Geodesic
A Two-step MF Signal Acquisition Method for Wireless Underground Sensor Networks
Computer Science and Information Systems, Tome 13 (2016) no. 2.

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Signal acquisition plays a critical role on the bit error rate (BER) of a direct sequence spread spectrum (DS/SS) communication system working with low frequency. In this paper, we propose a new signal acquisition method. The acquisition process includes coarse matched filter (MF) location in the first stage and an accurate MF acquisition as a verification mode for the second stage. The performance metrics, including mean acquisition time (MAT) and power consumption, are accuracy. The results indicate that when the signal-to-noise ratio (SNR) keeping consistent, the MAT of the proposed method is less than the original one. When the SNR is around -5dB, the system mismatch rate is about 5.6x10^-4, which takes only one percent of those achieved in the original acquisition algorithms. The twostep MF acquisition method is stable except its power consumption being a little higher than the original method.
Keywords: acquisition, spread spectrum, signal processing, wireless communication, underground sensor networks 
@article{CSIS_2016_13_2_a18,
     author = {Wei Liang and Yong Xie and Xuhui Chen and Osama Hosam and Xiaoyan Chen},
     title = {A {Two-step} {MF} {Signal} {Acquisition} {Method} for {Wireless} {Underground} {Sensor} {Networks}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2016_13_2_a18/}
}
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Wei Liang; Yong Xie; Xuhui Chen; Osama Hosam; Xiaoyan Chen. A Two-step MF Signal Acquisition Method for Wireless Underground Sensor Networks. Computer Science and Information Systems, Tome 13 (2016) no. 2. http://geodesic.mathdoc.fr/item/CSIS_2016_13_2_a18/