iosr-JECE   Volume-12 ~ Issue-1 ~ Jan-Feb 2017

Abstract: In the satellite telemetry command, controlling the power of the uplink signal, radiated away from the Earth to the spacecraft and downlink signal, radiated toward the Earth form the spacecraft is very important. The Uplink is transmitted at high power because of the unlimited power, while downlink should be controlled in power because of limited spacecraft power resources. This results in a lower Power Spectral Density (PSD) for the downlink and higher PSD for the uplink, which in many cases the uplink power due to be strong enough to reach the satellites at GEO would often also violate the PSD limits in the other orbits satellite telemetry signals like LEO........

Keywords: Satellite telemetry Data, PSD, CDMA, Spread Spectrum, ASI, Jamming, DSSS, FHSS, PN Code, Maximal Length Code, Gold code, Auto-Correlation, Cross-Correlation, Reyleigh Channel, AWGN Channel.

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Abstract: Wireless Communication Technology has developed over the past few yearsfor other objectives.The Multiple InputMultiple Output (MIMO) is one of techniques that is used to enhancethe data rates, in which multiple antennas are employed both the transmitter and receiver. Multiple signals are transmitted from different antennas at the transmitter using the same frequency and separated space. Various channel estimation techniques are employed in order to judge the physical effects of the medium present. In this paper, we analyze and implementvarious estimation techniques for MIMO Systems such as Least Squares (LS), Minimum Mean Square Error (MMSE),these techniques are therefore compared to effectively estimate the channel in MIMO System.........

Keywords: Channel estimation, Minimum mean square error (MMSE), Least square (LS), Kalman filter, Orthogonal frequency division multiplexing.

[1]. Joseph, W. Reynders, W. Debruyne, J. and Martens, L., "Influence of Channel Models and MIMO on the Performance of a System based on IEEE 802.16",Wireless Communications and Networking Conference, ISBN 1-4244-0659-5, pp.1826-1830, 11-15March, 2007.
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[3]. Yan taoQiao, Songyu Yu, Pengcheng Su and Lijun Zhang, "Research on an IterativeAlgorithm of LS Channel Estimation in MIMO OFDM Systems", IEEE Transactions on Broadcasting, vol. 51, no. 1, pp. (149-153), March 2005.
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Abstract: This paper focuses on literature of the development of a wireless sensor network on agricultural environment to monitor environmental conditions and deduce the appropriate environmental parameters required for the high yield of crop production on a given farmland. Among the different technologies for crop monitoring, Wireless Sensor Networks (WSNs) are recognized as a powerful one to collect and process data in the agricultural domain with low-cost and low-energy consumption. Agriculture and farming is one of the industries which have recently diverted their attention to WSN, seeking this cost effective technology to improve its production and enhance agriculture yield standard. Wireless Sensor Networks (WSNs) have attracted much attention in recent years.

Keywords: Wireless Sensor Network, Precision Agriculture, Environmental Monitoring

[1]. Oliveira, L. M., & Rodrigues, J. J., Wireless Sensor Networks: A Survey on Environmental Monitoring. JCM, 6(2), 2011, 143-151.
[2]. Wang, N., Zhang, N., & Wang, M., Wireless sensors in agriculture and food industry—Recent development and future perspective. Computers and electronics in agriculture, 50(1), 2006, 1-14.
[3]. Srbinovska, M., Gavrovski, C., Dimcev, V., Krkoleva, A., & Borozan, V., Environmental parameters monitoring in precision agriculture using wireless sensor networks. Journal of Cleaner Production, 88(1), 2015, 297-307.
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[5]. Abbasi, A. Z., Islam, N., & Shaikh, Z. A., A review of wireless sensors and networks' applications in agriculture, Computer Standards & Interfaces, 36(2), 2014, 263-270

Abstract: Electronic Commerce is process of doing business through computer networks. A person sitting on his chair in front of a computer can access all the facilities of the Internet to buy or sell the products. Unlike traditional commerce that is carried out physically with effort of a person to go & get products, ecommerce has made it easier for human to reduce physical work and to save time. E-Commerce which was started in early 1990's has taken a great leap in the world of computers, but the fact that has hindered the growth of e-commerce is security...............

Keywords: Product display tools, Shopping cart, Payment system, Business to consumer (B2C), Business to Business (B2B), Business to Government (B2G), Business to Consumer (B2C), Consumer to Business (C2B) etc.

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Abstract: As population is growing, there is an increase in the number of vehicles on the road and hence an improvement in the problems associated with traffic management, especially the Public Transport. There is also an increase in the number of accidents and various other traffic related issues. Intelligent Public Transportation Management System (IPTMS) provides the solution to most of these problems by integrating existing technologies with the underlying infrastructure. An efficient vehicle tracking system is designed and developed for tracking the movement of any equipped vehicle from any location at any time...............

