An Efficient Beam Steerable Antenna Array Concept for Airborne Applications

Deployment of a satellite borne, steerable antenna array with higher directivity and gain in Low Earth Orbit makes sense to reduce ground station complexity and cost, while still maintaining a reasonable link budget. The implementation comprises a digitally beam steerable phased array antenna integrated with a complete system, comprising the antenna, hosting platform, ground station, and aircraft based satellite emulator to facilitate convenient aircraft based testing of the antenna array and ground-space communication link. This paper describes the design, development and initial successful interim testing of the various subsystems. A two element prototype used in this increases the signal-to-noise ratio (SNR) by 3 dB which is corresponding to more than 10 times better bit error rate (BER)

Victim awareness : re-examining a probation fundamental

‘Ensuring offenders' awareness of the effects of crime on the victims of crime and the public’ is one of five stated aims of the National Probation Service of England and Wales and specifically undertaking victim awareness work is an expectation of the service’s work. The nature and putative value of such work appears to be rarely questioned however. It is argued that ‘victim awareness’ is a confused concept in terms of its rationale, definition, and empirical basis as a criminogenic need. These issues are evaluated and the practice implications discussed. A possible model of victim awareness work is described

A Modem Link Strategy for Optimization of LEO Satellite Throughput

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Automated traffic class prediction and prioritization on 802.11 using machine learning

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Design and Optimizations of a Cluster Based Adhoc Wireless Network Routing Protocol

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Optimal segment length for telecommand data link layer protocol

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Value chain scenarios for M2M ecosystem

Recently attention has been directed to Machine to Machine (M2M) wireless communications by a number of stakeholders which include device manufacturers, applications developers and mobile network operators across the globe. As voice revenues for most mobile operators enter a decline due to the new data oriented networks and services being availed into the market, there is growing need to adopt new revenue models through adoption of wireless connectivity in a wide range of devices. With the introduction of these new applications and services, new stakeholders come into play in the M2M communications value chain. A way to market these M2M devices can thus involve creating a platform of services that adds value and functionality to the devices and is a result of a combination of synergies between device manufacturers, application developers and mobile operators. This paper discusses several value chain scenarios which form the M2M ecosystem wherein all stakeholders assume different levels of control over the customer relationship and the assets that make up the value proposition. © 2011 IEEE

Traffic Class Prediction and Prioritization on a Diversified IP Network using Machine Learning

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Traffic Class Prediction and Prioritization on a Diversified IP Network using Machine Learning

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An Aircraft Based Emulation Platform for LEO Satellite Antenna Beam Steering

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