Paper Info
Title
Image transmission over Gilbert-Elliot and ITU fading channels using DVB-T2 channel coding and QPSK-OFDM
Abstract
In this work, a concatenated forward error correction (FEC) scheme together with Orthogonal Frequency Division Multiplexing (OFDM) have been used for effective transmission of data/images over additive and fading channels. With a Bose Chaudhuri Hocquenghem (BCH) code as the outer code and a Low Density Parity Check (LDPC) code as the inner code, the transmission has been simulated over both the Gilbert-Elliot and ITU Rayleigh fading channels. The FEC parameters assumed throughout the simulations were obtained from the DVB-T2 standard and the Base Band (BB) frames were created by making use of shortening and zero-padding concepts. The results which have been presented in terms of BER and psycho-visual performances show the resilience of the FEC schemes and OFDM to channel impairments. The BER performances attained over the Gilbert-Elliot Channel (a channel that introduces burst errors when in the bad state) using LDPC only and BCH-LDPC concatenated coding indicated that the outer BCH coding will start to achieve a much lower BER after an SNR of 5 dB. Over the ITU-A Rayleigh fading channel it was observed that the performance increment due to the outer BCH encoder only become apparent after 6 dB when compared to the rate ¼ LDPC only coded system BER performance. Over the Gilbert-Elliot channel a BCH-LDPC coded QPSK-OFDM system would provide a BER of 3×10-4 at 6 dB while the same BER for the ITU Vehicular-A channel was possible at 6.6 dB.
Year
DOI
Venue
2012
10.1109/SIU.2012.6204548
Signal Processing and Communications Applications Conference
Keywords
Field
DocType
BCH codes,OFDM modulation,Rayleigh channels,channel coding,data communication,digital video broadcasting,forward error correction,parity check codes,visual communication,BCH codes,BER,Bose Chaudhuri Hocquenghem code,DVB-T2 channel coding,Gilbert-Elliot channels,ITU Rayleigh fading channels,ITU Vehicular-A channel,LDPC,OFDM,QPSK,additive channels,data transmission,digital video broadcasting,forward error correction,image transmission,low density parity check code,orthogonal frequency division multiplexing,quadrature phase shift keying
Forward error correction,Rayleigh fading,Fading,Low-density parity-check code,Computer science,Computer network,BCH code,Artificial intelligence,Bit error rate,Concatenated error correction code,Pattern recognition,Algorithm,Orthogonal frequency-division multiplexing
Conference
ISBN
Citations 
PageRank 
978-1-4673-0054-4
0
0.34
References 
Authors
2
2
Name
Order
Citations
PageRank
Edmond Nurellari1233.88
Erhan A. Ince200.34