Survey on Channel Estimation of the Orthogonal Frequency Division Multiplexing
Aswani Lalitha1, G. Harinatha Reddy2

1Aswani Lalitha, Research Scholar, Department of ECE, JNTU Ananthapur (Andhra Pradesh), India.
2Dr. G. Harinatha Reddy, Professor & HOD,  Department of ECE, NBKR Institute of Science and Technology, (Andhra Pradesh), India.
Manuscript received on 24 April 2019 | Revised Manuscript received on 06 May 2019 | Manuscript Published on 17 May 2019 | PP: 312-318 | Volume-7 Issue-6S4 April 2019 | Retrieval Number: F10590476S419/2019©BEIESP
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Abstract: Orthogonal Frequency Division Multiplexing (OFDM) system is significantly used in several communication devices such as smart phones, television, radio, and so on. Nowadays, OFDM is the most important system for effective communication in wireless domain. In communication systems, the Channel Estimation (CE) plays a major role in finding the characteristics of the channel based on the received data value. In order to manage the communication data, most of the researchers focused on the CE by using different techniques like Minimum Mean Square (MMSE), Least Square (LS), blind, semi-blind and also developed new methodologies for the OFDM. This survey paper summarizes previous research works based on the CE algorithms of OFDM and also examined the major limitations of those techniques. This paper will help the researchers about the present drawbacks in the OFDM system.
Keywords: Channel Estimation, Communication System, Internet, Orthogonal Frequency Division Multiplexing.
Scope of the Article: Frequency Selective Surface