Low Power UWB Transceivers for ISI Limited Environments: Design and Performance Verification

Date Added: Jun 2009
Format: PDF

Recently, the authors proposed an FCC compliant, ultra low power UWB transceiver based on Binary Pulse Position Modulation (BPPM) and a symbol-wise Energy Detector (ED). By means of a rigorous low duty cycle operation of 1% at a peak data rate of 50 Mbps, it features an average data rate of 500 kbps with a total average power below 1 mW. In this paper, this symbol-wise ED is supplemented by a post-detector based on Maximum Likelihood Sequence Estimation (MLSE) which facilitates communication in Inter-Symbol Interference (ISI) limited environments. A low complexity Viterbi detector, its metrics, as well as the required channel estimation are presented in a form which allows for direct implementation.