International Journal of Emerging Trends in Engineering & Technology (IJETET)
Vol. 03, No. 02, 2015
ISSN No. 2248-9592
Frames analysis and Video creation with
C# by using
OFDM
System
Ms. Riya S Chopkar
PG Scholar, Dept. of Electronics Engineering
G.H.Raisoni College of Engineering, Nagpur (M.S), India
Dr. P. M. Daigavane
Head, Dept. of Electrical Engineering,
G.H.Raisoni College of Engineering, Nagpur (M.S), India.
Abstract-Here we are analyzing the frames of video, which is transmitted by OFDM system. Orthogonal frequency division
multiplexing (OFDM) technology is advance to improve wireless communication and high data rate and further improvement.
By OFDM system frames are transmit and receive using C# software. Video is recreated on receiver side using C# and analyze
by signal to noise ratio (SNS) and bit error rate (BER).
I. INTRODUCTION
Now a day the use of wireless communication is rapidly increasing and OFDM is the part of that communication.
OFDM (Orthogonal frequency division multiplexing) is the newer wireless technology used for high data rate
transmission, it is the method of encoding the digital data on multiple carrier frequency. By using OFDM video,
audio, image and many more is transmitting. For improving the quality of data some modulation schemes are used
like QAM, PSK and so on.
Fig. (a) OFDM block diagram
Because during data transmission noise is added, modulation scheme is used for analysing the data quality
through which modulation data quality is improve is analyse through signal to noise ratio and bit error rate by
computer simulation.fig.(a) show the basic block diagram of OFDM system.Mapper is the data base management
and processing system, guard insertion is used for avoiding the interference, FFT is used to convert time to
frequency.
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©IJETET
International Journal of Emerging Trends in Engineering & Technology (IJETET)
Vol. 03, No. 02, 2015
ISSN No. 2248-9592
II. PROBLEM DEFINATION
During frame transmission from OFDM transmitter to receiver some frames are skipping. To avoid this problem
IP binding is used to maintain the data. During transmission noise is add because of this quality of video is
degrade to avoid this problem filters are used which improve frame quality as well as video quality.
III. PROPOSED WORK
Whole processor is followed by C# software, first the video is capture and make the frames of the
Fig. (b) Block diagram
Video by C# software.PSK and QAM modulation scheme are to improve the quality of data, first PSK is used for
analyses the quality and then QAM the compare both the quality, for analyses which one is better. Frames are
transmitted by OFDM transmitter and when it receives, they are in binary format. By using C# frames are
recreating in original format. During receiving noise is added which degrade the quality of frames by using filter
frames quality are improve.
IV. OFDM Hardware
Fig. 1 Transmitter
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©IJETET
International Journal of Emerging Trends in Engineering & Technology (IJETET)
Vol. 03, No. 02, 2015
ISSN No. 2248-9592
Fig.2 Receiver
Hardware part consists of various components like rectifier, transformer, led, Rs 232 and so on. For encoding
digital data OFDM is used on multiple carrier frequencies. To convert the electrical energy from one circuit to
another circuit without change in frequency and power transformer used.. These components are used in
transmitter and receiver part of hardware.
V. OUTPUT
Below window show the video capturing by using C# software. Numbers of frames are capture is also shown.
Fig. video capturing
Below window show the specific location of the frames, folder is creating for this video. The numbers of frames
captures are also shown,
Fig. video location
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©IJETET
International Journal of Emerging Trends in Engineering & Technology (IJETET)
Vol. 03, No. 02, 2015
ISSN No. 2248-9592
Fig. live video capture
53 frames are capture which is shown in above fig. Time duration is also shown. In 10 sec 53 frames are capture.
Fig. Frames generation
Above fig. show the frame generation of video. These are transmitted through OFDM transmitter in the binary
form and receive also in binary form. This frame generation method is done by using c# and C++.
Fig. Frames in binary format
VI. CONCLUSION
As per the increasing demand for increased channel capacity in wireless and mobile communications has been
rapidly increasing. For recovered data quality is an important factor for communication. For improving the quality
of the video or frames two different modulation schemes are used like PSK and QAM. We evaluate the
performance of video quality using C # simulations. We analyse the interference problem by evaluating signal to
noise ratio and bit error rate.
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©IJETET
International Journal of Emerging Trends in Engineering & Technology (IJETET)
Vol. 03, No. 02, 2015
ISSN No. 2248-9592
REFERENCES
1]Li Fu, Songlin Sun, Xiaojun Jing, Hai Huang” ANALYSIS OF PILOT PATTERNS AND CHANNEL ESTIMATION FOR DVB-T2”
Beijing University of Posts and Telecommunications, Beijing, China Proceedings of IC-NIDC2010
2].Fatimaalzhra Salman and John Cosmas, Yue Zhang” Modelling and Performance of a DVB-T2 Channel Estimator and Equaliser for
Different Pilot Patterns” Brunel University
London, UK.
3] Spiridon Zettas, Pavlos I. Lazaridis, Zaharias D. Zaharis, Stylianos Kasampalis, and John Cosmas,
Senior Member, IEEE” A Pilot Aided Averaging Channel Estimator for DVB-T2” mm 13-48 IEEE BMSB 2013
4] Zain ul Abidin Jaffri1, Muhammad Tahir2, Sundas Rauf3” Evaluating the performance of OFDM transceiver for image transfer using
16PSK and 16QAM modulation schemes” International Journal of Scientific Engineering and Technology (ISSN : 2277-1581)
Volume No.3, Issue No.3, pp : 222-226 1 march 2014
OFDM Systems” IEEE COMMUNICATIONS LETTERS, VOL. 14, NO. 9, SEPTEMBER 2010
5] K. Kwak, S. Lee, J. Kim, and D. Hong, “A new DFT-based channel estimation approach for OFDM with virtual subcarriers by leakage
estimation,” IEEE Trans. Commun., vol. 7, no. 8, pp. 2004–2008, Jun. 2008.
6] J. W. Kang, Y. Whang, H. Y. Lee, and K. S. Kim, “Optimal pilot sequence design for multi-cell MIMO-OFDM systems,” IEEE Trans.
Wireless Commun., vol. 10, no. 10, pp. 3354–3367, Oct. 2011.
7] Faculty Advisor: Dr. Mary Ann Ingram Guillermo Acosta” Smart Antenna Research Laboratory” August, 2000
8] http://www.cisco.com
9] P.M. Ebert, S. B. Weinstein, (1971) “Data Transmission by Frequency Division Multiplexing Using the Discrete Fourier Transform”, IEEE
Transactions on Communication Technology Vol. 19, No. 5, pp628-634
Riya S Chopkar: she had received a Bachelor of Engineering Degree in Electronics
Engineering from the G.H. Raisoni College of Engineering from Nagpur University in
2013. Currently pursuing M.Tech in Electronics from the Raisoni College of
Engineering(GHRCE), Nagpur 2015. Presently working on “Performance improvement
of Noise Contained Video to the Standard Video using Channel Estimation by OFDM
System”.
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