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Ber Performance Analytical Approach for Conventional DFT and DWT for Different Modulation Techniques using SUI Channel in OFDM

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2016
Thakur Pushpendra Singh, Navendu Nitin, A. K. Jaiswal

Thakur Pushpendra Singh, Navendu Nitin and A K Jaiswal. Ber Performance Analytical Approach for Conventional DFT and DWT for Different Modulation Techniques using SUI Channel in OFDM. International Journal of Computer Applications 149(10):15-20, September 2016. BibTeX

	author = {Thakur Pushpendra Singh and Navendu Nitin and A. K. Jaiswal},
	title = {Ber Performance Analytical Approach for Conventional DFT and DWT for Different Modulation Techniques using SUI Channel in OFDM},
	journal = {International Journal of Computer Applications},
	issue_date = {September 2016},
	volume = {149},
	number = {10},
	month = {Sep},
	year = {2016},
	issn = {0975-8887},
	pages = {15-20},
	numpages = {6},
	url = {},
	doi = {10.5120/ijca2016911602},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}


Orthogonal Frequency Division Multiplexing (OFDM) is of the strong prospects as a future wireless communication system. Improved spectral efficiency has been found in OFDM based on DFT, has a good orthogonality but inter symbol interference (ISI) and inter carrier interference (ICI) degrade the performance. ISI and ICI can be improved by using cyclic prefix (CP). About 20% of bandwidth is consumed by CP. For preferable performance DWT based OFDM gives better outlook than DFT based OFDM.. Three advantages of using DWT are desirable signal to noise ratio, desirable data rate and below per power requirement are given by wavelet based OFDM. Comparison of performances of BER using practical channel model known as Stanford University Interim (SUI) is given in this paper. Consideration to QPSK, 4QAM, 8QAM, 16-QAM, 32QAM, 64-QAM, 128QAM and 256 QAM has been given in modeling. Channel condition and modulation are the pre- cursors given for the selection of particular performance.


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OFDM, MIMO, BER, Cyclic Prefix, DFT, DWT, SUI Channel.