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Performance analysis of time-hopping ultra-wideband systems in multipath fading channels (uncoded and coded schemes)

Ahmadi, H. R ; Sharif University of Technology | 2002

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  1. Type of Document: Article
  2. DOI: 10.1109/PIMRC.2002.1045468
  3. Publisher: 2002
  4. Abstract:
  5. In this paper, we evaluate the performance of both uncoded and coded multiple access TH-UWB systems introduced in [1-3], in multipath Rayleigh fading channels. The receiver is a selective diversity combining receiver, known as SRake. Based on Gaussian distribution assumption for the multiple access interference at the output of SRake receiver and by using virtual branch technique as introduced in [4-5], the hit error rates for uncoded and coded schemes are derived. Our analysis shows that the effective order of diversity achieved by the coded scheme is the product of the number of branches of SRake receiver and the Hamming distance of the code applied. Furthermore, it indicates that the coded scheme significantly outperforms the uncoded scheme. ©2002 IEEE
  6. Keywords:
  7. Fading channel ; Selection combining ; Super-orthogonal codes ; UWB ; Virtnal branch technique
  8. Source: 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002, Lisboa, 15 September 2002 through 18 September 2002 ; Volume 4 , 2002 , Pages 1694-1698 ; 0780375890 (ISBN); 9780780375895 (ISBN)
  9. URL: http://scientiairanica.sharif.edu/article_2564.html