Title :
Time-hopping code characterization for multiuser interference mitigation in ultra wide band impulse radio
Author :
Deleuze, Anne-Laure ; Le Martret, Christophe J. ; Cibla, Philippe
Author_Institution :
THALES Land & Joint Syst., Colombes, France
Abstract :
We consider an ultra wide band impulse radio multiple access scheme based on time-hopping code under a realistic multipath channel model. As a novelty, we provide a closed-form expression for the variance of the multiuser interference at the output of the rake receiver of the user of interest. That enables us to characterize the optimal time-hopping codes minimizing the multiuser interference variance. Finally we observe through simulations that minimizing the multiuser interference variance translates into better performance by significantly decreasing the error probability.
Keywords :
error statistics; multi-access systems; multipath channels; multiuser channels; radio receivers; radiofrequency interference; ultra wideband communication; closed-form expression; error probability; multipath channel; multiple access scheme; multiuser interference variance; rake receiver; time-hopping code; ultrawide band impulse radio; Bit error rate; Closed-form solution; Error probability; Fading; Interference cancellation; Multipath channels; System performance; Ultra wideband communication; Ultra wideband technology; Wireless communication;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399208