IJSRD | Online e-journal

Call For Paper | IJSRD Journal

ISSN (Online)  : 2321-0613

Subject Category    : Engineering Science and Technology

Frequency               : Monthly, 12 issues per year

Last Date                 : 25th of Current Month

Impact Factor          : 4.396 (2016)

IC Value                  : 64.81 (2016)

Publication Charge : 750/- INR (Indian Author) | 50 USD (Foreign Author)

Submit Your Article : Click Here  |  Thousand of published article 

#IJSRD When Big Data Is Watching You

When Big Data Is Watching You

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Originally posted on TechCrunch:

Is the answer to our feeble human minds needing to grapple with increasing quantities of big data to stand in a purpose built room immersed in complex data visualisations while wearing an array of sensors that track our physiological reactions? A group of European Commission-backed scientists believe so.
They’re attempting to quantify — and, they claim, enhance — cognition by building a sensor-based data visualisation system that dynamically changes the complexity level of the data on display in response to human triggers, such as gestures, eye movements and heart rate.
The basic concept underpinning this research, which has attracted €6.5 million in European Union funding under the Future and Emerging Technologies Scheme, is that a data display system can be more effective if it is sensitive to the human interacting with it, enabling it to modify what’s on display based on tracking and reacting to human stress signifiers.
The project is called CEEDS — aka Collective Experience of Empathetic Data Systems — and involves a...

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#Ijsrd Performance of Multiple symbol representation with clipping scheme for PAPR reduction in OFDM systems

#IJSRD 

Performance of Multiple symbol representation with clipping scheme for PAPR reduction in OFDM systems

Abstract :

OFDM is one of the multicarrier modulation technique used in various communication systems. The major problem one faces while implementing this system is the high peak to average power .For an efficient OFDM system this PAPR should be low. In this paper a hybrid PAPR (peak to average power ratio) reduction technique for the OFDM (orthogonal frequency division multiplexing) signal which combines a multiple symbol representations method with a signal clipping method is proposed. In multiple symbol representations alternative signaling points are used to represent one symbol and PAPR is further reduced with the clipping scheme. The performance of the hybrid scheme is compared with the partial transmit sequence which is one of the other PAPR reduction scheme. In partial transmit sequence the input data is divided in to disjoint blocks transformed in to time domain sequence and rotated by phase factors. Theoretical analysis and simulation results validate that the proposed scheme has the ability to provide large PAPR reduction, low bit error rate. Performance analysis is also done with the partial transmit sequence scheme.

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