DocumentCode :
2151908
Title :
Coherent detection and channel coding for bistatic scatter radio sensor networking
Author :
Fasarakis-Hilliard, Nikos ; Alevizos, Panos N. ; Bletsas, Aggelos
Author_Institution :
School of Electronic and Computer Engineering, Technical University of Crete, Chania, Greece
fYear :
2015
fDate :
8-12 June 2015
Firstpage :
4895
Lastpage :
4900
Abstract :
With low monetary cost and minimal energy consumption, communications by means of reflection and scatter radio have emerged as key enabler for low-cost, large-scale and dense ubiquitous wireless sensor network applications. This work maximizes scatter radio communication range by (a) proposing a novel coherent receiver of frequency-shift keying (FSK) modulation for the bistatic scatter radio channel (i.e., carrier emitter and receiver are dislocated) and (b) employing specific short block-length cyclic error-correcting codes. Despite the presence of three unknown channel links due to the bistatic setup and multiple unknown scatter radio-related parameters, the proposed receiver vastly improves BER performance compared to state-of-the-art bistatic scatter radio receivers. Experimental corroborating results are offered, with a commodity software-defined radio (SDR) reader, a custom scatter radio tag and omnidirectional antennas. Tag-to-reader ranges up to 150 meters are reported with as little as 20 milliWatt transmission power, offering range extension of approximately 10 additional meters compared to state-of-the-art bistatic receivers.
Keywords :
Bit error rate; Frequency shift keying; Maximum likelihood estimation; Receivers; Sensors; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2015 IEEE International Conference on
Conference_Location :
London, United Kingdom
Type :
conf
DOI :
10.1109/ICC.2015.7249098
Filename :
7249098
Link To Document :
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