Christofer Larsson, an Engineering Physics graduate of the Royal Institute of Technology in Stockholm, Sweden, is a consultant in network design and optimization, and a textbook author. Taking a strong interest in engineering mathematics, Christofer has during three decades in IT and telecommunications participated in the design and implementation of several successful innovative network solutions. Christofer has held positions as system designer, software architect, tester, trainer, technical writer, and manager. After a decade with Ericsson, he has been a consulting partner with system vendors, network operators and software providers, including Ericsson, NSN, Siemens, Deutsche Telekom, Vodafone-Hutchinson, and Orange