IJBTT

Channel Estimation by using Pseudo-Pilot in OFDM System

	International Journal of Engineering Trends and Technology (IJETT)
	© 2017 by IJETT Journal
	Volume-45 Number-7
	Year of Publication : 2017
	Authors : Akshay Rana, Mamta Arora
	DOI :  10.14445/22315381/IJETT-V45P265

Citation 

Akshay Rana, Mamta Arora "Java Based Video Surveillance System Using Frame Separation In Real-Time", International Journal of Engineering Trends and Technology (IJETT), V45(7),313-316 March 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
The aim of this paper is to share novel paradigm of channel estimation for orthogonal frequency division multiplexing (OFDM) systems. OFDM is used to improve spectral efficiency and spatial diversity in wireless communications systems. This paper provides a review of channel estimation techniques (blind and pilot-aided) and its performance on data-aided channel. After comparison with known techniques the blind channel estimation perform better as compare to pilot aided system. In addition pilot cost overhead in wireless communications system. By evaluate pseudo-pilot concept, overhead cost overcome which offer identical performances as conventional pilot system

 References

[1] Y. Li and G. L. Stüber, Orthogonal Frequency Division Multiplexing for Wireless Communications. Atlanta, GA: Georgia Inst. Technol., 2006.
[2] S. Thoen, L. Van der Perre, M. Engels, and H. De Man,“Adaptive loading for OFDM/SDMA-based wireless networks,” IEEE Trans. Commun., vol. 50, no. 11, pp. 1798–1810, Nov. 2002.
[3] B. Muquet and M. de Courville, “Blind and semiblind channel identification methods using second-order statistics for OFDM systems,” in Proc. IEEE Int. Conf. Acoust., Speech, Signal Process., Mar. 1999, vol. 5, pp. 2745–2748.
[4] S. Chen and S. McLaughlin, “Blind channel identification based on higher order cumulant fitting using genetic algorithms,” in Proc. IEEE Signal Process. Workshop Higher Order Stat., Jul.1997, pp. 184–188.
[5] S. Alireza Banani and R.G. Vaughan, “OFDM With Iterative Blind Channel Estimation” IEEE trans. Vol.59,No.9,Nov 2010.
[6] N. Chotikakamthorn and H. Suzuki, “On identifiability of OFDM blindchannel estimation,” in Proc. Veh. Technol. Conf., Sep. 1999, vol. 4, pp. 2358–2361.
[7] M. C. Necker and G. L. Stüber, “Totally blind channel estimation for OFDM on fast varying mobile radio channels,” IEEE Trans. Wireless Commun., vol. 3, no. 5, pp. 1514 1525, Sep2004.
[8] M.K. Ozdemir, H. Arslan, ?Channel Estimation for Wireless OFDM Systems?, IEEE Communications Surveys, 2nd Quarter 2007, Vol. 9, No. 2, pp. 18-48.
[9] G.Y. Li, ?Simplified Channel Estimation for OFDM Systems with Multiple Transmit Antennas?, IEEE Transactions on Wireless Communications, January 2002, Vol. 1, No. 1, pp. 67-75.
[10] V. Mathai and K. M. Sagayam, “Comparison And Analysis Of Channel Estimation Algorithms In OFDM Systems”, International Journal Of Scientific & Technology Research, vol. 2, no. 3, pp. 76- 80, 2013
[11] Z. Yang, X. Wang et.al, ?A Sequential Monte Carlo Blind Receiver for OFDM Systems in Frequency-Selective Fading Channels?, IEEE Transactions on Signal Processing, 2005, Vol. 50, No. 2, pp. 271.
[12] Y.Ma, “Pseudo-Pilot: A Novel Paradigm of Channel Estimation” IEEE SIGNAL PROCESSING LETTERS, VOL. 23, NO. 6, JUNE 2016.
[13] T. Hwang and C. Yang, “OFDM and Its Wireless Applications: A Survey,” IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 58, NO. 4, MAY 2009.
[14] M. Imani, “A new method for channel estimation in orthogonal frequency division multiplexing (OFDM) systems using reduced pilots”majlesi journal of Electrical Engineering, vol. 8, no. 3, September 2014.
[15] Z. Adeyemo, A. Fawole, A. Olukunle, “Comparative Analysis of CMA and MMSE in MIMO-OFDM System”, Innovative Systems Design and Engineering, vol. 7, no. 5, pp. 35-42, 2016
[16] A. Lozano and N. Jindal, “Optimum pilot overhead in wireless communication: A unified treatment of continuous and block-fading channels,”in Proc. Eur.Wireless Conf., Lucca, Italy, Apr. 2010, pp. 725–732.
[17] Akash Kumar Shrivas, “A comparative analysis of LS and MMSE Channel Estimation Technique for MIMO-OFDM system”, International Journal for Innovative Research in Science & Technology, vol. 1, no. 8, pp. 44-48,

Keywords
Blind channel estimation, channel estimation, intersymbol, interference, LS, MMSE, OFDM, orthogonality, pseudo-pilot