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Full-Text Articles in Social and Behavioral Sciences
System Implementation Of Self-Mixing Interferometry Technique-Based Measurement On Young's Modulus, Ke Lin, Yanguang Yu, Zhenghao Liu, Jiangtao Xi, Huijun Li, Cuiling Liu
System Implementation Of Self-Mixing Interferometry Technique-Based Measurement On Young's Modulus, Ke Lin, Yanguang Yu, Zhenghao Liu, Jiangtao Xi, Huijun Li, Cuiling Liu
Faculty of Engineering and Information Sciences - Papers: Part A
Young's modulus (denoted by E) is an intrinsic and valuable quantity for appropriate estimation of material performance. E can be obtained from the resonant frequency from the vibration of the tested material sample excited by the external forces. In this paper, we present a system design for determining the parameter by using an optical feedback self-mixing interferometry (OFSMI) system. An OFSMI system consists of a laser diode (LD), a micro-lens and an external target. The material sample to be tested is used as the external target. The vibration of the sample causes the variation of the length of the external …
Feasibility Study On The Implementation Of Ieee 802.11 On Cloud-Based Radio Over Fibre Architecture, Sen Zhang, Daniel Franklin
Feasibility Study On The Implementation Of Ieee 802.11 On Cloud-Based Radio Over Fibre Architecture, Sen Zhang, Daniel Franklin
Faculty of Engineering and Information Sciences - Papers: Part A
This paper investigates the throughput performance of the IEEE 802.11 MAC when the physical layer is implemented remotely on a cloud-based SDR platform. An analytical model which considers a non-zero late ACK arrival probability is proposed to analyse throughput performance. Both conventional DCF and the Block ACK enhancement from current IEEE 802.11 standards are analysed using the proposed model. Results show that the network delay variance significantly degrades the performance of conventional DCF while enabling Block ACK significantly reduces this degradation.