The accurate performance evaluation of time hopping UWB systems with pulse based polarity

  • Authors:

  • Jang-Woo Park;Kyung-Ryoung Cho;Nam-Hong Jo;Sung-Eon Cho

  • Affiliations:

  • Dept. of Inform. & Comm. Eng., Sunchon National University, Sunchon-shi, Chonnam, Korea;Dept. of Inform. & Comm. Eng., Sunchon National University, Sunchon-shi, Chonnam, Korea;Zenocom. co. LPD;Dept. of Inform. & Comm. Eng., Sunchon National University, Sunchon-shi, Chonnam, Korea

  • Venue:
  • ICHIT'06 Proceedings of the 1st international conference on Advances in hybrid information technology
  • Year:
  • 2006

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Abstract

The bit rate performance of the time hopping impulse radio UWB system with the pulse based polarity is analyzed. It is well known that the pulse polarity helps reduce the spectral spike appearing in the conventional impulse radio system. This paper provides the method for accurately modeling the multiple access interference(MAI) in the system with the pulse polarity. The characteristic function is used to consider the MAI. We also show the MAI can be simplified as Gaussian random variable when the number of pulses representing an information symbol or the pulse rate becomes large. It is obtained directly from approximating the Characteristic Function of the MAI in case of the large number of pulses. Some results have been shown to prove validity for our method. The results also show with the total processing gain fixed, increasing the pulse rates proves the system performance. But the system without the pulse polarity does not.