Soft Q-factor in optical communication systems

Optical Signal-to-Noise Ratio and the Q-Factor in Fiber-Optic Communication Systems

Soft decoding in optical systems

We consider the application of concatenated codes with interleaver and iterative decoding to optical communication systems. We show how to obtain the optimum log-likelihood ratio to be provided to the soft decoder in the optical channel environment, and compare the performance of a decoder using it with the one employing a Gaussian approximation of the optical channel. Simulation results refer ...

Wireless Optical Communication Systems WIRELESS OPTICAL COMMUNICATION SYSTEMS

To Study the Effect of BER and Q-factor in Intersatellite Optical Wireless Communication System

The system performance plays a great role in analyzing the characteristics of optical wireless communication link. This paper describes the effect of BIT ERROR RATIO and QUALITY FACTOR in communication system. The effect of diameter antennae with received power and distance is also analyzed in this paper. The value of antennae diameter varies from 20 cm to 40 cm and distance between satellites ...

Optical communication multibus systems

Abstract In this paper we present optical communication multibus system including: physical topology, logical topology, structure of central control unit (CCU). We describe the task of CCU: analyze the state of logical buses, topology reconfiguration, system structures clustering, unexpected events handling, statistic gathering, etc. In this paper we present synthesis of core system network bas...