Indoor Radio Planning: A Practical Guide for 2G, 3G and 4G (3rd Edition, 2015) by Morten Tolstrup is a comprehensive handbook for RF engineers focusing on in-building wireless coverage, distributed antenna systems (DAS), and 4G/LTE implementation . Published by
No indoor plan should be deployed without 3D ray-tracing prediction. Indoor Radio Planning: A Practical Guide for 2G,