Pulse waveform dependent BER analysis of a DS-CDMA UWB radio under multiple access and multipath interferences

Hsiao Hwa Chen, Mohsen Guizani, Cheng Hsiun Tsai, Yang Xiao, Romano Fantacci, Hamid R. Sharif

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This paper proposes an approach to analyze pulse waveform dependent bit error rate (BER) performance of a DS-CDMA ultra wideband (UWB) radio, which operates in a frequency selective fading channel. The analysis takes into account almost all real operational conditions, such as asynchronous transmissions, RAKE receiver, multiple access interference (MAI), multipath interference (MI), log-normal shadowing, and noise. The main objective of the paper is to reveal the relationship between time domain characteristics of pulse waveforms and BER of a UWB radio. It will be shown through analysis (also validated by simulation) that the normalized mean squared auto-correlation function (ACF) of the pulse waveforms can be used as an effective merit figure to judge the suitability for their applications in a DS-CDMA UWB radio. In fact, the normalized mean squared auto-correlation function (ACF) governs the average inter-chip interference caused by imperfect auto-correlation function of the pulse waveforms. The paper concludes that, as long as the power spectral density (PSD) functions of the pulse waveforms fit the FCC spectral mask, the pulse waveforms' normalized mean squared ACF should be minimized to ensure an acceptable BER.

Original languageEnglish
Pages (from-to)2338-2346
Number of pages9
JournalIEEE Transactions on Wireless Communications
Volume6
Issue number6
DOIs
Publication statusPublished - 2007 Jun

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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