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The top level systems engineering of a digitally beam formed phased array for high throughput satellites is described. The focus of this work is on demonstrating that a viable concept exists by partitioning the system and showing a technology path for the subsystems. The system design is supported by trade studies which justify technology choices. Also, applicable industry standards for digital interfaces...
Mobile Ad hoc network comprises of many nodes which interact with each other through wireless links. It is infrastructure less in nature, due to which attackers can easily attack on the network from any side. There are many attacks which ruin the communication among the nodes of network. Among those attacks there is a Sybil attack that causes severe hazards to the network. Sybil attack is an attack...
In this paper, we propose a structure of a multichannel downstream receiver supporting four downstream channel bonding in hybrid fiber coax (HFC) networks. In addition, we show the implementation and measurement results. The structure we prupose and implement consists of a radio frequency (RF) tuner and multichannel downstream receiver, which consists of a digital filter bank and four downstream demodulators...
A popular way to exploit high level programming languages in FPGA designs is to use a soft-core with accompanying software development tools. However, a common shortcoming with the current soft-core offerings is their limited software execution capability: the required performance for the implementation can be often reached only with instruction set extensions. In this paper, we propose and evaluate...
Current emerging reconfigurable coarse grained processors are gaining more popularity, as they introduce a new way for more dynamicity similar to FPGA and tend to achieve the performance of application specific hardware. An adaptive architecture can face the diversity of applications dynamically in the hardware without the need of any software manipulation. However the need for more flexibility to...
Microwave radiometers detecting geophysical parameters are susceptible to radio-frequency interference (RFI) from anthropogenic sources. The kurtosis statistic can be a powerful means of identifying some types of low-power RFI, as thermal noise has a distinct kurtosis value of three, while thermal noise contaminated even with low-power nonthermal RFI often has other values of kurtosis. This paper...
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