iosr-JECE   Volume-13 ~ Issue-2 ~ March-April 2018

Abstract: Domestic automation refers back to the department of automation that deals with the techniques dedicated to the reduction of human efforts and involvement in attaining obligations. The main goal of those domestic automation structures has the use of internet of things (IoT) is to inhibit automatic and digital manage of family functions interest and home equipment. This paper deals with the wide range connectivity and power efficient manager of the house equipment in a consumer-pleasant manner. These capabilities of connectivity, scalability, energy saving may be completed by means of the usage of raspberry pi, which acts as an interface between the hardware and the software of the complete device which may be connected to number of peripherals the usage of USB ports or HDMI port and GPIO................

Index Terms - Wi-Fi connectivity, Internet of Things (IoT), Raspberry Pi, Home-Automation, (Global System for Mobile Communications) GSM.

[1] Shih-Pang Tseng, Bo-Rong Li, Jun-Long Pan, and Chia-JuLin,"An Application of Internet of Things with Motion Sensing on Smart House", 978-1-4799-6284-6/14 c ⃝2014 IEEE.
[2] Andrea Zanella, Nicola Bui, Angelo Castellani, LorenzoVangelista, and Michele Zorzi, "Internet of Things for Smart Cities", IEEE INTERNET OF THINGS JOURNAL,VOL. 1, NO. 1, FEBRUARY 2014.
[3] Android based Home automation Using RaspberryPi, by ShaijuPaul, AshlinAntony and Aswathy.B, IJCAT-International Journal of computing and Technology,Volume-1,Issue1, February2014.
[4] Home Automation System using android and Wi-Fi‖ byR.S.Surya-vanshi, KunalKhivensara, Gulam- Hussain, Nitish Bansal, VikashKumar. Inter-national journal of Engineering and computer science, ISSN:2319-7242, Volume3, Issue:10,October2014. Page No:8792-8794.
[5] Raspberry pi and Wi-Fi Based Home- Automation‖ byP.Bhagya lakshmi,G.Divya, L.Aravinda. International Journal of Engineering Research and Applications (IJERA), ISSN:2248-9622 (NCDATES- 09th & 10th January 2015).

Abstract: There is a huge demand for spectrum, but in conventional system radio spectrum is inefficiently used. To overcome this problem and improve spectrum utilization, cognitive radio concept has been proposed. Cognitive radio (CR) is the greatest mechanism for use spectrum efficiently. The main objective of CR is to use scarce and limited natural resources efficiently without any interference to the primary users. One of most challenging issues in cognitive radio systems is spectrum sensing concepts. There are various spectrum sensing techniques like matched filter detection, energy detection, cyclostationary detection, covariance detection and wavelet detection. Out of these techniques energy detection has got the most attention by the researchers due to its simplicity and low computational requirements..............

Keywords: Cognitive Radio, Spectrum sensing, Energy detection, Detection threshold, Adaptive threshold.

[1] FCC, "SPECTRUM POLICY TASK FORCE REPORT," IN PROCEEDINGS OF THE FEDERAL COMMUNICATIONS COMMISSION (FCC), WASHINGTON DC, USA, NOV. 2002.
[2] J. Mitola and G. Q. Maguire, "Cognitive radio: making software radios more personal," IEEE Personal Communications Magazine, August 1999, pp. 13-18.
[3] Hyun-Ho Choi, K. Jang and Y. Cheong, "Adaptive sensing threshold control based on transmission power in cognitive radio systems," IEEE 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communication, pp. 1-6, May 2008.
[4] Gorcin A., Qaraqe K.A., Celebi H., Arslan H .. An adaptive threshold method for spectrum sensing in multi-channel cognitive radio networks. IEEE International Conference on Telecommunications (lCT), 2010 .
[5] Joshi,D.R.,Popescu,D.C.,Dobre,O.A . Dynamic threshold adaptation for spectrum sensing in cognitive radio systems. Radio and Wireless Symposium (RWS), 2010 IEEE. 2010, Page(s): 468 - 47l.

Abstract: Improved version of DTN (Delay tollerent network) is ICWN. In ICWN (intermittently connected wireless networks) nodes are not directly connected to each other instead it is connected randomly according to the relationship between the neighbour nodes. So the data forwarding in ICWN with less latency and high data delivery rate is very difficult. In this paper we obtain the improved data delivery ratio with increased speed and high QOP (Quality of protection) by using BPSK modulation. To forward data in ICWN, the process based and relationship based credibility is considered for finding the neighbour nodes. The numerical result shows the comparison between the conventional techniques (PROPHET and Trust threshold) and QOP-DF (Quality of protection data forwarding) technique. Numerical result shows the reliable data transmission with improved QOP, reduction of latency, and increased data delivery ratio.

Keywords: DTN(Delay tollerent network), ICWN(intermittently connected wireless networks), QOP(quality of protection)

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[3] S.N. Foley et al., "Multilevel Security and Quality of Protection," Proc. First Workshop on Quality of Protection, Como, Italy, Sept. 2005.
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[5] H. J. Zhu et al., "A Probabilistic Misbehaviour Detection Scheme toward Efficient Trust Establishment in Delay- Tolerant Networks," IEEE Trans. Parallel Distrib Sys., vol. 25, no. 1, 2014, pp. 22–32.