Professor Björnson's book comes at an auspicious moment. British Telecom, Deutsche Telekom, & France Telecom/Orange recently committed to large deployments of Massive MIMO.at the recent Huawei Mobile Broadband Forum. Like most of the work on Massive MIMO, the book is a collaboration across countries. Björnson, one of the first researchers in Massive MIMO, is in Sweden. Co-author Luca Sanguinetti is in Italy. The third author, Jakob Hoydis is at Nokia in France. ;
They contend, "A lot of classic 'wisdom' about Massive MIMO is questionable because it is based on too simplistic system models."