[PDF] Top 20 SPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION

... telecommunication, Free Space Optics [FSO] provides an optical communication technology which uses light energy to transmit the information from one point to another ...the optical ... See full document

... years MIMO has drawn significant attention of researchers in the field of wireless ...coding Techniques which are used to improve reliability is insufficient to meet the requirements of modern multimedia ... See full document

... In FSO communication system, optical channel attenuation occurs mainly by scattering and absorption events caused by fog, snow, rain, smoke and dust. The main challenge is a fog which is formed by the ... See full document

... forms spatial diversity ...mathematically. MIMO, combined with OFDM is used for Long Term Evolution (LTE)[7,8] standards and makes 4G more reliable, fast and ... See full document

... through spatial multiplexing, ...a MIMO channel equals the minimum of the number of transmit antennas and the number of receive antennas, ...The spatial multiplexing gain increases ... See full document

... FSO communication system depends upon number of ...wavelength, optical power, transmission bandwidth, divergence angle and optical loss on the transmitter and bit error rate (BER), receiver lens ... See full document

... of free-space optical (FSO) communication as a viable approach for terrestrial short range access ...FSO communication systems are the rising demands for higher bandwidth and ... See full document

... wireless communication systems are required to provide higher data rates and reliable ...through diversity and the achievable higher data rate through spatial ...In MIMO system the information ... See full document

... in free space optical communication systems are rainfall and atmospheric ...for free-space communication links with spatial diversity and Gaussian-Schell ... See full document

... Selective scattering occurs when certain particles are more effective at scattering of a particular wavelength of light. Air molecules, like oxygen and nitrogen for example, are small in size and thus more effective at ... See full document

... Atmospheric communication systems employing laser diode as transmitters and photodiodes as receivers is known as Free-space optical (FSO) ...wired communication, because of which it can ... See full document

... The pin photodiode consists of p region and n regions separated by a lightly n-doped intrinsic I region. When an incident photon has energy, the photon can give up its energy and excite an electron. This generates ... See full document

... of Free Space Optical Communication system, for different temperature conditions at moderate atmospheric ...FSO communication system are Bit Error Rate and Signal to Noise ratio are ... See full document

... a communication system is through the use of forward-error correction ...of communication channels, little has been done so far to investigate the benefits of FEC on an underwater FSO ... See full document

... The simulation of this work is carried out for various values of M (the number of symbols on the carrier) in the M-ary modulation. Two different modulations, PSK and QAM, are considered here. As is conventional, the ... See full document

... In this method, optical carriers are used to place analog Radio Frequency signals and then transmitted through optical fiber cables having high capacity.. In optical fiber transmitter mo[r] ... See full document

... Recently, fiber to the building (FTTB), fiber to the office (FTTO), fiber to the home (FTTH), and fiber to the desk (FTTD) offer “the last mile” solution based on optical access network for different broadband ... See full document

... As we can see that we have checked wavelength dependency of free space optical link for different wavelengths. According to Kruise law higher wavelengths undergo less attenuation and this fact is ... See full document

... first space time coding schemes developed for the MIMO systems which take advantage out of the added diversity of the space ...this diversity to get a better bit error ...Alamouti ... See full document

... fiber, Free Space Optics (FSO) uses lasers to transmit data, but instead of enclosing the data stream in a glass fiber, it is transmitted through the ...air. Free Space Optics (FSO) works on ... See full document