Multi-antenna noncoherent ML synchronization for UWB-IR faded channels

Author

Baccarelli, Enzo ; Biagi, Mauro ; Pelizzoni, Cristian ; Cordeschi, Nicola

Author_Institution

INFOCOM Department, University of Rome “La Sapienza,” via Eudossiana 18, 00184 Rome, Italy

Volume

8

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

194

Lastpage

204

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

Delay; Equations; MIMO; Maximum likelihood estimation; Synchronization; Transmitting antennas; Cramer-Rao bound (CRB); multi-antenna; multiple input multiple output (MIMO) fading channels; noncoherent maximum likelihood (ML) synchronization; ultra-wideband impulse radio (UWB-IR);

fLanguage

English

Journal_Title

Communications and Networks, Journal of

Publisher

ieee

ISSN

1229-2370

Type

jour

DOI

10.1109/JCN.2006.6182748

Filename

6182748