scheme for NBI suppression IN DS-UWB systems
Author :
Wang, C. ; Ying, R. ; Wei, Y. ; Yang, Y.
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Interference suppression is important for the ultra-wideband (UWB) systems to operate over spectrum occupied by pre-existing narrowband systems. In this paper, a spreading sequence selection scheme is proposed for code-aided interference suppression in direct-sequence UWB (DS-UWB) systems. Compared with a randomly selected spreading sequence, the presented scheme can ensure the system achieves suboptimal performance. Compared with our recently proposed eigenvector sign (EVS) spreading sequence, an equalizer can be avoided for high speed application by using the selected spreading sequence, which reduces the complexity of system implementation.
Keywords :
eigenvalues and eigenfunctions; interference suppression; ultra wideband technology; DS-UWB systems; NBI suppression; code-aided interference suppression; direct-sequence UWB systems; eigenvector sign spreading sequence; narrowband systems; spreading sequence selection scheme; ultra-wideband systems; Complexity theory; Eigenvalues and eigenfunctions; Interference suppression; Narrowband; Signal to noise ratio; Ultra wideband technology; Ultra-wideband (UWB); narrowband interference (NBI) suppression;
Conference_Titel :
Ultrawideband and Ultrashort Impulse Signals (UWBUSIS), 2010 5th International Conference on
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-7470-7
Electronic_ISBN :
978-1-4244-7469-1
DOI :
10.1109/UWBUSIS.2010.5609145
