TR2006-120

Interference Suppression in Non-coherent Time-Hopping IR-UWB Ranging


    •  Z. Sahinojglu, I Guvenc, P. Orlik, A.F. Molisch, "Interference Suppression in Non-coherent Time-Hopping IR-UWB Ranging", Tech. Rep. TR2006-120, Mitsubishi Electric Research Laboratories, Cambridge, MA, September 2006.
      BibTeX TR2006-120 PDF
      • @techreport{MERL_TR2006-120,
      • author = {Z. Sahinojglu, I Guvenc, P. Orlik, A.F. Molisch},
      • title = {Interference Suppression in Non-coherent Time-Hopping IR-UWB Ranging},
      • institution = {MERL - Mitsubishi Electric Research Laboratories},
      • address = {Cambridge, MA 02139},
      • number = {TR2006-120},
      • month = sep,
      • year = 2006,
      • url = {https://www.merl.com/publications/TR2006-120/}
      • }
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  • Research Area:

    Communications

Abstract:

Ranging requires detection of the first arriving signal component. The accuracy of time-of-arrival-based range estimation is greatly degraded in the presence of multi-user interference (MUI). We develop a method that applies a nonlinear filter on received signal energy to suppress multiuser interference. Then, leading signal path is tracked via an iterative search back algorithm. The method is tested on time-hopping impulse radio ultrawideband systems. Simulations conducted over IEEE 802.15.4a residential line of sight ultrawideband multipath channels indicate that range detection accuracy is significantly improved by the proposed non-linear filtering approach