This book originates from the desire to perpetuate expertise in the field of
performance evaluation, particularly for telecommunication systems and
networks. It is obviously impossible to translate into a single work all the
facets of an activity which encompasses many systems and a great variety of
domains such as standardization, modelling, measurement, fields trials,
observations etc. However, it rapidly becomes evident that performance study
through its different aspects is the expression of a real and unique discipline:
performance engineering. So it is worth writing a book whose contents is, as
much as possible, the synthesis of both the theoretical and the technical
knowledge which are the basis for good practice in this field.
In this respect this work aims to be both a tool for education in performance
engineering, and a guide to implementing performance activity, both in the
research laboratory and in industrial environment.
Research and industrial work are both demanding. The performance engineer
will have to juggle with equations, as well as with equipment in the lab or in
the field. His/her permanent search for efficiency, the necessity to use
tractable approximations, and his/her natural trend to perform experimental
measurements will not prevent him/her from mastering complex mathematical
models. As a matter of fact, it is the complete mastering of the analytical tools
together with their application to the whole set of system development phases
(from design to operation), which will lead to maximum efficiency, by making
possible the synthesis between theory and practice as required by market and
industrial constraints.