Performance of dynamic capacity allocation in future wireless communication systems

Abstract

Future wireless systems are expected to serve application areas ranging from offices to sparsely populated areas. A teletraffic model for calculating some performance variables should have a corresponding flexibility. We describe a performance model allowing the analyst to choose the level of detail when examining a system design. A simulation program has been developed in order to study the performance of such systems. One of our intentions with this simulation program is to gain some insight into the impact dynamic capacity allocation may have on the performance. An example is given and some observations are discussed.

Density Functional Theory Investigation of Cobalt Siting in Ferrierite

“…The fixed atoms also contribute additional real frequencies and couple with the vibrations of other atoms. The vibrations associated with the fixed atoms were eliminated by level-shifting the force constants associated with those atoms before determining the eigenvalues of the Hessian matrix . The Hessian matrix elements corresponding to the fixed atoms are negative; the level-shift procedure shifts all of these force constants to very large positive values.…”

“…The vibrations associated with the fixed atoms were eliminated by level-shifting the force constants associated with those atoms before determining the eigenvalues of the Hessian matrix. 38 The Hessian matrix elements corre- sponding to the fixed atoms are negative; the level-shift procedure shifts all of these force constants to very large positive values. As a result, the vibrational modes corresponding to vibrations of the fixed atoms are shifted to very large wavenumbers, greater than 10 000 cm -1 , which are then discarded.…”