Race among error control codes in OFDM - role of modulation techniques

Author

Praveenkumar, Padmapriya ; Thenmozhi, K. ; Ramya, R. ; Kavitha, B.C. ; Amirtharajan, Rengarajan

Author_Institution

Sch. of EEE, SASTRA Univ., Thirumalaisamudram, India

fYear

2014

fDate

3-5 April 2014

Firstpage

237

Lastpage

241

Abstract

This paper gives an insight on, error control codes, where Low Density Parity Check (LDPC) codes or turbo codes are used to encode the data stream to tolerate channel errors and triple encryption is done to prevent un-authorization before passing the data over Orthogonal Frequency Division Multiplexing (OFDM) system. The system adopts diverse modulation schemes like Binary Phase Shift Keying(BPSK), Quadrature Phase Shift Keying(QPSK) and Quadrature Amplitude Modulation(QAM) using Additive White Gaussian Noise (AWGN) channel. The comparative analysis of LDPC over turbo codes is done and Bit Error Rate(BER) Vs Eb/No values are plotted and correlation values are computed after encryption.

Keywords

AWGN channels; OFDM modulation; cryptography; data communication; error correction codes; error statistics; parity check codes; quadrature amplitude modulation; quadrature phase shift keying; turbo codes; AWGN channel; BER; BPSK; LDPC codes; OFDM system; QAM; QPSK; additive white Gaussian noise channel; binary phase shift keying; bit error rate; channel errors; data stream; diverse modulation schemes; error control codes; low density parity check codes; modulation techniques; orthogonal frequency division multiplexing system; quadrature amplitude modulation; quadrature phase shift keying; turbo codes; Frequency division multiplexing; Frequency modulation; OFDM; Parity check codes; Robots; Encryption; LDPC; OFDM; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing (ICCSP), 2014 International Conference on

Conference_Location

Melmaruvathur

Print_ISBN

978-1-4799-3357-0

Type

conf

DOI

10.1109/ICCSP.2014.6949836

Filename

6949836