Category Archive: 'Opnet MS Projects'

Opportunistic Beamforming with Wireless Powered 1-bit Feedback Through Rectenna Array

This letter deals with the opportunistic beamforming (OBF) scheme for multi-antenna downlink with spatial randomness. In contrast to conventional OBF, the terminals return only 1-bit feedback, which is powered by wireless power transfer through a rectenna array. We study two fundamental topologies for the combination of the rectenna elements; the direct-current combiner and the radio-frequency […]

130-320-GHz CMOS Harmonic Down-Converters Around and Above the Cutoff Frequency

We present an analytical model, design, and measurement results on fundamental, harmonic, and subharmonic down conversion mixing approaches in 65-nm CMOS around and above the transistor cutoff frequency fmax, targeting submillimeter-wave operation. Analytical expressions for the mixing approaches are derived and compared with the simulation and measurement results. To investigate how to improve the performance […]

Reconfigurable body worn antenna for Bluetooth and WiMAX

The paper presents a frequency reconfigurable microstrip patch antenna printed on a textile substrate. It can be tuned by using active circuitry between Bluetooth and WiMAX operating at 2.4 GHz and 2.5 GHz frequency bands respectively. Indigo blue jeans having relative permittivity 1.68 with thickness 1 mm is used as a textile substrate. The frequency […]

Agent based State Estimation in Smart Distribution Grid

A novel agent based static state estimation strategy for a specific class of physical systems is proposed. Physical systems, (e.g. smart distribution grid) which are well modeled using decentralized measurements and distributed state-space formulations are considered. In such systems, sensor nodes acting as agents estimate only a subset of states, instead of evaluating local estimates […]

Reach enhancement of 100% for a DP-64QAM super-channel using MC-DBP

A digital coherent super-receiver enables the reception and demodulation of a 7×10GBd DP-64QAM Nyquist spaced super-channel.Multi-channel DBP provides a 100% improvement in reach from 640km to 1280km of SSMF, with an ISD of 9.15b/s/Hz.

Circuit design perspectives for Ge FinFET at 10nm and beyond

In this paper we study the circuit design implications of Ge vs. Si PMOS FinFETs at the 10 and 7nm nodes, using TCAD calibrated statistical compact models and the ARM predictive benchmarking flow. The ARM predictive flow incorporates advanced-node-relevant layouts, design rules, parasitic RC extraction and wire-loading. We present the first comprehensive simulation study evaluating […]

Downlink interference penalty algorithm for power control, scheduling, and user association

Managing inter-cell interference is one of the main challenges in current and next generation wireless systems that aggressively reuse the frequency. Cooperation between interfering cells has been sought to mitigate interference. In this paper, we address the problem of jointly optimizing the transmit powers, user scheduling, and user association in a cellular network to maximize the weighted […]

Security–A Perpetual War: Lessons from Nature

For ages, people have sought inspiration in nature. Biomimicry has propelled inventions from Velcro tape to “cat’s eyes” retroreflective road markers. At the same time, scientists have been developing biologically inspired techniques, including genetic algorithms and neural and sensor networks. Although a first glance shows no direct connection between the Internet’s offensive and defensive techniques and […]

A Socio-Physical Approach to Systemic Risk Reduction in Emergency Response and Preparedness

This paper proposes a socio-physical approach that considers jointly the interaction and integration of the social and physical views of a system to improve emergency response and preparedness. This is accomplished through a reduction of systemic risk, which refers to a risk that could be greater than the sum of the risks of the individual […]

An enhanced router based queuing policy providing better fairness to real-time data transfers in Internet

Forwarding and delivery in IP based internet is a best effort service. IP being a connectionless forwarding mechanism, it may drop the packets at the time of congestion. This may affect the services in internet as it is not able to deliver the packet with sufficient Quality of service (QOS). The reliability mechanism adopted by […]