Abstract
We consider an ultra wide band impulse radio multiple access scheme based on time-hopping code under a realistic multipath channel model. As a novelty, we provide a closed-form expression for the variance of the multi-user interference at the output of the rake receiver of the user of interest. That enables us to characterize the optimal time-hopping codes minimizing the multi-user interference variance. Finally we observe through simulations that minimizing the multi-user interference variance translates into better performance by significantly decreasing the error probability.
| Original language | English |
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| Pages (from-to) | 617-621 |
| Number of pages | 5 |
| Journal | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
| Volume | 1 |
| Publication status | Published - 1 Dec 2004 |
| Event | Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: 7 Nov 2004 → 10 Nov 2004 |