The Combination Algorithm for Total

Optimisation (CAT) is proposed to support smooth

upgrading of third generation systems and to fulfil the

requirements of current cellular networks. The CAT

algorithm solves the problem of base-station location in

different environments. Until now experiments were

based on simple statistical propagation models such as

Okumura-Hata. In this paper new results based on the

use of a more complex ray-tracing approach combined

with inhomogeneous capacity requirements are

presented and discussed. Example results are given for

various capacity and coverage targets.