Non-Linear UWB Receivers With MLSE Post-Detection
AuthorsFlorian Trösch, Thomas Zasowski, and Armin Wittneben
ReferenceIEEE Vehicular Technology Conference, VTC Spring 2008, Singapore, Singapore, May 2008
AbstractA wireless body area network with an average throughput of 500 kbps is considered based on ultra-wideband (UWB) pulse position modulation. For a long battery autonomy ultra low power consumption is essential. In  a FCC compliant ultra low power UWB communication system was presented. By means of a 1% duty cycle at 50 Mbps peak data rate, the power consumption of the system is estimated below 1 mW. To increase inter-symbol interference (ISI) robustness as well as for synchronization a simple post-detection maximum-likelihood sequence estimator (MLSE) has been presented , . In this work, we extend this MLSE approach to over-sampled energy detectors and non-ideal integration windows. Furthermore, we present optimal MLSE metrics based on partial channel state information as a performance benchmark.
Keywordsultra-wideband, impulse radio, inter-symbol interference,non-linear receiver, viterbi decoder, MLSE post-detection
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