Open Access   Article

Performance Analysis of Turbo Codes Using CRC and FC with OFDM

A.Vasuki 1 , K.Kavitha 2 , G.Sowndharya 3

1 Mechatronics Engineering, Kumaraguru College of Technology, Coimbatore, India.
2 Electronics and Communication Engineering, Kumaraguru College of Technology, Coimbatore, India.
3 Electronics and Communication Engineering, Kumaraguru College of Technology, Coimbatore, India.

Correspondence should be addressed to: avasuki@gmail.com.

Section:Research Paper, Product Type: Journal Paper
Volume-5 , Issue-12 , Page no. 23-28, Dec-2017

CrossRef-DOI:   https://doi.org/10.26438/ijcse/v5i12.2328

Online published on Dec 31, 2017

Copyright © A.Vasuki, K.Kavitha, G.Sowndharya . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citation

IEEE Style Citation: A.Vasuki, K.Kavitha, G.Sowndharya, “Performance Analysis of Turbo Codes Using CRC and FC with OFDM”, International Journal of Computer Sciences and Engineering, Vol.5, Issue.12, pp.23-28, 2017.

MLA Style Citation: A.Vasuki, K.Kavitha, G.Sowndharya "Performance Analysis of Turbo Codes Using CRC and FC with OFDM." International Journal of Computer Sciences and Engineering 5.12 (2017): 23-28.

APA Style Citation: A.Vasuki, K.Kavitha, G.Sowndharya, (2017). Performance Analysis of Turbo Codes Using CRC and FC with OFDM. International Journal of Computer Sciences and Engineering, 5(12), 23-28.

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Abstract

Long Term Evolution (LTE) is an evolving wireless communication standard that requires high data rate, higher bandwidth efficiency and better coverage. So, spectrally efficient techniques like Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output and Error Control Codes with high coding gain are constituents of LTE. OFDM partitions a channel with wide bandwidth into several channels with narrow bandwidth that are flat, in order to mitigate the effects of multipath fading and Inter Symbol Interference (ISI). Error control codes enhance reliable transmission over noisy fading channels. The objective of this work is to increase data rate and reduce bit error rate by combining OFDM and Turbo Codes. Bit error rate is further reduced by applying Cyclic Redundancy Check (CRC) and Flip and Check algorithm (FC) along with turbo codes. In this paper, MAP and MAX Log MAP algorithms have been applied in the turbo decoding process and their performance compared. The proposed algorithm has been implemented and simulated using MATLAB.

Key-Words / Index Term

Turbo Codes, MAP, MAX Log MAP, Cyclic Redundancy Check, Flip and Check, OFDM, LTE

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