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In the context of Cognitive Radio, spectrum occupancy estimate of a geographical region is very important to develop strategies to utilize the unoccupied spectrum. Most of the spectrum occupancy measurements carried out till date are based on measurements at outdoor high points. In this work, spectrum occupancy is measured in an indoor setup. An attempt is made to find the utility of the licensed...
Spectrum sensing is an important activity in the Cognitive Radio (CR) scenario. Presence of primary users (PU) over a specific band has to be monitored periodically in each time slots. Spectrum sensing and data communication have to be completed in each time slot. If we can reduce the time required for spectrum sensing, more data can be transmitted in the specified time slot. If the presence of a...
Memory controllers are designed in order to reduce the memory access time which has remained as a memory bottleneck which limits the system performance. This paper shows how to design and implement an Enhanced Memory Controller with high performance AMBA AHB-Lite interface native DDR SDRAM controller. The memory controller features a modular design, fully optimized in terms of resources with pipelined...
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