recent trends in electronics & communication systems (vol1, issue2)
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Recent Trends in Electronics & Communication Systems
(RTECS)
May - August 2014
STM JOURNALSScientific Technical Medical
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Recent Trends in Electronics & Communication Systems
(ISSN: 2393-8757)
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Industrial Tribology Machine Dynamics & Maintenance
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Alternative Energy Technology Laboratory,
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Manisha Asit UpadhyayInstitute of Technology, Nirma
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Jhansi, India.
Usha Sandeep MehtaInstitute of Technology (EC-VLSI Design),
Nirma University, India.
Rajib KarDepartment of Electronics &
Communication Engineering, NIT Durgapur,
West Bengal, India.
I take the privilege to present the print version for the [Volume 1 Issue (2)] of Recent Trends in
Electronics and Communication Systems. The intension of RTECS is to create an atmosphere that
stimulates creativeness, research and growth in the area of in Electronics and Communication
Systems.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. RTECS provides an outlet for Research findings and
reviews in areas of Electronics and Communication found to be relevant for National and
International recent developments & research initiative.
The aim and scope of the Journal is to provide an academic medium and an important reference for
the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Electronics and Communication.
Finally, I would like to thank Editors and Authors for their continued support and invaluable
contributions and suggestions in the form of authoring. I express my sincere gratitude and thanks to
our Editorial board for providing write ups, reviewing and providing constructive comments for the
advancement of the journals. With their continuous support and co-operation, we have been able to
publish quality Research/Reviews findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Advances in E-Technologies with ICT-based Innovation and Simulation Priyanka Sethi 1
2. Design and Performance Analysis of a Compact Ultra-Wide Band Textile Antenna on Jeans Material and Bending Consequences Hasan Shehab S., Hassan S., Arifin F. 9
3. Study of Spectrum Sensing Techniques for OFDM-based Cognitive RadioMonika Tripathi 17
4. Survey Based Study of OFDM System and PAPR Reduction TechniquesKandikuppa Anusha, Yashvant Dhiwer, Rakesh Mandal 24
ContentsRecent Trends in Electronics & Communication Systems
RTECS (2014)© STM Journals 2014. All Rights Reserved
Recent Trends in Electronics & Communication Systems ISSN: 2393-8757 (online)
Volume 1, Issue 2
www.stmjournals.com
Advances in E-Technologies with ICT-based Innovation
and Simulation
Priyanka Sethi Associate Professor, Dept of Information Technology, SGTBIMIT, GT Karnal Road, Delhi
Abstract Information and Communication Technology (ICT) has led to digital transformation of
education, health and development- enabling an escape from the monolithic system.ICT
plays a crucial role in revolutionizing the lives of people leading to socio-economic development of the nation. The use of internet in conjunction with electronics has paved
the path to universal interconnectedness. The access to technology is driving the masses
to new networks with real-time interaction, collaboration and innovation. This paper presents a case study of the application of Electronics (E) as employed in 4 Es viz: E-
Health, E-learning, E-government, E-education in capsule form. All these domains are inter-connected.
Keywords: Information and Communication Technology, Digital, Internet, Real-time,
E-technology, E-learning, E-government, E-education.
RTECS (2014) © STM Journals 2014. All Rights Reserved
Recent Trends in Electronics & Communication Systems ISSN: 2393-8757 (online)
Volume 1, Issue 2
www.stmjournals.com
Design and Performance Analysis of a Compact
Ultra-wide Band Textile Antenna on Jeans Material
and Bending Consequences
Hasan Shehab S.*, Hassan S., Arifin F. Department of Electrical and Electronic Engineering,
American International University-Bangladesh (AIUB), Banani, Dhaka-1213, Bangladesh
Abstract This paper presents a novel design of a compact Ultra-wide band textile antenna which
operates from the frequency range of 2.8–14 GHz, covering the entire ultra-wide band
frequency range of 3.1–10.6 GHz, as approved by FCC. Hybrid design technique is applied to a simplified circular patch design and finally an octagonal shape is achieved
that exhibits ultra-wide band characteristics. The substrate of the designed antenna is made of jeans fabric (ɛr = 1.7) while patch and the ground plane is made of copper tape.
The dimension of the substrate is 42 × 34 mm2. A partial ground plane with a square
notch is placed at the back of the substrate. This antenna performance is also analyzed at six different bending angles. The characteristics, low profile, and compact size of the
proposed antenna depicts as a potential candidate for ultra-wide band applications. The
antenna design details and simulated results are presented by CST Microwave Studio.
Keywords: ultra-wide band, textile antenna, octagonal patch, partial ground, slot
RTECS (2014)© STM Journals 2014. All Rights Reserved
Recent Trends in Electronics & Communication Systems ISSN: 2393-8757 (online)
Volume 1, Issue 2
www.stmjournals.com
Study of Spectrum Sensing Techniques for OFDM-based
Cognitive Radio
Monika Tripathi* Department of Electronics, Madhav Institute of Technology and Science, Gwalior, India
Abstract Nowadays OFDM (Orthogonal Frequency Division Multiplexing) techniques are adopted
by many existing or progressing wireless communication standards. OFDM’s sensing and
spectrum shaping capabilities together with its flexibility and adaptivity make it the best transmission technology for CR system. Spectrum sensing helps to detect the spectrum
holes (unutilized bands of the spectrum) providing high spectral resolution capability.
Thus, a robust spectrum sensing algorithm for OFDM modulated signals is highly decide to implement CR when the primary signal uses OFDM modulation. Motivated by this
demand, a Time-Domain Symbol Cross-correlation based spectrum sensing algorithm (TDSC method) is presented in this paper. The algorithm makes use of the property that
the mean of the TDSC of two OFDM symbols is not zero if they have embedded the same
frequency-domain pilot tones. We propose a new decision statistic for the signal detection based on the special feature –Cyclic Prefix embedded in OFDM signal. Further, in this
paper we used to control the Transmit Power for cognitive radio. Different spectrum sensing techniques for OFDM based cognitive radio are discussed in this paper.
Keywords: Cognative Radio, OFDM, Spectrum Sensing, Energy Detection, Matched
Filter, Cyclostationary Feature Detection
RTECS (2014)© STM Journals 2014. All Rights Reserved
Recent Trends in Electronics & Communication Systems ISSN: 2393-8757 (online)
Volume 1, Issue 2
www.stmjournals.com
Survey Based Study of OFDM System and
PAPR Reduction Techniques
Kandikuppa Anusha 1*, Yashvant Dhiwer
2, Rakesh Mandal
3
1Deptt. of E &Tc, PCEM, Bhilai, C.G., India
2Communication Engg, SSGI, Bhilai, C.G., India
3Deptt. of E &Tc. Engg. SSGI, Bhilai, C.G., India
Abstract The need of Modern wireless communication is achieving high data transmission rate and its robustness against multipath fading and good spectral efficiency MIMO-OFDM system
is popular because it provides reliable communication and wide coverage. Orthogonal
Frequency Division Multiplexing is a multicarrier modulation technique which is prime choice for high data rate application. To improve performance of OFDM we use various
techniques such as channel estimation, signal detection, frequency offset estimation and correction, PAPR reduction (Peak-To-Average-Power-Ratio), Bit Error Rate Reduction
using equalization technique and MIMO techniques. MIMO (Multiple Input Multiple
Output) wireless communications systems employ multiple transmit and receiving antennas for the improvement in channel capacity. This paper describes the basic
introduction of OFDM, MIMO-OFDM system and explains the different channel estimation, optimization techniques and their utilization in communication systems.
Keywords: OFDM, MIMO, PAPR, ISI