[PDF] Top 20 Performance of OFDM based FSO Communication Systems using M ary PSK Modulation

... general the atmospheric turbulence is represented by Probability Density function since the phenomenon being random in nature. But atmospheric conditions like scattering, absorption and scintillation affect the ... See full document

... digital communication scheme design, the foremost objective is to receive data as analogous as the data sent from the ...system’s performance it is essential to examine the system in term of probability of ... See full document

... Wireless communication is an important development in the field of communication ...in FSO communication system is the multipath fading and frequency selective ...sideband modulation ... See full document

... show M-ary QAM OFDM-based system with Best Relay Selection the best-relays selection cooperative has BER better than the regular cooperative ...the performance gain between M- ... See full document

... level modulation- demodulation in communication systems for a high data rate low distance range ...applications. OFDM refers to both multiplexing and modulation technique to transmit ... See full document

... of OFDM based FSO system depends not only on the atmospheric condition, but also on the signal power of the ...The FSO can be classified based on the ambient condition as- indoor link ... See full document

... optical communication (FSO) proves to be very effective and effi- cient technology for wireless ...which modulation technique proves better for ...the performance of ASK and PSK ... See full document

... Abstract— OFDM technology promises to be a key technique for achieving the high data capacity and spectral efficiency requirements for wireless communication ...wireless communication system to send ... See full document

... wireless communication links ...antenna systems for use in frequency-selective fading ...MIMO systems in terms of BER for 16-PSK modulation ...error performance in frequency ... See full document

... digital communication systems and data storage ...block based code that can be presented as RS (n, k, t) over a Galois field GF (2 m ...contains m-bits (symbol size). The correlation of ... See full document

... wireless communication technology that uses line of sight (LOS) path propagating in a free air space to send the information between any two ...similar. FSO is very similar to optical fiber ... See full document

... wireless communication system. Designing an efficient wireless communication system requires trade-off between these two ...Index Modulation (OFDM-IM) has been introduced in the literature to ... See full document

... the modulation technique, increased spectral potency, nature of administration, higher combination with existing standards, inserted security Associate in Nursing an all "IP" ...network. OFDM ... See full document

... the OFDM system with pilot-based channel estimation is shown in ...of OFDM wireless communication ...of modulation M- PSK and M-QAM used in the ...in OFDM ... See full document

... wireless communication systems, bandwidth is a precious commodity, and service providers are continuously met with the challenge of accommodating more users within a limited allocated ...higher ... See full document

... Simulation of proposed work has done on Matlab Simulink. All the SUI channels have three delay taps and they can be modeled by Rayleigh or Rician fading channel. The results show the huge difference in the SER of both ... See full document

... the performance criterion is the best ...and performance of the OFDMA (Orthogonal Frequency Division Multiple Access) modulator and ...high performance FFT architecture for OFDM modulator and ... See full document

... MIMO systems to perform precoding (multi-layer beamforming), diversity coding (space- time coding), and spatial ...of using these MIMO techniques is higher data rate or longer transmits range without ... See full document

... every OFDM symbol [2]. Moreover, OFDM provides greater immunity to multi-path fading and impulse noise, and reduces the complexity of equalizers, while efficient hardware implementation can be realized ... See full document

... In this section, we examine the necessity of a preamble and CRC codes. The CRC codes are used to decrease error reception. There are two cases of error reception. One case is that transmitted packets deteriorated by ... See full document