Title :
Novel Block-Interleaved Multi-code CDMA System for UWB Communications
Author :
Luo, Lin ; Zhang, Jian Andrew ; Shi, Zhenning
Author_Institution :
Nat. ICT Australia, Canberra
Abstract :
In this paper, for the purpose of better performance with lower complexity in UWB communications, we propose a novel Block-Interleaved Multi-code (BIM)-CDMA system with zero/low correlation zone (ZCZ/LCZ) spreading sequences acting as PN codes. Based on ZCZ/LCZ sequences, this system can effectively deal with dense multipath channels by combining the energy of multipath signals and avoiding inter-chip interference (ICI) and intersymbol interference (ISI). Also a new ZCZ sequence is developed for the system to obtain better performance. Simulation results show that the performance of the BIM-CDMA system is considerably improved over that of the direct sequence (DS)-CDMA systems.
Keywords :
block codes; code division multiple access; correlation methods; interleaved codes; intersymbol interference; multipath channels; pseudonoise codes; ultra wideband communication; PN code; UWB communication; block interleaved multicode CDMA System; dense multipath channel; inter-chip intersymbol interference; multipath signal; zero-low correlation zone; Australia; Delay; Interference elimination; Interleaved codes; Intersymbol interference; Multiaccess communication; Multipath channels; Signal processing; Ultra wideband communication; Ultra wideband technology; Block-Interleaved; CDMA; Multi-code; Ultra wideband; ZCZ/LCZ sequences;
Conference_Titel :
Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0521-3
Electronic_ISBN :
978-1-4244-0521-3
DOI :
10.1109/ICUWB.2007.4381024
