Title :
Joint ICI and IBI cancelation for underwater acoustic MIMO-OFDM systems
Author :
Beheshti, M. ; Omidi, M.J. ; Doost-Hoseini, A.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran
Abstract :
A time-domain equalizer (TEQ) is proposed for MIMO-OFDM transmission in underwater acoustic (UWA) channels that simultaneously exhibit large delay and doppler spreads. The aim of the equalizer is to jointly mitigate the intercarrier interference (ICI) and interblock interference (IBI). In this paper, the well known basis expansion model (BEM) is used to describe the UWA channel. Then, the equalizer is derived based on maximizing the signal-to-interference-plus-noise-ratio (SINR). The performance of the proposed approach is demonstrated by numerical simulations. Also, a previously proposed frequency-domain equalizer (FEQ) for communication over doubly selective radio channels is applied to UWA channel and its performance is compared to that of the proposed TEQ.
Keywords :
Doppler effect; MIMO communication; OFDM modulation; interference suppression; numerical analysis; underwater acoustic communication; Doppler spreads; MIMO-OFDM transmission; basis expansion model; doubly selective radio channels; frequency-domain equalizer; interblock interference cancellation; intercarrier interference cancellation; numerical simulations; signal-to-interference-plus-noise-ratio; time-domain equalizer; underwater acoustic channels; MIMO-OFDM; Underwater acoustic channel; basis expansion model; equalization; interblock interference (IBI); intercarrier interference (ICI);
Conference_Titel :
Electrical Engineering (ICEE), 2011 19th Iranian Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4577-0730-8
