Multiuser detections for TH-UWB systems with M-ary PPM

  • Authors:

  • Szu-Lin Su;Wen-Jun Lin;Yi-Ching Pan;Yung-Chuan Lin

  • Affiliations:

  • Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan City, Taiwan, R.O.C.;Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan City, Taiwan, R.O.C.;Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan City, Taiwan, R.O.C.;Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan City, Taiwan, R.O.C.

  • Venue:
  • ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper investigates multiuser detection technology for time hopping (TH) ultra-wideband (UWB) systems to cancel the multiple access interference (MAI) from desired signal. To reduce MAI, three interference cancellation schemes are employed: successive interference cancellation (SIC), successive interference cancellation with the maximum ratio (SIC-MR) and iterative interference cancellation with ratio threshold test (IIC-RTT). The performances of these interference cancellation schemes are compared in terms of the symbol error rate (SER) for the M-ary PPM TH-UWB systems over AWGN channel and multipath fading channel. Simulation results show that the proposed SIC-MR scheme is better than the SIC scheme. In addition, the number of stages and processing complexity are compared among three interference cancellation schemes. The IIC-RTT scheme can achieve very low complexity with acceptable performance degradation compared with the SIC scheme.