Long-time guest-researcher, co-author of texbooks, a dear friend – Magnus Almgren – passed away at the age of 62 a few weeks ago. Magnus Almgren spent most of his career at Ericsson Research. He was guest researcher, participant in many Wireless@KTH projects and guest lecturer at KTH in our courses in Wireless Networks. To KTH students, Magnus was most well known as the co-inventor of RUNE – one of the earliest and most spread simulation tools for cellular systems performance evaluation. He was also one of the co-authors of the book “Radio Resource Management in Wireless Networks” published in 2001. Magnus was always a welcome guest at KTH and with his out-of-the-box thinking a true and constant source of inspiration to our students. We miss you, Magnus!