Keywords: GPS, GSM, Android, Web Server, IPTMS, IOT, RFID

[1]. 2015 American Public Transportation Association. Available online at :
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[4]. Sleyman Eken and Ahmet Sayar, "A Smart Bus Tracking System Based on Location-Aware Services and QR Codes", Innovations in Intelligent Systems and Applications (INISTA) Proceedings, 2014 IEEE International Symposium, Alberobello, DOI:10.1109/INISTA. 2014.68736 34.
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Abstract: Flood mapping from Synthetic Aperture Radar (SAR) data has attracted considerable attention in recent years. Flood is not only one of the widest spread natural disasters, which regularly causes large numbers of casualties with rising economic loss, extensive homelessness and disaster induced disease, but is also the most frequent disaster type. A valuable information source for such a procedure can be remote sensing synthetic aperture radar (SAR) imagery. However, flood scenarios are typical examples of complex situations in which different factors have to be considered to provide accurate and robust interpretation of the situation on the ground................

Keywords: Empirical Bayesian networks (BNs), data fusion, flood mapping, synthetic aperture radar (SAR) change detection, synthetic aperture radar (SAR)/interferometric SAR (InSAR) time series analysis.

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[5]. D. Frey, M. Butenuth, and D. Straub, "Probabilistic graphical models for flood state detection of roads combining imagery and DEM," IEEE Geosci. Remote Sens. Lett., vol. 9, no. 6, pp. 1051–1055, Nov. 2012.

Abstract: In today's rapid growing technology, digital data are exchanged very frequently in seamless wireless networks. Some of the real time applications examples which are transmitted quickly are voice, video, images and text but not limited to high sensitive information like transaction of creditcard, banking and confidential security numbers/data. Thus protection of confidential data is required with high security to avoid unauthorised access to Wireless networks. This can be done by a technique called 'Cryptograhy' and there are two crytography techniques available...............

Keywords: LFSR, Keys, Encryption

[1]. "VLSI design of secure cryptographic algorithm", Revini s. shende, Mrs. Anagha y. Deshpande, International Journal of Engineering research & applications (IJERA) Vol. 3 March-April 2013.
[2]. "A Survey on Various Cryptography Analysis"by Mitali, Vijay Kumar and Arvind Sharma, Volume 3, Issue 4, July-August 2014.
[3]. "Encryption Using Different Techniques" by Dimple1 - Vol. 2, No.1, January-February-2013.
[4]. "Image Encryption using Different Techniques for High Security Transmission over a Network", by Mohammad Sajid, Qamruddin Khizrai, Prof. S.T. Bodkhe - Volume 2, Issue 4, June-July, 2014.
[5]. Amrutha k, Jayachandra Naidu V., "Advanced Encryption Standard Algorithm Implementation Using Verilog HDL" Vol. 04, Article 06117; July 2013.

Abstract: We study the breakdown voltage under low pressure for N2, CO2 gases of with a magnetic field to the electrode of iron and aluminum with diameter (8.8cm) cm and distance separation between them is (3cm). by using Passion curve, we measur less effort collapsed, and we notice that less effort is linked to the collapse of a function held cities and when the magnetic field will be reduced to shed breakdown voltage. Since the breakdown voltage for CO2 is greater than breakdown voltage N2. Through curved Passion was calculated (γ) and when to shed the magnetic field will increase in value

Keywords: Breakdown voltage, secondary emission coefficient

[1]. Annemie Bogaerts , Erik Neyts " Gas discharge plasma and their application " spectrachimica Acta part B57 (2002) 609-658
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Abstract: The research work deals with the design and implementation of Speech recognition device using Raspberry Pi for essential usage to visually impaired people. Now a day's blind people are increasing enormously so, the main objective of the research is to provide a simple, cheap, friendly user, and compact device for visually impaired people to use multimedia applications of operating system like text, music player and dialing system by interfacing GSM module. All the above are implemented in a low cost Raspberry Pi board. Thus a goal of producing an compact device has been designed at low cost using offline speech recognition.

Keywords: Raspberry pi, sound card, GSM module

[1]. Sharma, Rupam Kumar, et al. "Android interface based GSM home security system." Issues and Challenges in Intelligent Computing Techniques (ICICT), 2014 International Conference on. IEEE, 2014.
[2]. De Luca, Gabriele, et al. "The use of NFC and Android technologies to enable a KNX-based smart home." Software, Telecommunications and Computer Networks (SoftCOM), 2013 21st International Conference on. IEEE, 2013.
[3]. Gu, Yietal. "Design and Implementation of UPnP-Based Surveillance Camera System for Home Security." Information Science and Application (ICISA), 2013International Conference on. IEEE, 2013.
[4]. VanThanh Trung, Bui, and Nguyen Van Cuong. "Monitoring and controlling devices system by GPRS onFPGA platform." Advanced Technologies for Communications (ATC), 2013 International Conference on. IEEE, 2013.

Abstract: Now a day's numerous wireless communication standards have raised additional stringent requirements on each throughput and flexibility for FFT computation. Advanced wireless systems support multiple standards to satisfy the demands of user application necessities. A wireless system whereas supporting multiple standards should also satisfy performance necessities of these supported standards. Meeting performance requirements of multiple standards is a challenge while designing a system. Fast Fourier transformations, a kernel processing task in communication systems, are studied intensively for efficient software and hardware implementations.................

Keywords: Code composer studio 3.1, C compiler, Connecting wires, DSK kit, MATLAB, TMS320C6713, Spectrum analyzer.

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