Current Issue : April-June Volume : 2011 Issue Number : 2 Articles : 2 Articles
DDS Technology is used to generate signal at precise frequencies and is based on phase control. The DDS system design is realized utilizing VHDL language, and receives functional simulation in the development environment of Qurtus-II and MATLAB. Finally, using the device of Cyclone-II of ALTERA Company as a hardware design platform, the DDS system receives correlative experimental tests. The experiment result shows that the simulation and experiment are of great consistency, which proves the validity of the method....
VLSI cell placement problem is known to be NP complete. A wide repertoire of heuristic algorithms exists in the literature for efficiently arranging the logic cells on a VLSI chip. The objective of this paper is to present a comprehensive solution of the cell placement technique, with emphasis on standard cell and macro cell placement using simulated annealing using multi objective GA . The metropolis algorithm is applied to generate generations by decreasing the temperature (cooling coefficient). The state will be accepted or rejected based on energy level (cost) and finally optimum solution will be selected...
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