Abstract
Abstract In this paper, we analyzed Alamouti based the MIMO-OFDM system in an underwater vertical communication channels. These in consideration both the transmission loss the multipath loss which is suitable forunderwater environment are necessary method to improve the efficiency and communication performance in underwater communication. This paper is modeled in an environment that caused the error, considered each simulatedthe multi-path loss, transmission loss, the Doppler spread in order to implement a practical communication environment and simulated through the MIMO-OFDM system of Alamouti STBC method. The MIMO-OFDM system 2Tx-2Rx of Alamouti STBC scheme in underwater vertical communication system is obtained about 3 ∼ 5 dB gainas compare with its 2Tx-1Rx scheme with reference BER. Keywords : Alamouti STBC, MIMO-OFDM, underwater vertical communication channels 본 논문은 2009년도 정부(미래창조과학부)의 재원으로 한국연구재단의 지원을 받아 수행된 해외우수연구기관 유치사업 연구임(2009-00422) * Corresponding Author : Byung-Lok Cho(Sunchon Univ.) Tel: +82-61-750-3573 email: blcho@sunchon.ac.krReceived May 26, 2015 Accepted August 6, 2015Revised (1st July 22, 2015, 2nd July 29, 2015)Published August 31, 2015
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