Title :
An analysis of MIMO-OFDM for underwater communications
Author :
Trung, Ha Duyen ; Van Duc, Nguyen
Author_Institution :
Sch. of Electron. & Telecommun., Hanoi Univ. of Sci. & Technol., Hanoi, Vietnam
Abstract :
Underwater wireless channel is characterized by the limitation of bandwidth, inter-symbol inference (ISI) and the influence of the Doppler effect, which cause challenges to high-rate efficiency transmission over long channel. In this paper, we investigate multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) system using advantages of MIMO and OFDM techniques to analyze BER performances of underwater communications. The influences of modulation schemes such as M-PSK, M-QAM, carrier frequency and the Doppler effect to quality of the received signal are taken into account. Computer simulations show the system performance with M-QAM modulation, MMSE equalization and frequency of several ten kHz has the best results compared with that of M-PSK modulation and ZF equalization.
Keywords :
MIMO communication; OFDM modulation; channel estimation; equalisers; least mean squares methods; marine communication; phase shift keying; quadrature amplitude modulation; Doppler effect; M-PSK; M-QAM; MIMO OFDM; MMSE equalization; bandwidth limitation; carrier frequency; intersymbol inference; multiple input multiple output orthogonal frequency division multiplexing system; underwater communication; underwater wireless channel; Bit error rate; Doppler effect; Equalizers; Modulation; OFDM; Receivers; Transmitting antennas; Doppler effect; MIMO-OFDM; carrier frequency; modulation schemes; underwater communications;
Conference_Titel :
Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2011 3rd International Congress on
Conference_Location :
Budapest
Print_ISBN :
978-1-4577-0682-0
