Abstracts – Browse Results
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Aderinlewo, O and Alade, G A (2014) Reliability-based analysis and design of steel frames with different supports. Journal of Engineering, Design and Technology, 12(01), 39-52.
Cardoso, A F S P and Torkkeli, M (2014) Innovation in footwear companies – does it pay off?. Journal of Engineering, Design and Technology, 12(01), 128-54.
Fernando, N G, Amaratunga, D and Haigh, R (2014) The career advancement of the professional women in the UK construction industry: The career success factors. Journal of Engineering, Design and Technology, 12(01), 53-70.
Kiyang, S T and Zyl, R V (2014) Empirical investigation of wireless sensor network performance in noisy environments. Journal of Engineering, Design and Technology, 12(01), 29-38.
- Type: Journal Article
- Keywords: Electrical engineering; Interference; Signal-to-noise ratio; White noise; Wireless communications; Wireless sensor networks
- ISBN/ISSN: 1726-0531
- URL: https://doi.org/10.1108/JEDT-02-2012-0006
- Abstract:
Purpose – The purpose of this work is to assess the influence of ambient noise on the performance of wireless sensor networks (WSNs) empirically and, based on these findings, develop a mathematical tool to assist technicians to determine the maximum inter-node separation before deploying a new WSN. Design/methodology/approach – A WSN test platform is set up in an electromagnetically shielded environment (RF chamber) to accurately control and quantify the ambient noise level. The test platform is subsequently placed in an operational laboratory to record network performance in typical unshielded spaces. Results from the RF chamber and the real-life environments are analysed. Findings – A minimum signal-to-noise ratio (SNR) at which the network still functions was found to be of the order 30?dB. In the real-life scenarios (machines, telecommunications and computer laboratories), the measured SNR exceeded this minimum value by more than 20?dB. This is due to the low ambient industrial noise levels observed in the 2.4?GHz ISM band for typical environments found at academic institutions. It, therefore, suggests that WSNs are less prone to industrial interferences than anticipated. Originality/value – A predictive mathematical tool is developed that can be used by technicians to determine the maximum inter-node separation before the WSN is deployed. The tool yields reliable results and promises to save installation time.
Othman, A A E (2014) A study of the competency requirements of property development graduates to meet the qualifications of the South African construction industry. Journal of Engineering, Design and Technology, 12(01), 2-28.
Rajiv, P, Logesh, R, Vinodh, S and Rajanayagam, D (2014) Financial feasibility and value engineering principles integrated quality function deployment for a manufacturing organization: A case study. Journal of Engineering, Design and Technology, 12(01), 71-88.
Sun, Y, Djouani, K, Wyk, B J v, Wang, Z and Siarry, P (2014) Hypothesis testing-based adaptive PSO. Journal of Engineering, Design and Technology, 12(01), 89-101.
Vinodh, S and Jayakrishna, K (2014) Development of integrated ECQFD, LCA and sustainable analysis model: A case study in an automotive component manufacturing organization. Journal of Engineering, Design and Technology, 12(01), 102-27.