Safety-critical wireless sensor networks under a polyphase spreading sequences scenario

Authors

POONAM GOYAL
BRAHMJIT SINGH

DOI

10.3906/elk-1605-307

Abstract

Reliable communication is a vital issue for safety- and mission-critical wireless sensor network environments such as industrial monitoring, medical care, and battlefield surveillance. These networks require highly accurate and delay-intolerant wireless communications. Under such critical conditions, the chip sequences used in these networks become vulnerable because of channel impairments and other interferences, thereby significantly decreasing overall system performance. In this paper, polyphase sequences are employed at the physical layer of IEEE Standard 802.15.4 to enhance the communication reliability of wireless sensor networks. Through an extensive simulation, it is found that upon applying polyphase sequences, the chip errors are reduced to $2.94\times {10}^{-6}$ in comparison to $1.18\times {10}^{-5}$ of conventional binary sequences (PN sequences).

Keywords

Chip sequences, aperiodic autocorrelation function, aperiodic cross-correlation function, chip error rate

First Page

2522

Last Page

2534

Recommended Citation

GOYAL, POONAM and SINGH, BRAHMJIT (2017) "Safety-critical wireless sensor networks under a polyphase spreading sequences scenario," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25: No. 3, Article 73. https://doi.org/10.3906/elk-1605-307
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss3/73