Title :
On a hybrid preamble/soft-output demapper approach for time synchronization for IEEE 802.15.6 narrowband WBAN
Author :
Nasr, Imen ; Atallah, Leila Najjar ; Cherif, Sofiane ; Yang Jianxiao ; Wang Kunlun
Author_Institution :
Unite d´Inf. et d´Ing. des Syst. (U2IS), Ecole Nat. Super. de Tech. Av. (ENSTA ParisTech), Palaiseau, France
Abstract :
In this paper, we present a maximum likelihood (ML) based time synchronization algorithm for Wireless Body Area Networks (WBAN). The proposed technique takes advantage of soft information retrieved from the soft demapper for the time delay estimation. This algorithm has a low complexity and is adapted to the frame structure specified by the IEEE 802.15.6 standard for the narrowband systems. Simulation results have shown good performance which approach the theoretical mean square error limit bound represented by the Cramer Rao Bound (CRB).
Keywords :
body area networks; maximum likelihood estimation; personal area networks; protocols; Cramer-Rao bound; IEEE 802.15.6 standard; frame structure; hybrid preamble-soft output demapper; low complexity algorithm; maximum likelihood algorithm; mean square error limit bound; narrowband WBAN; time synchronization algorithm; wireless body area network; Delay effects; IEEE 802.15 Standards; Maximum likelihood estimation; Receivers; Synchronization; IEEE 802.15.6; ML estimation; WBAN; soft demapping; time synchronization;
Journal_Title :
Communications, China
DOI :
10.1109/CC.2015.7084397
