Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM) in Underwater Optical Communication
摘要
In recent development in underwater communication, OFDM system plays a vital role. One among of those OFDM systems are ACO-OFDM technique. Underwater communication systems have become increasingly important in recent years, with a focus on wireless networks in response to the growing demand for ocean data mining. This has recently emerged for both high and moderate turbulence as a viable wireless carrier choice for signal transmission. To reduced inter symbol interference (ISI) and severe signal attenuation, advanced modulation techniques such as OFDM’s are used. This project will investigate two optical wireless orthogonal frequency techniques, ACO-OFDM and DCO-OFDM. The performance of ACO-OFDM and DCO-OFDM with and without turbulences will be compared. The examination of BER vs SNR of ACO-OFDM and DCO-OFDM for the condition of 4-QAM modulation will be used to compare these two techniques. In this work, the Monte-Carlo ray tracking system will be used for simulating the free impulse response and route loss using the simulation environment provided by the MATLAB technical computing language.