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Multi-Antenna Noncoherent ML Synchronization for UWB-IR Faded Channels  

Baccarelli Enzo (INFOCOM Department, University of Rome La Sapienza)
Biagi Mauro (INFOCOM Department, University of Rome La Sapienza)
Pelizzoni Cristian (INFOCOM Department, University of Rome La Sapienza)
Cordeschi Nicola (INFOCOM Department, University of Rome La Sapienza)
Publication Information
Journal of Communications and Networks / v.8, no.2, 2006 , pp. 194-204 More about this Journal
Abstract
This contribution focuses on the maximum likelihood (ML) noncoherent synchronization of multi-antenna transceivers working in faded environments and employing ultra-wideband impulse radio (UWB-IR) transmit technology. In particular, the Cramer-Rao bound (CRB) is derived for the general case of multiple input multiple output (MIMO) UWB-IR systems and used to compare the ultimate performance of three basic transmit schemes, thereinafter referred to as single input multiple output (SIMO), MIMO equal signaling (MIMO-ES), and MIMO orthogonal signaling (MIMO-OS) ones. Thus, the noncoherent ML synchronizer is developed for the better performing transmit scheme (i.e., the SIMO one) and its performance is evaluated under both signal acquisition and tracking operating conditions. The performance gain in the synchronization of UWB- IR signals arising by the utilization of the multi-antenna technology is also evaluated.
Keywords
Cramer-Rao bound (CRB); multi-antenna; multiple input multiple output (MIMO) fading channels; noncoherent maximum likelihood (ML) synchronization; ultra-wideband impulse radio (UWB-IR);
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Times Cited By Web Of Science : 3  (Related Records In Web of Science)
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