Improvement to the coverage radius and forward-link capacity of the conventional cell system;

In terms of the present situation of Chinese railways in combination with the technology of the GSM-R network,we study forward the algorithm of the calculated cell coverage radius in GSM-R.

And compared with traditional honeycomb systems,it will cause more lower interruption rates and increases the coverage radius of the system.

The covering radius of codes over ring F_2+uF_2 for the Lee distance was studied.

The multicovering radii of a code are recent generalizations of the covering radius of a code .

This algorithm transports the pending issue into the study on the force laws to govern the interaction between centroid-centroid and centroid-trackpoint,in order to maximize path coverage while minimizing the overlapping sensing area among multiple neighboring video nodes,thus achieve better path coverage rate.

Path coverage is a kind of important standard that investigates the sufficiency of software testing,it requires that every branch in a program should be performed at least once.

A novel method for automatic generating simulation vectors from HDL descriptions based on path coverage and constraint solving is presented.