End-to-End Performance Analysis of Analog Coherent Optical Satellite Feeder Links

Optical feeder links (OFLs) benefit from the vast amount of bandwidth available in the THz-regime of the electro-magnetic spectrum, and could enable future terabit-per-second satellite systems. This study assesses the end-to-end performance of analog coherent OFLs for digital video broadcasting (DVB) applications, employing phase modulation (PM)...

Beam multiplexing for satellite communication optical feeder links

Optical satellite communication is growing fast and among various applications it requires higher throughput optical feeder links. Optical feeder links for satellite communication necessitate very high data throughput, up to 1 Terabit/s and beyond. Amongst several multiplexing strategies, dense wavelength division holds a key position to enable...

Model-aided Feature Extraction

The usage of radar system modeling in the radar resource manager (RRM) or in the resource manager of a suite of sensors is discussed. Multiple ways to monitor the validity of the models are identified. The capability of such models to predict estimated elevation angle under anomalous propagation conditions has been investigated. Satisfactory...

Modeling alien-line impedance mismatch in wideband vectored wireline systems

Sudden changes of channel coefficients in a wideband vectored wireline system (such as G.fast) due to changes in the terminating impedance of lines outside the vectored group can seriously degrade stability and throughput. This letter presents a model that predicts the impact of termination mismatch based exclusively on crosstalk data for the...

A Component Model for Cable System Calculations

Unfortunately, no method yet exists for system calculations to support cable engineers with the technical challenge of increasing digital loads when confronted with ever-increasing capacity demands from commercial departments. This article introduces a reliable method of cable system calculations.

DVB-C2 Deployment: 4096 QAM or Not?

For many operators, the deployment of DVB-C2 could be instrumental in solving network capacity shortages. Applying the 4096QAM modulation, DVB-C2 provides a throughput of more than 80Mbps per 8MHz channel. However, DVB-C2 4096QAM requires a high signal level and, therefore, operators must know whether they can apply a suffi ciently high DVB-C2...

New HFC Optimization Paradigm for the Digital Era

A cost-effective way to expand the capacity of HFC networks is a most efficient use of the amplifier power. The maximum output level of components is limited by the non-linear behaviour. In the current practice, 2nd (CSO) and 3rd (CTB) order non-linear behaviour is thought to limit the performance, and thus the maximum signal load. Studies of...

Covert Underwater Communications with Multiband OFDM

We consider the use of orthogonal frequency division multiplexing (OFDM) for covert acoustic telemetry. To reduce the complexity of the receiver we use a multiband approach, modulating each band by OFDM. The system has been tested at sea in a highly time-varying environment. A total bandwidth of 3.6 kHz was divided in 16 subbands. Data rates of...