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Performance of Cognitive Radio (CR) is affected by the estimation of availability of vacant channels based on traffic distribution observation of licensed users. Telecom traffic prediction at a particular instant depends on thorough knowledge of day of the week, hour of the day and instant of the hour. Distributed cooperative spectrum sensing is infrastructure based in which the sensor nodes themselves...
For secure data transmission cryptographic algorithms are used for many applications. This paper introduces optimized hardware implementation of area and speed improvement for the block cipher Advanced Encryption Standard (AES-128) using Field Programmable Graphic Array (FPGA). As AES has four transformations among them sub-byte and mix-column transformation are key challenges to implement in terms...
Measurement of propagation parameters are essential for coverage and quality prediction. Commercially available planning tools are not customised for local geographical conditions, thus leading to inadequate service and unnecessary expenditure. Mobile WiMAX is under rapid installation throughout the globe. Present study made at rural areas of Rajasthan establishes lower path loss than the coverage...
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