Automatic anchor calibration in IEEE 802.15.4a networks

2011 ◽  
Author(s):  
Marcel Muller ◽  
Julian Lategahn ◽  
Lars Telle ◽  
Christof Rohrig
Keyword(s):  
Ieee 802.15.4A

scholarly journals Improved energy detection receiver for ranging in IEEE 802.15.4a standard

2017 ◽  
Vol 10 (2) ◽  
pp. 141-148
Author(s):  
Abdelmadjid Maali ◽  
Geneviève Baudoin ◽  
Ammar Mesloub
Keyword(s):  
Estimation Algorithm ◽  
Energy Detection ◽  
Ultra Wideband ◽  
Line Of Sight ◽  
Accurate Estimation ◽  
Time Of Arrival ◽  
Power Delay Profile ◽  
Wideband Signals ◽  
Toa Estimation ◽  
Ieee 802.15.4A

In this paper, we propose a novel energy detection (ED) receiver architecture combined with time-of-arrival (TOA) estimation algorithm, compliant to the IEEE 802.15.4a standard. The architecture is based on double overlapping integrators and a sliding correlator. It exploits a series of ternary preamble sequences with perfect autocorrelation property. This property ensures coding gain, which allows an accurate estimation of power delay profile (PDP). To improve TOA estimation, the interpolation of PDP samples is proposed and the architecture is validated by using an ultra-wideband signals measurements platform. These measurements are carried out in line-of-sight and non-line-of-sight multipath environments. The experimental results show that the ranging performances obtained by the proposed architecture are higher than those obtained by the conventional architecture based on a single-integrator in both LOS and NLOS environments.

A Study on the Medical Image Transmission Service Based on IEEE 802.15.4a

2007 ◽  
pp. 159-167 ◽  
Author(s):  
Yang-Sun Lee ◽  
Jae-Min Kwak ◽  
Sung-Eon Cho ◽  
Ji-Woong Kim ◽  
Heau-Jo Kang
Keyword(s):  
Medical Image ◽  
Image Transmission ◽  
Ieee 802.15.4A
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