Title
Revisiting the So-Called Constructive Interference in Concurrent Transmission
Abstract
Many works attributed the successful reception of concurrent transmission (CT) to the constructive interference. However, due to the inevitable carrier frequency offset (CFO) and the resulted beating effect, the claim of constructive interference is actually not valid. To clarify the reason behind the successful receptions under CT, we conduct extensive evaluations and identify the following findings. 1) We show that the IEEE 802.15.4 receivers survive the beating effect mainly because of the direct sequence spread spectrum (DSSS), while systems without the protection of DSSS are not applicable to CT. 2) We identify a counterintuitive phenomenon that the IEEE 802.15.4 receiver could survive only the beating results from large CFO, while performing poorly when CFO is small. 3) We demonstrate that, even if the receivers survive, CT links lead to little performance improvements compared to conventional signal transmission links from the SNR point of view.
Year
DOI
Venue
2016
10.1109/LCN.2016.56
2016 IEEE 41st Conference on Local Computer Networks (LCN)
Keywords
Field
DocType
constructive interference,concurrent transmission reception,carrier frequency offset,beating effect,IEEE 802.15.4 receiver,direct sequence spread spectrum,DSSS,SNR
Transmission (mechanics),Transmission (telecommunications),Telecommunications,Computer science,Signal-to-noise ratio,Carrier frequency offset,Computer network,Electronic engineering,Interference (wave propagation),Direct-sequence spread spectrum,Spread spectrum
Conference
ISSN
ISBN
Citations 
0742-1303
978-1-5090-2055-3
2
PageRank 
References 
Authors
0.49
0
4
Name
Order
Citations
PageRank
Chun-Hao Liao130.97
Yuki Katsumata220.49
Makoto Suzuki36714.19
Hiroyuki Morikawa443269.52