The concurrent effects of clipping distortion and frequency chirping, on directly modulated laser sources in cable television sub-carrier multiplexed systems, is analysed and discussed. The numerical model, which is proposed in this paper for the first time, allows the physical mechanisms of the laser diode to be taken into account. Simulation results show the impact of both the considered effects on the system performance, in terms of three distortion parameters: Composite Second Order (CSO), Composite Triple Beat (CTB) and Non-Linear Distortions (NLD). Taking into account all the effects influencing the performance, the reported method can be favourably used for the design of analog CATV distribution systems.
Abstract-It is well know that jamming i cost attack method against GNSS-based appli years these types of attacks have increased s the availability of GPS jammers that can be example, on the internet and due to the consta GNSS-based applications . Usually a jamming in-car jammer, is a quite simple electronic de single frequency tone or some type of chirp sig signal can be considered as an instantaneous can be mitigated with very simple processin Time Fourier Transform. These considera development of an equipment able to reduce harmful signals over a generic GNSS receiver t Defined Radio (SDR) equipment. In thi introduction to the problem is presented and mitigation technique is shown along with some in-car jammers.
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