Evaluation of Wavelength Division Multiplexing System using Different Modulation Formats

Quadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions

This paper proposes an analytical model for evaluating the performance of dense wavelength division multiplexing (DWDM) for all optical orthogonal frequency division multiplexing (AO-OFDM) optical wireless channel. The investigated performance for proposed system is evaluated for the parameters  bit error rate (BER) and Q factor .The constellation diagrams, and bit error rate (BER) of the recei...

Advanced Modulation Formats for Ultra-Dense Wavelength Division Multiplexing

An Efficient Hierarchical Modulation based Orthogonal Frequency Division Multiplexing Transmission Scheme for Digital Video Broadcasting

Due to the increase of users the efficient usage of spectrum plays an important role in digital terrestrial television networks. In digital video broadcasting, local and global content are transmitted by single frequency network and multifrequency network respectively. Multifrequency network support transmission of global content and it consumes large spectrum. Similarly local content are well ...

Investigation of DWDM System for Different Modulation Formats

In this paper, we investigated the 96 × 10 Gbps DWDM system with the interval of 100 GHz for different modulation and further compare the performances of these formats in the term of Quality factor and eye closure. It is observed that non-return to zero provide better results amogst other. Further, we covered 190 Km of single span distance using this system with NRZ modulation format.

Investigation of Cross-Phase Modulation in WDM Systems with AM-PSK Modulation Formats

We investigate the impact of cross-phase modulation on optical AM-PSK modulation formats, namely duobinary, PSBT and dicode, as function of channel wavelength separation and channel power.