Iterative Frequency-Domain Packet Combining Techniques for UWB Systems with Strong Interference Levels |
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Authors: | Mário Marques da Silva Rui Dinis Paulo Montezuma |
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Affiliation: | 1. Instituto de Telecomunica??es, Lisbon, Portugal 2. Universidade Autónoma de Lisboa, Lisbon, Portugal 3. Escola Naval/CINAV, Lisbon, Portugal 4. DEE-FCT-UNL, Caparica, Portugal 5. UNINOVA, Caparica, Portugal
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Abstract: | UWB (Ultra Wideband) systems tend to suffer strong interference from signals that occupy a significant part of the transmission band. This is an important constraint, especially when the channel remains fixed for a long period of time. In order to overcome this limitation, this paper considers UWB systems employing Single-Carrier with Frequency-Domain Equalization techniques. We propose the corresponding receiver, which also allows the soft packet combining associated to different Automatic Repeat ReQuest transmission attempts, as a measure to improve the performance through the exploitation of diversity. Our techniques are able to cope with strong interference levels as well as deep fading, even for fixed channels. |
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