期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2015
卷号：2015
DOI：10.1155/2015/456460
出版社：Hindawi Publishing Corporation
摘要：This paper investigates the bit-error-rate (BER) and
maximum allowable data throughput (MADTh) performance
of a novel low-power mismatched Rake receiver structure for
ultra wideband (UWB) wireless monitoring sensor networks in
underground mine tunnels. This receive node structure provides
a promising solution for low-power and reliable communications
in underground mine tunnels with more than 90% reduction
in power consumption. The BER and MADTh of the proposed
receive nodes are investigated via Monte-Carlo simulations
in UWB line-of-sight (LOS) and non-line-of-sight (NLOS)
underground mine tunnels. The proposed mismatched receive
nodes achieve a MADTh and BER performance approaching
the corresponding optimal nodes with ≈1 dB and 1.5 dB
BER performance degradation in LOS and NLOS scenarios,
respectively. The mismatched PRake (M-PRake) receiver model
with represents the best choice for low-power and reliable
communications in sensor networks in underground mine tunnels
with BER performance degradation of 1 dB and 3 dB in LOS
and NLOS scenarios, respectively, as compared to the optimum
detector. This minimal degradation in performance is traded for
more than 90% reduction in power consumption.
