DocumentCode :
147278
Title :
Performance of turbo coded MIMO-OFDM system for underwater communications
Author :
Nelson, I. ; Vishvaksenan, K.S. ; Rajendran, Venkatachalam
Author_Institution :
Electron. & Commun. Eng. Dept., SSN Coll. of Eng., Chennai, India
fYear :
2014
fDate :
3-5 April 2014
Firstpage :
1735
Lastpage :
1739
Abstract :
In this correspondence, we consider the performance of Multi-Input Multi-Output (MIMO) assisted multi-carrier (MC) modulated system for the transmission of the acoustic signal in underwater communications. In underwater communications, acoustic interference and ambient noise are the two major channel impairments. In our work, we consider turbo code as channel encoder and at the receiver, we employ iterative decoding algorithm to alleviate the effects of ambient noise and acoustic interference. We implement IFFT block at the transmitter and FFT block at the receiver to realize multi-carrier modulation. Particularly, we investigate the effects of eleven tap delay pertaining to shallow water model in the context of coded MIMO-OFDM system. At the receiver, we realize non-linear detector based on zero-forcing (ZF) algorithm. It is shown through simulation results that MIMO-OFDM system with ZF algorithm provides achievable bit error rate with less signal-to-noise ratio using iterative decoding algorithm..
Keywords :
MIMO communication; OFDM modulation; acoustic signal detection; acoustic signal processing; error statistics; iterative decoding; shallow water equations; turbo codes; underwater acoustic communication; IFFT block; ZF algorithm; acoustic interference; acoustic signal transmission; ambient noise; bit error rate; channel encoder; channel impairments; iterative decoding algorithm; multi-input multi-output; multicarrier modulated system; nonlinear detector; shallow water model; signal-to-noise ratio; turbo coded MIMO-OFDM system; underwater communications; zero-forcing algorithm; Antennas; Delays; Equations; Indexes; Mathematical model; Noise; OFDM; Minimum Mean Square Error (MMSE); Ordered Successive Interference cancellation (OSIC); Vertical Bell Laboratories Layered space-time architecture(VBLAST); Zero Forcing(ZF);
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.2014.6950143
Filename :
6950143
Link To Document :
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