Title :
A Study of Multiple Access Schemes for Wireless Sensor Network Applications via High Altitude Systems
Author :
Yang, Z. ; Mohammed, A.
Author_Institution :
Sch. of Eng., Blekinge Inst. of Technol., Ronneby
Abstract :
In this paper, we investigate the performance of a multiple access scheme based on orthogonal frequency-division multiplexing (OFDM) in High Altitude Platform (HAP) system for Wireless Sensor Network (WSN) applications. In our study, HAPs are used to replace the traditional gateway deployed on the ground and collect data from sensor nodes. Two scenarios of OFDM schemes with different subcarrier spacing are simulated in Rayleigh and Ricean fading environment. Results show the multiple access scheme based on OFDM for WSN can improve the performance against multipath transmission.
Keywords :
OFDM modulation; Rayleigh channels; Rician channels; time-varying channels; wireless sensor networks; Rayleigh fading channel; Ricean fading channel; high altitude systems; multipath transmission; multiple access schemes; orthogonal frequency-division multiplexing; wireless sensor network applications; Acoustic sensors; Artificial satellites; Costs; Fading; IP networks; Mobile communication; OFDM; Satellite broadcasting; Sensor phenomena and characterization; Wireless sensor networks;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073348
