TY - JOUR
T1 - Multipath energy combining for fast UWB acquisition without channel knowledge
AU - Bai, Kai
AU - He, Ning
AU - Tepedelenlioglu, Cihan
N1 - Funding Information:
Manuscript received April 26, 2007; revised December 4, 2007 and April 8, 2008; accepted June 5, 2008. The associate editor coordinating the review of this paper and approving it for publication was D. Dardari. The work in the paper was supported by NSF Career Grant No. CCR-0133841, and Arizona State University. Parts of this work have appeared in [1], [2].
PY - 2008/10
Y1 - 2008/10
N2 - In this paper, we study the effectiveness of the multipath energy combining for the coarse acquisition of UWB signals. The performances of different detectors, including single pulse correlator (SPC), energy detector (ED), and transmitted-reference (TR), are derived and compared in terms of the mean acquisition time (MAT) and the false acquisition rate (FAR) using flow graph analysis in a two-step random search framework. The results show that both the ED and the TR can achieve a lower acquisition time than the SPC under the same FAR constraint due to their multipath energy combining capabilities. Simulation results also reveal that the ED scheme is more vulnerable to multiuser interference than the TR and the SPC schemes.
AB - In this paper, we study the effectiveness of the multipath energy combining for the coarse acquisition of UWB signals. The performances of different detectors, including single pulse correlator (SPC), energy detector (ED), and transmitted-reference (TR), are derived and compared in terms of the mean acquisition time (MAT) and the false acquisition rate (FAR) using flow graph analysis in a two-step random search framework. The results show that both the ED and the TR can achieve a lower acquisition time than the SPC under the same FAR constraint due to their multipath energy combining capabilities. Simulation results also reveal that the ED scheme is more vulnerable to multiuser interference than the TR and the SPC schemes.
KW - Acquisition
KW - Multipath energy combining
KW - Random search
KW - Ultra-wideband
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U2 - 10.1109/T-WC.2008.07-0436
DO - 10.1109/T-WC.2008.07-0436
M3 - Article
AN - SCOPUS:55149102391
SN - 1536-1276
VL - 7
SP - 3702
EP - 3707
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 10
M1 - 4657314
ER -