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In dynamic-traffic Wavelength Division Multiplexing (WDM) networks, it is desirable to guarantee each optical circuit a minimum Optical Signal-to-Noise Ratio (OSNR) throughout the circuit's entire lifetime. The objective of this paper is to increase such guaranteed OSNR, which in turn enables bandwidth-efficient modulation formats to be applied to the circuit signals. The guaranteed OSNR is improved...
In this paper, we address the waveform optimization problem for improving the detection performance of MIMO-OFDM radar based STAP in the complex environment. Under the maximizing the output signal-to-interference-and-noise-ratio (SINR) criterion, the waveform optimization problem for improving the detection performance of STAP is derived, which is subjected to the constant modulus constraint. To tackle...
The objective of this study is to exploit the existing trade-off between the fiber link wavelength count and achievable circuit optical signal-to-noise ratio (OSNR) in Wavelength Divi- sion Multiplexing (WDM) networks. Each fiber link is assigned a specific OSNR-driven Spectrum Assignment (OSA) constraint, defined as the maximum number of active wavelengths the link is allowed to concurrently provision...
Spectrum sensing is a fundamental functionality for cognitive radio networks to detect spectrum resource status and to provide the opportunity for the cognitive user to use the under-utilized frequency resource without causing harmful interference to primary user. Energy detection, which is the most widely used in Cognitive Radio system, belongs to a kind of crude detection method and is not sensitive...
Software Defined Networking (SDN) is enabling wavelength-division multiplexed (WDM) networks to be programmable down to individual components. While taking into account typical gain and noise figure profiles of erbium-doped fiber amplifier (EDFA) components, the authors consider a number of signal power control strategies and compare their performance in terms of achievable lightpath optical signal-to-noise...
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