| Interference Suppression in Non-coherent Time-Hopping IR-UWB Ranging |
| Date: | September 2006 |
| MERL Contacts: | Zafer Sahinoglu,
Andreas F. Molisch,
Philip Orlik |
| Author: | Z. Sahinojglu, I Guvenc, P. Orlik, A.F. Molisch |
| Where Published: | IEEE International Conference on Ultra-Wideband (ICUWB) |
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 |
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