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Crosstalk due to four-wave mixing (FWM) is the dominant nonlinear effect in long-haul multi-channel optical communication systems which can severely limit system performance. In this paper, we have simulated the effect of chromatic dispersion on FWM using equal and unequal channel spacing in terms of input/output spectrum, eye diagram and bit error rate. Results show that the effect of FWM reduces...
Wavelength division multiplexing (WDM) optical networks are attracting more and more attention because of their ability to provide increased capacity and flexibility. Optical add-drop multiplexer (OADM) become key components for add or drop wavelengths in high bit rate optical networks. Crosstalk in OADM degrades the performance of WDM system. In this article, we have developed a fiber Bragg-grating...
In this paper, a numerical method is presented to evaluate the bit error rate (BER) of different Orthogonal Space-Time Block Codes (OSTBCs) over Rayleigh fading channel for different transmission bit rate. The comparisons of Orthogonal Space-Time Block Codes are made with the equivalent uncoded Single-Input Single-Output (SISO) channel and uncoded space diversity. The result shows that a full rate...
Wavelength division multiplexing (WDM) in optical fiber networks has gained wide acceptance as a means to handle the ever-increasing bandwidth demands of network users. An optical add-drop multiplexer (OADM) is an important device to add or drop wavelengths and crosstalk in OADM degrades the performance of WDM system. In this article we have developed an analytical model to study the incoherent crosstalk...
In the MIMO-OFDM system, the carrier frequency offset and phase noise cause loss of orthogonality among subcarriers and leads to intercarrier interference (ICI). This paper considers ICI self-cancellation schemes using space frequency block code (SFBC) in MIMO-OFDM system. In this paper we have analytically derived expression for common phase error (CPE), ICI, carrier to interference (CIR) and BER...
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