Title :
Link correlation property in WBAN at 2.4 GHz by multi-link channel measurement
Author :
Kim, Minseok ; Wangchuk, Karma ; Takada, Jun-ichi
Author_Institution :
Grad. Sch. of Sci. & Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
In this paper, the shadowing correlations among the multiple links between a coordinate node and sensor nodes in wireless BAN systems were investigated by measurements under everyday-life scenarios. We have developed a body-worn RSSI (receive signal strength indicator) logging system with off-the-shelf ZigBee sensor devices at 2.4 GHz for long time continuous and synchronized measurement among sensor nodes. The cross correlation coefficients calculated within a short time window were statistically characterized. The shadowing correlation will become useful information to develop and evaluate a multi-hop relay and a cooperative transmission scheme for increasing the reliability and power efficiency.
Keywords :
Zigbee; body area networks; cooperative communication; radio links; telecommunication network reliability; wireless channels; WBAN; body area network; body-worn RSSI; continuous measurement; cooperative transmission scheme; coordinate node; cross correlation coefficient; frequency 2.4 GHz; link correlation property; multihop relay; multilink channel measurement; off-the-shelf ZigBee sensor device; power efficiency; receive signal strength indicator logging system; reliability; sensor node; shadowing correlation; short time window; synchronized measurement; wireless BAN system; Antenna measurements; Correlation; Fading; Gain; Legged locomotion; Shadow mapping; Wireless communication; BAN; ZigBee; body area network; correlation; fading; multi-link; synchronized measurement;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6206638
